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Title	Experimental study and techno-economic analysis of co-processing system for treatment of food waste with various impurities
ID_Doc	25235
Authors	Okopi, SI; Wang, JY; Liang, W; Kong, WZ; Hu, Y; Cui, JH; Guo, XY; Zhao, WW; Che, L; Gu, ZL; Xu, FQ
Title	Experimental study and techno-economic analysis of co-processing system for treatment of food waste with various impurities
Year	2024
Published
Abstract	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 ADCoPy, 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.
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