Tenax extraction for exploring rate-limiting factors in methyl-β-cyclodextrin enhanced anaerobic biodegradation of PAHs under denitrifying conditions in a red paddy...
Publication Date
2014-01-15Author
Sun, Mingming
Ye, Mao
Hu, Feng
Li, Huixin
Teng, Ying
Luo, Yongming
Jiang, Xin
Kengara, Fredrick O
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Show full item recordAbstract/ Overview
The effectiveness of anaerobic bioremediation systems for PAH-contaminated soil
may be constrained by low contaminants bioaccessibility due to limited aqueous solubility
and lack of suitable electron acceptors. Information on what is the rate-limiting factor in
bioremediation process is of vital importance in the decision in what measures can be taken
to assist the biodegradation efficacy. In the present study, four different microcosms were set
to study the effect of methyl-β-cyclodextrin (MCD) and nitrate addition (N) on PAHs
biodegradation under anaerobic conditions in a red paddy soil. Meanwhile, sequential
Tenax extraction combined with a first-three-compartment model was employed to evaluate
the rate-limiting factors in MCD enhanced anaerobic biodegradation of PAHs. Microcosms
with both 1%(w/w) MCD and 20 mM N addition produced maximum biodegradation of …
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- Department of Chemistry [326]