CN104959110A - Surface-modified adsorbent and its preparation method and use - Google Patents
Surface-modified adsorbent and its preparation method and use Download PDFInfo
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- CN104959110A CN104959110A CN201510290416.6A CN201510290416A CN104959110A CN 104959110 A CN104959110 A CN 104959110A CN 201510290416 A CN201510290416 A CN 201510290416A CN 104959110 A CN104959110 A CN 104959110A
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Abstract
The invention discloses a preparation method of a surface-modified adsorbent. The preparation method comprises 1, pretreating active carbon, 2, adding the active carbon pretreated by the step 1 into a potassium permanganate solution, and heating the potassium permanganate solution until reflux, and 3, filtering the mixed solution obtained by the step 2, and cleaning and drying the filter residue so that the surface-modified adsorbent is obtained. The invention also discloses the surface-modified adsorbent and a use thereof. A manganese compound in the potassium permanganate solution is adhered to the surface of active carbon so that active carbon adsorption effects are improved, zeta potential of the surface of active carbon is changed so that active carbon polarity is improved, and effects of removing antimony and especially removing trivalent antimony in the solution are improved. The preparation method is simple and is convenient for use.
Description
Technical field
The present invention relates to sewage purification technology, particularly a kind of surface modified sorbent and its preparation method and application.
Background technology
Antimony is a kind of toxic element of extensive distribution, is mainly present in natural antimony-containing mineral, as stibnite (Sb
2s
3), antimony bloom ore deposit (Sb
2o
3).Because its heat-conductivity conducting performance is not high, be widely used in the industrial circles such as semiconducting alloy, battery, lubricant, ammunition, cable sheathing, glass, welding alloy.Percolate containing " three wastes " that discharge in the exploitation of the discharge of antimony industrial wastewater, antimony ore, smelting process, refuse landfill and the water erosion containing antimony rock and weathering are the major reasons causing water body antimony pollution.
Antimony (Sb) is not the required element of organism, sulfydryl (-SH) in Sb and protein has very strong affinity, some sulfydryl enzyme can be suppressed as the activity of succinic oxidase, the metabolism of interfering bodies internal protein and sugar, infringement liver, heart and nervous system, also produce spread effect to mucous membrane.Based on the toxicity of antimony, antimony is all classified as priority pollutants by European Union and Environmental Protection Agency, and the Japanese environmental sanitation Room is also classified as close attention pollutant.Many countries have all formulated strict environmental standard to the concentration of antimony in the world, and as the maximum acceptable concentration of antimony in drinking water is decided to be 5 μ g/L by European Union, the most high target value that Environmental Protection Agency formulates is 6 μ g/L, and Japan is then 2 μ g/L.Also the limiting concentration of antimony is decided to be 5 μ g/L in China " standards for drinking water quality (GB5749-2006) ".
China's antimony ore reserves and output all occupy first place, the world, but the backwardness of production technique causes the day by day serious of antimony pollution.The people such as He Mengchang (Sci Total Environ, 1999,243 ~ 244,149 ~ 155) once the soil of investigation around " world's antimony all " Hunan Province's tinneries, water body and vegetation all receive pollution, and in river and well water, antimony concentration is respectively 0.037 ~ 0.063mg/L and 24.02 ~ 42.03mg/L.Antimony pollution constitutes serious threat to aquatic ecosystem, drinking water safety, Crop securify and human health.The valence state of antimony at occurring in nature mainly with Sb
3+, Sb
5+and Sb
3-form exist, wherein the hydride of negative trivalent is unstable at occurring in nature, oxidizablely resolves into metal and water, Sb
3+, Sb
5+compound is more stable, and because the toxicity of antimony is relevant with valence state, how antimonious toxicity ratio quinquevalence antimony high ten times, so process at nature stable existence and the larger trivalent antimony of toxicity is one of problem in the urgent need to address.
In current removal water body, the method for antimony mainly contains oxidation-reduction method, coagulant sedimentation, solution extraction, ion-exchange and absorption method, and wherein absorption method is one of the most cost-effective method.But current experiment is all show some absorption properties under the condition that concentration is higher, and some not only preparation process is complicated, difficult operation in Practical Project, more consume higher economically.
Because active carbon has good absorption property, and be widely used in the last few years removing the pollutant in water body, and therefore considered to carry out the research except antimony method on this basis.We know that active carbon is only for the apolar substance in adsorbed water body under normal circumstances, when for polar substances in adsorbed water body, then need to carry out some modifications to active carbon, enhanced activity charcoal to the adsorption capacity of polar substances, but does not also remove the research of antimonious Adsorbent modification in solution at present.
Summary of the invention
The invention provides a kind of preparation method of surface modified sorbent, preparation technology is simple, the advantages of good adsorption effect of the surface modified sorbent prepared and non-secondary pollution.
A preparation method for surface modified sorbent, comprises the following steps:
(1) active carbon is carried out pretreatment;
(2) added in liquor potassic permanganate by pretreated active carbon and form mixed liquor, ebuillition of heated is to backflow;
(3) cooling mixed liquid, filter, filter residue is through cleaning, obtain surface modified sorbent after drying.
Active carbon is dropped into the method extremely refluxed in liquor potassic permanganate and by liquor potassic permanganate ebuillition of heated by the present invention, in reflux course, a large amount of manganese compound in liquor potassic permanganate is attached to the surface of active carbon, and the zeta current potential of activated carbon surface is changed the polarity of enhanced activity charcoal, improve the antimony in solution, especially antimonious removal effect.
In order to improve adhesion effect and efficiency, preferably, in step (2), ebuillition of heated also keeps 0.5h ~ 1.5h at reflux.
Reflux under remaining on fluidized state, liquor potassic permanganate can be remained on state of temperature higher on the one hand, fluidized state also has the effect of stirring to active carbon on the other hand.Preferred further, use digital display intelligent temperature control magnetic stirring apparatus to add liquor potassic permanganate described in thermal agitation.In order to raise the efficiency, further preferably, reflux 1h.More than 1h, adsorption effect improves not obvious.
In order to further adsorption effect of the present invention, preferably, the specific area of described active carbon is 900.00m
2/ more than g, the concentration of liquor potassic permanganate is not less than 0.01molL
-1, the quality of described active carbon and liquor potassic permanganate and volume ratio are 0.05 ~ 0.15g/ml.
Specific area is larger, can adhere to more manganese compound under equal quality, and improve adsorption effect, further preferably, the specific area of described active carbon is 900.00 ~ 1200.00m
2/ g, further preferably, the specific area of described active carbon is 940.00m
2/ g.Preferably, the specific area chosen is 940.00m
2the pore volume of the active carbon of/g is 0.24cm
3/ g, aperture is 2.83nm.
Generally, the concentration of liquor potassic permanganate is larger, then adhesion amount is larger, and the adsorption effect of the surface modified sorbent of preparation is better;
Preferably, before heating, the concentration of liquor potassic permanganate is at least 0.05molL
-1but after attachment is saturated, excessive concentration can cause waste, therefore, further preferably, before heating, the concentration of liquor potassic permanganate is 0.05 ~ 0.15molL
-1, further preferably, before heating, the concentration of liquor potassic permanganate is 0.05mol molL
-1.The surface modified sorbent now prepared takes into account raising and the economy of adsorption effect.
In order to improve adhesion effect, further preferably, before heating, the concentration of liquor potassic permanganate is 0.08 ~ 0.12mol molL
-1, further preferably, before heating, the concentration of liquor potassic permanganate is 0.10mol molL
-1.The surface modified sorbent adsorption effect now prepared is best.
The quality of described active carbon and liquor potassic permanganate and volume ratio adjust according to the change of the specific area of described active carbon and the concentration of liquor potassic permanganate, and preferably, the specific area of described active carbon is 940.00m
2/ g, before heating, the concentration of liquor potassic permanganate is 0.10mol molL
-1, the quality of described active carbon and liquor potassic permanganate and volume ratio are 0.08 ~ 0.12g/ml, and further preferably, the quality of described active carbon and liquor potassic permanganate and volume ratio are 0.10g/ml.
In order to avoid affecting pH value of solution to be removed when the present invention uses, preferably, in step (3), during filter residue cleaning, the pH value of cleaning to cleaning fluid is 6.5 ~ 7.
In order to the surface making manganese compound more easily be attached to active carbon, reduce the interference of impurity, preferably, in step (1), pretreated concrete steps are simultaneously:
1-1, being 0.2 ~ 0.4g/ml with quality and volume ratio, active carbon is soaked 5h ~ 12h by ratio in ethanol, is dried by active carbon after filtration; Preferred further, the volumetric concentration of described ethanol is 95%, and further preferably, described quality and volume ratio are 0.3g/ml, soaks 5h, dries in 120 DEG C of air dry ovens.
1-2, by drying the active carbon that obtains, to drop into volume ratio in the ratio that quality and volume ratio are 0.1 ~ 0.2g/ml be soak more than 10h in the HCl solution of 8% ~ 12%, and filtration afterwards cleaning active charcoal to the pH value of cleaning fluid is 6.5 ~ 7 post-dryings.
Further preferred, select volume ratio be 10% HCl solution, described quality and volume ratio are 0.15g/ml, immersion 5 ~ 12h; Active carbon is repeatedly rinsed with ultra-pure water limpid and for neutral to supernatant, dry 12h at 120 DEG C after filtration.The effect of HCl solution is the acidification in early stage to active carbon, for opening the surface pore of active carbon.
Present invention also offers a kind of surface modified sorbent, to the trivalent antimony in solution, there is good adsorption effect, and preparation method is simple, easy to use.
A kind of surface modified sorbent, is obtained by the preparation method of above-mentioned surface modified sorbent.
The invention also discloses a kind of application of surface modified sorbent, the trivalent antimony in effective adsorbent solution, easy to use.
An application for surface modified sorbent, gets above-mentioned surface modified sorbent and drops into containing in antimonious solution.
The pH value difference of solution will affect surface modified sorbent removal effect of the present invention, and preferably, the described pH value containing antimonious solution is 2.0 ~ 4.0.The present invention is applicable to antimonious removal in the lower industrial wastewater water body of pH value.In above-mentioned pH value range, surface modified sorbent of the present invention has good removal effect to trivalent antimony, and further preferably, the described pH value containing antimonious solution is 2.9 ~ 3.1, preferred further, the described pH value containing antimonious solution is 3.0.
Removal effect of the present invention is also relevant with injected volume, preferably, the dosage of described surface modified sorbent is g/L, antimonious solution concentration is mg/L, and the ratio of the numerical value of the dosage of described surface modified sorbent and antimonious solution concentration (hereinafter referred to as dosage and antimony concentration) is not less than 0.5.Excessive injected volume can cause waste, and further preferably, dosage is 0.5 ~ 3.0 with the ratio of the numerical value of antimony concentration.
Surface modified sorbent prepared by the liquor potassic permanganate of variable concentrations shows not identical in removal efficiency.
When before heating, the concentration of liquor potassic permanganate is 0.10mol molL
-1time, dosage is 0.66 ~ 1.33 with the ratio of the numerical value of antimony concentration, and now antimonious clearance can reach more than 95%.Preferred further, dosage is 1.33 with the ratio of the numerical value of antimony concentration.Now antimonious clearance can reach 100%.
When before heating, the concentration of liquor potassic permanganate is 0.05mol molL
-1when, dosage is 0.66 ~ 1.0 with the ratio of the numerical value of antimony concentration, and now antimonious clearance reaches more than 85%, and further preferably, dosage is 1.0 with the ratio of the numerical value of antimony concentration.Now antimonious clearance reaches more than 95%, and continuation increase raising effect is also not obvious.
Removal effect of the present invention also and reaction temperature, the processing time and processing method relevant, preferably, at the temperature of 18 ~ 35 DEG C, will the antimonious solution of surface modified sorbent be added to be greater than the velocity fluctuation at least 2h of 150r/min.Preferred further, vibrate at least 4h, in order to take into account efficiency and effect, further preferably, and vibration 12 ~ 24h, further preferably, vibration 24h.Now adsorption effect is best, and more than 24h, adsorption effect change is not obvious.
Preferred further, at the temperature of 25 DEG C, will the velocity fluctuation 24h of antimonious solution with 200r/min of surface modified sorbent be added.
Beneficial effect of the present invention:
The present invention is by being attached to the surface of active carbon by the manganese compound in liquor potassic permanganate, improve the adsorption effect of active carbon, and the zeta current potential of activated carbon surface is changed the polarity of enhanced activity charcoal, improve the antimony in solution, especially antimonious removal effect, preparation method is simple, easy to use.
Accompanying drawing explanation
Fig. 1 is the electron microscope picture of the active carbon (comparative example) that the present invention adopts.
Fig. 2 is the electron microscope picture of surface modified sorbent prepared by embodiment 1.
Fig. 3 is the electron microscope picture of surface modified sorbent prepared by embodiment 2.
Fig. 4 is the electron microscope picture of surface modified sorbent prepared by embodiment 3.
The surface modified sorbent that Fig. 5 is comparative example and embodiment 1, prepared by embodiment 2, embodiment 3 is to the adsorption effect comparison diagram of trivalent antimony ion in water body.
Fig. 6 is surface modified sorbent adsorption effect comparison diagram at various ph values prepared by comparative example and embodiment 1, embodiment 2, embodiment 3.
Fig. 7 is the change curve schematic diagram of surface modified sorbent surface zeta potential potential value at various ph values prepared by comparative example and embodiment 1, embodiment 2, embodiment 3.
The adsorption effect comparison diagram of Fig. 8 when to be comparative example different with surface modified sorbent dosage prepared by embodiment 1, embodiment 2, embodiment 3.
Detailed description of the invention
Embodiment 1
(numbering: AC), removes the impurity of AC to the active carbon that the present embodiment adopts, and adopt the microscopic pattern of Hitachi S-4800 type field emission scanning electron microscope shooting AC, multiplication factor is 5000, and result as shown in Figure 1.
Specific area and laser particle size analysis are carried out to AC, obtains result as follows: the specific area of AC is 940.00m
2/ g, pore volume is 0.24cm
3/ g, aperture is 2.83nm.
The preparation method of the surface modified sorbent of the present embodiment, step comprises:
After AC is first soaked 5h with the pure solution of the ethanol analysis of volume ratio 95%, filter and dry;
AC after drying is soaked the oven dry of 12h afterwash with the HCl solution of volume ratio 10% again;
With the KMnO of 0.01mol/L
4solution, drop in there-necked flask in the ratio of AC 3g, liquor potassic permanganate 30ml, be placed on digital display intelligent temperature control magnetic stirring apparatus and be heated to boiling, and under fluidized state condensing reflux 1h, to be cooled to room temperature, repeatedly rinse to supernatant is limpid and pH value is 6.5 ~ 7 with ultra-pure water after filtration, in the baking oven of 120 DEG C, dry 12h.Be cooled to room temperature, obtain surface modified sorbent (numbering: MAC-0.01), seal for subsequent use.
Adopt the microscopic pattern of Hitachi S-4800 type field emission scanning electron microscope shooting MAC-0.01, multiplication factor is 5000, and result as shown in Figure 2.
Specific area and laser particle size analysis are carried out to MAC-0.01, obtains result as follows: the specific area of MAC-0.01 is 936.04m
2/ g, pore volume is 0.21cm
3/ g, aperture is 2.94nm.
Surface modified sorbent that the present embodiment obtains (numbering: application process MAC-0.01) is as follows:
With compound potassium antimony tartrate (C
4h
2kO
6sb1.5H
2o) the original solution 900ml that antimony concentration (antimonious concentration) is 1.5mg/L is mixed with, the pH value of original solution is regulated to be 3.0 with the HCl of concentration to be the NaOH of 0.1mol/L and concentration be 0.1mol/L, pour each 100ml in the erlenmeyer flask of 9 250ml respectively into, then MAC-0.01 embodiment 1 prepared is that 1.5g/L joins in the aqueous solution of potassium antimony tartrate according to dosage, be with the velocity fluctuation of 200r/min in the constant-temperature table of 25 DEG C in environment temperature, respectively at collected specimens 4ml when 0,0.5,1,2,4,6,9,12,14 and 24h.
Adopt the cellulose acetate film elimination adsorbent of 0.45 μm, utilize the antimonious concentration that flame atomic absorption spectrophotometer detection is not gone with wine in the aqueous solution of stone acid antimony potassium in the same time, show that adsorbent is to antimonious adsorption effect, i.e. clearance (R/ (%)), as shown in Figure 5, when to 24h, clearance is 82.64%.
In order to study the impact of pH value on adsorption reaction, carry out following operation:
With compound potassium antimony tartrate (C
4h
2kO
6sb1.5H
2o) be mixed with the aqueous solution 600ml that antimony concentration is 1.5mg/L, pour each 100ml in the erlenmeyer flask of 6 250ml respectively into, regulate the pH value of solution to be respectively 2.0,3.0,5.0,7.0,8.8 and 10.0 with the HCl of NaOH and 0.1mol/L of 0.1mol/L;
Then the MAC-0.01 prepared by the present embodiment joins in the aqueous solution of potassium antimony tartrate according to dosage 1.5g/L, be with the velocity fluctuation 24h of 200r/min in environment temperature in the constant-temperature table of 25 DEG C, under obtaining different pH value, adsorbent is to antimonious adsorption effect, namely the impact of clearance (R/ (%)), as shown in Figure 6, can find out, when pH is 3, removal effect is best.
Get MAC-0.01, be divided into 6 parts, wear into 71 μm Powdered with mortar, every part takes 0.045g in 50ml tool plug plastic centrifuge tube.In plastic centrifuge tube, the volume of antimony solution is 30ml, Sb (III), namely antimonious initial mass concentration is 1.5mg/L, the pH value containing antimony original solution is regulated to be respectively 2.0,3.0,5.0,7.0 and 10.0 with the NaOH solution of 0.1mol/L and the HCl solution of 0.1mol/L, sample laser particle analyzer is measured the zeta potential value of adsorbent surface, if Fig. 7 is zeta (zp) the potential value curve on MAC-0.01 surface under different pH condition.
In order to test the impact of injected volume on adsorption reaction of MAC-0.01, carry out following operation:
The adsorbent MAC-0.01 of preparation in Example 1, be divided into 4 parts, every part is respectively 0.05g, 0.1g, 0.15g and 0.20g in 300ml tool plug conical flask, the original solution 400ml that initial antimony concentration is 1.5mg/L is prepared with potassium antimony tartrate, pour each 100ml in conical flask respectively into, being 3.0 by the pH value of NaOH and the HCl solution condition original solution of 0.1mol/L, is to sample after the velocity fluctuation 24h of 200r/min in environment temperature in the constant-temperature table of 298K.Institute's sample thief cellulose acetate film elimination adsorbent of 0.45 μm, Adsorption effect to antimony in water when utilizing flame atomic absorption spectrophotometer to detect different adsorbent dosage, as shown in Figure 8, can find out the increase with dosage, when dosage is 1.0g/L to 1.5g/L, removal effect has one significantly to jump.
Embodiment 2
The active carbon that the present embodiment adopts is identical with embodiment 1, is all AC.
The preparation method of the surface modified sorbent of the present embodiment, except the concentration difference of the potassium permanganate of use, all the other operations are all identical with embodiment 1, use the KMnO of 0.05mol/L in the present embodiment
4solution, prepares surface modified sorbent (numbering: MAC-0.05), seal for subsequent use.
Adopt the microscopic pattern of Hitachi S-4800 type field emission scanning electron microscope shooting MAC-0.05, multiplication factor is 5000, and result as shown in Figure 3.
Specific area and laser particle size analysis are carried out to MAC-0.05, obtains result as follows: the specific area of MAC-0.05 is 935.22m
2/ g, pore volume is 0.20cm
3/ g, aperture is 2.96nm.
Surface modified sorbent (the numbering: application process MAC-0.05) is identical with embodiment 1 that the present embodiment obtains.To antimonious adsorption effect as shown in Figure 5, when to 24h, absorption reaches balance to adsorbent, and clearance is 96.54%.
In order to study the impact of pH value on adsorption reaction, carry out following operation:
Operating condition is with embodiment 1, and pH value on the impact of adsorption reaction as shown in Figure 6.The zeta potential value (zp) of adsorbent surface with solution ph change curve as shown in Figure 7.
In order to test the impact of injected volume on adsorption reaction of MAC-0.05, carry out following operation:
Operating condition is identical with embodiment 1, can find out that the removal effect of MAC-0.05 is all better than AC within the scope of the dosage of whole experiment as shown in Figure 8, when dosage is greater than 1.0g/L, clearance is greater than 90%, but after dosage reaches 1.5g/L clearance without significant change.
Embodiment 3
The active carbon that the present embodiment adopts is identical with embodiment 1, is all AC.
The preparation method of the surface modified sorbent of the present embodiment, except the concentration difference of the potassium permanganate of use, all the other operations are all identical with embodiment 1, use the KMnO of 0.10mol/L in the present embodiment
4solution, prepares surface modified sorbent (numbering: MAC-0.1), seal for subsequent use.
Adopt the microscopic pattern of Hitachi S-4800 type field emission scanning electron microscope shooting MAC-0.1, multiplication factor is 5000, and result as shown in Figure 4.
Specific area and laser particle size analysis are carried out to MAC-0.1, obtains result as follows: the specific area of MAC-0.1 is 920.52m
2/ g, pore volume is 0.20cm
3/ g, aperture is 2.95nm.
Surface modified sorbent (the numbering: application process MAC-0.10) is identical with embodiment 1 that the present embodiment obtains.To antimonious adsorption effect as shown in Figure 5, when to 24h, absorption reaches balance to adsorbent, and clearance is 100%.
In order to study the impact of pH value on adsorption reaction, carry out following operation:
Operating condition is with embodiment 1, and pH value on the impact of adsorption reaction as shown in Figure 6.The zeta potential value (zp) of adsorbent surface with solution ph change curve as shown in Figure 7.
In order to test the impact of injected volume on adsorption reaction of MAC-0.1, carry out following operation:
Operating condition is identical with embodiment 1, can find out that the removal effect of MAC-0.1 is all better than AC within the scope of the dosage of whole experiment as shown in Figure 8, when dosage is 0.5 ~ 1g/L, clearance has a significantly change, when dosage is 2.0g/L, clearance can reach 100%.
Comparative example
The adsorbent of this comparative example adopts AC, adopts the method identical with embodiment 1 to apply this comparative example, and to antimonious adsorption effect as shown in Figure 5, when to 24h, absorption reaches balance to adsorbent, and clearance is 88.83%.
In order to study the impact of pH value on adsorption reaction, carry out following operation:
Operating condition is with embodiment 1, and pH value on the impact of adsorption reaction as shown in Figure 6.The zeta potential value (zp) of adsorbent surface with solution ph change curve as shown in Figure 7.
In order to test the impact of injected volume on adsorption reaction of AC, carry out following operation:
Operating condition is identical with embodiment 1, and result as shown in Figure 8.
In sum, by the comparison of comparative example and each embodiment, can draw, the surface modified sorbent of each embodiment in the present invention effectively improves antimonious removal effect, wherein, the adsorption effect of embodiment 3 is best, and under specific pH value, injected volume and reaction time, clearance reaches 100%, can take into account removal effect and economy by controlling injected volume.
Claims (10)
1. a preparation method for surface modified sorbent, is characterized in that, comprises the following steps:
(1) active carbon is carried out pretreatment;
(2) added in liquor potassic permanganate by pretreated active carbon and form mixed liquor, ebuillition of heated is to backflow;
(3) cooling mixed liquid, filter, filter residue is through cleaning, obtain surface modified sorbent after drying.
2. the preparation method of surface modified sorbent as claimed in claim 1, is characterized in that, in step (2), ebuillition of heated also keeps 0.5 ~ 1.5h at reflux.
3. the preparation method of surface modified sorbent as claimed in claim 1 or 2, it is characterized in that, the specific area of described active carbon is 900m
2/ more than g, the concentration of liquor potassic permanganate is not less than 0.01molL
-1, the quality of described active carbon and liquor potassic permanganate and volume ratio are 0.05 ~ 0.15g/ml.
4. the preparation method of surface modified sorbent as claimed in claim 1 or 2, is characterized in that, in step (3), during filter residue cleaning, the pH value of cleaning to cleaning fluid is 6.5 ~ 7.
5. the preparation method of surface modified sorbent as claimed in claim 1 or 2, it is characterized in that, in step (1), pretreated concrete steps are:
1-1, being 0.2 ~ 0.4g/ml with quality and volume ratio, active carbon is soaked 5h ~ 12h by ratio in ethanol, is dried by active carbon after filtration;
1-2, drops into as volume ratio is soak more than 10h in the HCl solution of 8% ~ 12% by drying the active carbon that obtains in the ratio that quality and volume ratio are 0.1 ~ 0.2g/ml, filtration afterwards cleaning active charcoal to the pH value of cleaning fluid is 6.5 ~ 7 post-dryings.
6. a surface modified sorbent, is characterized in that, is obtained by the preparation method of the surface modified sorbent as described in claim as arbitrary in Claims 1 to 5.
7. an application for surface modified sorbent, is characterized in that, the surface modified sorbent got described in claim 6 drops into containing in antimonious solution.
8. the application of surface modified sorbent as claimed in claim 7, is characterized in that, the described pH value containing antimonious solution is 2.0 ~ 4.0.
9. the application of surface modified sorbent as claimed in claim 7 or 8, it is characterized in that, the dosage of described surface modified sorbent is g/L, and antimonious solution concentration is mg/L, and the dosage of described surface modified sorbent is not less than 0.5 with the ratio of the numerical value of antimonious solution concentration.
10. the application of surface modified sorbent as claimed in claim 7 or 8, is characterized in that, at the temperature of 18 ~ 35 DEG C, will add the antimonious solution of surface modified sorbent to be greater than the velocity fluctuation at least 2h of 150r/min.
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| CN105771889A (en) * | 2016-03-23 | 2016-07-20 | 中国地质调查局西安地质调查中心 | Preparation method and application of modified activated carbon |
| CN110194455A (en) * | 2019-06-27 | 2019-09-03 | 哈尔滨工业大学（深圳） | A kind of preparation method of the modified activated carbon for sewage plant bad smell processing |
| CN112058232A (en) * | 2020-09-21 | 2020-12-11 | 河南大学 | Manganese dioxide modified activated carbon composite adsorbent, preparation method thereof and application thereof in arsenic removal |
| CN113880288A (en) * | 2020-07-02 | 2022-01-04 | 浙江洁呈新材料科技股份有限公司 | Activated carbon adsorption treatment process for non-woven fabric printing and dyeing wastewater |
| CN114394641A (en) * | 2022-01-25 | 2022-04-26 | 江西农业大学 | Method for adsorbing nitrosodiethylamine in water based on modified activated carbon |
| WO2023071355A1 (en) * | 2021-10-26 | 2023-05-04 | 广东邦普循环科技有限公司 | Wastewater adsorbent, and preparation method therefor and use thereof |
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| 王晓卉: "改性颗粒活性炭对水中Sb（Ⅲ）的吸附去除试验研究", 《万方数据学位论文》 * |
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| CN110194455A (en) * | 2019-06-27 | 2019-09-03 | 哈尔滨工业大学（深圳） | A kind of preparation method of the modified activated carbon for sewage plant bad smell processing |
| CN113880288A (en) * | 2020-07-02 | 2022-01-04 | 浙江洁呈新材料科技股份有限公司 | Activated carbon adsorption treatment process for non-woven fabric printing and dyeing wastewater |
| CN112058232A (en) * | 2020-09-21 | 2020-12-11 | 河南大学 | Manganese dioxide modified activated carbon composite adsorbent, preparation method thereof and application thereof in arsenic removal |
| WO2023071355A1 (en) * | 2021-10-26 | 2023-05-04 | 广东邦普循环科技有限公司 | Wastewater adsorbent, and preparation method therefor and use thereof |
| GB2622157A (en) * | 2021-10-26 | 2024-03-06 | Guangdong Brunp Recycling Technology Co Ltd | Wastewater adsorbent, and preparation method therefor and use thereof |
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