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Liu, Jun; Li, Xia; Xu, Yanliang; Wu, Yutian; Wang, Ruili; Zhang, Xiujuan; Hou, Yaguang; Qu, Haoli; Wang, Li; He, Mingxiong; Kupczok, Anne; He, Jing
Environment international, February 2023, 2023-02-00, 20230201, 2023-02-01, Letnik: 172Journal Article
Display omitted •A LAB SynCom was constructed to abate NH3 emissions from livestock manure.•The LAB SynCom showed high lactic acid productivity and adaptability to manure.•A total of 95.5% of pig manure ammonia emissions were reduced by the novel strategy.•The lactic acid bacteria community reshaped manure microbial community structure.•Manure ureolytic bacteria were notably inhibited under the novel mitigation strategy. The global livestock system is one of the largest sources of ammonia emissions and there is an urgent need for ammonia mitigation. Here, we designed and constructed a novel strategy to abate ammonia emissions via livestock manure acidification based on a synthetic lactic acid bacteria community (LAB SynCom). The LAB SynCom possessed a wide carbon source spectrum and pH profile, high adaptability to the manure environment, and a high capability of generating lactic acid. The mitigation strategy was optimized based on the test and performance by adjusting the LAB SynCom inoculation ratio and the adding frequency of carbon source, which contributed to a total ammonia reduction efficiency of 95.5 %. Furthermore, 16S rDNA amplicon sequencing analysis revealed that the LAB SynCom treatment reshaped the manure microbial community structure. Importantly, 22 manure ureolytic microbial genera and urea hydrolysis were notably inhibited by the LAB SynCom treatment during the treatment process. These findings provide new insight into manure acidification that the conversion from ammonia to ammonium ions and the inhibition of ureolytic bacteria exerted a synergistic effect on ammonia mitigation. This work systematically developed a novel strategy to mitigate ammonia emissions from livestock waste, which is a crucial step forward from traditional manure acidification to novel and environmental-friendly acidification.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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