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Cited by 352

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Insight into the Effects of Biochar on Manure Composting: Evidence Supporting the Relationship between N2O Emission and Denitrifying Community

Wang, Cheng, Lu, Haohao, Dong, Da, Deng, Hui, Strong, P. J., Wang, Hailong, Wu, Weixiang·2013·Environmental Science & Technology

Abstract

Although nitrous oxide (N2O) emissions from composting contribute to the accelerated greenhouse effect, it is difficult to implement practical methods to mitigate these emissions. In this study, the effects of biochar amendment during pig manure composting were investigated to evaluate the inter-relationships between N2O emission and the abundance of denitrifying bacteria. Analytical results from two pilot composting treatments with (PWSB, pig manure + wood chips + sawdust + biochar) or without (PWS, pig manure + wood chips + sawdust) biochar (3% w/w) demonstrated that biochar amendment not only lowered NO2(-)-N concentrations but also lowered the total N2O emissions from pig manure composting, especially during the later stages. Quantification of functional genes involved in denitrification and Spearman rank correlations matrix revealed that the N2O emission rates correlated with the abundance of nosZ, nirK, and nirS genes. Biochar-amended pig manure had a higher pH and a lower moisture content. Biochar amendment altered the abundance of denitrifying bacteria significantly; less N2O-producing and more N2O-consuming bacteria were present in the PWSB, and this significantly lowered N2O emissions in the maturation phase. Together, the results demonstrate that biochar amendment could be a novel greenhouse gas mitigation strategy during pig manure composting.

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Metadata

Authors
Wang, C., Lu, H., Dong, D., Deng, H., Strong, P. J., Wang, H., & Wu, W.
Venue
Environmental Science & Technology
Published
2013-06-19
Volume
47
Issue
13
Pages
7341-7349
ISSN
  • 0013-936X (ISSN-L)
  • 1520-5851
OpenAlex
W1980716979
Cited by
352
References
6
FWCI
19.81
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Insight into the Effects of Biochar on Manure Composting: Evidence Supporting the Relationship between N2O Emission and Denitrifying Community. https://app.cochat.ai/papers/10.1021/es305293h
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Wang, C., Lu, H., Dong, D., Deng, H., Strong, P. J., Wang, H., & Wu, W. (2013). Insight into the Effects of Biochar on Manure Composting: Evidence Supporting the Relationship between N2O Emission and Denitrifying Community. Environmental Science & Technology. https://doi.org/10.1021/es305293h

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