CN105417667B - A kind of Compositional type heavy metal chelating agent and preparation method thereof - Google Patents
A kind of Compositional type heavy metal chelating agent and preparation method thereof Download PDFInfo
- Publication number
- CN105417667B CN105417667B CN201510780227.7A CN201510780227A CN105417667B CN 105417667 B CN105417667 B CN 105417667B CN 201510780227 A CN201510780227 A CN 201510780227A CN 105417667 B CN105417667 B CN 105417667B
- Authority
- CN
- China
- Prior art keywords
- heavy metal
- preparation
- metal chelating
- compositional type
- urea
- 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.)
- Active
Links
Classifications
-
- 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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/62—Heavy metal compounds
-
- 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
-
- 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
- C02F2101/22—Chromium or chromium compounds, e.g. chromates
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Removal Of Specific Substances (AREA)
- Treatment Of Water By Ion Exchange (AREA)
Abstract
The present invention relates to a kind of Compositional type heavy metal chelating agents and preparation method thereof.The novel heavy metal trapping agent is prepared by the material combination of following weight proportion：Urea 10 15%, straight chain small molecule amine substance 0.8 1.7%, carbon disulfide 25 38%, alkaline matter 13 20%, surfactant 0.5 0.8%, remaining be water.Preparation process includes plus water mixing urea and alkaline matter, adjusts reaction temperature and persistently stirs, and adds in straight chain small molecule aminated compounds reaction certain time, carbon disulfide is added dropwise afterwards, the reaction was continued, is eventually adding surfactant, and product is obtained after stirring evenly.The method of the present invention significantly improves trapping effect of the dithiocarbamates heavy metal chelating agent to heavy metal, and shortens the preparation time for recapturing agent, and the product is good to the actual processing effect of heavy metal wastewater thereby.
Description
Technical field
The present invention relates to technical field of waste water processing, are specifically a kind of Compositional type heavy metal chelating agent and preparation method thereof.
Background technology
With the development of industrial production and urban modernization, environmental pollution is increasingly severe.Water be the mankind depend on for existence and
The material base of development, therefore the highest attention of people is constantly subjected to the problem of water pollution.And heavy metal ion is water environment
In one of major pollutants, such as Hg, Cd, Cr, Ni.Especially the industries such as smelting, chemical industry, electronics, mining and plating are because big
Amount discharges the largely waste water containing heavy metal ion using all kinds of heavy metals and heavy metal compound.These heavy metal-containing waste waters one
Aspect endangers aquatic ecosystem, and various illeffects are generated to aquatile；On the other hand drinking water, skin contact, food are passed through
Object chain approach directly or indirectly influences human health.
Heavy metal wastewater thereby method has neutralization precipitation method, ion-exchange-resin process, film osmosis, flocculent precipitation, life at present
Object facture etc., wherein it is flocculent precipitation that application is most common.These processing methods are removal efficiency is unstable, environmental benefit
Or all there are some shortcomings in terms of economic benefit.Various heavy metal ion agent for capturing are developed in succession both at home and abroad at present, it is profit
It is connected with the agent of recapturing containing coordination atom with heavy metal ion with coordinate bond, generates a kind of compound of stable chelate,
This method removal efficiency is high, particularly also there is extraordinary effect to low concentration wastewater, generates Complex stabilization,
It will not under strong acid or strong alkaline condition.The most study and best heavy metal ion agent for capturing of performance is mainly two both at home and abroad at present
Thiocarbamate and its derivative species (DTC) heavy metal capturing agent, basic synthetic method are by-CS2- group connects
Branch is on the amino of macromolecular chain.The application process that DTC recaptures agent is simple, can be in the case where contents of many kinds of heavy metal ion coexists one
Secondary property removal.But due to its main synthetic polyamine compounds there are it is expensive, have the restraining factors such as certain toxicity,
So as to limit the large-scale promotion application of DTC class heavy metal chelating agents.
Patent of invention CN103466775A discloses a kind of preparation method of heavy metal ion agent for capturing, it is characterised in that：
It is mainly prepared by urea, aminated compounds, carbon disulfide, adjuvant, alkaline matter and distilled water, and each component is by weight
Percentage proportioning is as follows：Urea 9-30%, aminated compounds 1-6%, adjuvant 0-4.5%, carbon disulfide 21-45%, alkalescence
Substance 8-17%, distilled water 20-35%；Step of preparation process is：Urea and alkaline matter are placed in reaction kettle and add in distillation
Water stirring and dissolving, controlling reaction temperature are 25-60 DEG C, add aminated compounds, and reaction 30-60 minutes is mixed；It need to add
When adding adjuvant, add in adjuvant at 40-60 DEG C and be mixed and react 30-60 minutes, at normal pressure and 25-40 DEG C, by
Carbon disulfide is added dropwise to, maintains reaction temperature constant, is stirred to react 90-300 minutes, obtains orange-yellow mixing liquid, by this
Liquid is washed with water, after ethanol dehydration through vacuum drying, you can finished product.But Yi Shang patent of invention still has urea, amine
The defects of dosage of compound is higher, and reagent toxicity is larger, needs to heat in preparation process, and preparation time is longer affects weight
The preparation and use of metal ion capturing agent.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of new Compositional type heavy metal capturing agent, for containing weight
Metal ion sewage disposal, improve heavy metal removing rate while overcome traditional agent for capturing production cost it is high the defects of.
The invention is realized by the following technical scheme：
A kind of preparation method of Compositional type heavy metal chelating agent, by urea, straight chain small molecule amine substance, carbon disulfide,
Alkaline matter, inorganic anion surfactant, water are prepared, and each component weight percent proportioning is respectively：Urea 10-
15%th, straight chain small molecule amine substance 0.8-1.7%, carbon disulfide 25-38%, alkaline matter 13-20%, surfactant
0.5-0.8%, remaining be water；
Preparation process is：With alkaline matter water is added to mix in urea, controlling reaction temperature is 20-30 DEG C, adds straight chain
Small molecule amine material mixing reacts 15-30min, after be added dropwise carbon disulfide, maintain reaction temperature constant, it is anti-to continue mixing
90-120min is answered, is eventually adding inorganic anion surfactant, product is obtained after being stirred to react 3-8min.
The preparation method of the Compositional type heavy metal chelating agent of the present invention, the alkaline matter is sodium hydroxide, potassium hydroxide
One or both of mixing.
The present invention Compositional type heavy metal chelating agent preparation method, the straight chain small molecule amine substance for ethylenediamine,
One or more mixing in diethylenetriamine, triethylene tetramine.
The preparation method of the Compositional type heavy metal chelating agent of the present invention, the urea rub with straight chain small molecule amine substance
The ratio between your number is 10:1-20:1.
The preparation method of the Compositional type heavy metal chelating agent of the present invention, the inorganic anion surfactant are dodecane
The mixing of one or both of base sodium sulphate, neopelex.
A kind of Compositional type heavy metal chelating agent is by being made using preparation method as described above.
The present invention carries out dithioamnoformic acid modifying by the way that urea is mixed with amine substance with certain proportion, afterwards with
Anion surfactant compounds to obtain a kind of novel built type heavy metal capturing agent, since use is cheap and easy to get in the market
Urea produce heavy metal capturing agent for main component, room temperature can synthesize, and building-up process is easy to operate, generated time contracting
It is short, at low cost, easy to use.Furthermore, while heteropolarity (such as anion) surfactant and the positively charged gold in aqueous solution
Selective absorption can be occurred by belonging to ion, but since its molecule is complicated, steric hindrance is big, is typically only capable to form 1 with heavy metal:1
Complex compound, be used alone precipitation of heavy metals ion effect it is not notable.It is found through experiments that in the present invention, using only few
On the premise of measuring inorganic anion surfactant, by controlling the dosage of inorganic anion surfactant, it can use
While inorganic anion surfactant reduces aqueous solution surface tension so that surfactant and the positively charged in aqueous solution
Selective absorption occurs for the heavy metal ion of lotus, forms complex compound, and recaptures dosage form into compounding effect with former DTC classes, generates association
Same-action, it is more preferable to the trapping effect of heavy metal under equal dosage, added amount of chemical can be reduced, it is further cost-effective.
Specific embodiment
Technical scheme is further described below by way of specific experimental data.
Embodiment 1：With 15g sodium hydroxides water is added to mix in 12g urea, controlling reaction temperature is 25 DEG C, adds diethyl
Alkene triamine 1.5g continues to stir 20min, after be added dropwise carbon disulfide 35ml, the 90min that maintains that reaction temperature is constant, and the reaction was continued
After obtain product and commonly recapture agent W1.
Embodiment 2：With 15g sodium hydroxides water is added to mix in 12g urea, controlling reaction temperature is 25 DEG C, adds diethyl
Alkene triamine 1.5g continues to stir 20min, after be added dropwise carbon disulfide 35ml, maintain that reaction temperature is constant, and the reaction was continued
90min adds neopelex 0.6g, is stirred to react after 5min and obtains product Compositional type and recapture agent W2.
Embodiment 3：With 18g sodium hydroxides water is added to mix in 15g urea, controlling reaction temperature is 25 DEG C, adds three second
Alkene tetramine 1.5g continues to stir 30min, after be added dropwise carbon disulfide 45ml, maintain that reaction temperature is constant, and the reaction was continued
120min adds neopelex 0.8g, is stirred to react after 8min and obtains product Compositional type and recapture agent W3.
Embodiment 4：With 15g sodium hydroxides water is added to mix in 10g urea, controlling reaction temperature is 25 DEG C, adds diethyl
Alkene triamine 0.5g and triethylene tetramine 0.5g continues to stir 15min, after be added dropwise carbon disulfide 30ml, maintain reaction temperature not
Become, the reaction was continued 100min adds neopelex 0.5g, is stirred to react after 3min and obtains product Compositional type and recapture
Agent W4.
Removal effect compares：
Mixture-metal (Cu, Ni, Pb, Cr) waste water is prepared, each heavy metal concentration is 5mg/L, takes 50mL, adds respectively
It is obtained in 0.5ml above-described embodiments commonly recapture agent W1, Compositional type recaptures agent W2, Compositional type recaptures agent W3, Compositional type is recaptured
Agent W4 and 2.5mg neopelex, heavy metals removal effect are as shown in the table：
It is universal to the removal effect of heavy metal to recapture agent W2, W3, W4 for self-control Compositional type it can be seen from experimental data in table
Higher than commonly agent W1 is recaptured, because anion surfactant can be selected with the positively charged metal ion in aqueous solution
Property absorption, water soluble complex or insoluble precipitate are generated, in addition, surfactant adds the surface for reducing aqueous solution
Tension can promote the co-precipitation of heavy metal, form the synergistic effect that agent is recaptured with DTC classes.But due to surfactant molecule
Complexity, steric hindrance is big, can only form 1 with heavy metal:1 complex compound, so on the premise of using only surfactant,
It will recapture agent to the trapping effect of heavy metal less than the DTC classes of synthesis under equal dosage.
Claims (5)
1. a kind of preparation method of Compositional type heavy metal chelating agent, which is characterized in that by urea, straight chain small molecule amine substance,
Carbon disulfide, alkaline matter, inorganic anion surfactant, water are prepared, and each component weight percent proportioning is respectively：
It is urea 10-15%, straight chain small molecule amine substance 0.8-1.7%, carbon disulfide 25-38%, alkaline matter 13-20%, inorganic
Anion surfactant 0.5-0.8%, remaining be water, wherein the inorganic anion surfactant be dodecyl sulphur
The mixing of one or both of sour sodium, neopelex；
Preparation process is：With alkaline matter water is added to mix in urea, controlling reaction temperature is 20-30 DEG C, adds small point of straight chain
Sub- amine substance hybrid reaction 15-30min, after be added dropwise carbon disulfide, maintain reaction temperature constant, continue hybrid reaction
90-120min is eventually adding inorganic anion surfactant, and product is obtained after being stirred to react 3-8min.
2. the preparation method of Compositional type heavy metal chelating agent according to claim 1, it is characterised in that：The alkaline matter
For the mixing of one or both of sodium hydroxide, potassium hydroxide.
3. the preparation method of Compositional type heavy metal chelating agent according to claim 1, it is characterised in that：Small point of the straight chain
Sub- amine substance is ethylenediamine, one or more mixing in diethylenetriamine, triethylene tetramine.
4. the preparation method of Compositional type heavy metal chelating agent according to claim 1, it is characterised in that：The urea with it is straight
The ratio between molal quantity of chain small molecule amine substance is 10:1-20:1.
5. a kind of Compositional type heavy metal chelating agent, it is characterised in that be made using the preparation method as described in claim 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510780227.7A CN105417667B (en) | 2015-11-13 | 2015-11-13 | A kind of Compositional type heavy metal chelating agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510780227.7A CN105417667B (en) | 2015-11-13 | 2015-11-13 | A kind of Compositional type heavy metal chelating agent and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105417667A CN105417667A (en) | 2016-03-23 |
| CN105417667B true CN105417667B (en) | 2018-06-05 |
Family
ID=55496288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510780227.7A Active CN105417667B (en) | 2015-11-13 | 2015-11-13 | A kind of Compositional type heavy metal chelating agent and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105417667B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111825193A (en) * | 2020-06-18 | 2020-10-27 | 四川润邦利泰科技有限公司 | Recapture agent, preparation method thereof and method for treating lead ions in wastewater |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003012017A1 (en) * | 2001-08-03 | 2003-02-13 | Peter Morton | Compositions for removing metal ions from aqueous process solutions and methods of use thereof |
| CN101885572A (en) * | 2010-06-25 | 2010-11-17 | 江苏江达生态科技有限公司 | Environmentally-friendly eluent for treating heavy metal contaminated soil and sludge |
| CN103466775A (en) * | 2013-09-27 | 2013-12-25 | 广西博世科环保科技股份有限公司 | Method for preparing heavy metal ion catching agent |
| CN104761680A (en) * | 2015-03-19 | 2015-07-08 | 东北师范大学 | Preparation method of nanometer starch-based flocculating agent with heavy metal trapping effect |
-
2015
- 2015-11-13 CN CN201510780227.7A patent/CN105417667B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003012017A1 (en) * | 2001-08-03 | 2003-02-13 | Peter Morton | Compositions for removing metal ions from aqueous process solutions and methods of use thereof |
| CN101885572A (en) * | 2010-06-25 | 2010-11-17 | 江苏江达生态科技有限公司 | Environmentally-friendly eluent for treating heavy metal contaminated soil and sludge |
| CN103466775A (en) * | 2013-09-27 | 2013-12-25 | 广西博世科环保科技股份有限公司 | Method for preparing heavy metal ion catching agent |
| CN104761680A (en) * | 2015-03-19 | 2015-07-08 | 东北师范大学 | Preparation method of nanometer starch-based flocculating agent with heavy metal trapping effect |
Non-Patent Citations (1)
| Title |
|---|
| 表面活性剂强化EDTA络合洗脱污灌土壤中重金属的试验研究;蒋煜峰等;《农业环境科学学报》;20060131;第25卷(第1期);第119-123页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105417667A (en) | 2016-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103864247B (en) | PCB (Printed Circuit Board) copper-containing wastewater treatment method with autocatalytic oxidation as core | |
| CN103466775B (en) | Method for preparing heavy metal ion catching agent | |
| CN103663663B (en) | High efficiency composition heavy metal chelant | |
| CN104445718B (en) | A kind of gold mine cyaniding waste residue leaching liquor administering method | |
| CN104045191B (en) | A kind of Treatment of cyanogen-contained wastewater | |
| CN102259993A (en) | Water treatment method utilizing complex-ferrous-activated persulfate oxidation | |
| CN104193054B (en) | A kind of gold mine cyanide wastewater administering method | |
| CN104030505B (en) | A kind of nonferrous metal mine flotation waste water treatment process | |
| CN101314492A (en) | Method for preparing novel remover for heavy metal ion and application thereof | |
| CN106976949A (en) | A kind of oxidation treatment method of Leachate site biological treatment water outlet | |
| CN104558324A (en) | Resource recycling application of heavy metals in wastewater | |
| CN104445751A (en) | Method for recycling and treating cyanide waste water | |
| Fei et al. | Efficient removal of EDTA-chelated Cu (II) by zero-valent iron and peroxydisulfate: Mutual activation process | |
| CN104016525A (en) | Metal mine mineral separation wastewater treatment method | |
| CN113772802B (en) | Method for degrading bisphenol A in water by using manganese oxide modified copper-manganese spinel | |
| CN101337732B (en) | Method for reducing dissolution of noxious heavy metal components | |
| CN104529013A (en) | Cyanide-containing waste water recovery and treatment method | |
| CN107381892A (en) | A kind of handling process of high-concentration ammonia nitrogenous wastewater | |
| CN105417667B (en) | A kind of Compositional type heavy metal chelating agent and preparation method thereof | |
| CN103803666A (en) | Heavy metal wastewater treatment disinfectant | |
| CN105254075B (en) | A kind of heavy metal chelating agent and for sintering desulfuration waste water remove thallium method | |
| CN104230122B (en) | Gold mine cyaniding waste residue leaching liquor processing method | |
| CN104261625B (en) | Cyaniding waste residue leaching liquor processing method | |
| CN105000720A (en) | Method for treating cyaniding tailing slurry in gold smelting industry | |
| CN104250053B (en) | A kind of process is containing the method for ammonia nitrogen mutual-amido two polyaniline factory effluent |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |