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Degradation of benzo[a]pyrene in an experimentally contaminated paddysoil by vetiver grass (Vetiveria zizanioides) |
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| Authors: | H. Li Y.M. Luo J. Song L.H. Wu P. Christie |
| Affiliation: | (1) Institute of Soil Science, Chinese Academy of Sciences, 210008 Nanjing, China;(2) College of Environment and Resource Sciences, Shanxi University, 030006 Taiyuan, China;(3) Agricultural and Environmental Science Department, Queen’s University Belfast, Newforge Lane, BT9 5PX, Belfast, UK |
| Abstract: | A pot experiment was conducted to study the effect of growing vetiver grass on the biodegradation of benzo[a]pyrene (B[a]P) under glasshouse conditions. Plant biomass, microbial biomass C and degradation of B[a]P were determined. B[a]P disappeared faster in the plant treatments than in unplanted controls. Disappearance of B[a]P was accompanied by an increase in soil microbial biomass C. Vetiver grass may promote the biodegradation of B[a]P under flooded conditions by plant roots by stimulating the microbial biomass. Microbial biomass was the main factor affecting dissipation of B[a]P under flooded conditions. |
| Keywords: | B[a]P phytoremediation polyaromatic hydrocarbons |
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