TY - JOUR
T1 - Anaerobic biodegradation of polycyclic aromatic hydrocarbons with amendment of iron(III) in mangrove sediment slurry
AU - Li, Chun Hua
AU - Wong, Yuk Shan
AU - Tam, Nora Fung Yee
N1 - Funding Information:
The research described in this paper was supported by a grant from the Strategic Research Grant of the City University of Hong Kong (Project No.: 7002365 ). The authors would like to thank Dr. Lin Ke for his help in revising this paper, Dr. Guangcheng Chen and Ph.D. student Qingtan Gao for their assistance in sediment sampling.
PY - 2010/11
Y1 - 2010/11
N2 - Mangrove sediment, influenced by tidal cycles, switches between low-oxygen and non-oxygen conditions, and iron is abundant in it. Polycyclic aromatic hydrocarbon (PAH) contamination often occurs in mangrove wetlands. In the present paper, the effects of iron [Fe(III)] amendment on the biodegradation of four mixed PAHs, namely fluorene (Fl), phenanthrene (Phe), fluoranthene (Flua) and pyrene (Pyr), in mangrove sediment slurries, with and without the inoculation of the enriched PAH-degrading bacterial consortia, under low-oxygen (2±0.3% O2) and non-oxygen (0% O2) conditions were investigated. Under both oxygen conditions and for all four PAHs, the highest PAHs biodegradation was observed in the groups with the inoculation of the enriched PAH-degrading consortia, while the groups without the inoculum and without Fe(III) amendment had the lowest biodegradation. However, the amendment of Fe(III) did not show any significant improvement on the biodegradation of all the four mixed PAHs.
AB - Mangrove sediment, influenced by tidal cycles, switches between low-oxygen and non-oxygen conditions, and iron is abundant in it. Polycyclic aromatic hydrocarbon (PAH) contamination often occurs in mangrove wetlands. In the present paper, the effects of iron [Fe(III)] amendment on the biodegradation of four mixed PAHs, namely fluorene (Fl), phenanthrene (Phe), fluoranthene (Flua) and pyrene (Pyr), in mangrove sediment slurries, with and without the inoculation of the enriched PAH-degrading bacterial consortia, under low-oxygen (2±0.3% O2) and non-oxygen (0% O2) conditions were investigated. Under both oxygen conditions and for all four PAHs, the highest PAHs biodegradation was observed in the groups with the inoculation of the enriched PAH-degrading consortia, while the groups without the inoculum and without Fe(III) amendment had the lowest biodegradation. However, the amendment of Fe(III) did not show any significant improvement on the biodegradation of all the four mixed PAHs.
KW - Electron acceptor
KW - Mangrove
KW - Oxygen condition
KW - PAH stress
KW - PAH-degrading bacterial consortia
UR - http://www.scopus.com/inward/record.url?scp=77954538955&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2010.06.005
DO - 10.1016/j.biortech.2010.06.005
M3 - Article
C2 - 20594830
AN - SCOPUS:77954538955
SN - 0960-8524
VL - 101
SP - 8083
EP - 8092
JO - Bioresource Technology
JF - Bioresource Technology
IS - 21
ER -