生物表面活性剂对黄土中菲的增溶作用  

Solubility Enhancements of Phenanthrene by Biosurfactant in Loess Soil

作　　者：童丹[1] 吴应琴[1] 郭宏栋[1] 李莉[1] 陈慧[1] 

机构地区：[1]西北师范大学化学化工学院,甘肃兰州730070

出　　处：《安徽农业科学》2007年第16期4911-4912,4938,共3页Journal of Anhui Agricultural Sciences

基　　金：甘肃省自然科学基金资助项目(3ZS041-A25-027);甘肃省教育厅科研基金项目(0501-07)

摘　　要：研究了生物表面活性剂皂角苷(Saponin)和两种常见的化学合成非离子表面活性剂TritonX-100和Brij35对吸附在黄土上菲的增溶萃取作用。试验表明皂角苷对菲有明显的增溶作用,水溶液中菲的表观溶解度与皂角苷浓度成线性增加关系。与化学合成非离子表面活性剂TritonX-100和Brij35相比,在水体系和水-土体系中皂角苷均有较高的质量增溶比(SR)和胶束假相和水相的分配系数(Kmc)。同时发现浓度较低(小于CMC)时,皂角苷在黄土上的吸附很小。结果表明生物表面活性剂有望替代化学合成表面活性剂用于污染土壤的修复。The solubilization and extraction of phenanthrene from loess soil by a bio-surfactant saponin were investigated with comparing of two conventional nonionic surfactant TritonX-100 and Brij35. The result showed that saponin had the ability of solubilization for phenanthrene with higher solubilization ratio （SR） and the micelle-phase/aqueous phase partition coeffcient （Kmc） than those of Triton X-100 and Brij35 in both of aqueous solution and water/soil system. There was a linearly proportional relationship between the consolidation of saponin and the apparent solubility of phenanthrene in aqueous solution, The result provided a reference to the use of saponin for remediation of contaminated soils in engineered surfactant-enhanced washing.

关 键 词：皂角苷 菲 增溶作用 黄土 生物表面活性剂 

分 类 号：X131.3[环境科学与工程—环境科学]