CN103721715B - A kind of load type active carbon zero-valent iron material - Google Patents
A kind of load type active carbon zero-valent iron material Download PDFInfo
- Publication number
- CN103721715B CN103721715B CN201310615041.7A CN201310615041A CN103721715B CN 103721715 B CN103721715 B CN 103721715B CN 201310615041 A CN201310615041 A CN 201310615041A CN 103721715 B CN103721715 B CN 103721715B
- Authority
- CN
- China
- Prior art keywords
- active carbon
- iron
- zero
- load type
- type active
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 119
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 52
- 239000000463 material Substances 0.000 title claims abstract description 24
- 229910052742 iron Inorganic materials 0.000 claims abstract description 42
- 239000002245 particle Substances 0.000 claims abstract description 17
- 230000015556 catabolic process Effects 0.000 claims abstract description 9
- 238000006731 degradation reaction Methods 0.000 claims abstract description 9
- 230000003197 catalytic effect Effects 0.000 claims abstract description 7
- 229910010272 inorganic material Inorganic materials 0.000 claims abstract description 4
- 239000011147 inorganic material Substances 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 238000010521 absorption reaction Methods 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 239000008367 deionised water Substances 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000003610 charcoal Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 238000005119 centrifugation Methods 0.000 claims description 5
- SURQXAFEQWPFPV-UHFFFAOYSA-L iron(2+) sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Fe+2].[O-]S([O-])(=O)=O SURQXAFEQWPFPV-UHFFFAOYSA-L 0.000 claims description 5
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 5
- 230000002101 lytic effect Effects 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- 239000007791 liquid phase Substances 0.000 claims description 4
- STZCRXQWRGQSJD-GEEYTBSJSA-M methyl orange Chemical compound [Na+].C1=CC(N(C)C)=CC=C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-GEEYTBSJSA-M 0.000 claims description 4
- 229940012189 methyl orange Drugs 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 3
- 238000006722 reduction reaction Methods 0.000 abstract description 10
- 239000003344 environmental pollutant Substances 0.000 abstract description 8
- 231100000719 pollutant Toxicity 0.000 abstract description 8
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract description 4
- 239000000243 solution Substances 0.000 description 22
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 18
- 238000000034 method Methods 0.000 description 16
- 238000002156 mixing Methods 0.000 description 8
- 239000012153 distilled water Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000002351 wastewater Substances 0.000 description 6
- -1 Potassium ferricyanide Chemical compound 0.000 description 4
- 239000007853 buffer solution Substances 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000002835 absorbance Methods 0.000 description 3
- 238000007865 diluting Methods 0.000 description 3
- 239000000975 dye Substances 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- 239000002156 adsorbate Substances 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- 238000011088 calibration curve Methods 0.000 description 2
- 230000002612 cardiopulmonary effect Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000002779 inactivation Effects 0.000 description 2
- 238000000053 physical method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000005067 remediation Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 1
- 206010061218 Inflammation Diseases 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- HAYXDMNJJFVXCI-UHFFFAOYSA-N arsenic(5+) Chemical compound [As+5] HAYXDMNJJFVXCI-UHFFFAOYSA-N 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 230000004054 inflammatory process Effects 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 244000000010 microbial pathogen Species 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 238000001728 nano-filtration Methods 0.000 description 1
- 239000002114 nanocomposite Substances 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 231100000004 severe toxicity Toxicity 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Landscapes
- Water Treatment By Sorption (AREA)
Abstract
The present invention relates to a kind of load type active carbon zero-valent iron material, it is characterized in that carrier is granular active carbon, the particle diameter of active carbon is between 0.2 ~ 0.45mm, more than the specific area 1500m2 of active carbon, immobilized inorganic material is nano zero valence iron particle, the iron of load is the Fe of zero-valent state, and the nano zero valence iron particle of load is of a size of 1 ~ 100nm, and the content of Fe is at 200-2000mg/g.Not only there is the excellent suction-operated of active carbon and the strong reduction of Nanoscale Iron simultaneously, and Supported Nano Zero-valent Iron take iron as anode, C is negative electrode composition galvanic cell, to reduction reaction, there is facilitation, very big effect is had to the catalytic degradation of pollutant, for the deep purifying of environment micropollutants (as heavy metal ion, large molecular dye and halogenated organic matters etc.) and security control provide better technical support.
Description
Technical field
The present invention relates to a kind of nano composite active charcoal for catalytic degradation environment micropollutants, is the preparation method and application of load type active carbon zero-valent iron material in particular.
Background technology
In modern society, major pollutants in drinking water have the heavy metal ion of solubility, arsenic ion, micro-content organism pollutant, DBPs, nitrate, nitrite and pathogen, virus and pathogenic microorganism etc., and the water-purifying material be widely adopted at present mainly contains active carbon, molecular sieve, KDF and nanofiltration membrane etc.
Absorption method is one of effective ways removing pollutant in polluted-water.Absorption is by the intermolecular Van der Waals force of adsorbate and adsorbent, electrostatic force, the effect such as hydrogen bond and chemical bond, adsorbate is adsorbed onto the physical chemical phenomenon on adsorbent.At field of Environment Protection, absorption method is mainly used in pretreatment and (reduces water body agent set load, reclaim utility) and advanced treating (raising water quality treatment amount, meet quality of reused water requirement), adopt additive method to be difficult to the effectively severe toxicity of process and the pollutant of difficult degradation, the effect of process is especially remarkable.
At present, sight is transferred on nano zero valence iron by increasing researcher.Nano zero valence iron (nanozero-valentiron is called for short NZVI) is made up of the nulvalent iron particle of nanoscale (1 ~ 100nm).The preparation method of nano zero valence iron is a lot, has physical method and chemical method.Physical method has physical vaporous deposition (using vaporization condensation process), Direct metal forming, sputtering method, vacuum vapor deposition method, physical crushing method and machine-alloying etc.Chemical method has solid phase reduction method and liquid phase reduction, pyrolysis carbonyl iron processes, coprecipitation, electrodeposition process, sol-gel process and hydrothermal synthesis method etc.The purposes of Nanoscale Iron is very extensive, and it not only can as absorbing material, high performance magnetic recording material, magnetic conduction pulp material and nanometer directed agents etc., can also as catalyst at C
6h
6play nucleation in gas phase thermal decomposition and prepare carbon fiber, can be used for preparing magnetic liquid etc.In the last few years, report is had when the application study of Nanoscale Iron in environmental improvement, as soil, deposit and underwater prevention aspect, and much research shows, nano zero valence iron can remove the pollutant of many chemical conventional method or the microorganism difficulty or ease degraded existed in environment very effectively, comprises the Identification of Soluble Organic chloro material, organic agricultural chemicals, organic dyestuff, various inorganic compound, heavy metal etc. of difficult degradation in waste water.
Nitroreduction can be amino by Nanoscale Iron, nitrate nitrogen is reduced to ammonia nitrogen, and then improve oxidability and biodegradable, but pulverous nano iron particles is extremely trickle, easy inactivation and reunion in water, be difficult to recycling and reclaim, also may will carry out Separation of Solid and Liquid to carry out next step process, increase processing cost further, limit its application in environment remediation.If by Nanoscale Iron load on carrier, form the particle of definite shape, not only can keep the characteristic that Nanoscale Iron is intrinsic, more can simplify the operations such as subsequent recovery process widely, improve the rate of recovery, this is the generation basis of load type active carbon nano zero valence iron.
Summary of the invention
The invention provides load type active carbon zero-valent iron material and its preparation method and application, nano level particle is due to extremely trickle, easy inactivation and reunion in water, be difficult to recycling and reclaim, also may to carry out Separation of Solid and Liquid to carry out next step process, increase processing cost further, limit its application in environment remediation; Particle is extremely trickle, only than atom, molecule more greatly, therefore can penetrate blood vessel, enter the organs such as animal cardiopulmonary, again because its surface area is relatively large, easily causes the various symptoms such as cardiopulmonary inflammation, damage, angiemphraxis.
The invention provides a kind of active carbon zero-valent iron material, not only there is the excellent suction-operated of active carbon and the strong reduction of Nanoscale Iron simultaneously, and Supported Nano Zero-valent Iron take iron as anode, C is negative electrode composition galvanic cell, to reduction reaction, there is facilitation, very big effect is had, for the deep purifying of environment micropollutants (as heavy metal ion, large molecular dye and halogenated organic matters etc.) and security control provide better technical support to the catalytic degradation of pollutant.
For solving above technical problem, technical scheme of the present invention is: a kind of load type active carbon zero-valent iron material, and it is characterized in that carrier is granular active carbon, the particle diameter of active carbon between 0.2 ~ 0.45mm, the specific area 1500m of active carbon
2above, immobilized inorganic material is nano zero valence iron particle, and the iron of load is the Fe of zero-valent state, and the nano zero valence iron particle of load is of a size of 1 ~ 100nm, and the content of Fe is at 200-2000mg/g.
Corresponding, the preparation method of described load type active carbon zero-valent iron material, comprises the following steps:
(A) pretreatment:
Particle diameter is limpid at the supreme clear liquid of active carbon washed with de-ionized water of 0.2 ~ 0.45mm, then baking oven is placed in, dry at 105 ~ 110 DEG C to constant weight and (first can dry 2h, take out and weigh, be placed in oven for drying 2h again, repeat such operation, until front and back weigh difference be not more than 0.02g), be stored in closed glass jar.
(B) preparation of loaded with nano Zero-valent Iron:
Adopt liquid phase reduction: the active carbon taking 0.5g respectively adds the 0.05mol/LFeSO of 50mL
47H
2in O solution, under room temperature (25 DEG C) condition, be placed in constant temperature oscillator, Fe
2+in active carbon, the time of fully absorption is at 30 ~ 120min, makes it fully adsorb, then, slowly adds isopyknic 0.2 ~ 2mol/LNaBH with copperas solution
4solution, is placed in constant temperature oscillator 30min, makes it fully react, and emerges until no longer include bubble in solution, reaction terminate after under 2500rpm centrifugal 10min, reaction equation is: 2Fe
2++ BH
4 -+ 2H
2o → 2Fe+BO
2 -+ 2H
2+ 4H
+.
(C) centrifugation its lytic activity charcoal loaded with nano-iron, temperature be 60 DEG C, the deionized water washed product of the ultrasonic degas of 7 minutes rotating speed 3000rpm used times 3 times, use absolute ethanol washing again 3 times, proceed to vacuum desiccator drying, after drying, obtain load type active carbon nano zero valence iron.
Corresponding, the application of described load type active carbon zero-valent iron material is the application in catalyzing and degrading pollutant.
The invention provides load type active carbon zero-valent iron material and its preparation method and application.Activated carbon supported Nanoscale Iron (NZVI/AC), not only there is the excellent suction-operated of active carbon and the strong reduction of Nanoscale Iron simultaneously, and Supported Nano Zero-valent Iron take iron as anode, C is negative electrode composition galvanic cell, has facilitation to reduction reaction.In addition, the Fe of anode production
2+under aerobic and alkali condition, Fe (H can be generated
2o)
3+ 6with Fe (OH)
3, and hydrolysis generates Fe (OH)
2+, Fe (OH)
+ 2deng complex ion, various hard-degraded substance can be precipitated by absorption and coagulation further.Current activated carbon supported Nanoscale Iron has been used to administer multiple polluted-water.For the deep purifying of environment micropollutants (as heavy metal ion, large molecular dye and halogenated organic matters etc.) and security control provide better technical support.
Detailed description of the invention
The present invention is further illustrated below by way of example:
Example one:
The active carbon of 0.5g is added the 0.05mol/LFeSO of 50mL
47H
2in O solution, under room temperature (25 DEG C) condition, be placed in constant temperature oscillator 30min, make it fully adsorb.Then, isopyknic 0.05mol/LNaBH is slowly added with copperas solution
4solution, is placed in constant temperature oscillator 30min, makes it fully react, reaction terminate after under 2500rpm centrifugal 10min.Centrifugation its lytic activity charcoal loaded with nano-iron, by the deionized water washed product 3 times of ultrasonic degas (7min, 60 DEG C, 3000rpm), then uses absolute ethanol washing 3 times, proceeds to vacuum desiccator drying.The content of this load type active carbon zero-valent iron material Fe is at 200-2000mg/g.
Activated carbon supported Nanoscale Iron Pyrogentisinic Acid has extremely strong catalytic degradation ability, illustrates, when phenol concentration in water body is 40mg/l, the concentration of phenol can be dropped to below 2mg/l by above-mentioned material in 2.5h.
Example two:
The active carbon of 0.5g is added the 0.05mol/LFeSO of 50mL
47H
2in O solution, under room temperature (25 DEG C) condition, be placed in constant temperature oscillator 30min, make it fully adsorb.Then, isopyknic 0.05mol/LNaBH is slowly added with copperas solution
4solution, is placed in constant temperature oscillator 30min, makes it fully react, reaction terminate after under 2500rpm centrifugal 10min.Centrifugation its lytic activity charcoal loaded with nano-iron, by the deionized water washed product 3 times of ultrasonic degas (7min, 60 DEG C, 3000rpm), then uses absolute ethanol washing 3 times, proceeds to vacuum desiccator drying.The content of this load type active carbon zero-valent iron material Fe is at 200-2000mg/g.
Activated carbon supported Nanoscale Iron has extremely strong catalytic degradation ability to methyl orange, illustrates, when the concentration of methyl orange in water body is 20mg/l, the concentration of methyl orange can be dropped to below 0.5mg/l by above-mentioned material in 4h.
Load type active carbon nano zero valence iron adsorbing phenol experimental program with lower part
One, laboratory apparatus and reagent
1. instrument: insulating box, ultraviolet specrophotometer, ultrasonic cleaning machine, shaking table, tool plug triangular flask
2. reagent: active carbon
Deionized water
Buffer solution: PH=10.7, takes 20g ammonium chloride and is dissolved in 100mL ammoniacal liquor;
4-AA solution: 2%;
Potassium ferricyanide solution: 8%
10mg/l phenol
40mg/L wastewater containing phenol
0.05mol/LFeSO
4·7H
2O
0.05mol/LNaBH
4
Absolute ethyl alcohol: analyze pure
Two, experiment content
1. pretreatment:
Particle diameter is limpid at the supreme clear liquid of active carbon washed with de-ionized water of 0.2 ~ 0.45mm, then baking oven is placed in, dry at 105 ~ 110 DEG C to constant weight and (first can dry 2h, take out and weigh, be placed in oven for drying 2h again, repeat such operation, until front and back weigh difference be not more than 0.02g), be stored in closed glass jar.
2. the drafting of the calibration curve of phenol:
0 is added respectively, 0.10,0.20 in 10 50mL colorimetric cylinders, 0.60,1.00,1.40,2.00,2.50,3.00, the mass concentration of 3.50ml is the phenol Standard liquid of 10mg/l, after distilled water diluting, adds the buffer solution of 0.5mL, mixing, add the 4-AA solution of 1.00mL, mixing, then add 1.0mL potassium ferricyanide solution, be diluted to assigned scale, abundant mixing, close plug, places 10 minutes, immediately at wavelength 510nm place, be that reference surveys absorbance with distilled water, record data, draw the calibration curve of absorbance-phenol concentration.
3. Phenol Value of Activated Carbon:
Before 3.1 survey Phenol Value of Activated Carbons
The water sample containing phenol getting 2.5mL, in 50ml colorimetric cylinder, after distilled water diluting, adds the buffer solution of 0.5mL, mixing, adds the 4-AA solution of 1.00mL, mixing, add 1.0mL potassium ferricyanide solution again, be diluted to assigned scale, fully mix, close plug, place 10 minutes, immediately at wavelength 510nm place, be that reference surveys absorbance with distilled water, record data.
After 3.2 survey Phenol Value of Activated Carbons
Accurately take the active carbon of 0.5g, put into 200mL tool plug triangular flask, add 40mg/L wastewater containing phenol 100mL, tool plug triangular flask is placed in shaking table, at 200r/min, react 2.5h under room temperature (25 DEG C) condition, make absorption reach balance.Filter to isolate active carbon, the step with 3.1 is done to filtrate (wastewater containing phenol).
The equilibrium adsorption capacity of active carbon Pyrogentisinic Acid is calculated as follows:
Qe＝(ρ0-ρ1)V/m
Qe---during adsorption equilibrium, the adsorbance of active carbon Pyrogentisinic Acid, mg/g;
The initial concentration of ρ 0---phenol, mg/L;
ρ 1---the phenol concentration after absorption, mg/L;
The quality of m---active carbon, g;
The volume of V---phenol solution, mL.
4. activated carbon supported Nanoscale Iron adsorbing phenol:
The preparation of 4.1 loaded with nano Zero-valent Iron:
Adopt liquid phase reduction: the active carbon taking 0.5g respectively adds the 0.05mol/LFeSO of 50mL
47H
2in O solution, under room temperature (25 DEG C) condition, be placed in constant temperature oscillator 30min, make it fully adsorb.Then, isopyknic 0.05mol/LNaBH is slowly added with copperas solution
4solution, is placed in constant temperature oscillator 30min, makes it fully react, reaction terminate after under 2500rpm centrifugal 10min.Reaction equation is: 2Fe
2++ BH
4 -+ 2H
2o → 2Fe+BO
2 -+ 2H
2+ 4H
+.
Centrifugation its lytic activity charcoal loaded with nano-iron, by the deionized water washed product 3 times of ultrasonic degas (7min, 60 DEG C, 3000rpm), then uses absolute ethanol washing 3 times, proceeds to vacuum desiccator drying.
4.2 phenol degrading experiments
Measure 100mL and be placed in 200mL tool plug triangular flask containing the waste water of phenol, add the activated carbon supported Nanoscale Iron of 0.5g; Triangular flask is placed in shaking table, at 200r/min, reacts 2.5h under room temperature (25 DEG C) condition, make absorption reach balance.After reaction terminates, take out triangular flask, filter to isolate active carbon, to filtrate (wastewater containing phenol) at room temperature aeration 30min, make iron be completely oxidized to ferric iron, get 2.5mL filtrate in 50ml colorimetric cylinder, after distilled water diluting, add the buffer solution of 0.5mL, mixing, add the 4-AA solution of 1.00mL, mixing, then add 1.0mL potassium ferricyanide solution, be diluted to assigned scale, abundant mixing, close plug, places 10 minutes, immediately at wavelength 510nm place, be that reference surveys absorbance with distilled water, record data.
Claims (3)
1. a load type active carbon zero-valent iron material, is characterized in that carrier is granular active carbon, the particle diameter of active carbon between 0.2 ~ 0.45mm, the specific area 1500m of active carbon
2above, immobilized inorganic material is nano zero valence iron particle, and the iron of load is the Fe of zero-valent state, and the nano zero valence iron particle of load is of a size of 1 ~ 100nm, and the content of Fe is at 200-2000mg/g;
The preparation method of described load type active carbon zero-valent iron material, comprises the following steps:
(A) pretreatment:
Particle diameter is limpid at the supreme clear liquid of active carbon washed with de-ionized water of 0.2 ~ 0.45mm, be then placed in baking oven, dry at 105 ~ 110 DEG C to constant weight, be stored in closed glass jar;
(B) preparation of loaded with nano Zero-valent Iron:
Adopt liquid phase reduction: the active carbon taking 0.5g respectively adds the 0.05mol/LFeSO of 50mL
47H
2in O solution, at ambient temperature, be placed in constant temperature oscillator, Fe
2+in active carbon, the time of fully absorption is at 30 ~ 120min, makes it fully adsorb, then, slowly adds isopyknic 0.2 ~ 2mol/LNaBH with copperas solution
4solution, is placed in constant temperature oscillator 30min, makes it fully react, and emerges until no longer include bubble in solution, reaction terminate after under 2500rpm centrifugal 10min, reaction equation is: 2Fe
2++ BH
4 -+ 2H
2o → 2Fe+BO
2 -+ 2H
2+ 4H
+;
(C) centrifugation its lytic activity charcoal loaded with nano-iron, temperature be 60 DEG C, the deionized water washed product of the ultrasonic degas of 7 minutes rotating speed 3000rpm used times 3 times, use absolute ethanol washing again 3 times, proceed to vacuum desiccator drying, after drying, obtain load type active carbon nano zero valence iron.
2. the application of load type active carbon zero-valent iron material according to claim 1, is characterized in that load type active carbon zero-valent iron material is applied in water body methyl orange catalytic degradation.
3. the application of load type active carbon zero-valent iron material according to claim 1, is characterized in that load type active carbon zero-valent iron material is applied to Pyrogentisinic Acid's catalytic degradation in water body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310615041.7A CN103721715B (en) | 2013-11-28 | 2013-11-28 | A kind of load type active carbon zero-valent iron material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310615041.7A CN103721715B (en) | 2013-11-28 | 2013-11-28 | A kind of load type active carbon zero-valent iron material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103721715A CN103721715A (en) | 2014-04-16 |
| CN103721715B true CN103721715B (en) | 2016-02-03 |
Family
ID=50446154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310615041.7A Expired - Fee Related CN103721715B (en) | 2013-11-28 | 2013-11-28 | A kind of load type active carbon zero-valent iron material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103721715B (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104437348A (en) * | 2014-11-12 | 2015-03-25 | 中国地质大学（武汉） | Uranium removing material for treating uranium-containing groundwater in situ and preparation method thereof |
| CN105013811B (en) * | 2015-07-02 | 2018-11-20 | 华南师范大学 | A kind of preparation and application of heavy metal chromium pollution soil remediation material |
| CN105688817A (en) * | 2016-04-01 | 2016-06-22 | 同济大学 | Metal cation adsorption filter column and preparation method thereof as well as metal cation recycling system |
| CN106378094A (en) * | 2016-11-18 | 2017-02-08 | 南京理工大学 | Preparation method of amino iron-carrying composite modified biochar |
| CN106903147B (en) * | 2017-03-09 | 2021-01-12 | 四川师范大学 | Leaching material capable of adsorbing and degrading organochlorine pollutants and preparation method thereof |
| CN106938862A (en) * | 2017-04-17 | 2017-07-11 | 吉林大学 | For the preparation method for the nanometer micro-electrolysis material for removing Tetracyclines pollutant |
| CN108187623A (en) * | 2018-03-01 | 2018-06-22 | 哈尔滨工业大学 | A kind of preparation method for effectively removing the green composite Nano magnetic material of heavy metal in environment |
| CN108356070B (en) * | 2018-04-28 | 2020-11-06 | 东南大学 | Method for degrading chlorofluorobenzene pollution in soil |
| CN110208061B (en) * | 2019-06-21 | 2021-12-14 | 辽宁石油化工大学 | Method for quantitatively collecting phenol in water environment and enabling collected phenol to stably exist |
| CN110220766B (en) * | 2019-06-21 | 2021-10-22 | 辽宁石油化工大学 | Method for quantitatively collecting phenol in water environment through composite material |
| CN110368941A (en) * | 2019-07-29 | 2019-10-25 | 东华理工大学 | The sintering activity carbon rod and preparation method and application of deposition reduction iron nano-particle in a kind of hole |
| CN111112638A (en) * | 2019-12-25 | 2020-05-08 | 华南理工大学 | Carbon-loaded nano zero-valent iron material and preparation method and application thereof |
| CN111001389A (en) * | 2020-01-06 | 2020-04-14 | 河南工业大学 | Preparation and use methods of renewable nano zero-valent iron-loaded waste clay-based activated carbon for removing heavy metals in water |
| CN111248043A (en) * | 2020-03-25 | 2020-06-09 | 宋万鹏 | High-quality astragalus membranaceus planting method combining deep ploughing regulation and water-retention fertilizer application |
| CN112808232B (en) * | 2020-11-05 | 2022-03-18 | 东南大学 | Preparation method and application of activated carbon loaded nano zero-valent iron material |
| CN114735796A (en) * | 2022-05-16 | 2022-07-12 | 湖南工业大学 | Iron-based nano flocculant and preparation method and application thereof |
| CN115554645B (en) * | 2022-09-27 | 2023-09-05 | 丽珠集团福州福兴医药有限公司 | Method for treating antibiotic residues by using hydrothermal synergistic nZVI activated persulfate |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101708457A (en) * | 2009-08-31 | 2010-05-19 | 清华大学 | Preparation method and application of activated carbon loaded nano-iron material |
| CN102068961A (en) * | 2010-09-20 | 2011-05-25 | 同济大学 | Composite material for water treatment as well as preparation method and application thereof |
| CN102205419A (en) * | 2011-03-28 | 2011-10-05 | 北京师范大学 | Novel method for preparing load nano zero valent iron |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2010306775B2 (en) * | 2009-10-14 | 2015-07-02 | The Administrators Of The Tulane Educational Fund | Novel multifunctional materials for in-situ environmental remediation of chlorinated hydrocarbons |
-
2013
- 2013-11-28 CN CN201310615041.7A patent/CN103721715B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101708457A (en) * | 2009-08-31 | 2010-05-19 | 清华大学 | Preparation method and application of activated carbon loaded nano-iron material |
| CN102068961A (en) * | 2010-09-20 | 2011-05-25 | 同济大学 | Composite material for water treatment as well as preparation method and application thereof |
| CN102205419A (en) * | 2011-03-28 | 2011-10-05 | 北京师范大学 | Novel method for preparing load nano zero valent iron |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103721715A (en) | 2014-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103721715B (en) | A kind of load type active carbon zero-valent iron material | |
| Xie et al. | Degradation of tetracycline hydrochloride through efficient peroxymonosulfate activation by B, N co-doped porous carbon materials derived from metal-organic frameworks: Nonradical pathway mechanism | |
| Xie et al. | ZIF-8 derived boron, nitrogen co-doped porous carbon as metal-free peroxymonosulfate activator for tetracycline hydrochloride degradation: Performance, mechanism and biotoxicity | |
| Li et al. | Er-doped g-C3N4 for photodegradation of tetracycline and tylosin: high photocatalytic activity and low leaching toxicity | |
| Gu et al. | High-efficiency adsorption of tetracycline by cooperation of carbon and iron in a magnetic Fe/porous carbon hybrid with effective Fenton regeneration | |
| CN111790422B (en) | Graphitized nitrogen-complexed Fe (III) -Fe0Catalyst, and synthesis method and application thereof | |
| Feng et al. | Biochar derived from different crop straws as persulfate activator for the degradation of sulfadiazine: Influence of biomass types and systemic cause analysis | |
| AU2020102420A4 (en) | Composite material of magnetic mycelium sphere loaded with reduced graphene oxide and preparation method thereof | |
| Zhao et al. | Recovery of nitrogen and phosphorus in wastewater by red mud-modified biochar and its potential application | |
| Wu et al. | Efficient removal of atrazine from aqueous solutions using magnetic Saccharomyces cerevisiae bionanomaterial | |
| Song et al. | Synthesis of magnetic nanocomposite Fe3O4@ ZIF-8@ ZIF-67 and removal of tetracycline in water | |
| CN102247809A (en) | Preparation method of bio-adsorbent with using camellia oleifera shell | |
| Lin et al. | Fabrication of lignin-based biochar containing multi-metal ferrite and efficient removal for oxytetracycline hydrochloride | |
| Zhang et al. | Uranium extraction from seawater by novel materials: A review | |
| Nirmala et al. | Removal of toxic metals from wastewater environment by graphene-based composites: A review on isotherm and kinetic models, recent trends, challenges and future directions | |
| Haijia et al. | Biosorption of Ni2+ by the surface molecular imprinting adsorbent | |
| CN103611494A (en) | Amido modified attapulgite clay adsorbent and method for preparing and adsorbing humic acid | |
| CN111732097A (en) | Preparation method and application of large-specific-surface-area graphitized carbon | |
| Yu et al. | Enhanced Cr (VI) bioreduction by biochar: Insight into the persistent free radicals mediated extracellular electron transfer | |
| CN113908835A (en) | Preparation and application of active composite material based on non-free-radical efficient mineralization sulfonamide antibiotics | |
| Kwak et al. | Surface modification of carbon materials and its application as adsorbents | |
| Tian et al. | Sequential doping of exogenous iron and nitrogen to prepare Fe-N structured biochar to enhance the activity of OTC degradation | |
| Li et al. | Adsorption of heavy metals and antibacterial activity of silicon-doped chitosan composite microspheres loaded with ZIF-8 | |
| Wen et al. | Preparation of nitrogen-doped porous carbon by urea–formaldehyde resin for the construction of membrane adsorption reactor to remove refractory pollutant | |
| CN113578263A (en) | Preparation method of adsorption material and wastewater dephosphorization process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160203 |