TY - JOUR
T1 - Modeling sorption and biodegradation of phenanthrene in mangrove sediment slurry
AU - Chen, Jian Lin
AU - Wong, Ming Hung
AU - Wong, Yuk Shan
AU - Tam, Nora Fung Yee
N1 - Funding Information:
The work described in this paper was supported by the Areas of Excellence established under the University Grants Committee of the Hong Kong SAR, China (Project no. AoE/P-04/2004 ).
PY - 2011/6/15
Y1 - 2011/6/15
N2 - A mathematical model, combining both sorption and biodegradation process, was developed to predict the biodegradation of phenanthrene by Sphingomonas sp. in different sediment slurries. The model includes two sorption parameters, α (the partition coefficient) and 1/K (the diffusion resistance); a kinetic parameter k (the first order rate constant); and a sediment parameter, AV (the specific sediment surface area in unit volume of slurry). These parameters were evaluated and verified in three types of sediment slurry systems (namely sandy clay loam Ho Chung sediment with fastest degradation, sandy Kei Ling Ha sediment with medium degradation, and clay Mai Po sediment with slowest degradation) at different initial phenanthrene concentrations. High R2 values, ranging from 0.935 to 0.969, were obtained. Based on this integrated sorption-biodegradation model, the phenanthrene biodegradation in any sediment slurry could be predicted as long as the parameters of the specific sediment surface area in unit volume of slurry, total organic carbon and clay content were measured.
AB - A mathematical model, combining both sorption and biodegradation process, was developed to predict the biodegradation of phenanthrene by Sphingomonas sp. in different sediment slurries. The model includes two sorption parameters, α (the partition coefficient) and 1/K (the diffusion resistance); a kinetic parameter k (the first order rate constant); and a sediment parameter, AV (the specific sediment surface area in unit volume of slurry). These parameters were evaluated and verified in three types of sediment slurry systems (namely sandy clay loam Ho Chung sediment with fastest degradation, sandy Kei Ling Ha sediment with medium degradation, and clay Mai Po sediment with slowest degradation) at different initial phenanthrene concentrations. High R2 values, ranging from 0.935 to 0.969, were obtained. Based on this integrated sorption-biodegradation model, the phenanthrene biodegradation in any sediment slurry could be predicted as long as the parameters of the specific sediment surface area in unit volume of slurry, total organic carbon and clay content were measured.
KW - Biodegradation
KW - Bioremediation
KW - PAH
KW - Sorption
KW - The first order rate model
UR - http://www.scopus.com/inward/record.url?scp=79956099443&partnerID=8YFLogxK
U2 - 10.1016/j.jhazmat.2011.03.060
DO - 10.1016/j.jhazmat.2011.03.060
M3 - Article
C2 - 21474240
AN - SCOPUS:79956099443
SN - 0304-3894
VL - 190
SP - 409
EP - 415
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
IS - 1-3
ER -