TY - JOUR
T1 - Process simulation and life cycle assessment of converting autoclaved municipal solid waste into butanol and ethanol as transport fuels
AU - Meng, Fanran
AU - Ibbett, Roger
AU - de Vrije, Truus
AU - Metcalf, Pete
AU - Tucker, Gregory
AU - McKechnie, Jon
PY - 2019/4/15
Y1 - 2019/4/15
N2 -
In 2015/2016, the total municipal solid waste (MSW) collected by local authority in the U.K. was 26 million tonnes and over 57% is still put into landfill or incinerated. MSW is a promising feedstock for bio-butanol production as it has a high lignocellulosic fibre content such as paper, wood, and food waste, about 50 wt% of a typical MSW stream. The study evaluates acetone, butanol, ethanol and hydrogen production from autoclaved municipal solid waste feedstock. Life cycle assessment is undertaken to evaluate the acetone, butanol, ethanol and hydrogen production process, considering cogeneration of heat and power from residual biogenic waste based on experimental data and process modelling. Acetone, butanol, and ethanol product yield can be achieved at 12.2 kg butanol, 1.5 kg ethanol, 5.7 kg acetone, and 0.9 kg hydrogen per tonne MSW. The product yield is relatively low compared to other lignocellulosic feedstocks primarily because of the lower hydrolysis yield (38% for glucose) achieved in this study; however, hydrolysis yields could be improved in future optimisation work. The conversion shows a net primary energy demand of −1.11 MJ/MJ liquid biofuels (butanol and ethanol) and net greenhouse gas emission of −12.57 g CO
2
eq/MJ liquid biofuels, achieving a greenhouse gas reduction of 115% compared to gasoline comparator.
AB -
In 2015/2016, the total municipal solid waste (MSW) collected by local authority in the U.K. was 26 million tonnes and over 57% is still put into landfill or incinerated. MSW is a promising feedstock for bio-butanol production as it has a high lignocellulosic fibre content such as paper, wood, and food waste, about 50 wt% of a typical MSW stream. The study evaluates acetone, butanol, ethanol and hydrogen production from autoclaved municipal solid waste feedstock. Life cycle assessment is undertaken to evaluate the acetone, butanol, ethanol and hydrogen production process, considering cogeneration of heat and power from residual biogenic waste based on experimental data and process modelling. Acetone, butanol, and ethanol product yield can be achieved at 12.2 kg butanol, 1.5 kg ethanol, 5.7 kg acetone, and 0.9 kg hydrogen per tonne MSW. The product yield is relatively low compared to other lignocellulosic feedstocks primarily because of the lower hydrolysis yield (38% for glucose) achieved in this study; however, hydrolysis yields could be improved in future optimisation work. The conversion shows a net primary energy demand of −1.11 MJ/MJ liquid biofuels (butanol and ethanol) and net greenhouse gas emission of −12.57 g CO
2
eq/MJ liquid biofuels, achieving a greenhouse gas reduction of 115% compared to gasoline comparator.
KW - ABE fermentation
KW - Enzymatic hydrolysis
KW - Life cycle assessment
KW - Municipal solid waste
KW - Waste autoclaving
U2 - 10.1016/j.wasman.2019.04.003
DO - 10.1016/j.wasman.2019.04.003
M3 - Article
AN - SCOPUS:85063880804
SN - 0956-053X
VL - 89
SP - 177
EP - 189
JO - Waste Management
JF - Waste Management
ER -
