TY - JOUR
T1 - Experimental study and techno-economic analysis of co-processing system for treatment of food waste with various impurities
AU - Okopi, Solomon Inalegwu
AU - Wang, Jiayu
AU - Liang, Wen
AU - Kong, Wenzhuo
AU - Hu, Yang
AU - Cui, Jiahao
AU - Guo, Xinyang
AU - Zhao, Weiwei
AU - Che, Lei
AU - Gu, Zhaolin
AU - Xu, Fuqing
N1 - Publisher Copyright:
© 2023 Elsevier Ltd
PY - 2024/2
Y1 - 2024/2
N2 - The study assessed a co-processing system segregating food waste (FW) with different impurities into liquid (slurry) and solid fractions and treated using anaerobic digestion (AD) and pyrolysis (Py), respectively, which is defined as ADCo-Py. Biomethane potential tests showed higher methane yield from the FW slurry fraction (572.88 mL/gVSFW) compared to the whole FW (294.37 mL/gVSFW). Pyrolyzing the FW solid fraction reduced nitrogen compounds in bio-oil by 62 % compared to the whole FW. The energy balance and economic feasibility of ADCo-Py were compared with stand-alone AD, Py, and AD integrated with incineration (ADCo-INC). While all systems required extra energy, stand-alone Py and ADCo-INC needed 3.8 and 2.8 times more energy than ADCo-Py, respectively. Techno-economic analysis favored ADCo-Py, with a net present value (NPV) of $15 million and an internal rate of return (IRR) of 34 %. These findings highlighted FW separation as a promising approach, aligning with energy and economic goals in sustainable FW management.
AB - The study assessed a co-processing system segregating food waste (FW) with different impurities into liquid (slurry) and solid fractions and treated using anaerobic digestion (AD) and pyrolysis (Py), respectively, which is defined as ADCo-Py. Biomethane potential tests showed higher methane yield from the FW slurry fraction (572.88 mL/gVSFW) compared to the whole FW (294.37 mL/gVSFW). Pyrolyzing the FW solid fraction reduced nitrogen compounds in bio-oil by 62 % compared to the whole FW. The energy balance and economic feasibility of ADCo-Py were compared with stand-alone AD, Py, and AD integrated with incineration (ADCo-INC). While all systems required extra energy, stand-alone Py and ADCo-INC needed 3.8 and 2.8 times more energy than ADCo-Py, respectively. Techno-economic analysis favored ADCo-Py, with a net present value (NPV) of $15 million and an internal rate of return (IRR) of 34 %. These findings highlighted FW separation as a promising approach, aligning with energy and economic goals in sustainable FW management.
KW - Bioenergy
KW - Circular economy
KW - Food waste contaminants
KW - Integration technologies
KW - Resource recovery
UR - https://www.scopus.com/pages/publications/85181018945
U2 - 10.1016/j.biortech.2023.130020
DO - 10.1016/j.biortech.2023.130020
M3 - 文章
C2 - 37979882
AN - SCOPUS:85181018945
SN - 0960-8524
VL - 394
JO - Bioresource Technology
JF - Bioresource Technology
M1 - 130020
ER -
