CN107282001A - A kind of preparation of aluminium polychloride modified graphene oxide adsorbent and its application process - Google Patents
A kind of preparation of aluminium polychloride modified graphene oxide adsorbent and its application process Download PDFInfo
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- CN107282001A CN107282001A CN201710519567.3A CN201710519567A CN107282001A CN 107282001 A CN107282001 A CN 107282001A CN 201710519567 A CN201710519567 A CN 201710519567A CN 107282001 A CN107282001 A CN 107282001A
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- graphene oxide
- aluminium polychloride
- modified graphene
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- aliphatic acid
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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
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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
- B01J20/0203—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04
- B01J20/0274—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04 characterised by the type of anion
- B01J20/0288—Halides of compounds other than those provided for in B01J20/046
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- 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
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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- 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
- C02F2101/34—Organic compounds containing oxygen
Abstract
The invention discloses a kind of method of aliphatic acid in utilization aluminium polychloride modified graphene oxide adsorbing and removing waste water, using native graphite as raw material, graphene oxide suspension is prepared with Hummer methods；Then a certain amount of polymeric aluminum chlorides solution is added thereto, is mixed, is obtained aluminium polychloride modified graphene oxide suspension.Aluminium polychloride modified graphene oxide suspension is mixed according to a certain volume with waste water, vibrated, the graphene oxide suspension for having adsorbed aliphatic acid is obtained, graphene oxide is converted into floc sedimentation simultaneously.Filtering, acquisition is stripped of the graphene oxide after the purified water of aliphatic acid and adsorption reaction.The present invention is modified using aluminium polychloride to graphene oxide, surface of graphene oxide electric charge is set to turn negative number to positive number, by Electrostatic Absorption and chemisorbed, improve adsorption capacity of the graphene oxide adsorbent to aliphatic acid, by the flocculation of aluminium polychloride, greatly improve the solid-liquid separation efficiency of graphene oxide adsorbent.
Description
Technical field
The present invention relates to a kind of method of aliphatic acid in utilization aluminium polychloride modified graphene oxide adsorbing and removing waste water.
Background technology
The usage amount of surfactant increases year by year, is constantly expanded using scope, the harm to health and environment
It is increasingly severe.Harm of the surfactant to health, which is mainly reflected in it, has chronic toxicity, can cause hemoglobin,
The change of red blood cell and quantity of leucocyte, and the skin of people is damaged.The concentration of surfactant reaches 1mgL-1
When, surfactant can form a large amount of foams in water body, not only have impact on the landscape of natural water, and water surface formation every
Absciss layer, so as to reduce dissolving and the transfer rate of oxygen, reduces the gas exchanges between water and air, causes water quality deterioration.With
Water irrigated farmland containing surfactant, can be such that the leaf of crops slowly crimps, and root gradually becomes thin and short, and palm fibre occurs in epiblem
The aging phenomenon of color fleck, the yield of crops is severely impacted.Fail the surfactant being degraded in a large amount of water bodys
After adsorption by soil, suction-operated of the soil to organic poison is significantly reduced, and Soil Microorganism may be changed
Composition, cause indirect pollution to environment, thus surfactant to the pollution of water body increasingly by government department and people
Concern.
China aoxidizes ore resources, including non-ferrous metal oxide ore, the characteristics of with " poor, thin, miscellaneous ", and flotation turns at present most
Conventional dressing method, and this surfactant of aliphatic acid is wide variety of a kind of flotation collecting in oxide ore flotation operation
Agent.In oxide ore flotation process, in order to improve the utilization rate of fresh water, the tailing water after sorting needs to recycle, and causes collecting
Agent aliphatic acid is constantly enriched with ore dressing plant flotation water circulation system.Fatty acid ion enters flotation system with recirculated water, causes
Flotation froth is excessively stablized, and makes final sorting index undesirable.Thus, the fatty-acid collector in removing beneficiation wastewater will
Be conducive to the cycle applications of waste water or the protection of mining area ecological environment.
Surfactant removal methods are a lot, there is catalytic oxidation, biological degradation method, supercritical ultrasonics technology, micro-electrolysis method, biology
Edman degradation Edman etc., most methods have its drawback, and such as processing cost is high, effect is poor, can bring secondary pollution.Absorption method is profit
With the porous and big specific surface area of adsorbent, by the pollutant absorption in waste water on surface so as to reach separation purpose.
Physisorphtion advantage is that speed is fast, stability is good, equipment occupation of land is small.Therefore a kind of aboundresources, scale are needed badly
It is combined to that cost is relatively low, the adsorbent of aliphatic acid in the removing waste water with higher adsorption capacity.
The content of the invention
Based on above the deficiencies in the prior art, the present invention is for graphene oxide adsorbent in removing anion surface active
During agent aliphatic acid, there is electrostatic repulsion between graphene oxide adsorbent and enuatrol, greatly, adsorption capacity is small, and removing is dirty
Contaminate adsorbent high degree of dispersion after thing aliphatic acid, with purified water separation of solid and liquid it is difficult the problem of.The present invention is using aluminium polychloride to oxygen
Graphite alkene is modified, and surface of graphene oxide electric charge is turned negative number to positive number, by Electrostatic Absorption and chemisorbed, improves oxidation
Adsorption capacity of the graphene adsorbent to aliphatic acid；By the flocculation of aluminium polychloride, greatly improve graphene oxide and inhale
Attached dose of solid-liquid separation efficiency.Using aliphatic acid in aluminium polychloride modified graphene oxide adsorbing and removing waste water, to eliminate fat
The negative effect that fat acid comes to ecological environment or flotation zone.
In order to solve the above-mentioned technical problem, the present invention provides a kind of aluminium polychloride modified graphene oxide adsorbent, its
It is characterised by：Graphene oxide suspension and mass concentration comprising 0.3-0.4g/L are molten for 0.5-1.5% aluminium polychloride
Liquid is according to volume ratio 15-25:The mixing suspension of 1 mixing.
A kind of preparation method of aluminium polychloride modified graphene oxide adsorbent, it is characterised in that：Comprise the following steps：
Step 1: weighing aphanitic graphite prepares graphite oxide, graphite oxide is first then subjected to pickling, then washed, most
Use centrifuge again afterwards, take centrifuged deposit thing；
Step 2: the graphite oxide vacuum freeze drying after step one is centrifuged 24-60 hours, by dried oxidation stone
Ink is clayed into power；
Step 3: graphene oxide powder obtained by step 2 is dispersed in into water, the graphene oxide powder and water
According to 1-5g：3L ratio mixing；
Step 4: graphite oxide solution made from step 3 is carried out into ultrasound peels off 5-15min；
Step 5: the suspension centrifugation after step 4 is peeled off, supernatant liquor is graphene oxide suspension；
Step 6: take graphene oxide suspension made from step 5,15-25 by volume:1, which adds mass concentration, is
0.5-2% polymeric aluminum chlorides solution, control ph both obtains aluminium polychloride modified graphite oxide in 6.5-7.5, water-bath vibration
Alkene adsorbent.
The system of the aluminium polychloride modified graphene oxide adsorbent provided as the preferred of above-mentioned technical proposal, the present invention
Preparation Method further comprises the part or all of of following technical characteristic：
As the improvement of above-mentioned technical proposal, in step 2, the vacuum freeze drying time is 48 hours.
As the improvement of above-mentioned technical proposal, in step 3, the graphene oxide powder is with water according to 2g：3L ratio
Mixing；
As the improvement of above-mentioned technical proposal, in step 6, graphene oxide suspension made from step 5 is taken, by volume
Than 20:1 adds the polymeric aluminum chlorides solution that mass concentration is 1%, and control ph is 6-8.
The method of aliphatic acid, is comprised the following steps in aluminium polychloride modified graphene oxide adsorbent removing waste water：
S1 prepares graphene oxide suspension using native graphite as raw material using Hummer methods；Suspended to graphene oxide
Liquid adds polymeric aluminum chlorides solution, mixes stirring, obtains aluminium polychloride modified graphene oxide suspension；
S2 takes the waste water of fatty acids, is used as the object of processing；
S3 mixes aluminium polychloride modified graphene oxide suspension and waste water, and adjusts pH value；
S4 vibrates mixed liquor obtained by S3, adsorbing and removing；
S5 filters the graphene oxide suspension that aliphatic acid has been adsorbed obtained by S4.
As the improvement of above-mentioned technical proposal, the aluminium polychloride described in the S1, can for white, yellow, yellowish-brown this
The aluminium polychloride of three kinds of colors；Aluminium dioxide content 27wt%-30wt% in aluminium polychloride；Its basicity B is 30%-
95%.
As the improvement of above-mentioned technical proposal, solid product is pressed matter by the addition of the polymeric aluminum chlorides solution described in S1
Amount compares 1：3 are dissolved in water as after liquid, then add 30 mass multiples clear water be diluted to needed for be added to graphene oxide after concentration
Suspension, and ensure that the mass ratio of aluminium polychloride and graphene oxide is 1~5:1.
As the improvement of above-mentioned technical proposal, in the fatty amine waste water described in S2, the concentration of aliphatic acid is 10~5000mg/
L。
As the improvement of above-mentioned technical proposal, the aluminium polychloride modified graphene oxide suspension described in S3 is mixed with waste water
Even, its suitable adsorption reaction pH value is 6~8.
As the improvement of above-mentioned technical proposal, the adsorption reaction condition described in S4 is that 5 DEG C~50 DEG C of adsorption temp vibrates
Device rotating speed 50r/min~300r/min, adsorbing and removing time 1h~30h.
The active charcoal of conventional adsorbent, polymeric adsorbent, diatomite, kaolin etc..Several adsorbents compared to more than, oxidation
Graphene has huge specific surface area, and a large amount of active groups are contained on its surface, can form the aqueous colloidal of high stable, have
Higher adsorption capacity.It is combined in addition, graphene oxide is more easy to scale compared to CNT, its raw material prepared is nature
Graphite, aboundresources, it is relatively low that scale is combined to cost.Therefore, removing aliphatic acid using graphene oxide has very big advantage.
Compared with prior art, technical scheme has the advantages that：
Aluminium polychloride modified graphene oxide has that specific surface area is big, surface functional group is more, surface lotus positive electricity the characteristics of,
The present invention realizes the efficient absorption to anion surfactant aliphatic acid using these features.Meanwhile, after absorbing fats acid, oxygen
Graphite alkene adsorbent realizes efficient point of adsorbent and purified water in the larger floc sedimentation of granularity using sedimentation and filtration method
From.
The present invention can carry out efficient removal to aliphatic acid in waste water, adverse effect of the waste discharge to environment be reduced, to protecting
Ecological environment is protected, promotes sustainable economic development to have important social effect；Meanwhile, sorted in Mineral Processing Industry residual after oxide ore
Remaining aliphatic acid is removed, and is substantially reduced due to the remaining adverse effect to sorting index of floating agent in backwater, is improved back
Water use efficiency.
Graphene oxide used in the present invention is using cheap and rich reserves graphite as raw material, using maturation
Hummer methods prepare graphene oxide suspension, and under mild conditions, graphene oxide is entered using using aluminium polychloride
Row is modified, and can greatly improve the adsorption capacity of removing aliphatic acid, and solid-liquor separation is simple after adsorption reaction, has good industry should
Use prospect.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, and in order to allow the above and other objects, features and advantages of the present invention can
Become apparent, below in conjunction with preferred embodiment, describe in detail as follows.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will simply be situated between to the accompanying drawing of embodiment below
Continue.
Fig. 1 (a) is the 2D afm images of the atomic force microscopy diagram of the graphene oxide prepared；
Fig. 1 (b) is the corresponding altitude profile figure of the atomic force microscopy diagram of the graphene oxide prepared；
Fig. 2 is the kinetic curve of aluminium polychloride modified graphene oxide removing enuatrol at 25 DEG C；
Fig. 3 is influence of the pH value of solution to the adsorption capacity of aluminium polychloride modified graphene oxide；
Fig. 4 for various concentrations sodium oleate solution in, the adsorption capacity of aluminium polychloride modified graphene oxide；
Fig. 5 (a) is the outward appearance that unmodified graphene oxide has adsorbed solution after enuatrol；
Fig. 5 (b) is the outward appearance that aluminium polychloride modified graphene oxide has adsorbed solution after enuatrol.
Embodiment
The following detailed description of the present invention embodiment, its as part of this specification, by embodiment come
Illustrate the principle of the present invention, other aspects of the present invention, feature and its advantage will become apparent by the detailed description.
Case study on implementation 1：
Present case illustrates the preparation method of aluminium polychloride modified graphene oxide suspension.
1) 1.0g aphanitic graphites are weighed and prepare graphite oxide, the graphite oxide prepared first is subjected to pickling, then water
Wash, centrifuge is finally used again.
2) graphite oxide after centrifugation is dried 48 hours with vacuum freezing drying oven, dried graphite oxide is worn into
Powder.
3) the 0.2g graphene oxide powders weighed are dispersed in 300mL water with FLUKO high shear dispersions mixer.
4) graphite oxide solution is peeled off with Cole Parmer (750W, 20KHz) ultrasonic cell disruptor
9min, amplitude controlling is 30%.
5) suspension after stripping is centrifuged 20 minutes under 4000r/min rotating speeds, supernatant liquor is graphene oxide
Suspension, its concentration is 0.385g/L.
6) graphene oxide Thickness sensitivity, the atomic force microscopy figure of graphene oxide is as shown in Figure 1.Fig. 1 a are visible, big portion
Divide the solid colour of stannic oxide/graphene nano piece, illustrate that its thickness is approached；Fig. 1 b are visible, and the thickness of stannic oxide/graphene nano piece exists
1.1nm, in the thickness range of monolithic layer.It can be seen that, it has been successfully prepared few layer of graphene oxide.
7) graphene oxide suspension of the foregoing preparation of certain volume is taken, by volume 20:1 addition mass concentration is 1%
Polymeric aluminum chlorides solution, and suspension is placed in conical flask, on water bath chader by the pH value for controlling suspension 7 or so
Vibration is abundant, obtains aluminium polychloride modified graphene oxide suspension.Table 1 is before the aggregated aluminum chloride modified of graphene oxide
The zeta current potentials on surface afterwards, as shown in Table 1, aluminium polychloride successfully neutralizes the negative electrical charge of surface of graphene oxide, makes its surface
Zeta current potentials are shuffled, under conditions of neutral ph, and its zeta current potential changes into+10.8mV from -53.1mV, and this will make adsorbent and oil
The active force of sour sodium is changed into electrostatic attraction from electrostatic repulsion forces, so as to improve its adsorption effect to aliphatic acid.
Table 1 before modified rear oxidation graphene zeta current potentials with pH value change
Case study on implementation 2：
Present case illustrates the rate of adsorption of the aluminium polychloride modified graphene oxide adsorbent to enuatrol.
1) the oleic acid waste water for taking concentration to be 250mg/L, is used as the object of processing.
2) by the aluminium polychloride modified graphene oxide suspension (10mL) prepared in case 1 and 250mg/L oleic acid
Waste water (40mL) is mixed in conical flask.
3) conical flask is put on oscillator, at a temperature of 25 DEG C of adsorption reactions, vibrated under rotating speed 150rpm, adsorbing and removing
Time is respectively 0.25h, 1.5h, 3h, 5h, 9h, 11h, 21h and 24h.
4) conical flask for completing adsorption reaction takes out from oscillator, finally by the solution taking-up centrifuge of conical flask
15min is centrifuged under 12000r/min rotating speed, the separation of solid and liquid of absorption rear oxidation graphene is realized, the supernatant after centrifugation is taken out
Liquid, adjusts pH=7, and its absorbance is then surveyed with ultraviolet specrophotometer, determines residual concentration of the oleic acid in scavenging solution.
5) according to formula：The adsorbance of graphene oxide is calculated as follows：Calculate graphene oxide
Adsorbance.Wherein, qe(g·g-1) represent the equilibrium adsorption capacities of aluminium polychloride modified graphene oxide adsorbent, coAnd ce
(mg·L-1) residual concentration after the initial concentration and adsorption equilibrium of oleic acid is represented, V (L) represents suspension vol, and m (g) is represented
The quality of aluminium polychloride modified graphene oxide.Removing power of the aluminium polychloride modified graphene oxide to oleic acid at 25 DEG C
Learn as shown in Figure 2.
The case can illustrate that the speed of aluminium polychloride modified graphene oxide adsorbing and removing oleic acid is very fast, is connect during 9h
Nearly adsorption equilibrium, 20h is almost balanced.
Case study on implementation 3：
Present case illustrates influence of the solution ph to the adsorption capacity of aluminium polychloride modified graphene oxide adsorbent.
1) take the enuatrol waste water 40mL that concentration is 250mg/L to inject in 7 conical flasks respectively, be used as the object of processing.
2) by the graphene oxide suspension (10mL) prepared in case 1 and 250mg/L oleic acid waste water (40mL) in cone
Mixed in shape bottle.And it is respectively 4,5,6,7,8,9,10 to adjust the pH value of suspension in conical flask.
3) conical flask is put on oscillator, at a temperature of 25 DEG C of adsorption reactions, vibrated under rotating speed 150rpm, adsorbing and removing
Time is 24h.
4) conical flask for completing adsorption reaction takes out from oscillator, finally by the solution taking-up centrifuge of conical flask
15min is centrifuged under 12000r/min rotating speed, the separation of solid and liquid of absorption rear oxidation graphene is realized, the supernatant after centrifugation is taken out
Liquid, adjusts pH=7, and its absorbance is then surveyed with ultraviolet specrophotometer, determines residual concentration of the oleic acid in scavenging solution.
5) according to formula：The adsorbance of graphene oxide is calculated as follows：Calculate graphene oxide
Adsorbance.Wherein, qe(g·g-1) represent the equilibrium adsorption capacities of aluminium polychloride modified graphene oxide adsorbent, coAnd ce
(mg·L-1) residual concentration after the initial concentration and adsorption equilibrium of oleic acid is represented, V (L) represents suspension vol, and m (g) is represented
The quality of aluminium polychloride modified graphene oxide.Under different suspension pH value, aluminium polychloride modified graphene oxide is to oil
Sour sodium adsorption capacity is as shown in Figure 3.
The case can illustrate, when enuatrol initial concentration is 250mg/L, and adsorption reaction temperature is 25 DEG C, in neutrality
Under the conditions of (pH value is 7), aluminium polychloride modified graphene oxide can reach a higher point to the adsorption capacity of enuatrol, inhale
Attached capacity is up to 1.1g/g.
Case study on implementation 4：
Under the different oleic acid initial concentrations of present case elaboration, the adsorption capacity of aluminium polychloride modified graphene oxide adsorbent
Influence.
1) it is 0mg/L, 50mg/L, 100mg/L, 150mg/L, 200mg/L, 250mg/L, 300mg/L, 350mg/ to take concentration
L, 400mg/L enuatrol waste water 40mL, are respectively placed in conical flask, are used as the object of processing.
2) each 10mL of the graphene oxide suspension prepared in case 1 is taken, injection is equipped with various concentrations enuatrol waste water
(40mL) is mixed in conical flask.
3) conical flask is put on oscillator, at a temperature of 25 DEG C of adsorption reactions, vibrated under rotating speed 150rpm, adsorbing and removing
Time is 24h.
4) conical flask for completing adsorption reaction takes out from oscillator, finally by the solution taking-up centrifuge of conical flask
15min is centrifuged under 12000r/min rotating speed, the separation of solid and liquid of absorption rear oxidation graphene is realized, the supernatant after centrifugation is taken out
Liquid, adjusts pH=7, and its absorbance is then surveyed with ultraviolet specrophotometer, determines residual concentration of the oleic acid in scavenging solution.
5) according to formula：The adsorbance of graphene oxide is calculated as follows：Calculate graphene oxide
Adsorbance.Wherein, qe(g·g-1) represent the equilibrium adsorption capacities of aluminium polychloride modified graphene oxide adsorbent, coAnd ce
(mg·L-1) residual concentration after the initial concentration and adsorption equilibrium of oleic acid is represented, V (L) represents suspension vol, and m (g) is represented
The quality of aluminium polychloride modified graphene oxide.Under different concentrations of sodium oleate, aluminium polychloride modified graphene oxide is to oil
Sour sodium adsorption capacity is as shown in Figure 4.
The case can illustrate that aluminium polychloride modified graphene oxide is very high to the adsorption capacity of enuatrol.By Fig. 4
It can be seen that, when the initial concentration of enuatrol is 400mg/L, suction of the aluminium polychloride modified graphene oxide adsorbent to enuatrol
Attached capacity is up to 4372mg/g.
Aluminium polychloride modified graphene oxide and unmodified graphene oxide have been adsorbed after enuatrol, the outward appearance of its solution
Contrast is as shown in Figure 5., it is evident that there is thick floc sedimentation in modified graphene oxide suspension, this is very beneficial to sedimentation
Method or filtering..
Described above is the preferred embodiment of the present invention, can not limit the right model of the present invention with this certainly
Enclose, it is noted that for those skilled in the art, under the premise without departing from the principles of the invention, may be used also
To make some improvement and variation, these are improved and variation is also considered as protection scope of the present invention.
Claims (10)
1. a kind of aluminium polychloride modified graphene oxide adsorbent, it is characterised in that：Graphite oxide comprising 0.3-0.4g/L
Alkene suspension and mass concentration for 0.5-1.5% polymeric aluminum chlorides solution according to volume ratio 15-25:The mix suspending of 1 mixing
Liquid.
2. a kind of preparation method of aluminium polychloride modified graphene oxide adsorbent, it is characterised in that：Comprise the following steps：
Step 1: weighing aphanitic graphite prepares graphite oxide, graphite oxide is first then subjected to pickling, then washed, again finally
With centrifuge, centrifuged deposit thing is taken；
Step 2: the graphite oxide vacuum freeze drying after step one is centrifuged 24-60 hours, dried graphite oxide is ground
Into powder；
Step 3: graphene oxide powder obtained by step 2 is dispersed in into water, the graphene oxide powder and water according to
1-5g：3L ratio mixing；
Step 4: graphite oxide solution made from step 3 is carried out into ultrasound peels off 5-15min；
Step 5: the suspension centrifugation after step 4 is peeled off, supernatant liquor is graphene oxide suspension；
Step 6: take graphene oxide suspension made from step 5,15-25 by volume:1 adds mass concentration for 0.5-
2% polymeric aluminum chlorides solution, control ph had both obtained aluminium polychloride modified graphene oxide and inhaled in 6.5-7.5, water-bath vibration
Attached dose.
3. the preparation method of aluminium polychloride modified graphene oxide adsorbent as claimed in claim 2, it is characterised in that：
In step 3, the graphene oxide powder is with water according to 2g：3L ratio mixing.
4. the preparation method of aluminium polychloride modified graphene oxide adsorbent as claimed in claim 2, it is characterised in that：Step
In rapid six, graphene oxide suspension made from step 5 is taken, by volume 20:1 adds the polyaluminium that mass concentration is 1%
Aluminum solutions, control ph is 6-8.
5. the method for aliphatic acid in the aluminium polychloride modified graphene oxide adsorbent removing waste water described in claim 1, its
It is characterised by, comprises the following steps：
S1 prepares graphene oxide suspension using native graphite as raw material using Hummer methods；Add to graphene oxide suspension
Plus polymeric aluminum chlorides solution, stirring is mixed, aluminium polychloride modified graphene oxide suspension is obtained；
S2 takes the waste water of fatty acids, is used as the object of processing；
S3 mixes aluminium polychloride modified graphene oxide suspension and waste water, and adjusts pH value；
S4 vibrates mixed liquor obtained by S3, adsorbing and removing；
S5 filters the graphene oxide suspension that aliphatic acid has been adsorbed obtained by S4.
6. the method for aliphatic acid in aluminium polychloride modified graphene oxide adsorbent removing waste water as claimed in claim 5,
It is characterized in that：Aluminium polychloride described in the S1, can for white, yellow, yellowish-brown these three colors aluminium polychloride；
Aluminium dioxide content 27wt%-30wt% in aluminium polychloride；Its basicity B is 30%-95%.
7. the method for aliphatic acid in aluminium polychloride modified graphene oxide adsorbent removing waste water as claimed in claim 5,
It is characterized in that：The addition of polymeric aluminum chlorides solution described in S1, by solid product in mass ratio 1：3 are dissolved in water as liquid
Afterwards, then add 30 mass multiples clear water be diluted to needed for be added to graphene oxide suspension after concentration, and ensure polyaluminium
The mass ratio of aluminium and graphene oxide is 1~5:1.
8. the method for aliphatic acid in aluminium polychloride modified graphene oxide adsorbent removing waste water as claimed in claim 5,
It is characterized in that：In fatty amine waste water described in S2, the concentration of aliphatic acid is 10~5000mg/L.
9. the method for aliphatic acid in aluminium polychloride modified graphene oxide adsorbent removing waste water as claimed in claim 5,
It is characterized in that：Aluminium polychloride modified graphene oxide suspension described in S3 is mixed with waste water, its suitable adsorption reaction
PH value is 6~8.
10. the method for aliphatic acid in aluminium polychloride modified graphene oxide adsorbent removing waste water as claimed in claim 5,
It is characterized in that：Adsorption reaction condition described in S4 is, 5 DEG C~50 DEG C of adsorption temp, oscillator rotating speed 50r/min~300r/
Min, adsorbing and removing time 1h~30h.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111978944A (en) * | 2020-08-10 | 2020-11-24 | 宁波锋成先进能源材料研究院 | Application of modified nano graphene oxide as chemical agent for improving recovery ratio of low-permeability reservoir |
| CN114620789A (en) * | 2022-03-28 | 2022-06-14 | 衡阳市建衡实业有限公司 | Modified graphene/polyaluminum chloride water purifying agent and preparation method thereof |
| CN115228436A (en) * | 2022-08-11 | 2022-10-25 | 重庆科技学院 | Preparation method and application of metal-doped graphene adsorbent |
| CN115364812A (en) * | 2022-09-23 | 2022-11-22 | 江苏建霖环保科技有限公司 | Industrial water purifying agent for coal coking wastewater treatment |
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| CN111978944A (en) * | 2020-08-10 | 2020-11-24 | 宁波锋成先进能源材料研究院 | Application of modified nano graphene oxide as chemical agent for improving recovery ratio of low-permeability reservoir |
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| CN114620789A (en) * | 2022-03-28 | 2022-06-14 | 衡阳市建衡实业有限公司 | Modified graphene/polyaluminum chloride water purifying agent and preparation method thereof |
| CN115228436A (en) * | 2022-08-11 | 2022-10-25 | 重庆科技学院 | Preparation method and application of metal-doped graphene adsorbent |
| CN115228436B (en) * | 2022-08-11 | 2023-12-15 | 重庆科技学院 | Preparation method and application of metal-doped graphene adsorbent |
| CN115364812A (en) * | 2022-09-23 | 2022-11-22 | 江苏建霖环保科技有限公司 | Industrial water purifying agent for coal coking wastewater treatment |
| CN115364812B (en) * | 2022-09-23 | 2023-09-22 | 江苏建霖环保科技有限公司 | Industrial water purifying agent for coal coking wastewater treatment |
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