Effect of bamboo biochar on pentachlorophenol leachability and bioavailability in agricultural soil

In this study, bamboo biochar (BBC) was proposed as a practical carbonaceous material for the in situ remediation of organic pollutants. Column leaching experiments were used to evaluate the leachability of pentachlorophenol (PCP) in soil amended with BBC (0, 1, 2, and 5%; w/w). After leaching, the...

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Bibliographic Details
Published in:The Science of the total environment 2012-01, Vol.414, p.727-731
Main Authors: Xu, Tao, Lou, Liping, Luo, Ling, Cao, Rukun, Duan, Dechao, Chen, Yingxu
Format: Article
Language:English
Subjects:
Agricultural soil
Agriculture
Analysis of Variance
Bamboo biochar
Bioavailbility
Biological Availability
Charcoal - chemistry
Environmental Restoration and Remediation - methods
Leachability
Pentachlorophenol
Pentachlorophenol - analysis
Pentachlorophenol - pharmacokinetics
Regression Analysis
Sasa
Soil Pollutants - analysis
Soil Pollutants - pharmacokinetics
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Summary:In this study, bamboo biochar (BBC) was proposed as a practical carbonaceous material for the in situ remediation of organic pollutants. Column leaching experiments were used to evaluate the leachability of pentachlorophenol (PCP) in soil amended with BBC (0, 1, 2, and 5%; w/w). After leaching, the residual bioavailability of PCP in the soil column was determined by chemical extraction methods (methanol and distilled water). The results showed that compared to the control, the addition of 5% BBC decreased the cumulative leach-loss content of PCP by 42%, and also reduced PCP concentrations by 56 and 65% in methanol and distilled water extracts, respectively. Moreover, the linear leaching curves for the 10-h leaching time indicated that the rapid release process may be dependent on the continuous diffusion and partition mechanism. Regression analyses showed a significant (p
ISSN:0048-9697
1879-1026
DOI:10.1016/j.scitotenv.2011.11.005