Recovery of aniline from wastewater by solvent extraction enhanced with salting-out effect

被引：0
|
作者：
Li Changhai [1 ,2 ]
机构：
[1] Binzhou Univ, Binzhou 256603, Peoples R China
[2] Changchun Univ Technol, Dept Chem Engn, Changchun, Peoples R China
来源：
2010 4TH INTERNATIONAL CONFERENCE ON BIOINFORMATICS AND BIOMEDICAL ENGINEERING (ICBBE 2010) | 2010年
关键词：
Anilin; Nitrobenzene; extracting; Salting-out; LIQUID-PHASE MICROEXTRACTION; 2,4,6-TRINITROTOLUENE TNT; SOLUBILITY;
D O I：
暂无
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
摘要：
Nitrobenzene extraction enhanced by salting-out effect was employed to recover aniline from wastewater at 25.. The batchwise experiments were conducted to elucidate the influence of various operating variables on the extracting performance, including acidity of wastewater, initial aniline concentration, ratios of solvent versus wastewater, extraction stages, concentrations and species of inorganic salts, such as NaCl, KCl, Na2SO4, CaCl2 and K2SO4. High pH values and volume ratios of nitrobenzene/ wastewater was more suitable for recovery of aniline. Besides, the recovery of aniline was significantly elevated with increasing concentrations of salts, whose promoting effects were in the following order: NaCl > Na2SO4 > K2SO4 > CaCl2 > KCl on the weight basis of wastewater. It is remarkable that aniline in wastewater would be almost completely recovered by sequential five stages nitrobenzene extraction, promoted continuously by salting -out effect.
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页数：4
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