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Updated: Jan 21, 2026

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Published on: October 29, 2016
Exploring the characteristics of dissolved organic matter and succession of bacterial community during composting
Zhiwei Jiang1, Yanyu Lu1, Jiaqi Xu1
1School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China.
Abstract:
The objective of this study was to explore the relationships among physico-chemical parameters, dissolved organic matters (DOM), and bacterial community during composting to better understand composting performances. The results showed total Kjeldahl nitrogen (TKN) (57%), temperature (39%), and pH (3%) were main factors driving the succession of bacterial communities. Firmicutes was a crucial phylum degrading organic matters for DOM formation, whereas the aromaticity and humification of DOM were closely related to Luteimonas (R2 = 0.971, p < 0.05) and Sphingobacteriaceae (R2 = 0.931, p < 0.05). Additionally, total phosphorus (TP), total potassium (TK), and TKN increased by 34.84%, 43.66%, and 65.91%, respectively, while organic matter decreased by 61.79%. The final compost had a C/N of 6.91 (<15) and a germination index of 97.81% (>80%), indicating that compost reached maturity and could be safely applied for soil amendment.
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