Anaerobic co-digestion of yard waste, food waste, and pig slurry in a batch experiment: An investigation on methane potential, performance, and microbial community
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Author list: Mattana Pongsopon, Thamonwan Woraruthai, Piyanuch Anuwan, Thanyaphat Amawatjana, Charndanai Tirapanampai, Photchanathorn Prombun, Kanthida Kusonmano, Nopphon Weeranoppanant, Pimchai Chaiyen, Thanyaporn Wongnate
Publisher: Elsevier
Publication year: 2023
Volume number: 21
ISSN: 2589-014X
eISSN: 2589-014X
Languages: English-Great Britain (EN-GB)
Abstract
Anaerobic co-digestion (ACoD) of organic fraction of municipal solid waste (OFMSW) appears to be an efficient approach for biomethane production. This study conducted ACoD of yard waste (YW), food waste (FW), and pig slurry at varying percentages of YW, and the corresponding evolution of microbial community structure was observed. The results demonstrated that methane productivity increased with decreasing YW content. After 45 days, the system with 20%YW feedstock had the highest productivity with a maximum cumulative methane yield of 368.6 ± 21.6 mL/gVS. Interestingly, our findings revealed important cellulose-degrading bacteria like Ruminofilibacter, Pantoea, and Blvii28 wastewater-sludge group, along with acetoclastic and hydrogenotrophic methane producers like Methanosaeta and Methanoculleus, respectively. The microbial community profile is a potential guideline for microbial enrichment to produce high-efficiency inoculum for biomethane production from yard, agriculture, and livestock waste. © 2023 Elsevier Ltd
Keywords
Pig slurry, Yard waste
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