Bioremediation of contaminated coastal sediment: Optimization of slow release biostimulant ball using response surface methodology (RSM) and stabilization of metals from contaminated sediment.
The aim of the present study is to optimize the slow release biostimulant ball (BSB) for bioremediation of contaminated coastal sediment using response surface methodology (RSM). Metals contamination and stabilization of metals in coastal sediments using BSB were investigated. The effects of BSB size (1-5cm), distance (1-10cm), and time (1-4months) on the stabilization of metals including Fe, Cd, Cu, and Pb were determined. The maximum stabilization percentages of Fe, Cd, Cu, and Pb, of 64.5%, 54.9%, 63.8%, and 47.6%, respectively, were observed at a 3cm ball size, 5.5cm distance, and a period of 4months; these values are the optimum conditions for effective treatment of contaminated coastal sediment. The determination coefficient of the R2value suggests that >91.55%, 89.97%, 96.10%, and 86.40% of the variance is attributable to the variables of Fe, Cd, Cu, and Pb, respectively.
Department of Environmental Engineering, Korea Maritime and Ocean University, Busan, Republic of Korea.
Bakthavachallam
B
Subha
Department of Environmental Engineering, Korea Maritime and Ocean University, Busan, Republic of Korea. Electronic address: soyc@kmou.ac.kr.
Young Chae
YC
Song
Nuclear Power Equipment Research Centre, Korea Maritime and Ocean University, Busan, Republic of Korea.
Jung Hui
JH
Woo
D001673:Biodegradation, Environmental; D004784:Environmental Monitoring / Q000379:methods*; D019015:Geologic Sediments / Q000737:chemistry* / Q000382:microbiology*; D019216:Metals, Heavy / Q000032:analysis*; D059013:Microbial Consortia; D008962:Models, Theoretical; D010316:Particle Size; D013499:Surface Properties; D014874:Water Pollutants, Chemical / Q000032:analysis*
D019216:Metals, Heavy; D014874:Water Pollutants, Chemical
Bioremediation; Biostimulant ball; Coastal sediment; Metals; Response surface methodology; Stabilization