Exploring gaseous emissions and pivotal enzymatic activity during co-composting of branch and pig manure: The effect of particle size of bulking agents

[Display omitted] •Particle size of branch on enzymatic activity and gaseous emissions during composing were assessed.•The contaminations of greenhouse gases were regulated by amending 2 cm of branch.•The active microbial assimilation and catabolism were ameliorated by applying 2 cm of branch.•The a...

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Veröffentlicht in:Bioresource technology 2023-08, Vol.382, p.129199-129199, Article 129199
Hauptverfasser: Jiao, Minna, Ren, Xiuna, Zhan, Xiangyu, Hu, Cuihuan, Wang, Juan, Syed, Asad, Bahkali, Ali H., Zhang, Zengqiang
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Sprache:eng
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Zusammenfassung:[Display omitted] •Particle size of branch on enzymatic activity and gaseous emissions during composing were assessed.•The contaminations of greenhouse gases were regulated by amending 2 cm of branch.•The active microbial assimilation and catabolism were ameliorated by applying 2 cm of branch.•The application of 2 cm of branch facilitated the enzymatic activities by optimizing benefiting habitat. The purpose of current study was to probe the effect of various length of branch on gaseous emissions and vital enzymatic activity. Four lengths (< 2 cm, 2 cm, 5 cm, and > 5 cm) of clipped branch were mingled with collected pig manure for 100 days aerobic fermentation. The consequence demonstrated that the amendment of 2 cm of branch showed conducive to decline the greenhouse gas emissions, which the CH4 emissions decreased by 1.62–40.10%, and the N2O emissions decreased by 21.91–34.04% contrasted with other treatments. Furthermore, the peak degree of enzymatic activities was also observed in 2 cm of branch treatment by the optimizing living condition for microbes. In view of microbiological indicators, the most abundant and complex bacterial community could be monitor in 2 cm of branch composting pile, which verified the microbial facilitation. Summing up, the strategy of 2 cm branch amendment would be recommended.
ISSN:0960-8524
1873-2976
DOI:10.1016/j.biortech.2023.129199