CN101249385A - Method for purifying ampholytic surface active agent with electric dialyze desalinisation - Google Patents
Method for purifying ampholytic surface active agent with electric dialyze desalinisation Download PDFInfo
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- CN101249385A CN101249385A CNA2007101906047A CN200710190604A CN101249385A CN 101249385 A CN101249385 A CN 101249385A CN A2007101906047 A CNA2007101906047 A CN A2007101906047A CN 200710190604 A CN200710190604 A CN 200710190604A CN 101249385 A CN101249385 A CN 101249385A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A20/124—Water desalination
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Abstract
The invention provides a method for purifying an amphoteric surface active agent by using electric dialysis and desalting, and belongs to the technology field of membrane separation. The invention makes use of the characteristic that the amphoteric surface active agent does not move towards two poles when the amphoteric surface active agent is within the isoelectric point scope; through electrodialysis treatment, the small molecules of inorganic salt enters a thick chamber and amphoteric surface active agent molecules stay in a thin chamber so that the inorganic salt is separated and removed, thus purifying the amphoteric surface active agent. The applied amphoteric surface active agent has the structure of amino acid or lycine or the imidazoline-type structure. The invention can effectively remove the inorganic salt in the amphoteric surface active agent without phase transformation or pollution during separation by consuming low energy at low cost, which solves the problem that the development of the amphoteric surface active agent is restricted as the inorganic salt is difficult to be purified, and provides an economic effective way for separation of the inorganic salt from the amphoteric surface active agent in production.
Description
Technical field
A kind of method with electrodialysis desalination purifying ampholytic surfactant belongs to the membrane separation technique field.The little molecule of inorganic salts in specifically a kind of amphoteric surfactant solution directed movement and selective permeation amberplex and method of separating under electric field action with amphoteric surfactant.
Background technology
There is the positive and negative charge-site (or dipole center) that can not be ionized simultaneously in amphoteric surfactant in a part, have low toxicity and low irritant, favorable biological degradability, effectively bactericidal properties and excellent compatibility.In synthetic amphoteric surfactant process, often inevitably produce the little molecule of inorganic salts, the negative effect that make that product viscosity is too high, degradation influences the amphoteric surfactant excellent properties under pH value instability or the chemical stability.Because dissolubility and the inorganic salts of amphoteric surfactant are very close, make its with inorganic electrolyte between separate very difficult.At present, also do not find the gratifying method of easy economy and separating effect to remove the little molecule of inorganic salts in the amphoteric surfactant.
The electrodialysis desalination technology has been widely used in desalinization and sewage disposal process, has easy and simple to handle, non-environmental-pollution, with low cost and be easy to realize advantages such as scale operation.Amphoteric surfactant electroneutral molecule with interior salt form when its isoelectric point exists, and neither anode moves in external electric field, does not also move to negative electrode.If in purified amphoteric surfactant isoelectric point scope, the amphoteric surfactant solution that will contain inorganic salts impurity is as light chamber liquid, as dense chamber initial soln, NaOH and sulfuric acid solution are respectively as cathode and anode chamber solution with sodium salt such as sodium chloride or sodium nitrate solution.Regulate light chamber flow and operating voltage and carry out electrodialysis, anion such as Cl in the liquid of then light chamber
-See through the migration of cavity block anode and enter dense chamber, and be subjected to anode membrane and stop and stay in the dense chamber; Cation such as Na in the liquid of light chamber
+See through anode membrane and after the cathode direction migration, also enter dense chamber, and be subjected to cavity block and stop and be trapped within the dense chamber; Do not stay light chamber and obviously migration can not take place under electric field action with the amphoteric surfactant that interior salt form exists, thereby with the inorganic salts separation removal and make amphoteric surfactant be able to purifying.Can make the amphoteric surfactant desalination that in electric dialyzator, circulates by the operating conditions such as pH value, light chamber flow and operating voltage of controlling light chamber amphoteric surfactant solution.Because there is not membrane pollution problem in the amphoteric surfactant good water solubility, thereby can carries out purifying with electrodialysis methods, the at present domestic research report that does not also have this respect.
Summary of the invention
The objective of the invention is characteristics at amphoteric surfactant, a kind of method with electrodialysis desalination purifying ampholytic surfactant has been proposed, this method can effectively remove the inorganic salts in the amphoteric surfactant, have the advantages that under normal temperature, no phase change conditions, to realize separating substances, and cost is low, pollution-free, energy consumption is low, has solved amphoteric surfactant limits its development because of the inorganic salts purification difficult problem to a certain extent.
Technical scheme of the present invention: a kind of method with electrodialysis purifying ampholytic surfactant, in purified amphoteric surfactant isoelectric point scope, the amphoteric surfactant solution (the quality percentage composition is no more than 35%) that will contain inorganic salts impurity (the quality percentage composition is no more than 15%) is as light chamber liquid, as dense chamber initial soln, concentration is the NaOH of 0.05mol/L and each 1L of sulfuric acid solution respectively as cathode and anode chamber solution with the sodium salt of 0.05mol/L such as sodium chloride or sodium nitrate solution 1L.Regulating light chamber flow is 10L/h～40L/h, is under the DC electric field effect of 8V～18V at operating voltage, and electrodialysis a period of time, the electrical conductivity for the treatment of light chamber liquid stops dialysis when no longer reducing.
The amphoteric surfactant that is purified has alkyl amino acid or betaine structure, has following general formula:
R wherein
1Representative has the alkyl of 8～22 carbon atoms or the alkylamide propyl of 11～25 carbon atoms, R
2, R
3And R
4Represent identical or different each to have the alkyl of 1～3 carbon atom, M is carboxyl or sulfo group; Work as R
2Or R
3When wherein having at least one to be hydrogen atom, be alkyl amino acid type amphoteric surfactant.
Or the amphoteric surfactant that is purified has the imidazoline type structure, and following general formula is arranged:
R wherein
1Represent the alkyl or alkenyl of 7～21 carbon atoms, R
2And R
3Represent the identical or different alkylidene with 1～3 carbon atom, X represents hydrogen atom or R
3COO
-Group.
Beneficial effect of the present invention:
(1) the present invention can effectively remove the inorganic salts in the amphoteric surfactant, solved the problem that amphoteric surfactant is covered its excellent properties because of the inorganic salts purification difficult and limited its development to a certain extent, and for amphoteric surfactant aborning the separation of inorganic salts cost-effective approach is provided.
(2) electrodialysis purifying ampholytic surfactant have simple to operate, separation process do not have phase transformation, pollution-free, cost is low, energy consumption is low and be easy to realize advantages such as scale operation.
Description of drawings
Fig. 1 electrodialysis plant work schematic diagram.Wherein: 1, electrode; 2, membrane stack (,
Light chamber, mouthful dense chamber); 3, light chamber storage tank; 4, cathode chamber storage tank; 5, anode chamber's storage tank; 6, dense chamber storage tank; 7, pump; 8, flowmeter.
The specific embodiment
Below in conjunction with Fig. 1 the specific embodiment of the present invention is described.
Electric dialyzator used in the present invention is assembled by 50 pairs of anion and cation exchange membranes, and film is sulfonic acid type polystyrene and quaternary amine type polystyrene heterogeneous ion-exchange membrane, and the effective film area of monofilm is 210mm * 65mm.
Describe by following several groups of embodiment:
The electrodialysis desalination of embodiment 1 alpha-decyl betaine solution
The alpha-decyl betaine solution adjust pH to 7.5 that will contain NaCl.Recording wherein, the quality percentage composition of alpha-decyl betaine and inorganic salts is respectively 10% and 3%.The above-mentioned solution of 1L is put into light chamber storage tank, with the NaCl solution of 1L 0.05mol/L as dense chamber initial soln, respectively with 1L concentration be the NaOH of 0.05mol/L and sulfuric acid solution each as cathode and anode chamber solution, at the 10V operating voltage, light chamber flow is under the operating condition of 20L/h, to the desalination that circulates of alpha-decyl betaine solution.Dialysis finished when the electrical conductivity for the treatment of light chamber liquid no longer reduced.Salt rejection rate is 97%, and the rate of recovery of alpha-decyl betaine is 82.7%.
The electrodialysis desalination of embodiment 2 dodecyl azochlorosulfonate propyl lycine solution
The dodecyl azochlorosulfonate propyl lycine solution adjust pH to 7.2 that will contain unknown inorganic salts.Recording wherein, the quality percentage composition of dodecyl azochlorosulfonate propyl lycine and inorganic salts is respectively 31% and 13%.The above-mentioned solution of 0.9L is added 0.1L water put into light chamber storage tank, with the NaCl solution of 1L 0.05mol/L as dense chamber initial soln, be the NaOH of 0.05mol/L and each 1L of sulfuric acid solution as cathode and anode chamber solution with concentration respectively, at the 14V operating voltage, light chamber flow is under the operating condition of 23L/h, to the desalination that circulates of dodecyl azochlorosulfonate propyl lycine solution.Dialysis finished when the electrical conductivity for the treatment of light chamber liquid no longer reduced.Salt rejection rate is 95%, and the rate of recovery of dodecyl azochlorosulfonate propyl lycine is 73.6%.
The electrodialysis desalination of embodiment 3 lauramide CAB solution
The lauramide CAB solution adjust pH to 6.5 that will contain unknown inorganic salts, recording wherein, the quality percentage composition of lauramide CAB and inorganic salts is respectively 5% and 1%.The above-mentioned solution of 1L is put into light chamber storage tank, with the NaNO of 1L 0.05mol/L
3Solution is as dense chamber initial soln, is the NaOH of 0.05mol/L and each 1L of sulfuric acid solution respectively as cathode and anode chamber solution with concentration, and at the 8V operating voltage, light chamber flow is under the operating condition of 25L/h, to the solution desalination that circulates.Dialysis finished when the electrical conductivity for the treatment of light chamber liquid no longer reduced.Salt rejection rate is 97%, and the rate of recovery of lauramide CAB is 78.2%.
The electrodialysis desalination of embodiment 4 palmitamide propyl group azochlorosulfonate propyl lycine solution
The palmitamide propyl group azochlorosulfonate propyl lycine solution adjust pH to 7.0 that will contain unknown inorganic salts.Recording wherein, the quality percentage composition of palmitamide propyl group azochlorosulfonate propyl lycine and inorganic salts is respectively 17% and 5.5%.The above-mentioned solution of 1L is put into light chamber storage tank, with the NaNO of 0.05mol/L
3Solution 1L is as dense chamber initial soln, be the NaOH of 0.05mol/L and each 1L of sulfuric acid solution respectively as cathode and anode chamber solution with concentration, at the 10V operating voltage, light chamber flow is under the operating condition of 35L/h, to the desalination that circulates of palmitamide propyl group azochlorosulfonate propyl lycine solution.Dialysis finished when the electrical conductivity for the treatment of light chamber liquid no longer reduced.Salt rejection rate is 97%, and the rate of recovery of palmitamide propyl group azochlorosulfonate propyl lycine is 85.3%.
The electrodialysis desalination of embodiment 5 2-undecyl-N-carboxymethyl-N-(2-ethoxy) imidazoline solutions
2-undecyl-N-carboxymethyl-N-(2-ethoxy) imidazoline solutions adjust pH to 7.0 that will contain unknown inorganic salts.Recording wherein, the quality percentage composition of 2-undecyl-N-carboxymethyl-N-(2-ethoxy) imidazoline and inorganic salts is respectively 31% and 8.0%.The above-mentioned solution of 1L is put into light chamber storage tank, with the NaCl solution 1L of 0.05mol/L as dense chamber initial soln, concentration is the NaOH of 0.05mol/L and each 1L of sulfuric acid solution respectively as cathode and anode chamber solution, at the 18V operating voltage, light chamber flow is under the operating condition of 25L/h, to the desalination that circulates of 2-undecyl-N-carboxymethyl-N-(2-ethoxy) imidazoline solutions.Dialysis finished when the electrical conductivity for the treatment of light chamber liquid no longer reduced.Salt rejection rate is 95%, and the rate of recovery of 2-undecyl-N-carboxymethyl-N-(2-ethoxy) imidazoline is 76.4%.
The electrodialysis desalination of embodiment 6 N-dodecyl-Beta-alanine sodium solution
N-dodecyl-Beta-alanine sodium solution the adjust pH to 7.0 that will contain unknown inorganic salts.Recording wherein, the quality percentage composition of N-dodecyl-Beta-alanine sodium and inorganic salts is respectively 30% and 5.6%.The above-mentioned solution of 1L is put into light chamber storage tank, with the NaNO of 1L 0.05mol/L
3Solution is as dense chamber initial soln, concentration is the NaOH of 0.05mol/L and each 1L of sulfuric acid solution respectively as cathode and anode chamber solution, at the 18V operating voltage, light chamber flow is under the operating condition of 20L/h, to the desalination that circulates of N-dodecyl-Beta-alanine sodium solution.Dialysis finished when the electrical conductivity for the treatment of light chamber liquid no longer reduced.Salt rejection rate is 95%, and the rate of recovery of N-dodecyl-Beta-alanine sodium is 76.4%.
Claims (4)
1, a kind of method with electrodialysis desalination purifying ampholytic surfactant, it is characterized in that in purified amphoteric surfactant isoelectric point scope, the amphoteric surfactant solution that will contain inorganic salts impurity is as light chamber liquid, the quality percentage composition of inorganic salts is no more than 15% in the liquid of light chamber, the quality percentage composition of surfactant is no more than 35%, with the sodium salt solution 1L of 0.05mol/L as dense chamber initial soln, concentration is the NaOH of 0.05mol/L and each 1L of sulfuric acid solution respectively as cloudy, anode chamber's solution, regulating light chamber flow is 10L/h～40L/h, be to carry out electrodialysis desalination under the DC electric field effect of 8V～18V at operating voltage, dialysis finished when the electrical conductivity for the treatment of light chamber liquid no longer reduced.
2,, it is characterized in that the used sodium salt solution in dense chamber is sodium chloride or sodium nitrate according to the method for the described electrodialysis desalination purifying ampholytic of claim 1 surfactant.
3, the application of the described electrodialysis desalination purifying ampholytic of claim 1 surface-active agent method is characterized in that the amphoteric surfactant that is purified has alkyl amino acid or betaine structure, has following general formula:
R wherein
1Representative has the alkyl of 8～22 carbon atoms or the alkylamide propyl of 11～25 carbon atoms, R
2, R
3And R
4Represent identical or different each to have the alkyl of 1～3 carbon atom, M is carboxyl or sulfo group; Work as R
2Or R
3When wherein having at least one to be hydrogen atom, be alkyl amino acid type amphoteric surfactant.
4, the application of the described electrodialysis desalination purifying ampholytic of claim 1 surface-active agent method is characterized in that the amphoteric surfactant that this process is fit to be purified equally has the imidazoline type structure, has following general formula:
R wherein
1Represent the alkyl or alkenyl of 7～21 carbon atoms, R
2And R
3Represent the identical or different alkylidene with 1～3 carbon atom, X represents hydrogen atom or R
3The COO-group.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830817A (en) * | 2009-03-12 | 2010-09-15 | 刘驳谦 | Method for continuous multistage membrane separation of trimethylamine ethylene colactone from salt compound |
| CN103553084A (en) * | 2013-10-24 | 2014-02-05 | 石家庄凤山化工有限公司 | Method and device for treating converted gas in production of sodium nitrate |
| CN104043333A (en) * | 2013-03-15 | 2014-09-17 | 铼钻科技股份有限公司 | Electrodialysis device and electrodialysis method using the same |
| CN104722209A (en) * | 2013-12-18 | 2015-06-24 | 江南大学 | Ampholytic surfactant electrodialysis desalination purification method |
| CN108654389A (en) * | 2017-03-31 | 2018-10-16 | 财团法人工业技术研究院 | Electrodialysis module and electrodialysis system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1525692A (en) * | 1974-09-06 | 1978-09-20 | Albright & Wilson | Surfactant purification by an electrolytic method |
| FR2732689B1 (en) * | 1995-04-05 | 1997-05-09 | Rhone Poulenc Chimie | PROCESS FOR THE PURIFICATION OF AMPHOTERATED SURFACTANTS BY ELECTRODIALYSIS |
| DE19838425A1 (en) * | 1998-08-24 | 2000-03-02 | Degussa | Process for the separation of polyfunctional alcohols from water-soluble salts from aqueous systems |
| DE19952961A1 (en) * | 1999-11-03 | 2001-05-10 | Basf Ag | Process for the purification of amino acid solutions by electrodialysis |
| JP5055652B2 (en) * | 2000-08-11 | 2012-10-24 | ダイキン工業株式会社 | Method for recovering fluorine-containing surfactant |
-
2007
- 2007-11-27 CN CN2007101906047A patent/CN101249385B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830817A (en) * | 2009-03-12 | 2010-09-15 | 刘驳谦 | Method for continuous multistage membrane separation of trimethylamine ethylene colactone from salt compound |
| CN104043333A (en) * | 2013-03-15 | 2014-09-17 | 铼钻科技股份有限公司 | Electrodialysis device and electrodialysis method using the same |
| CN103553084A (en) * | 2013-10-24 | 2014-02-05 | 石家庄凤山化工有限公司 | Method and device for treating converted gas in production of sodium nitrate |
| CN103553084B (en) * | 2013-10-24 | 2016-01-06 | 石家庄凤山化工有限公司 | SODIUMNITRATE transforms the method and apparatus of gas disposal in producing |
| CN104722209A (en) * | 2013-12-18 | 2015-06-24 | 江南大学 | Ampholytic surfactant electrodialysis desalination purification method |
| CN108654389A (en) * | 2017-03-31 | 2018-10-16 | 财团法人工业技术研究院 | Electrodialysis module and electrodialysis system |
| US10688438B2 (en) | 2017-03-31 | 2020-06-23 | Industrial Technology Research Institute | Electrodialysis module and electrodialysis system |
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| CN101249385B (en) | 2010-07-21 |
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