摘要
采用测定溶剂饱和溶液 BOD5和 COD的方法对混合溶剂 P2 0 4 (二 - ( 2 -乙基己基 )磷酸 ) -煤油的生物降解性进行了研究 .结果表明 ,不同浓度的 P2 0 4 (煤油 )均可降解 .当溶剂中 P2 0 4的浓度小于 70 %时 ,平衡水相的 COD及 BOD5 与初始溶剂中P2 0 4对煤油的体积比成正比 ;当 P2 0 4的浓度大于 70 %时 ,平衡水相的 COD及 BOD5基本保持不变 .同时 ,建立了 P2 0 4 (煤油 )平衡水相中 P2 0 4的浓度的表达式 ,对研究混合溶剂的生物降解性具有一定的指导意义 .
In this article,the study on biological degradability of mixture of P204 (di(2 ethylhexyl)phosphate acid and kerosene is conducted by measureing BOD 5 and COD of their water saturation.The results show that the mixture of P204 and kerosene by different volume ratio are biological degradable.COD and BOD 5 of the equilibrium aqueous phase are proported with the initial volume ratio of P204 and kerosene when the initial concentration of P204 is lower than 70%. However,the values have little change when the initial concentration is greater than 70%.The formula of P204 concentration in equilibrium aqueous phase is proposed which is important to the extraction displacement technology.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2000年第5期74-76,共3页
Environmental Science
基金
国家"九五"科技攻关项目! ( 96- 90 9- 0 5- 0 1 - 0 3)
关键词
磷酸
萃取
生物降解性
P204-煤油萃取剂
废水
di(2 ethylhexyl)phosphate acid
extraction with complexation
biological degradability
extraction displacement
