Succession of Microbial Community during the Co-Composting of Food Waste Digestate and Garden Waste

Xiaohan Wang, Xiaoli He and Jing Liang ()
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Xiaohan Wang: Shanghai Academy of Landscape Architecture Science and Planning, Shanghai 200232, China
Xiaoli He: Shanghai Academy of Landscape Architecture Science and Planning, Shanghai 200232, China
Jing Liang: Shanghai Academy of Landscape Architecture Science and Planning, Shanghai 200232, China

IJERPH, 2022, vol. 19, issue 16, 1-11

Abstract: Microorganisms are of critical importance during the composting process. The aim of this study was to reveal the bacterial and fungal compositions of a composting pile of food waste digestate and garden waste, where the succession of the microbial communities was monitored using Illumina MiSeq sequencing. We explored the efficiency of composting of different microorganisms to judge whether the composting system was running successfully. The results showed that the composting process significantly changed the bacterial and fungal structure. Firmicutes, Proteobacteria, and Bacteroidota were the dominant phyla of the bacterial communities, while Ascomycota was the dominant phylum of the fungal communities. Moreover, the highest bacterial and fungal biodiversity occurred in the thermophilic stage. The physical and chemical properties of the final compost products conformed to the national standards of fertilizers. The efficient composting functional microbes, including Cladosporium , Bacillus and Saccharomonospora , emerged to be an important sign of a successfully operating composting system.

Keywords: co-composting; food waste digestate; garden waste; microbial community (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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