敌百虫萃取分离的研究

STUDIES ON EXTRACTION OF TRICHLORPHON

在考察敌百虫亲油性的基础上,本文对敌百虫稀溶液进行了溶剂萃取和络合萃取的研究.结果表明,由于敌百虫的亲油性一般,溶剂萃取分配系数较小,加入胺类络合剂提高了溶剂对敌百虫的萃取分配系数.本文还对影响敌百虫萃取的因素进行了讨论.比较溶剂萃取前后溶液的生物降解性。

Considering the hydrophobicity of trichlorphon, a series of extraction experiments were conducted for trichlorphon with complexing agent or physical solvent. The results illustrate that the distribution ratio of physical extraction is small because of trichlorphon's moderate hydrophobicity, adding complexing agent in physical solvent can improve the distribution ratio. The factors influencing the distribution ratio are discussed. The results illustrate that after physical extraction the COD value of solution decreases and its biodegradability increases. The raffinates can be treated by biological degradation without dilution. It is proved that the combination of displacement by extraction and biological treatment has great potentiality for treating wastewater containing non-biodegradable organic contaminant.