[Treatment of dilute solution anilines-containing with displacement by extraction].
It was found that the biodegradability (indicated by BOD5/CODCr value of water solution containing anilire or chloroaniline declined with the increasing of their concentration. In order to bio-treat such water, decrease of the solute's concentration was necessary. Based on the research of organic solvents' and complexing agent's biodegradability, a series of extraction experiments were conducted for aniline and m-chloroaniline with complexing agent or physical solvent. The factors influencing the distribution ratio were discussed. The BOD5/CODCr value of raffinates showed that the raffinate can be treated by biological degradation without dilution if suitable solvent was choosed. It was proved that displacement by extraction had great potentiality for treating wastewater containing non-biodegradable organic contaminant.
Feng
X
X
State Key Laborory of Solvent Extraction, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China. fengxd@mail.cic.edu.tsinghua.edu.cn
Lin
Y
Y
Qu
F
F
Dai
Y
Y
D000814:Aniline Compounds / Q000302:isolation & purification*; D001673:Biodegradation, Environmental; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification
D000814:Aniline Compounds; D014874:Water Pollutants, Chemical