文献类型：期刊文献

英文题名：Efficient extraction of phenol from wastewater by ionic micro-emulsion method: Anionic and cationic

作者：Zhang, Chaobo[1];Yang, Xiaoyong[1];Dai, Jian[1];Liu, Wenxia[1];Yang, Hang[1];Bai, Zhishan[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, State Environm Protect Key Lab Environm Risk Asses, Shanghai 200237, Peoples R China

年份：2023

卷号：58

起止页码：137

外文期刊名：CHINESE JOURNAL OF CHEMICAL ENGINEERING

收录：;EI(收录号：20232114115444);WOS:【SCI-EXPANDED(收录号:WOS:001000819100001)】；

基金：Acknowledgements This research was sponsored by the National Natural Science Foundation of China (22225804) , Shanghai Sailing Program, China (21YF1409500) , the National Natural Science Foundation of China (22078102) and the Education and Scientific Research Projects of Shanghai, China (19DZ1208201) , for which the authors express their appreciation.

语种：英文

外文关键词：Phenol-containing wastewater; Phenol recovery; Microemulsion extraction; Ionic microemulsion; Mechanism analysis

摘要：Phenolic wastewater is one of the priorities in the field of wastewater treatment, which poses a serious threat to the human health and nature environment. In this paper, cationic cetyltrimethylammonium bromide (CTAB) and anionic sodium oleate (NaOL) microemulsions were utilized to extract phenol from the wastewater. The optimal extraction factors were investigated by exploring the effects of microemulsion composition ratio and extraction conditions on the phenol extraction performance. Furthermore, the enhanced extraction mechanism of phenol by cations microemulsions is illustrated by studying the extraction process of cationic and anionic microemulsions in the extraction of phenol. The optimum components were obtained: surfactant concentration of 0.2 mol center dot L-1, isoamyl alcohol volume of 30%, internal aqueous phase concentration of CTAB microemulsion of 0.05 mol center dot L-1, and internal aqueous phase concentration of NaOL microemulsion of 0.09 mol center dot L-1. The extraction efficiencies were 96.44% and 82.0% when using CTAB and NaOL microemulsions under optimal conditions (water-emulsion ratio of 5, contact time of 9 min, extraction temperature of 298.15 K, and pH of 9), confirming the enhanced extraction of phenol by CTAB cationic microemulsion. It was analyzed that the enhanced extraction of CTAB microemulsion was due to the electrostatic adsorption of cations with phenol root ions.(c) 2022 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights reserved.