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Microbial community succession in response to sludge composting efficiency and heavy metal detoxification during municipal sludge composting

This study researched microbial community succession in response to sludge composting efficiency and heavy metal detoxification during municipal sludge co-composting with spent mushroom and spent bleaching. The change law of key physicochemical properties, the heavy metals contents and forms during...

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Autores principales: Han, Weijiang, Chen, Shuona, Tan, Xiao, Li, Xin, Pan, Hua, Ma, Peijian, Wu, Zhihua, Xie, Qilai
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9581145/
https://www.ncbi.nlm.nih.gov/pubmed/36274704
http://dx.doi.org/10.3389/fmicb.2022.1015949
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author Han, Weijiang
Chen, Shuona
Tan, Xiao
Li, Xin
Pan, Hua
Ma, Peijian
Wu, Zhihua
Xie, Qilai
author_facet Han, Weijiang
Chen, Shuona
Tan, Xiao
Li, Xin
Pan, Hua
Ma, Peijian
Wu, Zhihua
Xie, Qilai
author_sort Han, Weijiang
collection PubMed
description This study researched microbial community succession in response to sludge composting efficiency and heavy metal detoxification during municipal sludge co-composting with spent mushroom and spent bleaching. The change law of key physicochemical properties, the heavy metals contents and forms during composting were analyzed, and the passivation of heavy metals after composting was explored. High-throughput sequencing was used to analyze the microbial community structure of treat 2 during composting, and the correlation analysis of microbial community structure with heavy metal contents and forms were carried out. The results showed that the sludge of each treatment reached composting maturity after 26 days of composting. Organic matter content, electrical conductivity, pH and seed germination index of treat 2 were all in line with the standard limit of agricultural sludge. Because of the presence of compost bacteria addition, the passivating heavy metals performance of treat 2 satisfied the standard limit of agricultural sludge after composting, which was superior to that of treat 1 and treat 3. The diversity of microbial communities in treat 2 decreased during composting. Extensive bacteria such as Bacillus, Geobacter, Lactobacillus, and Pseudomonas, which possessed the abilities of heavy metal passivation and organic oxidizing, were dominant in treat 2 during the heating stage. However, as composting proceeded, Tuberibacillus with ability of organic oxidizing gradually became the most dominant species at the thermophilic and cooling stages. Changes in microbial function varied from changes of microbial community in treat 2, subsequently affected the performances of heavy metal passivation and organic oxidizing during composting.
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spelling pubmed-95811452022-10-20 Microbial community succession in response to sludge composting efficiency and heavy metal detoxification during municipal sludge composting Han, Weijiang Chen, Shuona Tan, Xiao Li, Xin Pan, Hua Ma, Peijian Wu, Zhihua Xie, Qilai Front Microbiol Microbiology This study researched microbial community succession in response to sludge composting efficiency and heavy metal detoxification during municipal sludge co-composting with spent mushroom and spent bleaching. The change law of key physicochemical properties, the heavy metals contents and forms during composting were analyzed, and the passivation of heavy metals after composting was explored. High-throughput sequencing was used to analyze the microbial community structure of treat 2 during composting, and the correlation analysis of microbial community structure with heavy metal contents and forms were carried out. The results showed that the sludge of each treatment reached composting maturity after 26 days of composting. Organic matter content, electrical conductivity, pH and seed germination index of treat 2 were all in line with the standard limit of agricultural sludge. Because of the presence of compost bacteria addition, the passivating heavy metals performance of treat 2 satisfied the standard limit of agricultural sludge after composting, which was superior to that of treat 1 and treat 3. The diversity of microbial communities in treat 2 decreased during composting. Extensive bacteria such as Bacillus, Geobacter, Lactobacillus, and Pseudomonas, which possessed the abilities of heavy metal passivation and organic oxidizing, were dominant in treat 2 during the heating stage. However, as composting proceeded, Tuberibacillus with ability of organic oxidizing gradually became the most dominant species at the thermophilic and cooling stages. Changes in microbial function varied from changes of microbial community in treat 2, subsequently affected the performances of heavy metal passivation and organic oxidizing during composting. Frontiers Media S.A. 2022-10-05 /pmc/articles/PMC9581145/ /pubmed/36274704 http://dx.doi.org/10.3389/fmicb.2022.1015949 Text en Copyright © 2022 Han, Chen, Tan, Li, Pan, Ma, Wu and Xie. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Microbiology
Han, Weijiang
Chen, Shuona
Tan, Xiao
Li, Xin
Pan, Hua
Ma, Peijian
Wu, Zhihua
Xie, Qilai
Microbial community succession in response to sludge composting efficiency and heavy metal detoxification during municipal sludge composting
title Microbial community succession in response to sludge composting efficiency and heavy metal detoxification during municipal sludge composting
title_full Microbial community succession in response to sludge composting efficiency and heavy metal detoxification during municipal sludge composting
title_fullStr Microbial community succession in response to sludge composting efficiency and heavy metal detoxification during municipal sludge composting
title_full_unstemmed Microbial community succession in response to sludge composting efficiency and heavy metal detoxification during municipal sludge composting
title_short Microbial community succession in response to sludge composting efficiency and heavy metal detoxification during municipal sludge composting
title_sort microbial community succession in response to sludge composting efficiency and heavy metal detoxification during municipal sludge composting
topic Microbiology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9581145/
https://www.ncbi.nlm.nih.gov/pubmed/36274704
http://dx.doi.org/10.3389/fmicb.2022.1015949
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