CN107814385A - A kind of method for handling industrial wastewater using biomass char and preparing graphite mould porous carbon materials - Google Patents

A kind of method for handling industrial wastewater using biomass char and preparing graphite mould porous carbon materials Download PDF

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Publication number
CN107814385A
CN107814385A CN201711139135.6A CN201711139135A CN107814385A CN 107814385 A CN107814385 A CN 107814385A CN 201711139135 A CN201711139135 A CN 201711139135A CN 107814385 A CN107814385 A CN 107814385A
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industrial wastewater
porous carbon
biomass char
biomass
graphite mould
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CN107814385B (en
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胡松
陈小芳
向军
任强强
何立模
廖广
张玉飞
张雅妮
苏胜
汪
汪一
许凯
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Huazhong University of Science and Technology
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Huazhong University of Science and Technology
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    • 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
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • 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
    • C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • 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
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • 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
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • C02F2101/203—Iron or iron compound
    • 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
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • C02F2101/22—Chromium or chromium compounds, e.g. chromates

Abstract

The present invention relates to a kind of method for handling industrial wastewater using biomass char and preparing graphite mould porous carbon materials, it comprises the following steps：S1. biomass solid wastes are changed into biomass char through pyrolysis, and biomass char obtains carbon-based sorbing material through pickling deliming and modification；S2. industrial wastewater is pre-processed, puts into carbon-based sorbing material obtained by appropriate S1, after being sufficiently mixed absorption, separation of solid and liquid, obtain being adsorbed with the solid matter of metal ion and part acid ion；S3. take solid matter obtained by S2 appropriate, activation pore-creating occurs in inert atmosphere at a certain temperature and is reacted with catalyzed graphitization, obtains graphite mould porous carbon materials.Beneficial effects of the present invention are, prepared by biomass solid wastes, wastewater treatment and graphite mould porous carbon materials combined, reduce the cost of material for preparing graphite mould porous carbon materials, the concept that active principle converts to more application materials in discarded object is proposed, realizes the recycling of biomass solid wastes and industrial wastewater.

Description

It is a kind of to handle industrial wastewater using biomass char and prepare graphite mould porous carbon materials Method
Technical field
The invention belongs to biomass solid wastes and Industrial Wastewater Treatment and recycling field, and in particular to a kind of Industrial wastewater and the method for preparing graphite mould porous carbon materials are handled using biomass char.
Background technology
The advantages that graphite mould porous carbon materials are because of its good electric conductivity, higher specific surface area and chemical stability quilt It is widely used as electrode material.At present, industrial graphitized stephanoporate material with carbon element is mainly using fossil fuels such as pitch and coals as original Material, carried out under 2000 DEG C of high temperature above obtained by anaerobic calcining.Its raw material sources is limited, and cost is too high and the graphitization is reacted During needed for higher reaction temperature, cause excessive energy resource consumption, the preparation cost of graphite mould porous carbon materials is quite high.Cause This, the suitable carbon source for finding low cost prepares the important research side that cost is graphite mould porous carbon materials production application to reduce To.Agriculture and forestry organic waste material wide material sources, reserves including bark, stalk, sawdust, rice chaff etc. are huge, and its recycling treatment is asked Topic receives much concern always, and such biomass castoff with higher carbon content is able to gradually be applied to catalyzed graphitization research neck Domain.Correlative study shows, added in agriculture and forestry organic waste material graphitizing process the simple substance containing metallic elements such as Fe, Ni, Cr, Cu and Its compound can effectively reduce catalyzed graphitization reaction temperature to 900 DEG C.
With the propulsion of Development of Urbanization, caused a large amount of waste water are also increasing in industrial processes, industrial wastewater In contain excess metal ion and acid ion, its directly discharge can to water body, soil and health produce serious harm. Therefore, how effectively to reduce the discharge standard that nuisance content reaches national requirements in industrial wastewater is Industrial Wastewater Treatment During the problem of receiving much concern.At present, common physics, chemistry and bioremediation easily cause secondary in processing procedure Pollution, and fail to realize the recycling of metallic element in waste water so that processing cost is higher.
The problem of existing in terms of considering the preparation of graphite mould porous carbon materials and Industrial Wastewater Treatment two, seeks both The method associated, it is expected to realize that (900 DEG C or so) obtain height at relatively low temperature while administering industrial wastewater The graphite mould porous carbon materials of added value.
The content of the invention
The present invention provides a kind of method for handling industrial wastewater using biomass char and preparing graphite mould porous carbon materials, purport To the effective utilization of biomass castoff, using biomass char caused by biomass pyrolytic to the metal ion in industrial wastewater and Organic pollution carries out adsorption treatment, and catalyzed graphitization obtains height to the intermediate product after then adsorbing at relatively low temperature The graphite mould porous carbon materials of added value.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：One kind is using biomass char processing industrial wastewater and makes The method of standby graphite mould porous carbon materials, it is characterised in that comprise the following steps：
S1. biomass solid wastes are changed into biomass char through pyrolysis, and biomass char is through pickling deliming and modification Obtain carbon-based sorbing material；
S2. industrial wastewater is pre-processed, carbon-based sorbing material obtained by S1 is then put into pretreated Industry Waste In water, after being sufficiently mixed absorption, separation of solid and liquid is simultaneously dried, and obtains being adsorbed with the solids of metal ion and part acid ion Matter；
S3. solid matter obtained by S2 is placed in inert atmosphere, calcination processing, activation pore-creating occurs and catalyzed graphitization is anti- Should, obtain the graphite mould porous carbon materials.
On the basis of above-mentioned technical proposal, the present invention can also have following further specifically chosen.
Specifically, the pyrolysis temperature of biomass solid wastes is 300-700 DEG C in S1.Wherein, biomass solid is discarded Thing is preferably using one or more combinations in the agriculture and forestry organic waste materials such as bark, stalk, sawdust and rice chaff.It is understood that Biomass solid waste can also extend further to the sorted rear material that content of ashes is low, carbon content is high of house refuse, this The technical staff in field can make more specific selection to pyrolysis temperature according to the species of specific biomass castoff.Need to illustrate , make burning after caused pyrolysis gas also collects in pyrolytic process and use.
Specifically, the pickling deliming in S1 refer at 25-70 DEG C by biomass char put into 38wt% hydrofluoric acid and 37wt% hydrochloric acid is according to 1:In the mixed acid of 1-3 volume ratio composition, immersion treatment 6-24h, then separation of solid and liquid, that is, complete acid Elution ash, wherein the usage ratio of biomass char and mixed acid is 1-5g:100mL.
Specifically, the modification in S1 refers at 25-90 DEG C, according to 1g:20-60mL solid-to-liquid ratio is by pickling deliming Immersion treatment 3-6h in the biomass char input nitric acid of completion, sodium hydroxide solution or liquor potassic permanganate, then separation of solid and liquid And dry, that is, modification is completed, the wherein concentration of nitric acid, sodium hydroxide solution or liquor potassic permanganate is 0.1-1mol/L.
Specifically, contain in S2 in pretreated industrial wastewater in metal cation corresponding to Fe, Ni, Cr and Cu element At least one and metal cation total concentration be 300-1000mg/L, containing oxygen-containing in pretreated industrial wastewater in S2 Acid ion, the total concentration of oxygen-containing acid ion is 300-500mg/L.It should be noted that industrial wastewater pretreatment refers to pair Industrial wastewater the processing such as is filtered, separated and removing solid residue in waste water, and is carried out according to its interior metal ion content situation The concentration of solution is diluted to reach the concentration of requirement.
Specifically, the oxygen-containing acid ion is NO3 2-、SO4 2-、CO3 2-And HCO3 -At least one of.Need what is illustrated It is that oxygen-containing acid group can also be chlorate anions, hypochlorite etc., and its metal salt can be decomposed into metal oxidation at high temperature in theory The oxygen-containing acid group of thing and gaseous matter.
After saliferous chlorate is attracted to modified biomass char surface, under high temperature, cation has activation pore-creating effect, Anion, which decomposes aerogenesis, has reaming effect, so as to obtain porous carbon materials.
Specifically, the solid-to-liquid ratio of carbon-based sorbing material and pretreated industrial wastewater is 1-10g in S2：1L.
Specifically, the absorption that is sufficiently mixed in S2 refers to vibrate mixing 2-12h, oscillator vibration through oscillator at room temperature Speed is 60-300 beats/min.It is understood that those skilled in the art can be according to specific adsorption effect, to absorption During hunting speed, absorption duration make more specific selection.
Specifically, the inert atmosphere in S3 refers to nitrogen atmosphere or argon gas atmosphere.The main purpose of inert atmosphere is isolation Air, prevent that air makes carbon be changed into carbon dioxide into reactor in graphitizing process.
Specifically, the temperature of calcination processing is 900-1600 DEG C in S3, hold time as 1-3h.It is understood that this The technical staff in field can do according to specific experiment demand to the reaction temperature in course of reaction, heating rate and constant temperature duration Go out more specific selection.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention is by Industrial Wastewater Treatment and biomass solid wastes recycling and graphite mould porous carbon materials Preparation integrate, the biomass char that biomass solid wastes are pyrolyzed to obtain is made after the processing of pickling deliming and chemical modification For the adsorbent containing metal cation and the industrial wastewater of acid ion, remove most metal ion in waste water and load Part acid ion, recycling then is carried out to the coke after having adsorbed, as being loaded with potential catalytic activity The raw material of the factor carries out graphitization reaction, while solves the problems, such as the secondary pollution of waste material after absorption, realizes biomass solid The common high-efficiency resource recycling of discarded object, industrial wastewater.
Brief description of the drawings
Fig. 1 is the technique provided by the invention for handling industrial wastewater using biomass char and preparing graphite mould porous carbon materials Flow chart；
Embodiment
Technical scheme is described in further detail below in conjunction with drawings and the specific embodiments, example It is served only for explaining the present invention, is not intended to limit the scope of the present invention.
The conventional method that the method used in following examples then uses for those skilled in the art unless otherwise noted, use To medicine be commercially available prod unless otherwise noted.
As shown in figure 1, the present invention provides one kind using biomass char processing industrial wastewater and prepares graphite mould porous carbon The method of material, it comprises the following steps：S1. biomass solid wastes are changed into biomass char through pyrolytic process, and coke is through acid Elution ash must have compared with the carbon-based sorbing material of the pore structure of high-adsorption-capacity with modification；S2. industrial wastewater is carried out pre- Handle without miscellaneous waste water, carbon-based sorbing material obtained by appropriate S1, after being sufficiently mixed absorption, solid-liquid point are put into by certain solid-to-liquid ratio From obtaining being adsorbed with the solid matter of metal ion and part acid ion；S3. solid matter obtained by the S2 after drying is taken to fit Amount, activation pore-creating occurs in inert atmosphere at a certain temperature and is reacted with catalyzed graphitization, obtains graphite mould porous carbon materials.
Embodiment 1
A kind of method for handling industrial wastewater using biomass char and preparing graphite mould porous carbon materials, it includes following step Suddenly：
S1. wood chip is changed into biomass char through pyrolytic process, by 5g:100mL solid-to-liquid ratio is by biomass char hydrofluoric acid (38wt%):Hydrochloric acid (37wt%)=1:2 mixed acid after pickling deliming, is washed with deionized water only, in 105 DEG C of bakings at room temperature Dried in case, then with 0.5mol/L sodium hydroxide solutions at room temperature immersion treatment 3h after in 105 DEG C of air dry ovens dry 12h, being made has compared with the carbon-based sorbing material of the pore structure of high-adsorption-capacity；
S2. by Cr6+Concentration is 300mg/L, NO3 2-Content 300mg/L electrochemical industry waste water carries out being separated by filtration removing Solid residue in waste water, it is 5g by solid-to-liquid ratio:Carbon-based sorbing material obtained by 1L proportioning input respective amount S1, is placed in constant temperature oscillation On device, rotating speed is adjusted at room temperature to 60 beats/min, it is sufficiently mixed, adsorbs 6h, separation of solid and liquid, in 105 DEG C of forced air dryings 12h is dried in case, obtains being adsorbed with Cr elements and part NO3 2-Solid matter；
S3. take solid matter obtained by S2 to be placed in right amount in high temperature process furnances, be passed through inert gas N2, temperature programming to 1200 DEG C (programming rate is 25 DEG C/min), cationic activation pore-creating is occurring and anion decomposes aerogenesis reaming and reacts to obtain porous carbon While material, the metal cation of biomass char absorption through high-temperature activation after catalysis biomass Jiao graphitization under same high temperature, There must be the graphite of certain degree of graphitization.
S3 gained graphite mould porous carbon materials are taken to carry out BET specific surface area measure and X-ray diffraction (XRD) sign, to divide Analyse its pore-size distribution and degree of graphitization.
Chromium ion concentration is 12mg/L in electrochemical industry waste water after being handled in the present embodiment, and modified biomass char is to chromium Adsorbing and removing efficiency up to more than 95%；The specific surface area of graphite mould porous carbon materials reaches 900m2/ g, degree of graphitization reach 75% More than, it is directly used in 120m obtained by catalyzed graphitization after contrast wood chip pyrolysis2/ g specific surface areas, the product of 10% degree of graphitization, Its porosity and degree of graphitization are obviously improved.
Embodiment 2
A kind of method for handling industrial wastewater using biomass char and preparing graphite mould porous carbon materials, it includes following step Suddenly：
S1. rice chaff is changed into biomass char through pyrolytic process, by 5g:100mL solid-to-liquid ratio is by biomass char hydrofluoric acid (38wt%):Hydrochloric acid (37wt%)=1:1 mixed acid after pickling deliming, is washed with deionized water only, in 105 DEG C of bakings at room temperature Dried in case, then with 0.5mol/L liquor potassic permanganates at room temperature immersion treatment 3h after in 105 DEG C of air dry ovens dry 12h, being made has compared with the carbon-based sorbing material of the pore structure of high-adsorption-capacity；
S2. by Ni2+Concentration is 500mg/L, NO3 2-Concentration is 400mg/L and SO4 2-Concentration is 100mg/L nickel-plating waste water Be separated by filtration and remove solid residue in waste water, be 5g by solid-to-liquid ratio:Carbon-based absorption obtained by 1L proportioning input respective amount S1 Material, it is placed on constant temperature oscillator, adjusts rotating speed at room temperature to 60 beats/min, be sufficiently mixed it, adsorbs 6h, solid-liquid point From dry 12h, obtains being adsorbed with Ni elements, part NO in 105 DEG C of air dry ovens3 2-And SO4 2-Solid matter；
S3. take solid matter obtained by S2 to be placed in right amount in high temperature process furnances, be passed through inert gas N2, temperature programming to 1000 DEG C (programming rate is 15 DEG C/min), cationic activation pore-creating is occurring and anion decomposes aerogenesis reaming and reacts to obtain porous carbon While material, the metal cation of biomass char absorption through high-temperature activation after catalysis biomass Jiao graphitization under same high temperature, There must be the graphite of certain degree of graphitization.
S3 gained graphite mould porous carbon materials are taken to carry out BET specific surface area measure and X-ray diffraction (XRD) sign, to divide Analyse its pore-size distribution and degree of graphitization.
Nickel ion concentration is 10mg/L in nickel-plating waste water after being handled in the present embodiment, absorption of the modified biomass char to chromium Removal efficiency is up to 98%；The specific surface area of graphite mould porous carbon materials reaches 1120m2/ g, degree of graphitization reach more than 85%, contrast 278m obtained by catalyzed graphitization is directly used in after rice chaff pyrolysis2/ g specific surface areas, the product of 15% degree of graphitization, its porosity and Degree of graphitization is obviously improved.
Embodiment 3
A kind of method for handling industrial wastewater using biomass char and preparing graphite mould porous carbon materials, it includes following step Suddenly：
S1. straw is changed into biomass char through pyrolytic process, by 5g:100mL solid-to-liquid ratio is by biomass char hydrofluoric acid (38wt%):Hydrochloric acid (37wt%)=1:2 mixed acid after pickling deliming, is washed with deionized water only, in 105 DEG C of bakings at room temperature Dried in case, then with 0.5mol/L liquor potassic permanganates at 50 DEG C immersion treatment 3h after in 105 DEG C of air dry ovens dry 12h, being made has compared with the carbon-based sorbing material of the pore structure of high-adsorption-capacity；
S2. by Fe3+Concentration is 1000mg/L, NO3 2-Concentration is 450mg/L and CO3 2-Concentration is 50mg/L metallurgical industry Waste water, which be separated by filtration, removes solid residue in waste water, is 5g by solid-to-liquid ratio:It is carbon-based obtained by 1L proportioning input respective amount S1 Sorbing material, it is placed on constant temperature oscillator, adjusts rotating speed at room temperature to 60 beats/min, be sufficiently mixed it, adsorb 6h, Gu Liquid is separated, and 12h is dried in 105 DEG C of air dry ovens, obtains being adsorbed with Fe elements and part NO3 2-Solid matter；
S3. take solid matter obtained by S2 to be placed in right amount in high temperature process furnances, be passed through inert gas N2, temperature programming to 900 DEG C (programming rate is 5 DEG C/min), cationic activation pore-creating is occurring and anion decomposes aerogenesis reaming and reacts to obtain porous carbon While material, the metal cation of biomass char absorption through high-temperature activation after catalysis biomass Jiao graphitization under same high temperature, There must be the graphite of certain degree of graphitization.
S3 gained graphite mould porous carbon materials are taken to carry out BET specific surface area measure and X-ray diffraction (XRD) sign, to divide Analyse its pore-size distribution and degree of graphitization.
Fe ion concentrations are 100mg/L in metallurgical waste water after being handled in the present embodiment, and modified biomass char is to chromium Adsorbing and removing efficiency up to 90%；The specific surface area of graphite mould porous carbon materials reaches 1500m2/ g, degree of graphitization reach 95% with On, it is directly used in 350m obtained by catalyzed graphitization after contrast straw pyrolysis2/ g specific surface areas, the product of 20% degree of graphitization, its Pore-creating rate and degree of graphitization are obviously improved.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.

Claims (10)

  1. A kind of 1. method for handling industrial wastewater using biomass char and preparing graphite mould porous carbon materials, it is characterised in that bag Include following steps：
    S1. biomass solid wastes are changed into biomass char through pyrolysis, and biomass char obtains carbon through pickling deliming and modification Adsorbing material；
    S2. industrial wastewater is pre-processed, then put into carbon-based sorbing material obtained by S1 in pretreated industrial wastewater, After being sufficiently mixed absorption, separation of solid and liquid simultaneously dries the solid isolated, and obtains being adsorbed with metal ion and part acid ion Solid matter；
    S3. solid matter obtained by S2 is placed in inert atmosphere, calcination processing, activation pore-creating occurs and is reacted with catalyzed graphitization, Obtain the graphite mould porous carbon materials.
  2. A kind of handle industrial wastewater 2. according to claim 1 using biomass char and prepare graphite mould porous carbon materials Method, it is characterised in that the pyrolysis temperature of biomass solid wastes is 300-700 DEG C in S1.
  3. A kind of handle industrial wastewater 3. according to claim 1 using biomass char and prepare graphite mould porous carbon materials Method, it is characterised in that the pickling deliming in S1 refer at 25-70 DEG C by biomass char put into 38wt% hydrofluoric acid and 37wt% hydrochloric acid is according to 1:In the mixed acid of 1-3 volume ratio composition, immersion treatment 6-24h, then separation of solid and liquid, gained solid Biomass char as after the completion of pickling deliming, the wherein usage ratio of biomass char and mixed acid are 1-5g:100mL.
  4. A kind of handle industrial wastewater 4. according to claim 3 using biomass char and prepare graphite mould porous carbon materials Method, it is characterised in that the modification in S1 refers at 25-90 DEG C, according to 1g:20-60mL solid-to-liquid ratio takes off pickling Immersion treatment 3-6h in biomass char input nitric acid, sodium hydroxide solution or liquor potassic permanganate after the completion of ash, then solid-liquid Separate and dry the solid isolated, produce carbon-based sorbing material, wherein nitric acid, sodium hydroxide solution or liquor potassic permanganate Concentration be 0.1-1mol/L.
  5. A kind of handle industrial wastewater 5. according to claim 1 using biomass char and prepare graphite mould porous carbon materials Method, it is characterised in that contain metal cation corresponding to Fe, Ni, Cr and Cu element in S2 in pretreated industrial wastewater At least one of, and the total concentration of metal cation is 300-1000mg/L, is contained in S2 in pretreated industrial wastewater Oxygen-containing acid ion, the total concentration of oxygen-containing acid ion is 300-500mg/L.
  6. A kind of handle industrial wastewater 6. according to claim 5 using biomass char and prepare graphite mould porous carbon materials Method, it is characterised in that the oxygen-containing acid ion is NO3 2-、SO4 2-、CO3 2-And HCO3 -At least one of.
  7. A kind of handle industrial wastewater 7. according to claim 5 using biomass char and prepare graphite mould porous carbon materials Method, it is characterised in that the solid-to-liquid ratio of carbon-based sorbing material and pretreated industrial wastewater is 1-10g in S2:1L.
  8. A kind of handle industrial wastewater 8. according to claim 1 using biomass char and prepare graphite mould porous carbon materials Method, it is characterised in that the absorption that is sufficiently mixed in S2 refers to shake through oscillator vibration mixing 2-12h, oscillator at room temperature Speed is swung for 60-300 beats/min.
  9. A kind of handle industrial wastewater 9. according to claim 1 using biomass char and prepare graphite mould porous carbon materials Method, it is characterised in that the inert atmosphere in S3 refers to nitrogen atmosphere or argon gas atmosphere.
  10. 10. one kind according to any one of claim 1 to 9 is using biomass char processing industrial wastewater and to prepare graphite mould more The method of hole carbon material, it is characterised in that the temperature of calcination processing is 900-1600 DEG C in S3, is held time as 1-3h.
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CN108557799A (en) * 2018-06-04 2018-09-21 河南工程学院 A kind of high-purity high conductivity class graphene grading-hole porous charcoal and preparation method thereof
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CN109319762B (en) * 2018-11-15 2022-02-22 西北师范大学 Preparation of biomass porous carbon material with ultrahigh specific surface area and application of biomass porous carbon material as electrode material
CN109355803A (en) * 2018-11-30 2019-02-19 中科院广州化学有限公司 A kind of preparation method coating polysulfide Electrospun nano-fibers film and its application in the case where aoxidizing stimuli responsive in adsorbing metal ions
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CN110577299B (en) * 2019-10-18 2021-08-27 河北渤海远达环境检测技术服务有限公司 Method for treating hot galvanizing pickling wastewater and preparing carbon-loaded iron-zinc binary metal composite material

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