Increased abundance of nitrogen fixing bacteria by higher C/N ratio reduces the total losses of N and C in cattle manure and corn stover mix composting.

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ID: 83060
2020
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Abstract
The aim of this work was to investigate the effects of initial C/N ratio on the total losses of N and C during composting of cattle manure/corn stover mix, and to analyze how the initial C/N ratio impacts the successive progression of the microbiota to affect losses of N and C during the composting. Results indicated that the least of C-loss and N-loss occurred in 35:1 of initial C/N ratio. The succession of predominant bacteria in the composting mix was significantly affected by the temperature and the initial C/N ratio. Redundancy analysis showed that significant negative correlations existed between nitrogen fixing bacteria and N- and C-losses, and significant positive correlations existed between denitrifying bacteria and N- and C-losses. Higher initial C/N ratio appeared to promote growth of nitrogen fixing bacteria while compress the denitrifying bacteria. These results indicated that adjustment of the initial C/N ratio is an important way to control the losses of N and C in the compost. In addition, beneficial nitrogen fixing bacteria could potentially be screened and used as composting supplements to improve the quality of the compost.
Reference Key
zhang2020increasedwaste Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Zhang, Wenming;Yu, Chenxu;Wang, Xujie;Hai, Long;Hu, Juan;
Journal waste management (new york, ny)
Year 2020
DOI
S0956-053X(20)30003-9
URL
Keywords
c/n ratio c-loss denitrifying bacteria n-loss nitrogen fixing bacteria

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