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Genome-centric metagenomics and methanogenic pathway analysis for acclimated anaerobic digestion of chicken manure with high ammonia stressed under thermophilic condition
School of Optoelectronic Engineering, Changzhou Institute of Technology, Changzhou, 213032, Jiangsu Province, China.ORCID iD: 0009-0000-8786-9347
Institute of Urban and Rural Mining, Changzhou University, Changzhou, 213164, Jiangsu Province, China.ORCID iD: 0000-0003-0167-8959
School of Optoelectronic Engineering, Changzhou Institute of Technology, Changzhou, 213032, Jiangsu Province, China.
School of Optoelectronic Engineering, Changzhou Institute of Technology, Changzhou, 213032, Jiangsu Province, China.ORCID iD: 0009-0001-1377-2558
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2024 (English)In: Environmental Research, ISSN 0013-9351, E-ISSN 1096-0953, Vol. 258, article id 119453Article in journal (Refereed) Published
Abstract [en]

Thermophilic anaerobic digestion (AD) of animal manure offers various environmental benefits but the process requires a microbial community acclimatized to high ammonia. In current study, a lab-scale continuous stirred tank reactor (CSTR) fed with chicken manure was operated under thermophilic condition for 450 days in total. Results showed that the volumetric methane production decreased from 445 to 328 and sharply declined to 153 mL L−1·d−1 with feeding total solid (TS) step increased from 5% to 7.5% and 10%, respectively. While, after a long-term stop feeding for 80 days, highly disturbed reactor was able to recover methane generation to 739 mL L−1·d−1 at feeding TS of 10%. Isotope analysis indicted acetate converted to methane through the syntrophic acetate oxidation and hydrogenotrophic methanogenesis (SAO-HM) pathway increased from 33% to 63% as the concentration of ammonium increased from 2493 to 6258 mg L−1. Significant different in the genome expression of the SAO bacterial from 0.09% to 1.23%, combining with main hydrogenotrophic partners (Methanoculleus spp. and Methanothermobacter spp.) contented of 2.1% and 99.9% during inhibitory and recovery stages, respectively. The highly expressed KEGG pathway in level 3 (enzyme genes) for the Recovery sludge combining with the extraordinary high abundance of genera Halocella sp. suggested that Halocella sp. might be a highly efficient hydrolytic and acidogenic microorganism and enhance the process of SAO during carbon metabolic flow to methane. This report will be a basis for further study of AD studies on high nitrogen content of poultry manure.

Place, publisher, year, edition, pages
2024. Vol. 258, article id 119453
Keywords [en]
Acclimation, Metagenomics, Methanogenic pathway, Thermophilic, Chicken manure
National Category
Microbiology
Research subject
Resource Recovery
Identifiers
URN: urn:nbn:se:hb:diva-33189DOI: 10.1016/j.envres.2024.119453ISI: 001260458800001Scopus ID: 2-s2.0-85196625349OAI: oai:DiVA.org:hb-33189DiVA, id: diva2:1929825
Available from: 2025-01-21 Created: 2025-01-21 Last updated: 2025-01-29Bibliographically approved

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Mahboubi, Amir

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Li, YanYin, Dong-minLi, Hao-xuanZhang, Xue-yingMahboubi, Amir
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