CN105854804A - Method for modifying activated carbon - Google Patents
Method for modifying activated carbon Download PDFInfo
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- CN105854804A CN105854804A CN201610336015.4A CN201610336015A CN105854804A CN 105854804 A CN105854804 A CN 105854804A CN 201610336015 A CN201610336015 A CN 201610336015A CN 105854804 A CN105854804 A CN 105854804A
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- Prior art keywords
- activated carbon
- deionized water
- hydrochloric acid
- modifying
- mol
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 173
- 238000000034 method Methods 0.000 title claims abstract description 30
- UMPKMCDVBZFQOK-UHFFFAOYSA-N potassium;iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[K+].[Fe+3] UMPKMCDVBZFQOK-UHFFFAOYSA-N 0.000 claims abstract description 17
- 230000004048 modification Effects 0.000 claims abstract description 12
- 238000012986 modification Methods 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 52
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 48
- 239000008367 deionised water Substances 0.000 claims description 48
- 229910021641 deionized water Inorganic materials 0.000 claims description 48
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 39
- 238000003756 stirring Methods 0.000 claims description 34
- 238000001914 filtration Methods 0.000 claims description 29
- 239000000706 filtrate Substances 0.000 claims description 24
- 238000007598 dipping method Methods 0.000 claims description 21
- 238000002156 mixing Methods 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 238000002386 leaching Methods 0.000 claims 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims 1
- 238000002242 deionisation method Methods 0.000 claims 1
- 229910052700 potassium Inorganic materials 0.000 claims 1
- 239000011591 potassium Substances 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- 125000000524 functional group Chemical group 0.000 abstract description 10
- 229910052760 oxygen Inorganic materials 0.000 abstract description 10
- 239000001301 oxygen Substances 0.000 abstract description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 9
- 239000010842 industrial wastewater Substances 0.000 abstract description 5
- 238000001179 sorption measurement Methods 0.000 abstract description 2
- 229910021645 metal ion Inorganic materials 0.000 abstract 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 21
- 238000007654 immersion Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000010298 pulverizing process Methods 0.000 description 6
- 239000006228 supernatant Substances 0.000 description 6
- 239000003643 water by type Substances 0.000 description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
- 235000013162 Cocos nucifera Nutrition 0.000 description 3
- 244000060011 Cocos nucifera Species 0.000 description 3
- 240000007049 Juglans regia Species 0.000 description 3
- 235000009496 Juglans regia Nutrition 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 235000020234 walnut Nutrition 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000003610 charcoal Substances 0.000 description 2
- 238000002372 labelling Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 231100000004 severe toxicity Toxicity 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
- B01J20/28057—Surface area, e.g. B.E.T specific surface area
- B01J20/28064—Surface area, e.g. B.E.T specific surface area being in the range 500-1000 m2/g
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
Abstract
The invention relates to a method for modifying activated carbon, and belongs to the technical field of modification of activated carbon. The method provided by the invention comprises the following steps: pretreating activated carbon, and then using potassium ferrate to modify the pretreated activated carbon. The activated carbon prepared by the method provided by the invention has significantly more holes, a larger specific surface area and more oxygen-containing functional groups; the modified activated carbon has greatly improved adsorption capacity to metal ions in industrial waste water.
Description
Technical field
The present invention relates to the method for modifying of a kind of activated carbon, particularly to a kind of Novel modifier modification side to activated carbon
Method.
Background technology
Along with the development of science and technology, the life of people is maked rapid progress.But people are while enjoying life, also it is faced with sternness
Environmental problem.The industrial wastewater that China discharges every year according to statistics is about 8 × 108m3, the most do not contain only the severe toxicity such as cyanide and become
Point, and containing heavy metal ion such as chromium, zinc, nickel, zinc, hydrargyrum.The stability higher due to it and extremely strong toxicity, use tradition
Water treatment technology process these industrial wastewaters and consume the energy the most in a large number, the secondary refuse of generation also tends to be difficult to process.
Activated carbon is a kind of excellent adsorbent, has loose structure, and adsorption capacity is big, speed is fast, and the highest physics is inhaled
Echoing chemisorbed function, efficiency is high, the advantages such as removal effect is good, and maximum feature can recycle exactly, saturated laggard
Row desorption and regeneration；And activated carbon have price low, in acid and alkaline medium good stability, the spy such as surface nature is adjustable
Point, and activated carbon surface is chemical inertness.It is widely used in waste water process.Activated carbon is improved by modified activated carbon
Absorption property, is so possible not only to protect environment, moreover it is possible to reduce industrial cost.
The present invention uses potassium ferrate activation method, and the activated carbon through pretreatment has been carried out pore structure and oxygen-containing functional group
Modification, the activated carbon hole showed increased prepared, specific surface area increase, oxygen-containing functional group increases；Modification goes out
Activated carbon can have greatly lifting to metal biosorption ability in industrial wastewater.
Summary of the invention
The present invention purpose be to provide the method for modifying of a kind of activated carbon, specifically include following steps:
(1) pretreatment of activated carbon: activated carbon is pulverized, clean, obtain activated carbon I after drying, activated carbon I is used hydrochloric acid solution
Stirring dipping, sucking filtration, then cleans identical with deionized water pH to filtrate with deionized water, obtains activated carbon II after drying；Will
Activated carbon II sodium hydroxide solution stirring dipping, sucking filtration, cleans identical with deionized water pH to filtrate with deionized water, is dried
After obtain activated carbon III, standby；
(2) modification of activated carbon: with the pH of highly basic (such as potassium hydroxide, sodium hydroxide) regulation potassium ferrate solution be 7 ~
9, then activated carbon III is added in potassium ferrate solution, put in water bath with thermostatic control, stir dipping 2 ~ 4 h, be subsequently adding hydrochloric acid
Solution stirring, sucking filtration, clean identical with deionized water pH to filtrate with deionized water, obtain modified activated carbon after drying.
Preferably, 50 mesh sieves are crossed after step of the present invention (1) being pulverized.
Preferably, the condition of step of the present invention (1) described hydrochloric acid solution stirring dipping is: the concentration of hydrochloric acid solution is 1 ~ 3
Mol/L, mixing time is 1 ~ 3 h.
Preferably, the condition of step of the present invention (1) described sodium hydroxide solution stirring dipping is: sodium hydroxide solution dense
Degree is 1 ~ 3 mol/L, and mixing time is 1 ~ 3 h.
Preferably, the condition of step of the present invention (2) described potassium ferrate solution stirring dipping is: potassium ferrate concentration is
0.01 ~ 0.10 mol/L, whipping temp is 30 ~ 60 DEG C；Activated carbon III is 5 ~ 15g/L with the solid-to-liquid ratio of potassium ferrate solution.
Preferably, the condition of step of the present invention (2) described hydrochloric acid solution stirring dipping is: concentration of hydrochloric acid is 1 ~ 3 mol/L,
Mixing time is 1 ~ 3 h.
Activated carbon (commercially available activated carbon) used is walnut shell activated carbon, timber activated carbon, cocoanut active charcoal, Fructus Pruni shell activity
Other vegetable active charcoals such as charcoal, activated carbon from bamboo, Fructus Jujubae shell activated carbon.
The condition being dried is: baking temperature is 105 DEG C, and drying time is 10 h.
The invention have the benefit that
(1) modified activated carbon specific surface area increased.
(2) modified activated carbon hole showed increased.
(3) modified activated carbon oxygen-containing functional group increases.
In sum, the present invention is simple to operate, low cost, requires low to experiment condition, and modified effect is good.Modified through this
Metal biosorption ability can be strengthened；Being processed into of industrial wastewater can be reduced by reducing the dosage of activated carbon
This.
Accompanying drawing explanation
Fig. 1 is embodiment 1 rear infrared comparison diagram before modified；
Fig. 2 is embodiment 1 rear SEM comparison diagram before modified；
Fig. 3 is embodiment 2 rear infrared comparison diagram before modified；
Fig. 4 is embodiment 2 rear SEM comparison diagram before modified；
Fig. 5 is embodiment 3 rear infrared comparison diagram before modified；
Fig. 6 is embodiment 3 rear SEM comparison diagram before modified.
Detailed description of the invention
Below by the drawings and specific embodiments, the invention will be further described, but is not meant to protect the present invention
Protect the restriction of scope.
Embodiment 1
A kind of method of modified activated carbon described in the present embodiment, specifically includes following steps:
(1) walnut shell activated carbon is carried out pulverization process, cross 50 mesh sieves.
(2) 100 g walnut shell activated carbons are placed in beaker, add 700 ml deionized waters, 1 h is stirred at room temperature, stand,
Float in abandoning supernatant, sucking filtration, 105 DEG C are dried 10 h, standby (being labeled as No. I).
(3) taking in the beaker that No. I activated carbon 60 g is equipped with 750 ml, 2 mol/L hydrochloric acid solutions, room temperature immersion stirs
2 h, sucking filtration, it is washed with deionized water to filtrate identical with deionized water pH, 105 DEG C are dried 10 h, standby (being labeled as No. II).
(4) take in the beaker that No. II activated carbon 50 g is equipped with 625 ml, 2 mol/L sodium hydroxide solutions, in room temperature
Dipping stirring 2 h, sucking filtration, it is washed with deionized water to filtrate identical with deionized water pH, 105 DEG C of dry 10 h, standby (it is labeled as
No. III).
(5) to 200 ml, 0.1 mol/L potassium ferrate solution (with potassium hydroxide regulation pH value be 7 ~ 9) in, add 2
No. III activated carbon of g, seals beaker mouth plastic paper, at 45 DEG C of water-baths dipping stirring 3 h, then add in beaker 50 ml,
The hydrochloric acid solution of 2 mol/L, is stirred at room temperature 2 h, sucking filtration, is washed with deionized water to filtrate identical with deionized water pH, at 105 DEG C
It is dried 10h, standby.
The activated carbon specific surface area of the present embodiment modification increases, hole increases, oxygen-containing functional group increases, as shown in Figure 1, 2.
Table 1 is the present embodiment rear specific surface area before modified
。
Embodiment 2
A kind of method of modified activated carbon described in the present embodiment, specifically includes following steps:
(1) timber activated carbon is carried out pulverization process, cross 50 mesh sieves.
(2) 100 g timber activated carbons are placed in beaker, add 700 ml deionized waters, 1 h is stirred at room temperature, stand, abandon
Removing the float in supernatant, sucking filtration, 105 DEG C are dried 10 h, standby (being labeled as No. I).
(3) taking in the beaker that No. I activated carbon 60 g is equipped with 750 ml, 2 mol/L hydrochloric acid solutions, room temperature immersion stirs
2 h, sucking filtration, it is washed with deionized water to filtrate identical with deionized water pH, 105 DEG C of dry 10h, standby (being labeled as No. II).
(4) take in the beaker that No. II activated carbon 50 g is equipped with 625 ml, 2 mol/L sodium hydroxide solutions, in room temperature
Dipping stirring 2 h, sucking filtration, it is washed with deionized water to filtrate identical with deionized water pH, is dried 10 h, standby (labelling at 105 DEG C
It it is No. III).
(5) in the potassium ferrate solution (being 7 ~ 9 with potassium hydroxide regulation pH value) of 200 ml, 0.06mol/L, 3 are added
No. III activated carbon of g, seals beaker mouth plastic paper, at 45 DEG C of water-baths dipping stirring 3 h, then add in beaker 30 ml,
The hydrochloric acid solution of 2 mol/L, is stirred at room temperature 2 h, sucking filtration, is washed with deionized water to filtrate identical with deionized water pH, at 105 DEG C
It is dried 10 h, standby.
The activated carbon specific surface area of the present embodiment modification increases, hole increases, oxygen-containing functional group increases, as shown in Figure 3,4.
Table 2 is the present embodiment rear specific surface area before modified
。
Embodiment 3
A kind of method of modified activated carbon described in the present embodiment, specifically includes following steps:
(1) cocoanut active charcoal is carried out pulverization process, cross 50 mesh sieves.
(2) 100 g cocoanut active charcoals are placed in beaker, add 700ml deionized water, 1 h is stirred at room temperature, stand, abandon
Remove the float in supernatant, sucking filtration, be dried 10 h, standby (being labeled as No. I) at 105 DEG C.
(3) taking in the beaker that No. I activated carbon 60 g is equipped with 750 ml, 2 mol/L hydrochloric acid solutions, room temperature immersion stirs
2 h, sucking filtration, it is washed with deionized water to filtrate identical with deionized water pH, is dried 10 h, standby (being labeled as No. II) at 105 DEG C.
(4) take in the beaker that No. II activated carbon 50 g is equipped with 625 ml, 2 mol/L sodium hydroxide solutions,
Room temperature immersion stirs 2 h, sucking filtration, is washed with deionized water to filtrate identical with deionized water pH, is dried 10 h at 105 DEG C,
Standby (being labeled as No. III).
(5) in the potassium ferrate solution (being 7 ~ 9 with potassium hydroxide regulation pH value) of 200 ml, 0.01mol/L, 2 are added
No. III activated carbon of g, seals beaker mouth plastic paper, at 45 DEG C of water-baths dipping stirring 3 h, then add in beaker 10 ml,
The hydrochloric acid solution of 1 mol/L, is stirred at room temperature 3 h, is washed with deionized water to filtrate identical with deionized water pH, is dried at 105 DEG C
10 h, standby.
The activated carbon specific surface area of the present embodiment modification increases, hole increases, many said minuscule hole, oxygen-containing functional group occur
Increase, as shown in Figure 5,6.
Table 3 is the present embodiment rear specific surface area before modified
。
Embodiment 4
A kind of method of modified activated carbon described in the present embodiment, specifically includes following steps:
(1) Fructus Pruni shell activated carbon is carried out pulverization process, cross 50 mesh sieves.
(2) 100 g Fructus Pruni shell activated carbons are placed in beaker, add 700 ml deionized waters, 1 h is stirred at room temperature, stand, abandon
Remove the float in supernatant, sucking filtration, be dried 10 h, standby (being labeled as No. I) at 105 DEG C.
(3) taking in the beaker that No. I activated carbon 60 g is equipped with 750 ml, 3 mol/L hydrochloric acid solutions, room temperature immersion stirs
3 h, sucking filtration, it is washed with deionized water to filtrate identical with deionized water pH, is dried 10 h, standby (being labeled as No. II) at 105 DEG C.
(4) take in the beaker that No. II activated carbon 50 g is equipped with 625 ml, 3 mol/L sodium hydroxide solutions, in room temperature
Dipping stirring 1 h, sucking filtration, it is washed with deionized water to filtrate identical with deionized water pH, is dried 10 h, standby (labelling at 105 DEG C
It it is No. III).
(5) in 200 ml, 0.08 mol/L potassium ferrate solution (being 7 ~ 9 with potassium hydroxide regulation pH value), 3 g are added
No. III activated carbon, seals beaker mouth plastic paper, 30 DEG C of water-baths dipping stirring 4 h, then add in beaker 30 ml, 3
The hydrochloric acid solution of mol/L, is stirred at room temperature 1 h, sucking filtration, is washed with deionized water to filtrate identical with deionized water pH, at 105 DEG C
It is dried 10 h, standby.
The activated carbon specific surface area of the present embodiment modification increases, hole increases, occurs that said minuscule hole, oxygen-containing functional group increase
Many.
Table 4 is the present embodiment rear specific surface area before modified
。
Embodiment 5
A kind of method of modified activated carbon described in the present embodiment, specifically includes following steps:
(1) activated carbon from bamboo is carried out pulverization process, cross 50 mesh sieves.
(2) 100 g activated carbon from bamboo are placed in beaker, add 700 ml deionized waters, 1 h is stirred at room temperature, stand, abandon
Remove the float in supernatant, sucking filtration, be dried 10 h, standby (being labeled as No. I) at 105 DEG C.
(3) taking in the beaker that No. I activated carbon 60 g is equipped with 750 ml, 1 mol/L hydrochloric acid solution, room temperature immersion stirs
2 h, sucking filtration, it is washed with deionized water to filtrate identical with deionized water pH, is dried 10 h, standby (being labeled as No. II) at 105 DEG C.
(4) take No. II activated carbon 50g to be equipped with in the beaker of 625ml, 3mol/L sodium hydroxide solution, at room temperature immersion
Stir 3 h, sucking filtration, be washed with deionized water to filtrate identical with deionized water pH, be dried 10 h at 105 DEG C, standby (be labeled as III
Number).
(5) in 200 ml, 0.04mol/L potassium ferrate solutions (being 7 ~ 9 with potassium hydroxide regulation pH value), 3 g are added
No. III activated carbon, seals beaker mouth plastic paper, at 60 DEG C of water-baths dipping stirring 2 h, then add in beaker 40 ml, 1
The hydrochloric acid solution of mol/L, is stirred at room temperature 3 h, sucking filtration, is washed with deionized water to filtrate identical with deionized water pH, does at 105 DEG C
Dry 10 h, standby.
The activated carbon specific surface area of the present embodiment modification increases, hole increases, oxygen-containing functional group increases.
Table 5 is the present embodiment rear specific surface area before modified
。
Embodiment 6
A kind of method of modified activated carbon described in the present embodiment, specifically includes following steps:
(1) Fructus Jujubae shell activated carbon is carried out pulverization process, cross 50 mesh sieves.
(2) 100 g Fructus Jujubae shell activated carbons are placed in beaker, add 700 ml deionized waters, 1 h is stirred at room temperature, stand, abandon
Remove the float in supernatant, sucking filtration, be dried 10 h, standby (being labeled as No. I) at 105 DEG C.
(3) take in the beaker that No. I activated carbon 60 g is equipped with 750 ml, 3 mol/L hydrochloric acid solutions, stir at room temperature immersion
Mix 1 h, sucking filtration, be washed with deionized water to filtrate identical with deionized water pH, be dried 10 h at 105 DEG C, standby (be labeled as II
Number).
(4) taking in the beaker that No. II activated carbon 50 g is equipped with 625 ml, 1 mol/L sodium hydroxide solution, room temperature is soaked
Stain stirs 2 h, sucking filtration, is washed with deionized water to filtrate identical with deionized water pH, is dried 10 h at 105 DEG C, standby (is labeled as
No. III).
(5) in 200 ml, 0.02 mol/L potassium ferrate solution (being 7 ~ 9 with potassium hydroxide regulation pH value), 1 is added
No. III activated carbon of g, seals beaker mouth plastic paper, at 30 DEG C of water-baths dipping stirring 2 h, then add in beaker 10 ml,
The hydrochloric acid solution of 2 mol/L, is stirred at room temperature 2 h, sucking filtration, is washed with deionized water to filtrate identical with deionized water pH, at 105 DEG C
It is dried 10 h, standby.
The activated carbon specific surface area of the present embodiment modification increases, hole increases, oxygen-containing functional group increases.
Table 6 is the present embodiment rear specific surface area before modified
。
Claims (6)
1. the method for modifying of an activated carbon, it is characterised in that specifically include following steps:
(1) pretreatment of activated carbon: activated carbon is pulverized, clean, obtain activated carbon I after drying, activated carbon I is used hydrochloric acid solution
Stirring dipping, sucking filtration, then cleans identical with deionized water pH to filtrate with deionized water, obtains activated carbon II after drying；Will
Activated carbon II sodium hydroxide solution stirring dipping, sucking filtration, cleans identical with deionized water pH to filtrate with deionized water, is dried
After obtain activated carbon III, standby；
(2) modification of activated carbon: the pH regulating potassium ferrate solution with highly basic is 7 ~ 9, then activated carbon III is added height
In potassium ferrite solution, put in water bath with thermostatic control, stir dipping 2 ~ 4 h, be subsequently adding hydrochloric acid solution stirring, sucking filtration, use deionization
Water cleans identical with deionized water pH to filtrate, obtains modified activated carbon after drying.
The method of modifying of activated carbon the most according to claim 1, it is characterised in that: cross 50 mesh sieves after step (1) is pulverized.
The method of modifying of activated carbon the most according to claim 1, it is characterised in that: the stirring leaching of step (1) described hydrochloric acid solution
The condition of stain is: the concentration of hydrochloric acid solution is 1 ~ 3 mol/L, and mixing time is 1 ~ 3 h.
The method of modifying of activated carbon the most according to claim 1, it is characterised in that: step (1) described sodium hydroxide solution stirs
The condition mixing dipping is: the concentration of sodium hydroxide solution is 1 ~ 3 mol/L, and mixing time is 1 ~ 3 h.
The method of modifying of activated carbon the most according to claim 1, it is characterised in that: step (2) described potassium ferrate solution stirs
The condition mixing dipping is: potassium ferrate concentration is 0.01 ~ 0.10 mol/L, and whipping temp is 30 ~ 60 DEG C；Activated carbon III and high ferro
The solid-to-liquid ratio of acid potassium solution is 5 ~ 15g/L.
The method of modifying of activated carbon the most according to claim 1, it is characterised in that: the stirring leaching of step (2) described hydrochloric acid solution
The condition of stain is: concentration of hydrochloric acid is 1 ~ 3 mol/L, and mixing time is 1 ~ 3 h.
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| CN201610336015.4A CN105854804B (en) | 2016-05-20 | 2016-05-20 | A kind of method of modifying of activated carbon |
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| CN201610336015.4A CN105854804B (en) | 2016-05-20 | 2016-05-20 | A kind of method of modifying of activated carbon |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107175073A (en) * | 2017-07-04 | 2017-09-19 | 嘉兴沃特泰科环保科技有限公司 | A kind of preparation method and application of water process activated carbon |
| CN107486148A (en) * | 2017-08-01 | 2017-12-19 | 上海纳米技术及应用国家工程研究中心有限公司 | A kind of niobium modified activated carbon preparation method and products thereof and application |
| CN108439401A (en) * | 2018-04-19 | 2018-08-24 | 句容市盛达环保净化材料有限公司 | A kind of preparation method of activated carbon |
| CN109046250A (en) * | 2018-09-10 | 2018-12-21 | 西安文理学院 | A kind of garden waste biomass carbon method of modifying |
| CN109701491A (en) * | 2019-02-20 | 2019-05-03 | 长江大学 | A kind of modified corn core and the preparation method and application thereof |
| CN110482750A (en) * | 2019-09-04 | 2019-11-22 | 四川省银河化学股份有限公司 | It is separated and recovered from the method using chromium in chromium-electroplating waste water |
| CN110775974A (en) * | 2019-11-22 | 2020-02-11 | 庆阳职业技术学院 | Preparation method of microporous apricot shell activated carbon |
| WO2022083090A1 (en) * | 2020-10-24 | 2022-04-28 | 青岛科技大学 | Impurity removal and modification method for pyrolysis carbon black of waste tires |
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| CN104275149A (en) * | 2013-07-08 | 2015-01-14 | 中国石油大学(华东) | Preparation method and application of modified activated carbon material |
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| CN104275149A (en) * | 2013-07-08 | 2015-01-14 | 中国石油大学(华东) | Preparation method and application of modified activated carbon material |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107175073A (en) * | 2017-07-04 | 2017-09-19 | 嘉兴沃特泰科环保科技有限公司 | A kind of preparation method and application of water process activated carbon |
| CN107175073B (en) * | 2017-07-04 | 2020-07-07 | 嘉兴沃特泰科环保科技股份有限公司 | Preparation method and application of water treatment activated carbon |
| CN107486148A (en) * | 2017-08-01 | 2017-12-19 | 上海纳米技术及应用国家工程研究中心有限公司 | A kind of niobium modified activated carbon preparation method and products thereof and application |
| CN108439401A (en) * | 2018-04-19 | 2018-08-24 | 句容市盛达环保净化材料有限公司 | A kind of preparation method of activated carbon |
| CN109046250A (en) * | 2018-09-10 | 2018-12-21 | 西安文理学院 | A kind of garden waste biomass carbon method of modifying |
| CN109046250B (en) * | 2018-09-10 | 2021-07-02 | 西安文理学院 | Garden waste biomass charcoal modification method |
| CN109701491A (en) * | 2019-02-20 | 2019-05-03 | 长江大学 | A kind of modified corn core and the preparation method and application thereof |
| CN110482750A (en) * | 2019-09-04 | 2019-11-22 | 四川省银河化学股份有限公司 | It is separated and recovered from the method using chromium in chromium-electroplating waste water |
| CN110775974A (en) * | 2019-11-22 | 2020-02-11 | 庆阳职业技术学院 | Preparation method of microporous apricot shell activated carbon |
| WO2022083090A1 (en) * | 2020-10-24 | 2022-04-28 | 青岛科技大学 | Impurity removal and modification method for pyrolysis carbon black of waste tires |
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