CN102794157A - Composite medium capable of adsorbing heavy metals - Google Patents
Composite medium capable of adsorbing heavy metals Download PDFInfo
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- CN102794157A CN102794157A CN2011101362203A CN201110136220A CN102794157A CN 102794157 A CN102794157 A CN 102794157A CN 2011101362203 A CN2011101362203 A CN 2011101362203A CN 201110136220 A CN201110136220 A CN 201110136220A CN 102794157 A CN102794157 A CN 102794157A
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- heavy metal
- activated carbon
- mercury
- shitosan
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Abstract
The invention relates to a preparation method and a using method of a composite medium capable of adsorbing heavy metals against the current pollution problem of heavy metals such as copper, mercury and the like in a quantity of chemical engineering enterprises. An adsorbing medium with a certain size is obtained by adhering activated carbon, sulfur, sulfides, crop straw powder and mycelia together through a bioactive substance, uniformly mixing 1.0-20.5% of crop straw or mycelia, 1.0-20.0% of sulfur or sulfides, 50.0%-95.5% of activated carbon and 2.5-10.0% of chitosan after acidification and ultrasonic processing according to a certain sequence, granulating, forming and drying. The composite medium can effectively enrich copper, mercury and other heavy metals in industrial waste water and further has an obvious effect on capturing mercury in gas.
Description
Technical field
The present invention relates to the preparation method of the complex media of mercury in a kind of effectively adsorptive liquid or the gas or copper, belong to industrial wastewater and waste gas pollution control and treatment field.
Background technology
Heavy metal is meant that proportion greater than 4 or 5 metal, has 45 kinds approximately, and we are usually said, and heavy metal-polluted what have a finger in every pie is exactly that content of beary metal in the environment that causes because of mankind's activity increases, and exceeds the deterioration that causes environmental quality after the normal range (NR).
Particularly recent two decades comes, and also contains heavy metals such as multiple poisonous and hazardous material such as nickel, lead, copper, zinc, chromium, mercury in the waste water by some chemical plant discharges usually, and its pollution that causes has constituted very big threat to human beings'health.These pollutants get in the water environment, can produce toxicological effect, work the mischief to health.Children ' s lead poisoning, arsenic poisoning, heavy metal cause incident such as fetal anomaly to occur repeatedly, and heavy metal pollution has become and is related to human life and healthy major hidden danger.
Mercury is a kind of element that human health and environment all are harmful to, and for example: the mercury of trace can make aquatile such as some fish dead; Inorganic mercury mainly adds up in kidney,liver,spleen, intestines and heart, to cause slow poisoning; What toxicity was maximum is the alkyl compound of mercury, can cumulatively accumulate in the brains like methyl mercury, dimethylmercury, causes a series of uncomfortable reactions, and serious can cause death.
Recognized that since people the harmfulness of mercury just carried out correlative study, some people adopts activated carbon to carry out the work that mercury ion and gaseous elemental mercury are removed, and has obtained certain achievement; Also some people utilizes the characteristic that can generate difficult volatile solid under element sulphur and the mercury element normal temperature to make an experiment, and has also obtained certain achievement.Simultaneously, there are some researches show that bioanalysis is a kind of effective ways of handling heavy metal in the low concentration wastewater.Do not utilize bioactivator that activated carbon is become to have certain loose structure, mechanical strength adsorbing medium preferably with the compound of sulphur or sulphur but also study report at present, be used for the removal of waste water and waste gas mercury.
At present China is the largest production state that carbide prepares polyvinyl chloride, in its production process, can consume a large amount of mercury chloride, and wherein most mercury chloride gets into waste liquid and waste gas, serious harm peripheral ecological environment.Because the character that mercury chloride can volatilize in company with steam together, the solution that adopts directly distillation to contain mercury chloride are separated the method for mercury chloride and inadvisable; Alkali compounds can generate the mercury oxide deposition with the mercury chloride reaction, but the solubility of mercury oxide in water is 0.005, and temperature raises or some electrolytical existence can cause that all mercury oxide solubility increases, and also can cause separating effect undesirable; Sulfide can generate deposition with mercury chloride, but in alkaline medium, excessive sulfide can generate the complex compound [HgS of solubility with mercuric sulphide
2]
2-, influence separating effect.As a kind of compound adsorbing medium of removing mercury, the known load that has has MoS
2Activated carbon fiber adsorbent (publication number CN101480605A); There is load that the activated carbon demercuration adsorbent (publication number CN101497029A) of sulphur is arranged; There is load that halide salts NaCl, CaCl are arranged
2, CuCl
2, CuBr
2, NaBr, KBr, CaBr
2And MgBr
2Activated carbon adsorbent (publication number CN101175692A).
Yet though the adsorbent of putting down in writing in the above-mentioned patent documentation can both be used for the removal of mercury, the adsorbent that has can only be used for removing of gas mercury inadequately because of its mechanical strength; What have then only is directly to carry out being used for after the preliminary treatment absorption of liquid mercury with activated carbon or with activated carbon, can not make full use of the performance of activated carbon, mercury to remove cost very high.
Summary of the invention
The present invention mainly designed a kind of can be to all adsorbable efficient compound adsorbing medium of the heavy metal in gas or the liquid, adopt shitosan and mycelium that the sorbing material of various processing is prepared into the compound adsorbing medium with certain loose structure and better mechanical strength.Main feature of the present invention is to adopt agricultural crop straw powder or mycelia physical efficiency to solve the problem that evaporation that adsorbing medium is used for high-temperature gas processing procedure sulphur may be stopped up the micropore on the activated carbon effectively; Also can improve simultaneously the adsorption capacity of adsorbent and effective adsorption surface area effectively, improve the efficient of absorption mercury, above advantage makes the present invention also can be applied to the removal of heavy metal in the environment of gas-liquid mixed.
The compound mode of complex media main component according to the invention comprises: activated carbon, sulphur or sulfide, shitosan, agricultural crop straw powder or mycelium; Activated carbon, shitosan, agricultural crop straw powder or mycelium; Activated carbon, sulphur or sulfide, shitosan; Activated carbon, shitosan.As loading on the agricultural crop straw powder on the compound adsorbing medium, being cauline leaf (fringe) part of crops wherein, can be the remainder behind wheat, paddy rice, corn, potato class, oil plant, cotton, sugarcane or other crops results seed.As the mycelium that loads on the compound adsorbing medium, can be remaining solid matter part behind the common micro-organisms sweat extraction product.The interpolation of each component order and proportioning can be regulated with composite according to concrete heavy metal processing environment situation among the present invention.
The present invention also can suitably reduce shitosan or the mycelial adding proportion in the compound adsorbing medium prescription, the complex media that makes is coated with polyurethane, nonwoven, nylon wire use again.
Description of drawings
Fig. 1: in a certain order with 77.0% activated carbon, 10.0% sulphur, 5.0% the complex media that obtains after mixing in order and drying of the shitosan of agricultural crop straw powder, 8.0% acidifying sonicated.
The specific embodiment
Instance 1
After in a certain order 5.0% agricultural crop straw, 10.0% sulphur, 77.0% activated carbon, 8.0% shitosan being mixed in order; The deionized water that adds 2 times of said mixture matter gross masses again mixes once more; Granulation can obtain adsorbing the complex media of heavy metal after the oven dry.(accompanying drawing 1)
Instance 2
After in a certain order 10.0% agricultural crop straw, 5.0% sulphur, 77.0% activated carbon, 8.0% shitosan being mixed in order; The deionized water that adds 2 times of said mixture matter gross masses again mixes once more; Granulation can obtain adsorbing the complex media of heavy metal after the oven dry.
Instance 3
After in a certain order 10.0% agricultural crop straw, 5.0% vulcanized sodium, 77.0% activated carbon, 8.0% shitosan being mixed in order; The deionized water that adds 2 times of said mixture matter gross masses again mixes once more; Granulation can obtain adsorbing the complex media of heavy metal after the oven dry.
Instance 4
After in a certain order 10.0% agricultural crop straw, 5.0% vulcanized sodium, 77.0% activated carbon, 8.0% shitosan being mixed in order; The deionized water that adds 2 times of said mixture matter gross masses again mixes once more; Granulation can obtain adsorbing the complex media of heavy metal after the oven dry.
Claims (4)
1. complex media that can adsorb heavy metal; Its main component is: activated carbon, sulphur or sulfide, shitosan; Agricultural crop straw powder or discarded mycelium; The preparation method is for mixing these several kinds of materials with the sulphur of the agricultural crop straw of 1.0-20.0% or mycelium, 1.0-20.0% or sulfide, the activated carbon of 50.0%-95.5%, the shitosan of 2.5-10.0% acidifying sonicated in a certain order in order, pelletizing forming, and oven dry obtains the particle of certain size.
2. the described activated carbon of claim 1, sulphur and sulfide, shitosan, agricultural crop straw powder and discarded mycelium all have the function of absorption heavy metal; And shitosan and discarded mycelium also have the advantage that promotes the effective adsorption surface area of complex media, with the compound complex media for preparing of these several kinds of materials except that having biological function; The function that not only has stronger collaborative absorption heavy metal; And mechanical strength is good, and easy-formation can be used for the absorption of the heavy metal of liquid.
3. according to claim 1-2, the composition interpolation order and the compound method of complex media according to the invention have controllability.
4. the complex media that is used to adsorb heavy metal described in the claim 1-3 is applicable to liquid or the gas that contains heavy metal element.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110136220.3A CN102794157B (en) | 2011-05-25 | 2011-05-25 | Composite medium capable of adsorbing heavy metals |
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|---|---|---|---|
| CN201110136220.3A CN102794157B (en) | 2011-05-25 | 2011-05-25 | Composite medium capable of adsorbing heavy metals |
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| CN102794157A true CN102794157A (en) | 2012-11-28 |
| CN102794157B CN102794157B (en) | 2014-06-04 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103877943A (en) * | 2013-10-14 | 2014-06-25 | 国家电网公司 | Activated carbon supported nano copper desulfurizing agent and preparation method and application thereof |
| CN104801285A (en) * | 2015-05-06 | 2015-07-29 | 哈尔滨工业大学 | Preparation method of mycete and agricultural and forestry waste mixed bio-adsorbent |
| CN106219661A (en) * | 2016-08-30 | 2016-12-14 | 上海交通大学 | A kind of various heavy synchronization removal and method separated in waste water |
| CN106241903A (en) * | 2016-08-11 | 2016-12-21 | 李宝全 | A kind of environmental protection water purification agent |
| CN107099302A (en) * | 2017-04-21 | 2017-08-29 | 汪逸凡 | A kind of preparation method of soil heavy metal passivant |
| CN107198974A (en) * | 2017-07-03 | 2017-09-26 | 四川恒创博联科技有限责任公司 | A kind of photocatalysis hollow fiber ultrafiltration membrane and preparation method thereof |
| CN112844310A (en) * | 2020-12-24 | 2021-05-28 | 安徽理工大学 | Substance for passivating heavy metals and method for passivating heavy metals in domestic sludge |
| CN114950353A (en) * | 2021-11-05 | 2022-08-30 | 广西师范大学 | High-activity-site molybdenum disulfide/carbon nanofiber aerogel adsorbent and preparation method thereof |
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| JPS61291038A (en) * | 1985-06-19 | 1986-12-20 | Dai Ichi Kogyo Seiyaku Co Ltd | Water purifying agent |
| CN1066008A (en) * | 1991-04-23 | 1992-11-11 | 国家医药管理局上海医药工业研究院 | The application in water purifier of chitin and derivative thereof |
| US20070265161A1 (en) * | 2006-05-11 | 2007-11-15 | Gadkaree Kishor P | Activated carbon honeycomb catalyst beds and methods for the manufacture of same |
| CN101497029A (en) * | 2009-01-08 | 2009-08-05 | 重庆大学 | Sorbent for removing mercury from flue gas and preparation method thereof |
| CN101657382A (en) * | 2007-02-28 | 2010-02-24 | 康宁股份有限公司 | Sorbent comprising activated carbon, process for making same and use thereof |
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Patent Citations (5)
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| JPS61291038A (en) * | 1985-06-19 | 1986-12-20 | Dai Ichi Kogyo Seiyaku Co Ltd | Water purifying agent |
| CN1066008A (en) * | 1991-04-23 | 1992-11-11 | 国家医药管理局上海医药工业研究院 | The application in water purifier of chitin and derivative thereof |
| US20070265161A1 (en) * | 2006-05-11 | 2007-11-15 | Gadkaree Kishor P | Activated carbon honeycomb catalyst beds and methods for the manufacture of same |
| CN101657382A (en) * | 2007-02-28 | 2010-02-24 | 康宁股份有限公司 | Sorbent comprising activated carbon, process for making same and use thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103877943A (en) * | 2013-10-14 | 2014-06-25 | 国家电网公司 | Activated carbon supported nano copper desulfurizing agent and preparation method and application thereof |
| CN103877943B (en) * | 2013-10-14 | 2015-11-11 | 国家电网公司 | A kind of activated carbon supported Nanometer Copper desulfurizing agent and its production and use |
| CN104801285A (en) * | 2015-05-06 | 2015-07-29 | 哈尔滨工业大学 | Preparation method of mycete and agricultural and forestry waste mixed bio-adsorbent |
| CN106241903A (en) * | 2016-08-11 | 2016-12-21 | 李宝全 | A kind of environmental protection water purification agent |
| CN106219661A (en) * | 2016-08-30 | 2016-12-14 | 上海交通大学 | A kind of various heavy synchronization removal and method separated in waste water |
| CN107099302A (en) * | 2017-04-21 | 2017-08-29 | 汪逸凡 | A kind of preparation method of soil heavy metal passivant |
| CN107198974A (en) * | 2017-07-03 | 2017-09-26 | 四川恒创博联科技有限责任公司 | A kind of photocatalysis hollow fiber ultrafiltration membrane and preparation method thereof |
| CN112844310A (en) * | 2020-12-24 | 2021-05-28 | 安徽理工大学 | Substance for passivating heavy metals and method for passivating heavy metals in domestic sludge |
| CN114950353A (en) * | 2021-11-05 | 2022-08-30 | 广西师范大学 | High-activity-site molybdenum disulfide/carbon nanofiber aerogel adsorbent and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN102794157B (en) | 2014-06-04 |
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Application publication date: 20121128 Assignee: BEIJING JI'AN ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Assignor: Zhou Xin Contract record no.: X2020990000541 Denomination of invention: A composite medium capable of adsorbing heavy metals Granted publication date: 20140604 License type: Common License Record date: 20201015 |