THE EFFECT OF AN ANIONIC SURFACTANT ON THE MOBILIZATION AND BIODEGRADATION OF PAHS IN A CREOSOTE-CONTAMINATED SOIL

被引:18
作者
DESCHENES, L
LAFRANCE, P
VILLENEUVE, JP
SAMSON, R
机构
[1] INRS-Eau, Universitê du Quêbec, Sainte-Foy, QC, G1V 4C7, 2800 rue Einstein
[2] Department of Chemical Engineering, BIOPRO Research Center, Ecole Polytechnique, University of Montreal, Montréal, QC, H3C 3A7, CP 6079, suce. Centre-ville
来源
HYDROLOGICAL SCIENCES JOURNAL-JOURNAL DES SCIENCES HYDROLOGIQUES | 1995年 / 40卷 / 04期
基金
加拿大自然科学与工程研究理事会;
关键词
D O I
10.1080/02626669509491433
中图分类号
TV21 [水资源调查与水利规划];
学科分类号
081501 ;
摘要
The mobilization and biodegradation of 13 PAHs sorbed in a creosote-contaminated soil were assessed in the presence of sodium dodecyl sulphate(SDS). In a mobilization experiment, the soil was mixed with SDS solutions (0.005 to 1% w/v) and the PAH concentrations in the aqueous phase were determined. In a biodegradation experiment, soil residual PAH concentrations were monitored during 45 weeks in the presence of 10, 100 and 500 mg kg(-1) SDS. The SDS was effective in mobilizing three- and four-ring PAHs. Increasing SDS concentration resulted in the mobilization of very low water-soluble five- and six-ring PAHs. The SDS (100 and 500 mg kg(-1)) significantly decreased the biodegradation of fluorene, phenanthrene and all of the four-ring PAHs. PAHs with more than four rings were not biodegraded. The surfactant [alpha(14)C]SDS was readily biodegraded. Even if SDS may be efficient in mobilizing PAHs in soil pore water or groundwater, it will not improve PAH biodegradation. Such a result must be considered when using anionic surfactants in the perspective of biological treatment of PAHs.
引用
收藏
页码:471 / 484
页数:14
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