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

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...

Full description

Saved in:
Bibliographic Details
Published in:Journal of hazardous materials 2006-06, Vol.134 (1), p.268-276
Main Authors: Huang, Dan-Lian, Zeng, Guang-Ming, Jiang, Xiao-Yun, Feng, Chong-Ling, Yu, Hong-Yan, Huang, Guo-He, Liu, Hong-Liang
Format: Article
Language:English
Subjects:
Applied sciences
Bioremediation
Color
Decontamination. Miscellaneous
Exact sciences and technology
Hydrogen-Ion Concentration
Inoculation
Kinetics
Lead - metabolism
P. chrysosporium
Pb-contaminated soil
Phanerochaete - metabolism
Phanerochaete chrysosporium
Plant Shoots
Pollution
Soil and sediments pollution
Soil Microbiology
Soil Pollutants
Triticum
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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 Pb 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 CO 2-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.
ISSN:0304-3894
1873-3336
DOI:10.1016/j.jhazmat.2005.11.021