Method for trapping organic compound in aqueous solution

A technology of organic compounds and aqueous solutions, applied in the fields of magnetic field/electric field water/sewage treatment, etc., can solve the problems of time-consuming, flammable solvent, toxicity, etc., to avoid low cost, avoid flammable and toxic organic solvents, and easy to operate. Effect

Inactive Publication Date: 2010-09-08
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the solvents used in liquid-liquid extraction are flammable and / or toxic, the cost of solid-phase extraction is relatively high, and the phase separation of cloud point extraction requires heating and time-consuming

Method used

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  • Method for trapping organic compound in aqueous solution
  • Method for trapping organic compound in aqueous solution
  • Method for trapping organic compound in aqueous solution

Examples

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Effect test

Embodiment 1

[0033] Embodiment one: the NaCl of 1mol / L is used as leading electrolytic solution, the sodium gluconate (GANa) of 500mmol / L is as the sodium dodecyl sulfate (SDS) solution of tailing electrolytic solution, 100mmol / L and contains two kinds of organic aromatic The aqueous solutions of 1 mg / L of ketone compounds (phenylpentanone and phenylhexanone) are put into the electrolytic cell made of glass, and the arrangement order of each solution in the electrolytic cell is as follows (the two solutions connected by short lines are in contact with each other):

[0034] NaCl (1mol / L)-aromatic ketone aqueous solution (each 1mg / L)-SDS (100mmol / L)-GANa (500mmol / L) The anode of the DC power supply of the electrolytic cell is in contact with the NaCl solution and the cathode is in contact with the GANa solution. Apply 300V DC voltage to drive the SDS aggregate until almost all the aromatic ketone aqueous solution passes through, and quickly take out the part of the solution rich in SDS aggreg...

Embodiment 2

[0036] Embodiment two: the NaCl of 1mol / L is used as the leading electrolyte solution, the β-alanine of 500mmol / L as the trailing electrolyte solution, the cetyltrimethylammonium chloride (CTAC) solution of 100mmol / L and containing two Each 1mg / L aqueous solution of a kind of naphthyl alcohol compound (naphthalene methanol and naphthyl alcohol) is put into the electrolytic cell of glass material, and the order of arrangement of each solution in the electrolytic cell is as follows (two kinds of solutions connected by short lines are in contact with each other):

[0037] The anode of NaCl (1mol / L)-naphthyl alcohol aqueous solution (each 1mg / L)-CTAC (100mmol / L)-β-alanine (500mmol / L) electrolytic cell DC power supply contacts with β-alanine solution and the negative electrode Contact with NaCl solution. Apply a DC voltage of 300V to drive the CTAC aggregates until almost all the naphthyl alcohol aqueous solution passes through, and quickly take out the solution part rich in CTAC a...

Embodiment 3

[0039] Embodiment three: the sodium dodecylbenzene sulfonate (SDBS) solution that uses the NaCl of 1mol / L as leading electrolytic solution, the sodium gluconate (GANa) of 500mmol / L as trailing electrolytic solution, 100mmol / L and contains two kinds Aqueous solutions of 1 mg / L each of aromatic ketone compounds (phenylpentanone and phenylhexanone) were put into a glass electrolytic cell, and the order of arrangement of each solution in the electrolytic cell was as follows (the two solutions connected by short lines contact each other):

[0040] NaCl (1mol / L)-aromatic ketone aqueous solution (each 1mg / L)-SDBS (100mmol / L)-GANa (500mmol / L) The cathode of the DC power supply of the electrolytic cell is in contact with the GANa solution and the anode is in contact with the NaCl solution. Apply 300V DC voltage to drive the SDBS aggregate until almost all the aromatic ketone aqueous solution passes through, and quickly take out the solution part rich in SDBS aggregate. Turn off the pow...

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Abstract

The invention relates to a method for trapping an organic compound in aqueous solution, which comprises the following steps of: taking inert metal materials as electrodes; adding precursor electrolyte aqueous solution, aqueous solution containing an organic matter to be trapped, ionic surfactant aqueous solution and following electrolyte aqueous solution into an electrolytic bath in turn, wherein the mobility of the ionic surfactant aggregate is less than that of the precursor ions in the precursor electrolyte and more than that of the following ions in the following electrolyte aqueous solution and the isotachophoresis condition is met as required; applying the DC voltage of 10V to 30kV; and when the ionic surfactant aggregate migrates to pass through the aqueous solution containing the organic matter to be trapped under the driving of an electric field, rapidly taking the surfactant-enriched solution out, namely trapping the organic compound in the aqueous solution. The method for trapping the organic compound in the aqueous solution has the application characteristics of avoiding combustible and toxic organic solvent, along with simple and convenient operation and low cost.

Description

technical field [0001] The invention relates to a method for trapping organic compounds in aqueous solution, in particular to a method for trapping organic compounds in aqueous solution by using ionic surfactant under electric field. Background technique [0002] During the pretreatment of analytical samples, the purification of chemical products, the preparation of biochemical reagents and the treatment of organic-contaminated wastewater, it is often necessary to capture organic compounds from aqueous solutions. The capture of organic matter in aqueous solution is beneficial to the enrichment of organic analytes in water samples, the refinement of chemical products and biochemical reagents, and the purification of organic-contaminated wastewater. Methods for trapping organic compounds in aqueous solutions reported in the literature and in practical applications include liquid-liquid extraction, solid-phase extraction, cloud point extraction, membrane filtration, and adsorpt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/48
Inventor 王田霖吕隽覃业欣
Owner SHANGHAI UNIV
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