Effects of the feeding ratio of food waste on fed-batch aerobic composting and its microbial community.

Abstract:

:To determine the suitable feeding ratio for fed-batch aerobic composting, four fermenters were operated by adding 0%, 5%, 10% or 15% of food waste every day. The results showed that the 5% and 10% treatments were able to maintain continuous thermophilic conditions, while the 15% treatment performed badly in regard to composting temperature, which was probably due to the negative effects of excessive moisture on microbial activity. As composting proceeded, both the 5% and the 10% treatments reached maturity and achieved weight losses of approximately 65%. High-throughput sequencing results indicated that Firmicutes, Proteobacteria, Bacteroidetes and Actinobacteria were the dominant phyla of the community structure. The communities sampled at the thermophilic phases had high similarity and relatively low diversity, while species diversity increased in the maturity phase. This study was devoted to optimizing the fed-batch composting process and assessing bacterial communities, both of which were supplied as a reference for practical application.

journal_name

Bioresour Technol

journal_title

Bioresource technology

authors

Wang X,Pan S,Zhang Z,Lin X,Zhang Y,Chen S

doi

10.1016/j.biortech.2016.11.076

subject

Has Abstract

pub_date

2017-01-01 00:00:00

pages

397-404

eissn

0960-8524

issn

1873-2976

pii

S0960-8524(16)31597-8

journal_volume

224

pub_type

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