Bridging to circular bioeconomy through a novel biorefinery platform on a wastewater treatment plant

被引：1

作者：

Marami H. ^{[1
]}

He L. ^{[2
]}

Rafiee S. ^{[1
]}

Khoshnevisan B. ^{[3
]}

Tsapekos P. ^{[4
]}

Mobli H. ^{[1
]}

Elyasi S.N. ^{[1
]}

Liu H. ^{[5
]}

Angelidaki I. ^{[4
]}

机构：

[1] Department of Mechanical Engineering of Agricultural Machinery, Faculty of Agricultural Engineering and Technology, College of Agriculture and Natural Resources, University of Tehran

[2] Key Laboratory of Development and Application of Rural Renewable Energy, Biogas Institute of Ministry of Agriculture and Rural Affairs, Chengdu

[3] Department of Chemical Engineering, Biotechnology and Environmental Technology, University of Southern Denmark

[4] Department of Chemical and Biochemical Engineering, Technical University of Denmark, Kgs Lyngby

[5] Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Beijing

来源：

Renewable and Sustainable Energy Reviews | 2022年 / 154卷

关键词：

Biorefinery; Circular economy; Microbial protein; Nitrogen recovery; Wastewater treatment;

D O I：

10.1016/j.rser.2021.111895

中图分类号：

学科分类号：

摘要：

The growing population and the consequent protein scarcity have led to innovation in proteinaceous feed production methods. In this regard, the upcycling of nitrogen rich effluents into microbial protein (MP)/single cell protein (SCP) is considered as an innovative solution. This paper aims to employ life cycle assessment to identify the most environmentally friendly strategy to upcycle nitrogen (N) and carbon (C) flows from wastewater treatment plant (WWTP) into MP. Accordingly, several pathways for integrating WWTP and MP production facility were evaluated, in terms of C source (i.e., biogas or biomethane) and the pretreatment method applied to the reject water (RW) (i.e., centrifugation + filtration + pasteurization, electrochemical extraction, bio-electrochemical extraction). The results indicated that electrochemical and bio-electrochemical N recovery not only safely extracted N from RW but also led to promising solution for MP production from WWTP effluents. The pathway including bio-electrochemical N recovery and use of biologically upgraded biogas for MP had 42.17%, 195.95%, and 172.03% better environmental performance regarding human health, ecosystem quality, and resource scarcity, respectively, compared with standalone WWTP without MP production. However, the electrochemical N recovery outperformed other scenarios in the human health damage category with a net impact of 2.72 DALY/FU and in ecosystem quality damage category with a saving of −0.033 Species/FU. The results reported herein indicated that the use of chemical nutrients to enrich the cultivation medium had significant impacts on the overall environmental performance of the suggested biorefinery. Decreasing the consumption of synthetic nutrients and improving N to protein conversion efficiency by 20% can make the established pathway much more competitive with conventional proteinaceous feed sources such as soybean meal. © 2021 Elsevier Ltd

引用

共 68 条

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