期刊
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
卷 162, 期 1-3, 页码 1-14出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0927-7757(99)00217-4
关键词
PAH; pyrene; biodegradation; solubilization; soil clean-up; surfactant combinations
In a series of experiments with soil samples of contaminated sites we investigated the effect of special surfactant combinations and other additives on the kinetics and extent of solubilization and degradation of PAH. Biodegradation tests showed a positive effect of adding surfactant combinations T10 and T15. The effect was more pronounced when samples exhibited low degradation effectivity without surfactants. Addition of surfactants counterbalanced the dependence of bioavailability of the individual PAH compounds on their solubility in pure water. Changing the composition of surfactant combinations different tendencies were observed for the extent of solubilization and degradation, i.e. very high concentrations of PAH in the liquid phase may have toxic effects on the soil microflora. However, addition of a sorbent had the most remarkable effect on residual pyrene concentration in a sandy soil, whereby the contamination was transferred to the sorbent phase. Sorption to the sorptive phase and solubilization are substantially faster processes than degradation. (C) 2000 Elsevier Science B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据