Comparative environmental and economic life cycle assessment of high solids anaerobic co-digestion for biosolids and organic waste management.

Autor: Lee E; Department of Civil & Environmental Engineering, University of South Florida, 4202 E Fowler Ave, ENG 030, Tampa, FL, 33620, USA., Oliveira DSBL; Department of Chemical and Biomedical Engineering, University of South Florida, 4202 E Fowler Ave, ENB 118, Tampa, FL, 33620, USA., Oliveira LSBL; Department of Chemical and Biomedical Engineering, University of South Florida, 4202 E Fowler Ave, ENB 118, Tampa, FL, 33620, USA., Jimenez E; Department of Civil & Environmental Engineering, University of South Florida, 4202 E Fowler Ave, ENG 030, Tampa, FL, 33620, USA; Kimley-Horn and Associates, INC., 655 N Franklin St #150, Tampa, FL, 33602, USA., Kim Y; Department of Civil & Environmental Engineering, University of South Florida, 4202 E Fowler Ave, ENG 030, Tampa, FL, 33620, USA., Wang M; Department of Civil & Environmental Engineering, University of South Florida, 4202 E Fowler Ave, ENG 030, Tampa, FL, 33620, USA; Department of Energy & Mineral Engineering, Pennsylvania State University, 113 Hosler Building, State College, PA, 16802, USA., Ergas SJ; Department of Civil & Environmental Engineering, University of South Florida, 4202 E Fowler Ave, ENG 030, Tampa, FL, 33620, USA., Zhang Q; Department of Civil & Environmental Engineering, University of South Florida, 4202 E Fowler Ave, ENG 030, Tampa, FL, 33620, USA. Electronic address: qiongzhang@usf.edu.
Jazyk: angličtina
Zdroj: Water research [Water Res] 2020 Mar 15; Vol. 171, pp. 115443. Date of Electronic Publication: 2019 Dec 24.
DOI: 10.1016/j.watres.2019.115443
Abstrakt: High-Solids Anaerobic co-Digestion (HS-AcD) of sewage sludge (biosolids) with the organic fraction of municipal solid waste is a promising waste management alternative due to high methane yields, lower reactor volume requirements, lower energy inputs, and less leachate production than liquid anaerobic digestion. This study evaluated the environmental and economic burdens and benefits of HS-AcD of biosolids, Food Waste (FW), and Yard Waste (YW) using Life Cycle Assessment (LCA) and Life Cycle Cost Analysis (LCCA) methods using Hillsborough County, Florida in the U.S. as a case study. Results for HS-AcD were compared with incineration, composting, and landfilling, with and without landfill gas use. The results showed that HS-AcD of a mixture of biosolids, FW, and YW had the lowest environmental impacts in all categories analyzed (global warming potential, acidification, eutrophication, and ecotoxicity). In terms of economics, HS-AcD had the lowest life cycle cost, with or without considering land acquisition. The results show that HS-AcD is the best choice to manage biosolids and the organic waste in Hillsborough County in terms of both environmental and economic sustainability.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2019 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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