Investigation of waste biomass co-pyrolysis with petroleum sludge using a response surface methodology.
The treatment of waste biomass (sawdust) through co-pyrolysis with refinery oily sludge was carried out in a fixed-bed reactor. Response surface method was applied to evaluate the main and interaction effects of three experimental factors (sawdust percentage in feedstock, temperature, and heating rate) on pyrolysis oil and char yields. It was found that the oil and char yields increased with sawdust percentage in feedstock. The interaction between heating rate and sawdust percentage as well as between heating rate and temperature was significant on the pyrolysis oil yield. The higher heating value of oil originated from sawdust during co-pyrolysis at a sawdust/oily sludge ratio of 3:1 increased by 5 MJ/kg as compared to that during sawdust pyrolysis alone, indicating a synergistic effect of co-pyrolysis. As a result, petroleum sludge can be used as an effective additive in the pyrolysis of waste biomass for improving its energy recovery.
WZU-UNBC Joint Research Institute of Ecology and Environment, Wenzhou University (WZU), Wenzhou, Zhejiang Province, 325035, PR China; Environmental Engineering Program, University of Northern British Columbia (UNBC), Prince George, British Columbia, V2N 4Z9, Canada.
Guangji
G
Hu
WZU-UNBC Joint Research Institute of Ecology and Environment, Wenzhou University (WZU), Wenzhou, Zhejiang Province, 325035, PR China; Environmental Engineering Program, University of Northern British Columbia (UNBC), Prince George, British Columbia, V2N 4Z9, Canada. Electronic address: Jianbing.Li@unbc.ca.
Jianbing
J
Li
College of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, PR China.
Xinying
X
Zhang
WZU-UNBC Joint Research Institute of Ecology and Environment, Wenzhou University (WZU), Wenzhou, Zhejiang Province, 325035, PR China.
Yubao
Y
Li
D018533:Biomass; D009821:Oils; D010578:Petroleum; D012722:Sewage; D014934:Wood
D009821:Oils; D010578:Petroleum; D012722:Sewage
Fixed-bed reactor; Oily sludge; Pyrolysis oil; Sawdust; Synergistic effect