Highly efficient reduction of ammonia emissions from livestock waste by the synergy of novel manure acidification and inhibition of ureolytic bacteria

被引:9
作者
Liu, Jun [1 ,2 ]
Li, Xia [1 ]
Xu, Yanliang [1 ]
Wu, Yutian [1 ]
Wang, Ruili [3 ]
Zhang, Xiujuan [3 ]
Hou, Yaguang [3 ]
Qu, Haoli [4 ]
Wang, Li [5 ]
He, Mingxiong [1 ]
Kupczok, Anne [2 ]
He, Jing [1 ]
机构
[1] Minist Agr & Rural Affairs, Key Lab Dev & Applicat Rural Renewable Energy, Biogas Inst, Chengdu 610041, Peoples R China
[2] Wageningen Univ & Res, Bioinformat Grp, NL-6708 PB Wageningen, Netherlands
[3] Inner Mongolia Acad Sci & Technol, Hohhot 010010, Peoples R China
[4] Nanjing Res Inst Agr Mechanizat, Minist Agr, Nanjing 210014, Peoples R China
[5] Sichuan Acad Forestry, Chengdu 610081, Peoples R China
关键词
Ammonia; Microbial consortium; Acidification; Lactic acid bacteria; Livestock system; L-LACTIC ACID; SLURRY ACIDIFICATION; METHANE EMISSIONS; NITROUS-OXIDE; CHINA; UREA; METABOLISM; MITIGATION; DEPOSITION; IMPACT;
D O I
10.1016/j.envint.2023.107768
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
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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页数:12
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