Multiple Substrates Anaerobic Co-Digestion: A Farm-Scale Biogas Project and the GHG Emission Reduction Assessment

UGlobal warming has become an increasingly inconvenient situation, indicating the importance of reducing greenhouse gas (GHG) emissions. Anaerobic co-digestion of multiple substrates is an effective way to utilize wastes and reduce GHG emissions. In this study, batch anaerobic co-digestion of pig ma...

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Veröffentlicht in:Waste and biomass valorization 2021-04, Vol.12 (4), p.2049-2057
Hauptverfasser: Wang, Xuemei, Li, Zifu, Cheng, Shikun, Ji, Hongbing, Shi, Jun, Yang, Huiyun
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container_end_page 2057
container_issue 4
container_start_page 2049
container_title Waste and biomass valorization
container_volume 12
creator Wang, Xuemei
Li, Zifu
Cheng, Shikun
Ji, Hongbing
Shi, Jun
Yang, Huiyun
description UGlobal warming has become an increasingly inconvenient situation, indicating the importance of reducing greenhouse gas (GHG) emissions. Anaerobic co-digestion of multiple substrates is an effective way to utilize wastes and reduce GHG emissions. In this study, batch anaerobic co-digestion of pig manure, corn straw, and fruit and vegetable wastes (FVW) was performed in a laboratory and extended to a farm-scale biogas project. Laboratory test results showed a specific biogas yield of 420.18 mL/g VS when the ratio of pig manure, corn straw, and FVW was 100:20:1 (TS). A farm-scale biogas project was improved on the basis of laboratory studies, and an average specific volumetric biogas production rate of 1.22 m 3 /m 3  d was obtained. For GHG emission reduction assessment, the open anaerobic pond of pig manure, solid waste disposal site of FVW, and uncontrolled burning of corn straw were used as baselines, obtaining a total GHG emission reduction of 303.08 t CO 2 annually. The farm-scale biogas project could treat corn straw, pig manure, and fruits and vegetable wastes, achieving considerable environmental benefits. Graphic Abstract
doi_str_mv 10.1007/s12649-020-01166-3
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Anaerobic co-digestion of multiple substrates is an effective way to utilize wastes and reduce GHG emissions. In this study, batch anaerobic co-digestion of pig manure, corn straw, and fruit and vegetable wastes (FVW) was performed in a laboratory and extended to a farm-scale biogas project. Laboratory test results showed a specific biogas yield of 420.18 mL/g VS when the ratio of pig manure, corn straw, and FVW was 100:20:1 (TS). A farm-scale biogas project was improved on the basis of laboratory studies, and an average specific volumetric biogas production rate of 1.22 m 3 /m 3  d was obtained. For GHG emission reduction assessment, the open anaerobic pond of pig manure, solid waste disposal site of FVW, and uncontrolled burning of corn straw were used as baselines, obtaining a total GHG emission reduction of 303.08 t CO 2 annually. The farm-scale biogas project could treat corn straw, pig manure, and fruits and vegetable wastes, achieving considerable environmental benefits. 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subjects Anaerobic digestion
Animal wastes
Biogas
Burning
Carbon dioxide
Corn
Corn straw
Digestion
Emission analysis
Emissions control
Engineering
Environment
Environmental Engineering/Biotechnology
Farm buildings
Farms
Fruits
Greenhouse effect
Greenhouse gases
Industrial Pollution Prevention
Laboratories
Laboratory tests
Manures
Original Paper
Pig manure
Refuse as fuel
Renewable and Green Energy
Solid waste disposal
Solid wastes
Straw
Substrates
Swine
Vegetables
Waste disposal
Waste Management/Waste Technology
Wastes
title Multiple Substrates Anaerobic Co-Digestion: A Farm-Scale Biogas Project and the GHG Emission Reduction Assessment
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