Equilibrium of Extraction of p-Aminobenzenesulfonic Acid by Aliquat 336  

作　　者：李振宇 秦炜 戴猷元 

出　　处：《Chinese Journal of Chemical Engineering》2002年第4期411-415,共5页中国化学工程学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China (No. 29836130).

摘　　要：p-Aminobenzenesulfonic acid was selected as a typical solute withamphoteric functional groups to be separated from dilute solution. Aquaternary ammonium chloride, Aliquat 336, was used as theextractant. The effects of pH, extractant concentration and diluenttypes on distribution coefficient, D, were investigated. Meanwhile,the ion exchange reaction for Aliquat 336 with p-aminobenzenesulfonicacid in the extraction process Was discussed. The description of Dwas proposed according to the mass action law.p-Aminobenzenesulfonic acid was selected as a typical solute with amphoteric functional groups to be separated from dilute solution.A quaternary ammonium chloride,Aliquat 336, was used as the extractant. The effects of pH, extractant concentration and diluent types on distribution coefficient,D,were investigated. Meanwhile,the ion exchange reaction for Aliquat 336 with p-aminobenzenesulfonic acid in the extraction process was discussed.The description of D was proposed according to the mass action law.The results show that the D in non-polar diluents,kerosene and CCl4,is larger than that in polar diluent,1-octanol and chloroform.The sodium sulfate in aqueous phase affects D strongly due to exchange of sulfate ions with Aliquat 336. Finally,the removal of 4,4′-diaminostibene-2,2′-disulfonic acid (DSD) acid), an amino sulfonic acid,was successfully achieved from wastewater by the extraction with Aliquat 336.

关 键 词：p-aminobenzenesulfonic acid complexation extraction Aliquat 336 

分 类 号：TQ021[化学工程]