CN107349909A - A kind of preparation method of magnetic stalk cellulose dye sorbent - Google Patents
A kind of preparation method of magnetic stalk cellulose dye sorbent Download PDFInfo
- Publication number
- CN107349909A CN107349909A CN201710598515.XA CN201710598515A CN107349909A CN 107349909 A CN107349909 A CN 107349909A CN 201710598515 A CN201710598515 A CN 201710598515A CN 107349909 A CN107349909 A CN 107349909A
- Authority
- CN
- China
- Prior art keywords
- magnetic
- stalk
- dye
- deionized water
- added
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28002—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
- B01J20/28009—Magnetic properties
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
- B01J2220/4825—Polysaccharides or cellulose materials, e.g. starch, chitin, sawdust, wood, straw, cotton
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The present invention relates to a kind of preparation method of magnetic stalk cellulose dye sorbent, and stalk is used into sodium chlorite and NaOH pretreatment and sodium periodate oxidation respectively, obtains aldehyde radical stalk cellulose.Magnetic nano-particle is prepared using improvement chemical coprecipitation,Then surface modification is carried out to it with Silane coupling agent KH550,Obtain KH550 modified magnetic nano-particles,Finally by KH550 modified magnetic nano-particles,Polyethyleneimine and glutaraldehyde carry out cross-linking reaction,Prepare the magnetic stalk cellulose dye sorbent with schiff bases cross-linked structure and a variety of adsorption groups,Saturation magnetization is 10~30 emu/g,Remanent magnetism and coercivity go to zero,With paramagnetism and magnetic responsiveness,It is 100~1000mg/L aqueous dye solutions for initial concentration,Dye Adsorption capacity reaches 50~300mg/g,60~150min reaches adsorption equilibrium,Dye Adsorption capacity after recycling utilization 5 times exceedes the 75% of first time adsorption capacity,It can be widely applied to Dye Adsorption separation and waste water from dyestuff pollution control etc..
Description
First, technical field
The present invention relates to magnetic stalk prepared by a kind of preparation method of magnetic stalk cellulose dye sorbent, the present invention
Cellulose dye adsorbent is applied to the adsorbing separation of dyestuff, can be widely applied to Dye Adsorption, dye separation purification and dye
Expect environmental pollution improvement etc..
2nd, background technology
Waste water from dyestuff is mainly derived from dye and dye intermediate production industry and weaving, leather, papermaking, rubber, plastics,
The different industries such as cosmetics, pharmacy and food, there is composition complexity, water and change of water quality are big, colourity is high, COD and BOD concentration
High, the features such as suspension is more, recalcitrant substance is more, be one of industrial wastewater difficult to deal with.In addition, waste water from dyestuff is not only
Have obvious colourity, influence sense organ, and contain in waste water to water body or the poisonous and hazardous pollutant of human body, if waste water from dyestuff without
Processing directly discharge is crossed, the destruction of water ecological setting can be caused, venomous injurant enters food chain, can influence the strong of human body
Health, therefore environment-friendly high-efficiency handles the problem of waste water from dyestuff has turned into today's society urgent need to resolve.
The method of processing waste water from dyestuff mainly has chemistry, biology, Physical etc. at present.It is simple to operate to precipitate flocculence, into
This is low, but caused a large amount of sludge increase operation costs.Electricity is consumed during Treatment of Wastewater by Electrolysis and metal electrode amount is big.Photocatalysis
Oxidation is only good to low concentration waste water from dyestuff effect.The more single and microorganism of bioanalysis selectivity is environmentally sensitive.Absorption method operates
Simply, cost is low, effect is good, and adsorbent is easily recycled.The active charcoal of conventional adsorbent, mineral, resinae adsorbent
Deng.Charcoal absorption power is strong, and clearance is high, but cost is high, is normally only used for the relatively low treatment of dyeing wastewater of concentration or depth
Reason.Mineral include natural zeolite, bentonite etc., and its ion-exchange capacity and absorption property are preferable, but activity is low, and regeneration is difficult.
And resinae sorbent treatment efficiency high, it can under certain condition regenerate, can still keep efficient after regeneration, suitable for waste water from dyestuff
Processing.
Traditional adsorbent such as ion exchange resin, polymeric adsorbent, carbonaceous class adsorbent and natural mesoporous mineral material
Deng after, these sorbing materials absorption dyestuff can only by centrifuging, filter, the conventional method separation such as precipitate, not only waste time and energy and
And not energy-conserving and environment-protective, the structure of destructible sorbing material, the regeneration for sorbing material bring influence.In recent years, nanometer
The appearance of material and nanometer technology has been greatly facilitated the progress and development of dyestuff treatment technology, and magnetic Nano material is special because of its own
The advantages that some bigger serfaces, abundant active site and high magnetic, shows huge application in Dye Adsorption and removal field
Potentiality.Magnetic nanometer adsorbent after the completion of absorption, can be led to the dyestuff contaminant in adsorbed water body in the presence of external magnetic field
Magnetic Isolation is crossed, realizes the fast and effective separation of adsorbent and mother liquor, and cost is low, it is simple to operate, preferably solve often
Advise the problem of adsorbent separation of solid and liquid is difficult and recovery separation is difficult.
Li etc. utilizes poly- (acrylic acid-acrylamide-butyl methacrylate) hydrogel of Co deposited synthesis magnetic in situ,
There is preferable Adsorption performance to Degradation of Cationic Dye Crystal Violet and basic fuchsin.Xu etc. is changed using solvent structure amino
Property magnetic nano-particle, then add polyacrylic acid and amino modified magnetic nano-particle and carry out chemical graft and prepare magnetic polymeric
Thing adsorbent, adsorption capacity 55.8mg/g fast to the rhodamine R6G rate of adsorption.The synthesis of super branched polyglycereol bag first such as He
Magnetic Fe_3O_4 nano-particle is covered, butanedioic anhydride is then added and obtains carboxylated modified ultra-branching coated magnetic Fe3O4 nanoparticles
Son is high to dye of positive ion adsorption efficiency, the rate of adsorption is fast, favorable repeatability.Zhou etc. is prepared with core shell structure first
Fe3O4/SiO2 nano-particles, then add dissaving polymer and carry out surface modification, be eventually adding butanedioic anhydride and obtain carboxyl
Change modified ultra-branching coated magnetic Fe3O4/SiO2 nano-particles, rhodamine R6G and crystal violet adsorption capacity respectively reach
0.37mmol/g and 0.60mmol/g.Chen etc. uses the amino modified Fe3O4 nano-particles of solvent structure, then adds and hands over
Join agent glutaraldehyde and polyethyleneimine, magnetic polyethylene imines adsorbent of the generation with three-dimensional net structure, acid matchmaker's alizarin
Red, methyl orange, methylene blue, sunset yellow, the adsorption capacity of core fast red and Alizarin Green be respectively 145.7mg/g, 127.5mg/g,
137.0mg/g, 118.3mg/g and 126.8mg/g.
Wen etc. uses 1,2- Bromofume crosslinked polyethylenimine synthesizing polyethylene imine nanometer gels, then using original
The position precipitation method prepare magnetic polyethylene imine nanometer composite aquogel, and anionic dye CR clearance is more than 99%.Cheng etc.
Using one-step synthesis synthesizing magnetic polyvinyl alcohol/graphene oxide hydrogel, methylene blue and crystal violet adsorption capacity difference
For 231.12mg/g and 204.74mg/g.Shanehsaz etc. prepares magnetic polypyrrole adsorbent, reactive blue using oxidative polymerization method
RB19 adsorption capacities reach 112.36mg/g.
Hosseinadeh etc. uses one-pot synthesis to prepare the magnetic fibre of carboxymethyl cellulose and polyacrylic acid for matrix
Element/polyacrylic acid hydrogel, Crystal Violet adsorption capacity reach 189mg/g.Beyki etc. is with the magnetic with core shell structure
Fe3O4- celluloses prepare magnetic cellulose ionic liquid adsorbent as matrix, addition epoxychloropropane and 1- methylimidazoles,
Congo red adsorption capacity reaches 131mg/g.γ-Fe2O3, cellulose and activated carbon are crosslinked by Luo etc. with epoxychloropropane
To magnetic cellulose/acticarbon, to the clearance of methyl orange and methylene blue more than 99%.Chang etc. is by starch
Covalence graft multilayer carbon nanotube, then magnetic nanoparticle is set to be given birth in starch-grafted carbon nano tube surface by template of starch
It is long, obtain magnetic starch/carbon nanotube adsorption material, methyl orange and methylene blue adsorption number capacity respectively up to 135.8mg/g and
94.1mg/g.The synthesizing magnetic Fe3O4@SiO2 nano-particles first such as Pourjavadi, then add starch and acrylic monomers
Carry out graft copolymerization and prepare magnetic starch graft polyacrylate hydrogel, Crystal Violet Dye clearance is close to 90%.Baldikova
Deng using sodium citrate-sodium hydroxide modified wheat stalk, magnetic wheat stalk adsorbent is then prepared using microwave process for synthesizing,
Acridine orange and methyl green adsorption capacity are respectively 208.3mg/g and 384.6mg/g.
Although magnetic polymer dye sorbent increasingly gets more and more people's extensive concerning and is increasingly becoming both domestic and external grind
Study carefully focus, but have not been reported both at home and abroad at present preparation about magnetic stalk cellulose/polyethyleneimine dye sorbent and
Its Dye Adsorption performance study.
3rd, the content of the invention
In view of this, the purpose of the present invention is exactly to provide a kind of preparation side of magnetic stalk cellulose dye sorbent
Method.Magnetic nano-particle is prepared using improvement chemical coprecipitation first, table is then carried out to it using Silane coupling agent KH550
Face is modified, and obtains KH550 modified magnetic nano-particles.Stalk is subjected to pretreatment and chemical oxidation prepares aldehyde radical stalk fibre
Element, then KH550 modified magnetics nano-particle, aldehyde radical stalk cellulose, polyethyleneimine and glutaraldehyde are chemically crosslinked,
Prepare magnetic stalk cellulose/polyethyleneimine Dye Adsorption with schiff bases cross-linked structure and a variety of Dye Adsorption groups
Agent, by silane coupler modified magnetic nano-particle, improve the compatibility of magnetic nano-particle and polymeric matrix, suppress magnetic
Property nano-particle and polymeric matrix macroscopic view phase separation, realize the high magnetic of magnetic stalk cellulose adsorbent Dye Adsorption
Intelligence separation, preferably solve common dye adsorbent separation of solid and liquid hardly possible, be also easy to produce the shortcomings that secondary pollution.
According to object of the invention it is proposed that a kind of preparation method of magnetic stalk cellulose dye sorbent, its feature
There is following processing step：
A) stalk is cut into fragment, be washed with deionized 3~5 times, be put into 60~80 DEG C of drying of baking oven, crush, sieve takes
The stalk powder of 100~200 mesh, the Acetic acid-sodium acetate that stalk powder and sodium chlorite are added to pH=3.5~5.5 buffer
Solution, 50~90 DEG C are warming up to, room temperature is cooled to after reacting 2~6h, filtered, deionized water is washed 3~5 times, is centrifuged, 60
~80 DEG C of oven dryings, crush, obtain pretreated straw；Stalk powder, sodium chlorite and acetic acid-acetic acid of pH=3.5~5.5
The mass ratio of sodium cushioning liquid is 10~30：3~10：100~200；
B) pretreated straw is added to the NaOH solution that mass concentration is 5~10%, is warming up to 60~90 DEG C, reaction 2
~6h, filtering, deionized water are washed 3~5 times, are centrifuged, are obtained pretreated straw cellulose；Pretreated straw and quality are dense
The mass ratio for spending the NaOH solution for 5~10% is 10~30：100~200；
C) pretreated straw cellulose, sodium metaperiodate and deionized water are added in three-necked flask, are warming up to 40~60
DEG C, 1.5~3h is reacted, product is washed with deionized 3~5 times, centrifuges, obtains aldehyde radical stalk cellulose；Pretreatment
The mass ratio of stalk cellulose, sodium metaperiodate and deionized water is 10~30：5~10：100~200；
D) FeCl36H2O, FeCl24H2O and deionized water are added in three-necked flask, stirred, nitrogen is protected
50~80 DEG C are warming up to after shield 30min, the ammonia spirit that mass concentration is 25~30% is then added dropwise, ammonia spirit is added dropwise
Nitrogen protection 3~6h of isothermal reaction afterwards, room temperature is cooled to, deionized water is washed 3~5 times, magnet separation, obtains magnetic nano particle
Son；The ammonia spirit and the mass ratio of deionized water that FeCl36H2O, FeCl24H2O, mass concentration are 25~30% are 10
~30:5~10：25~60:100~200；
E) magnetic nano-particle, Silane coupling agent KH550 and deionized water are added in three-necked flask and stirred, nitrogen
50~80 DEG C are warming up to after gas shielded 30min, the ammonia spirit that mass concentration is 25~30%, nitrogen protection constant temperature is then added dropwise
Room temperature is cooled to after 3~6h of reaction, deionized water is washed 3~5 times, magnet separation, obtains KH550 modified Nano magnetic particles；
The ammonia spirit and the mass ratio of deionized water that magnetic nano-particle, Silane coupling agent KH550, mass concentration are 25~30% be
1~5:2~15：2~15:100~200；
F) deionized water, KH550 modified magnetics nano-particle and polyethyleneimine are added in three-necked flask, are passed through nitrogen
Gas agitating is uniform, is warming up to 40~70 DEG C, then addition aldehyde radical stalk cellulose and glutaraldehyde, and nitrogen protection isothermal reaction 1~
3h, product is washed with deionized 3~5 times, Magnetic Isolation, 60~80 DEG C of oven dryings, crushes, obtain magnetic stalk fibre
Plain dye sorbent；Aldehyde radical stalk cellulose, KH550 modified magnetics nano-particle, polyethyleneimine, glutaraldehyde and deionized water
Mass ratio be 1~6:0.5~5:0.5~5：0.2~2：100~200；
G) magnetic stalk cellulose dye sorbent saturation magnetization is 10~30emu/g, and remanent magnetism and coercivity become
In zero, there is paramagnetism and magnetic responsiveness, be 100~1000mg/L aqueous dye solutions for initial concentration, Dye Adsorption capacity
Reach 50~300mg/g, 60~150min reaches adsorption equilibrium, and the Dye Adsorption capacity after recycling utilization 5 times is more than
The 75% of adsorption capacity.
Stalk used in the present invention be selected from maize straw, wheat stalk, soybean stalk, rice straw, broomcorn straw and
Cotton stalk.
Dyestuff used in the present invention is selected from methylene blue, cationic blue FGL, cation orange R, Cationic Bright Yellow 7GL, sun
The pink FG of ion, methyl green, crystal violet, methyl orange, active black RB5, Congo red, alizarin red, sunset yellow, Alizarin Green, acidic chromium
Blue K and eosin W or W S.
Advantages of the present invention and effect are：
1) by silane coupler modified magnetic nano-particle, the compatible of magnetic nano-particle and polymeric matrix is improved
Property, suppress the macroscopic view phase separation of magnetic nano-particle and polymeric matrix, realize magnetic stalk cellulose/polyethyleneimine dyestuff
The high magnetic of absorption intelligently separates, and preferably solves common adsorbents separation of solid and liquid hardly possible, is also easy to produce the shortcomings that secondary pollution.
2) KH550 modified magnetics nano-particle, aldehyde radical stalk cellulose, polyethyleneimine and glutaraldehyde are subjected to chemical friendship
Connection, the magnetic stalk cellulose dye sorbent with schiff bases cross-linked structure and a variety of Dye Adsorption groups is prepared, by more
The cooperative effect of kind adsorption group, further improve the absorption property of magnetic stalk cellulose adsorbent dyestuff；
3) with agricultural crop straw, this natural macromolecular material prepares magnetic stalk cellulose dye sorbent, has life
Periodic chain is short, it is discarded after can the green advantage such as natural degradation, that is, take full advantage of inexhaustible regenerated resources, solve again
The environomental pollution source of crop straw burning, the environmental pollution brought to administering current China crop straw burning and dyestuff, realizes farming
The comprehensive utilization of thing stalk and agricultural sustainable development have important, have huge social benefit, environmental benefit and economic effect
Benefit.
The hysteresis property of magnetic stalk cellulose dye sorbent of the present invention, Dye Adsorption speed, adsorption capacity,
Recycling utilization performance measurement method is as follows.
Using the hysteresis property of LDJ-9600 types vibration magnetometer (VSM) measure magnetic stalk cellulose dye sorbent.
Dry, the finely ground magnetic stalk cellulose dyestuff of dye solution and 0.2g that concentration is 100~1000mg/L is inhaled
Attached dose is put into 250mL conical flasks, be subsequently placed in oscillator vibrate absorption, vibrate certain time after sample, using it is ultraviolet/can
See absorbance of the spectrophotometer in dyestuff maximum absorption wave strong point determination sample, each sample is measured 3 times and averaged, dyestuff
Adsorbance qt, adsorption capacity qeIt is calculated as follows respectively：
qt(mg/g)={ (C0-Ct)V}/m (1)
qe(mg/g)={ (C0-Ce)V}/m (2)
Wherein C0、CtAnd CeRespectively dyestuff initial concentration, vibration absorption certain time dye strength, Dye Adsorption balance
Concentration (mg.L-1), V are liquor capacity (L), and m is the quality (g) of magnetic stalk cellulose dye sorbent.
The magnetic stalk cellulose adsorbent of saturation absorption dyestuff is shaken into solution with 50mL 0.5mol/L hydrochloric acid solution
Inhale, use dye strength in ultraviolet/visible spectrophotometer measure solution after desorbing certain time, put down until reaching desorption
Weighing apparatus.Magnetic stalk cellulose adsorbent after desorption is dried and crushed, then dyestuff is adsorbed again under the same conditions,
Using it is ultraviolet/visible spectrophotometer measure magnetic stalk cellulose adsorbent Dye Adsorption capacity, and with first time dyestuff
Adsorption capacity compare, characterize magnetic stalk cellulose dye sorbent recycling utilization performance, repeated regeneration circulation
5 times are adsorbed to assess the recycling utilization performance of magnetic stalk cellulose dye sorbent.
4th, embodiment
For a better understanding of the present invention, present disclosure is expanded on further with reference to embodiment, but it is of the invention
Content be not limited solely to the following examples.
Embodiment 1：
Maize straw is cut into fragment, is washed with deionized 5 times, 60 DEG C of drying of baking oven is put into, crushes, sieve takes 200 mesh
Maize straw powder, the Acetic acid-sodium acetate that 16g maize straw powders and 6g sodium chlorites are added to 150mL pH=4 delays
Solution is rushed, is warming up to 70 DEG C, room temperature is cooled to after reacting 4h, is filtered, deionized water is washed 5 times, is centrifuged, and 80 DEG C of baking ovens are done
It is dry, crush, obtain pre-processing maize straw；15g pretreatment maize straws are added to the NaOH that 150mL mass concentrations are 5%
Solution, 70 DEG C are warming up to, react 4.5h, filtering, deionized water is washed 5 times, is centrifuged, and obtains pre-processing corn stalk fiber
Element；25g pretreatment corn stalk fibers element, 10g sodium metaperiodates and 200mL deionized waters are added in three-necked flask, heated up
To 50 DEG C, 2.5h is reacted, product is washed with deionized 5 times, centrifuged, obtain aldehyde radical corn stalk fiber element.
20gFeCl36H2O and 8gFeCl24H2O and 200mL deionized waters are added in three-necked flask, stirring is equal
It is even, 70 DEG C are warming up to after nitrogen protection 30min, the ammonia spirit that 50g mass concentrations are 25~30%, ammonia spirit is then added dropwise
Rear nitrogen protection isothermal reaction 4h is added dropwise, is cooled to room temperature, deionized water is washed 4 times, magnet separation, obtains magnetic Nano
Particle；4g magnetic nano-particles, 12g Silane coupling agent KH550s and 200mL deionized waters are added in three-necked flask and stirred
It is even, 80 DEG C are warming up to after nitrogen protection 30min, the ammonia spirit that 12g mass concentrations are 25~30%, nitrogen protection is then added dropwise
Room temperature is cooled to after isothermal reaction 3h, deionized water is washed 3 times, magnet separation, obtains KH550 modified Nano magnetic particles.
200mL deionized waters, 4g KH550 modified magnetics nano-particles and 4g polyethyleneimines are added to three-necked flask
In, it is uniform to be passed through nitrogen gas stirring, is warming up to 60 DEG C, then adds 4g aldehyde radicals corn stalk fiber element and 1.8g glutaraldehydes, nitrogen
Isothermal reaction 1.5h is protected, product is washed with deionized 5 times, Magnetic Isolation, 80 DEG C of oven dryings, crushes, obtains magnetic
Corn stalk fiber element dye sorbent, saturation magnetization are 10~30emu/g, and remanent magnetism and coercivity go to zero, had
Paramagnetism and magnetic responsiveness；For crystal violet, Cationic Bright Yellow 7GL, active black RB5 and the methyl that initial concentration is 1000mg/L
The orange aqueous solution, magnetic corn stalk fiber element dye sorbent crystal violet, Cationic Bright Yellow 7GL, active black RB5 and methyl orange are inhaled
Attached capacity respectively reaches 300mg/g, 228mg/g, 150mg/g and 125mg/g, and 60min reaches adsorption equilibrium, recycling utilization
Crystal violet, Cationic Bright Yellow 7GL, active black RB5 and Adsorption of Methyl Orange capacity after 5 times are more than first time adsorption capacity
75%.
Embodiment 2：
Wheat stalk is cut into fragment, is washed with deionized 3 times, 80 DEG C of drying of baking oven is put into, crushes, sieve takes 150 mesh
Wheat stalk powder, 12g wheat stalks powder and 3.5g sodium chlorites are added to 100mL pH=5.5 acetic acid-acetic acid
Sodium cushioning liquid, 70 DEG C are warming up to, room temperature is cooled to after reacting 4h, filtered, deionized water is washed 5 times, is centrifuged, 80 DEG C of bakings
Case dry, pulverize, and obtain pre-processing wheat stalk；It is 10% that 12g pretreatment wheat stalks are added into 100mL mass concentrations
NaOH solution, 80 DEG C are warming up to, react 3h, filtering, deionized water is washed 5 times, is centrifuged, and it is fine to obtain pretreatment wheat stalk
Dimension element；12g pretreatment wheat straw fibers element, 6g sodium metaperiodates and 100mL deionized waters are added in three-necked flask, heated up
To 50 DEG C, 2.5h is reacted, product is washed with deionized 5 times, centrifuged, obtain aldehyde radical wheat straw fiber element.
15gFeCl36H2O and 6gFeCl24H2O and 150mL deionized waters are added in three-necked flask, stirring is equal
It is even, 50 DEG C are warming up to after nitrogen protection 30min, the ammonia spirit that 35g mass concentrations are 25~30%, ammonia spirit is then added dropwise
Rear nitrogen protection isothermal reaction 6h is added dropwise, is cooled to room temperature, deionized water is washed 5 times, magnet separation, obtains magnetic Nano
Particle；2.5g magnetic nano-particles, 5g Silane coupling agent KH550s and 100mL deionized waters are added in three-necked flask and stirred
Uniformly, 50 DEG C are warming up to after nitrogen protection 30min, the ammonia spirit that 6g mass concentrations are 25~30% is then added dropwise, nitrogen is protected
Room temperature is cooled to after shield isothermal reaction 6h, deionized water is washed 5 times, magnet separation, obtains KH550 modified Nano magnetic particles.
100mL deionized waters, 1.5g KH550 modified magnetics nano-particles and 3g polyethyleneimines are added to three mouthfuls of burnings
In bottle, it is uniform to be passed through nitrogen gas stirring, is warming up to 60 DEG C, then adds 4g aldehyde radicals wheat straw fiber element and 1g glutaraldehydes, nitrogen
Isothermal reaction 1.5h is protected, product is washed with deionized 3 times, Magnetic Isolation, 60 DEG C of oven dryings, crushes, obtains magnetic
Wheat straw fiber element dye sorbent, saturation magnetization 10emu/g, remanent magnetism and coercivity go to zero, and have paramagnetic
Property and magnetic responsiveness；For Cationic Bright Yellow 7GL, active black RB5, alizarin red and the sunset yellow water that initial concentration is 800mg/L
Solution, magnetic wheat straw fiber element dye sorbent Cationic Bright Yellow 7GL, active black RB5, alizarin red and sunset yellow absorption are held
Amount respectively reaches 193mg/g, 120mg/g, 98mg/g and 86mg/g, and 80min reaches adsorption equilibrium, after recycling utilization 5 times
Cationic Bright Yellow 7GL, active black RB5, alizarin red and sunset yellow adsorption capacity exceed first time adsorption capacity 75%.
Embodiment 3：
Broomcorn straw is cut into fragment, is washed with deionized 3 times, 60 DEG C of drying of baking oven is put into, crushes, sieve takes 150 mesh
Broomcorn straw powder, 30g broomcorn straws powder and 10g sodium chlorites are added to 200mL pH=3.5 Acetic acid-sodium acetate
Cushioning liquid, 90 DEG C are warming up to, room temperature is cooled to after reacting 2h, filtered, deionized water is washed 5 times, is centrifuged, 80 DEG C of baking ovens
It dry, pulverize, obtain pre-processing broomcorn straw；It is 5% that 15g pretreatment broomcorn straws are added into 150mL mass concentrations
NaOH solution, 60 DEG C are warming up to, react 6h, filtering, deionized water is washed 5 times, is centrifuged, and it is fine to obtain pretreatment broomcorn straw
Dimension element；20g pretreatment broomcorn straws cellulose, 8g sodium metaperiodates and 150mL deionized waters are added in three-necked flask, heated up
To 40 DEG C, 3h is reacted, product is washed with deionized 5 times, centrifuged, obtain aldehyde radical broomcorn straw cellulose.
10gFeCl36H2O and 5gFeCl24H2O and 100mL deionized waters are added in three-necked flask, stirring is equal
It is even, 80 DEG C are warming up to after nitrogen protection 30min, the ammonia spirit that 25g mass concentrations are 25~30%, ammonia spirit is then added dropwise
Rear nitrogen protection isothermal reaction 3h is added dropwise, is cooled to room temperature, deionized water is washed 4 times, magnet separation, obtains magnetic Nano
Particle；3g magnetic nano-particles, 8g Silane coupling agent KH550s and 150mL deionized waters are added in three-necked flask and stirred
It is even, 80 DEG C are warming up to after nitrogen protection 30min, the ammonia spirit that 10g mass concentrations are 25~30%, nitrogen protection is then added dropwise
Room temperature is cooled to after isothermal reaction 3h, deionized water is washed 3 times, magnet separation, obtains KH550 modified Nano magnetic particles.
150mL deionized waters, 5g KH550 modified magnetics nano-particles and 2g polyethyleneimines are added to three-necked flask
In, it is uniform to be passed through nitrogen gas stirring, is warming up to 40 DEG C, then adds 3g aldehyde radical broomcorn straw celluloses and 1g glutaraldehydes, and nitrogen is protected
Isothermal reaction 3h is protected, product is washed with deionized 5 times, Magnetic Isolation, 80 DEG C of oven dryings, crushes, obtains magnetic sorghum
Stalk cellulose dye sorbent, saturation magnetization 30emu/g, remanent magnetism and coercivity go to zero, have paramagnetism and
Magnetic responsiveness；For crystal violet, methylene blue, sunset yellow and the Alizarin Green aqueous solution that initial concentration is 600mg/L, magnetic sorghum
Stalk cellulose dye sorbent crystal violet, methylene blue, sunset yellow and Alizarin Green adsorption capacity respectively reach 150mg/g,
100mg/g, 85mg/g and 72mg/g, 100min reach adsorption equilibrium, crystal violet, methylene blue after recycling utilization 5 times,
Sunset yellow and Alizarin Green adsorption capacity exceed the 75% of first time adsorption capacity.
Embodiment 4：
Soybean stalk is cut into fragment, is washed with deionized 5 times, 80 DEG C of drying of baking oven is put into, crushes, sieve takes 200 mesh
Soybean stalk powder, 15g soybean stalk powders and 4g sodium chlorites are added to 150mL pH=4.8 Acetic acid-sodium acetate
Cushioning liquid, 50 DEG C are warming up to, room temperature is cooled to after reacting 6h, filtered, deionized water is washed 5 times, is centrifuged, 60 DEG C of baking ovens
It dry, pulverize, obtain pretreated soybean stalk；It is 10% that 30g pretreated soybean stalks are added into 200mL mass concentrations
NaOH solution, 90 DEG C are warming up to, react 2h, filtering, deionized water is washed 5 times, is centrifuged, and obtains pretreated soybean stalk fibre
Dimension element；30g pretreated soybeans stalk cellulose, 10g sodium metaperiodates and 200mL deionized waters are added in three-necked flask, risen
Temperature reacts 1.5h, product is washed with deionized 5 times to 60 DEG C, centrifuges, obtains aldehyde radical soybean stalk cellulose.
30gFeCl36H2O and 10gFeCl24H2O and 200mL deionized waters are added in three-necked flask, stirred
Uniformly, 70 DEG C are warming up to after nitrogen protection 30min, the ammonia spirit that 60g mass concentrations are 25~30% is then added dropwise, ammoniacal liquor is molten
Rear nitrogen protection isothermal reaction 4h is added dropwise in liquid, is cooled to room temperature, and deionized water is washed 5 times, magnet separation, is obtained magnetic and is received
Rice corpuscles；5g magnetic nano-particles, 15g Silane coupling agent KH550s and 200mL deionized waters are added in three-necked flask and stirred
Uniformly, 70 DEG C are warming up to after nitrogen protection 30min, the ammonia spirit that 15g mass concentrations are 25~30% is then added dropwise, nitrogen is protected
Room temperature is cooled to after shield isothermal reaction 4h, deionization is washed 5 times or so, magnet separation, obtains KH550 modified Nano magnetic grains
Son.
200mL deionized waters, 5g KH550 modified magnetics nano-particles and 5g polyethyleneimines are added to three-necked flask
In, it is uniform to be passed through nitrogen gas stirring, is warming up to 70 DEG C, then adds 6g aldehyde radical soybean stalk celluloses and 2g glutaraldehydes, and nitrogen is protected
Isothermal reaction 1h is protected, product is washed with deionized 5 times, Magnetic Isolation, 60 DEG C of oven dryings, crushes, obtains magnetic soybean
Stalk cellulose dye sorbent, saturation magnetization 18.6emu/g, remanent magnetism and coercivity go to zero, and have paramagnetism
And magnetic responsiveness；For methylene blue, methyl green, active black RB5 and the Alizarin Red Aqueous Solution that initial concentration is 300mg/L, magnetic
Property soybean stalk cellulose dye adsorbent methylene blue, methyl green, active black RB5 and alizarin red adsorption capacity respectively reach
82mg/g, 77mg/g, 72mg/g and 60mg/g, 120min reach adsorption equilibrium, methylene blue after recycling utilization 5 times,
Methyl green, active black RB5 and alizarin red adsorption capacity exceed the 75% of first time adsorption capacity.
Embodiment 5：
Cotton stalk is cut into fragment, is washed with deionized 3 times, 60 DEG C of drying of baking oven is put into, crushes, sieve takes 100 mesh
Cotton stalk powder, 10g cotton stalks powder and 3g sodium chlorites are added to 100mL pH=4.5 Acetic acid-sodium acetate
Cushioning liquid, 80 DEG C are warming up to, room temperature is cooled to after reacting 3h, filtered, deionized water is washed 3 times, is centrifuged, 80 DEG C of baking ovens
It dry, pulverize, obtain pre-processing cotton stalk；It is 10% that 10g pretreatment cotton stalks are added into 100mL mass concentrations
NaOH solution, 80 DEG C are warming up to, react 3h, filtering, deionized water is washed 3 times, is centrifuged, and it is fine to obtain pretreatment cotton stalk
Dimension element；10g pretreatment producing fibre from cotton stalk element, 5g sodium metaperiodates and 100mL deionized waters are added in three-necked flask, heated up
To 55 DEG C, 2h is reacted, product is washed with deionized 3 times, centrifuged, obtain aldehyde radical producing fibre from cotton stalk element.
19.6g FeCl36H2O and 7.2g FeCl24H2O and 150mL deionized waters are added in three-necked flask,
Stir, be warming up to 60 DEG C after nitrogen protection 30min, the ammonia spirit that 50g mass concentrations are 25~30%, ammonia is then added dropwise
Rear nitrogen protection isothermal reaction 5h is added dropwise in the aqueous solution, is cooled to room temperature, and deionized water is washed 3 times, magnet separation, obtains magnetic
Property nano-particle；1g magnetic nano-particles, 2g Silane coupling agent KH550s and 100mL deionized waters are added in three-necked flask
Stir, be warming up to 60 DEG C after nitrogen protection 30min, the ammonia spirit that 2g mass concentrations are 25~30%, nitrogen is then added dropwise
Room temperature is cooled to after gas shielded isothermal reaction 5h, deionized water is washed 5 times, magnet separation, obtains KH550 modified Nano magnetic grains
Son.
100mL deionized waters, 0.5g KH550 modified magnetics nano-particles and 0.5g polyethyleneimines are added to three mouthfuls
In flask, it is uniform to be passed through nitrogen gas stirring, is warming up to 50 DEG C, then adds 1g aldehyde radicals producing fibre from cotton stalk element and 0.2g glutaraldehydes,
Nitrogen protects isothermal reaction 2h, product is washed with deionized 3 times, Magnetic Isolation, 80 DEG C of oven dryings, crushes, obtains magnetic
Property producing fibre from cotton stalk element dye sorbent, saturation magnetization 15.2emu/g, remanent magnetism and coercivity go to zero, had
Paramagnetism and magnetic responsiveness；For crystal violet, Cationic Bright Yellow 7GL, sunset yellow and the alizarin clear water that initial concentration is 100mg/L
Solution, magnetic producing fibre from cotton stalk element dye sorbent crystal violet, Cationic Bright Yellow 7GL, methyl orange and Congo red adsorption capacity
Respectively reach 73mg/g, 68mg/g, 54mg/g and 50mg/g, 150min reaches adsorption equilibrium, the knot after recycling utilization 5 times
Crystalviolet, Cationic Bright Yellow 7GL, methyl orange and Congo red adsorption capacity exceed the 75% of first time adsorption capacity.
Claims (3)
1. a kind of preparation method of magnetic stalk cellulose dye sorbent, it is characterised in that have following processing step：
Stalk is cut into fragment, is washed with deionized 3~5 times, the drying of 60~80 DEG C of baking oven is put into, crushes, sieve takes 100~
The stalk powder of 200 mesh, stalk powder and sodium chlorite are added to the NaAc_HAc buffer solution of pH=3.5~5.5, risen
Temperature is cooled to room temperature to 50~90 DEG C after reacting 2~6h, filters, and deionized water is washed 3~5 times, centrifuges, 60~80 DEG C
Oven drying, crush, obtain pretreated straw；Stalk powder, sodium chlorite and the Acetic acid-sodium acetate of pH=3.5~5.5 buffering
The mass ratio of solution is 10~30：3~10：100~200；
Pretreated straw is added to the NaOH solution that mass concentration is 5~10%, 60~90 DEG C is warming up to, reacts 2~6h, mistake
Filter, deionized water are washed 3~5 times, are centrifuged, are obtained pretreated straw cellulose；Pretreated straw and mass concentration be 5~
The mass ratio of 10% NaOH solution is 10~30：100~200；
Pretreated straw cellulose, sodium metaperiodate and deionized water are added in three-necked flask, are warming up to 40~60 °C, reaction
1.5~3h, product is washed with deionized 3~5 times, centrifuges, obtain aldehyde radical stalk cellulose；Pretreated straw fiber
The mass ratio of element, sodium metaperiodate and deionized water is 10~30：5~10：100~200；
FeCl36H2O, FeCl24H2O and deionized water are added in three-necked flask, stirred, nitrogen protection
50~80 °C are warming up to after 30min, the ammonia spirit that mass concentration is 25~30% is then added dropwise, after ammonia spirit is added dropwise
Nitrogen protects 3~6h of isothermal reaction, is cooled to room temperature, and deionized water is washed 3~5 times, magnet separation, obtains magnetic nano particle
Son；The ammonia spirit and the mass ratio of deionized water that FeCl36H2O, FeCl24H2O, mass concentration are 25~30% are 10
~30:5~10：25~60:100~200；
Magnetic nano-particle, Silane coupling agent KH550 and deionized water are added in three-necked flask and stirred, nitrogen protection
50~80 °C are warming up to after 30min, mass concentration is then added dropwise as 25~30% ammonia spirit, nitrogen protection isothermal reaction 3~
Room temperature is cooled to after 6h, deionized water is washed 3~5 times, magnet separation, obtains KH550 modified Nano magnetic particles；Magnetic Nano
The ammonia spirit and the mass ratio of deionized water that particle, Silane coupling agent KH550, mass concentration are 25~30% are 1~5:2~
15：2~15:100~200；
Deionized water, KH550 modified magnetics nano-particle and polyethyleneimine are added in three-necked flask, are passed through nitrogen gas stirring
Uniformly, 40~70 °C are warming up to, aldehyde radical stalk cellulose and glutaraldehyde is then added, nitrogen protection 1~3h of isothermal reaction, will produce
Thing is washed with deionized 3~5 times, Magnetic Isolation, 60~80 DEG C of oven dryings, crushes, obtains magnetic stalk cellulose dyestuff
Adsorbent；Aldehyde radical stalk cellulose, KH550 modified magnetics nano-particle, polyethyleneimine, the quality of glutaraldehyde and deionized water
Than for 1~6:0.5~5:0.5~5：0.2~2：100~200；
Magnetic stalk cellulose dye sorbent saturation magnetization is 10~30 emu/g, and remanent magnetism and coercivity go to zero,
It is 100~1000mg/L aqueous dye solutions for initial concentration with paramagnetism and magnetic responsiveness, Dye Adsorption capacity reaches 50
~300mg/g, 60~150min reach adsorption equilibrium, and the Dye Adsorption capacity after recycling utilization 5 times exceedes to be inhaled for the first time
The 75% of attached capacity.
A kind of 2. preparation method of magnetic stalk cellulose dye sorbent according to claim 1, it is characterised in that：Institute
The stalk stated is selected from maize straw, wheat stalk, soybean stalk, rice straw, jowar stalk and cotton stalk.
A kind of 3. preparation method of magnetic stalk cellulose dye sorbent according to claim 1, it is characterised in that：
Described dyestuff is selected from methylene blue, cationic blue FGL, cation orange R, Cationic Bright Yellow 7GL, cationic pink fg, methyl
Green, crystal violet, methyl orange, active black RB5, Congo red, alizarin red, sunset yellow, Alizarin Green, acid chromium blue k and eosin W or W S.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710598515.XA CN107349909B (en) | 2017-07-21 | 2017-07-21 | A kind of preparation method of magnetism stalk cellulose dye sorbent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710598515.XA CN107349909B (en) | 2017-07-21 | 2017-07-21 | A kind of preparation method of magnetism stalk cellulose dye sorbent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107349909A true CN107349909A (en) | 2017-11-17 |
| CN107349909B CN107349909B (en) | 2019-09-20 |
Family
ID=60285406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710598515.XA Active CN107349909B (en) | 2017-07-21 | 2017-07-21 | A kind of preparation method of magnetism stalk cellulose dye sorbent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107349909B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109092265A (en) * | 2018-09-10 | 2018-12-28 | 陕西科技大学 | A kind of Studies On Preparation And Properties of Cellulose-based Adsorbents and its preparation method and application that polyimidazole is ion liquid modified |
| CN110833820A (en) * | 2019-10-23 | 2020-02-25 | 浙江理工大学 | Preparation method of cellulose nanofiber-based reusable environment restoration material capable of adsorbing heavy metal ions and dyes |
| CN110898817A (en) * | 2019-11-29 | 2020-03-24 | 南昌大学 | Preparation method and application of polyethyleneimine modified magnetic bamboo powder material |
| CN111468071A (en) * | 2020-04-09 | 2020-07-31 | 中冶华天工程技术有限公司 | Rapid preparation method of magnetically separable composite adsorption material |
| CN111482161A (en) * | 2020-04-17 | 2020-08-04 | 青岛理工大学 | Magnetic biological manganese oxide adsorption material and preparation and application thereof |
| CN113318784A (en) * | 2021-05-27 | 2021-08-31 | 昆明理工大学 | Preparation method and application of corn straw loaded nano osmium composite filter column |
| CN113617342A (en) * | 2021-09-24 | 2021-11-09 | 长春工业大学 | Preparation method of aminated bagasse/graphene composite aerogel and application of aminated bagasse/graphene composite aerogel in wastewater treatment |
| CN114934386A (en) * | 2022-02-25 | 2022-08-23 | 浙江理工大学 | P-N-Si series organic-inorganic hybrid flame-retardant cotton fabric and preparation method thereof |
| WO2022174551A1 (en) * | 2021-02-20 | 2022-08-25 | 山东省环境保护科学研究设计院有限公司 | Magnetic core-shell nanosphere for adsorption of phenolic pollutant, preparation method, and application |
| CN117920150A (en) * | 2024-03-22 | 2024-04-26 | 北京大学 | Cellulose porous nanocomposite and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014044182A1 (en) * | 2012-09-19 | 2014-03-27 | 清华大学 | Magnetic-core coated type inorganic ion adsorbent for removing cs ion from radioactive waste water, and preparation method thereof |
| CN103881033A (en) * | 2014-02-26 | 2014-06-25 | 成都理工大学 | Preparation method of crop straw dye adsorption material |
-
2017
- 2017-07-21 CN CN201710598515.XA patent/CN107349909B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014044182A1 (en) * | 2012-09-19 | 2014-03-27 | 清华大学 | Magnetic-core coated type inorganic ion adsorbent for removing cs ion from radioactive waste water, and preparation method thereof |
| CN103881033A (en) * | 2014-02-26 | 2014-06-25 | 成都理工大学 | Preparation method of crop straw dye adsorption material |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109092265B (en) * | 2018-09-10 | 2021-02-19 | 陕西科技大学 | Cellulose-based adsorbent modified by polyimidazole ionic liquid and preparation method and application thereof |
| CN109092265A (en) * | 2018-09-10 | 2018-12-28 | 陕西科技大学 | A kind of Studies On Preparation And Properties of Cellulose-based Adsorbents and its preparation method and application that polyimidazole is ion liquid modified |
| CN110833820A (en) * | 2019-10-23 | 2020-02-25 | 浙江理工大学 | Preparation method of cellulose nanofiber-based reusable environment restoration material capable of adsorbing heavy metal ions and dyes |
| CN110833820B (en) * | 2019-10-23 | 2023-06-09 | 浙江理工大学 | Preparation method of cellulose nanofiber-based reusable environment restoration material capable of adsorbing heavy metal ions and dyes |
| CN110898817A (en) * | 2019-11-29 | 2020-03-24 | 南昌大学 | Preparation method and application of polyethyleneimine modified magnetic bamboo powder material |
| CN111468071B (en) * | 2020-04-09 | 2022-09-20 | 中冶华天工程技术有限公司 | Rapid preparation method of magnetically separable composite adsorption material |
| CN111468071A (en) * | 2020-04-09 | 2020-07-31 | 中冶华天工程技术有限公司 | Rapid preparation method of magnetically separable composite adsorption material |
| CN111482161B (en) * | 2020-04-17 | 2021-04-16 | 青岛理工大学 | Magnetic biological manganese oxide adsorption material and preparation and application thereof |
| CN111482161A (en) * | 2020-04-17 | 2020-08-04 | 青岛理工大学 | Magnetic biological manganese oxide adsorption material and preparation and application thereof |
| WO2022174551A1 (en) * | 2021-02-20 | 2022-08-25 | 山东省环境保护科学研究设计院有限公司 | Magnetic core-shell nanosphere for adsorption of phenolic pollutant, preparation method, and application |
| CN113318784B (en) * | 2021-05-27 | 2022-07-05 | 昆明理工大学 | Preparation method and application of corn straw loaded nano osmium composite filter column |
| CN113318784A (en) * | 2021-05-27 | 2021-08-31 | 昆明理工大学 | Preparation method and application of corn straw loaded nano osmium composite filter column |
| CN113617342A (en) * | 2021-09-24 | 2021-11-09 | 长春工业大学 | Preparation method of aminated bagasse/graphene composite aerogel and application of aminated bagasse/graphene composite aerogel in wastewater treatment |
| CN114934386A (en) * | 2022-02-25 | 2022-08-23 | 浙江理工大学 | P-N-Si series organic-inorganic hybrid flame-retardant cotton fabric and preparation method thereof |
| CN117920150A (en) * | 2024-03-22 | 2024-04-26 | 北京大学 | Cellulose porous nanocomposite and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107349909B (en) | 2019-09-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107349909B (en) | A kind of preparation method of magnetism stalk cellulose dye sorbent | |
| CN107362777B (en) | A kind of preparation method of magnetism stalk cellulose adsorbent for heavy metal | |
| CN107376870A (en) | A kind of preparation method of magnetic polymer dye sorbent | |
| Bagotia et al. | A review on modified sugarcane bagasse biosorbent for removal of dyes | |
| CN101670266B (en) | Method for removing organic cationic dyes from waste water by magnetic nano adsorption material | |
| Wang et al. | Triethylenetetramine-modified hollow Fe3O4/SiO2/chitosan magnetic nanocomposites for removal of Cr (VI) ions with high adsorption capacity and rapid rate | |
| Zhang et al. | Research progress of adsorption and removal of heavy metals by chitosan and its derivatives: A review | |
| Wang et al. | Preparation of magnetic chitosan corn straw biochar and its application in adsorption of amaranth dye in aqueous solution | |
| Noor et al. | Agricultural biomass-derived magnetic adsorbents: Preparation and application for heavy metals removal | |
| Zhou et al. | Adsorption of acid dyes from aqueous solutions by the ethylenediamine-modified magnetic chitosan nanoparticles | |
| Li et al. | Efficient adsorption of both methyl orange and chromium from their aqueous mixtures using a quaternary ammonium salt modified chitosan magnetic composite adsorbent | |
| CN107349916B (en) | A kind of preparation method of magnetic polymer adsorbent for heavy metal | |
| Meng et al. | Adsorption of Cu2+ ions using chitosan-modified magnetic Mn ferrite nanoparticles synthesized by microwave-assisted hydrothermal method | |
| CN107999033A (en) | A kind of poly-dopamine/aminated carbon nano tube/sodium alginate micro ball of arsenic-adsorbing | |
| CN102079823A (en) | Method for preparing ethylenediamine modified chitosan composite magnetic microspheres and application thereof | |
| Sivashankar et al. | Environmental Nanotechnology, Monitoring & Management | |
| Feng et al. | An environmental-friendly magnetic bio-adsorbent for high-efficiency Pb (Ⅱ) removal: Preparation, characterization and its adsorption performance | |
| Yu et al. | A simple method to prepare magnetic modified beer yeast and its application for cationic dye adsorption | |
| Mahmoud et al. | Doping starch-gelatin mixed hydrogels with magnetic spinel ferrite@ biochar@ molybdenum oxide as a highly efficient nanocomposite for removal of lead (II) ions | |
| CN106365239A (en) | Preparation method and application of magnetic graphene oxide/chitosan adsorbent | |
| Yang et al. | Flower-like core-shell Fe3O4@ MnO2 microspheres: Synthesis and selective removal of Congo red dye from aqueous solution | |
| CN104226259A (en) | Threonine modified attapulgite adsorbent and application thereof | |
| CN104353437B (en) | A kind of core-shell magnetic poly m-phenylene diamine nano particle and preparation thereof and application | |
| CN105439272B (en) | Ferrite MFe2O4Magnetic nanoparticle is for method of removal waste water containing tellurium and application thereof | |
| Gao et al. | Enhanced adsorption of copper ions from aqueous solution by two-step DTPA-modified magnetic cellulose hydrogel beads |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |