Bioremediation of Pb-contaminated soil by incubating with Phanerochaete chrysosporium and straw

被引:85
作者
Huang, Dan-Lian
Zeng, Guang-Ming [1 ]
Jiang, Xiao-Yun
Feng, Chong-Ling
Yu, Hong-Yan
Huang, Guo-He
Liu, Hong-Liang
机构
[1] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China
[2] Univ Regina, Fac Engn, Regina, SK S4S 0A2, Canada
基金
中国国家自然科学基金;
关键词
P; chrysosporium; inoculation; bioremediation; Pb-contaminated soil;
D O I
10.1016/j.jhazmat.2005.11.021
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The bioremediation of the simulated lead (Pb)-contaminated soils by incubating with Phanerochaete chrysosporium and straw was studied at laboratory-scale. The soil pH, Pb concentration, soil microbial biomass, microbial metabolic quotient, microbial quotient and microbial biomass C-to-N ratios were monitored. The above indicators were to study the stress of Ph on soil and the microbial effects during the bioremediation process. It was found that the soils treated with P. chrysosporium and straw showed a much lower concentration of soluble-exchangeable Pb, lower metabolic quotient and biomass C-to-N ratios (0 mg kg(-1) dry weight soil, 1-9 mg CO2-C mg(-1) biomass carbon and 4.9 on day 60, respectively) and higher microbial biomass and microbial quotient (2258 mg kg(-1) dry weight soil and 7.86% on day 60, respectively) compared with the controls. In addition, the kinetic parameters in the model based on logistic equation were calculated by the BIOLOG data. By analyzing those kinetic parameters some information on the metabolic capacity of the microbial community could be obtained. All the results indicated that the bioavailability of Pb in contaminated soil was reduced so that the potential stress of Pb was alleviated, and also showed that the soil microbial effects and the metabolic capacity of microbial community were improved. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:268 / 276
页数:9
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