TY - JOUR
T1 - Sorption and removal of crude oil spills from seawater using peat-derived biochar
T2 - An optimization study
AU - AlAmeri, Khawla
AU - Giwa, Adewale
AU - Yousef, Lina
AU - Alraeesi, Abdulrahman
AU - Taher, Hanifa
N1 - Funding Information:
Authors appreciate Khalifa University of Science and Technology for the funding the Faculty start-up: Award # FS-2017-000001 .
Funding Information:
Authors appreciate Khalifa University of Science and Technology for the funding the Faculty start-up: Award # FS-2017-000001.
Publisher Copyright:
© 2019 Elsevier Ltd
PY - 2019/11/15
Y1 - 2019/11/15
N2 - Bio-based sorbents are preferred over chemical-based methods for the clean-up of crude oil spills in marine environments because bio-based sorbents are more environmentally friendly. This study evaluates the use of peat-derived biochar (PB) as a bio-sorbent for the sorption and removal of crude oil spills from synthetic seawater. Experiments were designed to determine the effect of four operating factors (PB/crude oil contact time, PB dosage, oil dosage, and temperature) on two performance indicators (crude oil sorption capacity of PB, S, and oil removal efficiency, R%). Regression models containing linear, quadratic, and two-way interaction terms were developed to predict S and R% from the four factors. Response surface methodology (RSM) was employed to identify the optimum conditions for the sorption and removal of crude oil from seawater. The performance indicators were predicted with a high degree of accuracy, i.e. with coefficient of determination (R2) values exceeding 90%. The optimum values of S and R% were estimated to be 32.5 g of crude oil/g of sorbent and 91.2% respectively. These optimum values were attained after 70 min of PB/crude oil contact time and at a temperature of 45 °C. The spent sorbent maintained its performance after three cycles of regeneration and reuse, suggesting that the material is reusable.
AB - Bio-based sorbents are preferred over chemical-based methods for the clean-up of crude oil spills in marine environments because bio-based sorbents are more environmentally friendly. This study evaluates the use of peat-derived biochar (PB) as a bio-sorbent for the sorption and removal of crude oil spills from synthetic seawater. Experiments were designed to determine the effect of four operating factors (PB/crude oil contact time, PB dosage, oil dosage, and temperature) on two performance indicators (crude oil sorption capacity of PB, S, and oil removal efficiency, R%). Regression models containing linear, quadratic, and two-way interaction terms were developed to predict S and R% from the four factors. Response surface methodology (RSM) was employed to identify the optimum conditions for the sorption and removal of crude oil from seawater. The performance indicators were predicted with a high degree of accuracy, i.e. with coefficient of determination (R2) values exceeding 90%. The optimum values of S and R% were estimated to be 32.5 g of crude oil/g of sorbent and 91.2% respectively. These optimum values were attained after 70 min of PB/crude oil contact time and at a temperature of 45 °C. The spent sorbent maintained its performance after three cycles of regeneration and reuse, suggesting that the material is reusable.
KW - Crude oil spill
KW - Optimization
KW - Peat-derived biochar
KW - Remediation
KW - Sorbent
KW - Statistical analysis
UR - http://www.scopus.com/inward/record.url?scp=85071518494&partnerID=8YFLogxK
U2 - 10.1016/j.jenvman.2019.109465
DO - 10.1016/j.jenvman.2019.109465
M3 - Article
C2 - 31476520
AN - SCOPUS:85071518494
SN - 0301-4797
VL - 250
JO - Journal of Environmental Management
JF - Journal of Environmental Management
M1 - 109465
ER -
