Microbial driving mechanism of biochar and bean dregs on NH3 and N2 O emissions during composting

Bioresource Technology
Yajun YangJialong Lv

Abstract

In this study, the effect of biochar (BC) and bean dregs (BD) on nitrifiers and denitrifiers as well as the contributions to the NH3 and N2O emissions were investigated. Compared with the BD treatment, the maximum value of NH3 and N2O emission was decreased by 32.92% and 46.61% in the BD + BC treatment, respectively. The production of NH3 and N2O was closely associated with the abundance and structure of nitrogen functional genes. BD + BC increased the abundance of AOB amoA gene to decrease the NH3 emission. The abundance of nirS was more closely associated with N2O. The abundance of nirS in the BD + BC was lowered by 18.93% compared with the BD treatment, thereby decreasing the N2O emission after composting. Besides, the nosZ-type gene was the more functional denitrification bacterial communities to effect the N2O emissions.

References

Mar 28, 2002·Applied and Environmental Microbiology·Anders PrieméJames M Tiedje
Jul 4, 2002·Bioresource Technology·Suzelle BarringtonWilliam Knight
Mar 8, 2011·Microbial Biotechnology·Koki MaedaTakashi Osada
Apr 13, 2011·Bioresource Technology·Wenjie GuQiaoyi Huang
Aug 7, 2012·Bioresource Technology·Ronghua LiRan Xiao
Jan 4, 2017·Waste Management·Eunice Agyarko-MintahFlavio Fornasier
Nov 21, 2017·Waste Management·Rafaela CáceresOriol Marfà

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Citations

Aug 21, 2021·The Science of the Total Environment·Xingzu GaoWenhai Luo
Aug 21, 2021·Bioresource Technology·Zhicheng XuWenhai Luo
Aug 17, 2021·Ecotoxicology and Environmental Safety·Bingchen WangHuihui Wang

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