1. The changes in carbon, nitrogen components and humic substances during organic-inorganic aerobic co-composting.
- Author
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Yu, Huiyong, Xie, Beitao, Khan, Rayyan, and Shen, Guoming
- Subjects
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AEROBIC bacteria , *COMPOSTING , *CARBON analysis , *NITROGEN analysis , *HUMUS , *BIOCHAR - Abstract
Highlights • Adding fertilizers had no adverse effects on the compost fermentation process. • Organic-inorganic aerobic co-composting increased compost nutrients contents. • Adding biochar contributed to the decomposition of stubborn carbonaceous matter. • Biochar improved nitrogen transformation and reduced nitrogen loss. • The 10–15% addition dose of biochar by weight is optimum in this study. Abstract In this article, the changes in carbon, nitrogen components, and humic substances during organic-inorganic aerobic co-composting, with adding biochar as an additive or not, were studied. Results showed that adding a certain amount of inorganic fertilizers had no adverse effects on the compost fermentation process. Biochar enhanced the temperature, pH, oxygen content in the compost piles and ultimately hastened the fermentation process. Biochar contributed to the decomposition of hemicellulose, cellulose, lignin and promoted compost humification. Adding biochar increased the contents of acid hydrolysis nitrogen, amino acid nitrogen, amino sugar nitrogen, unidentified organic nitrogen and decreased the content of ammonia organic nitrogen thus improved nitrogen transformation and reduced nitrogen loss. The addition of biochar increased the nutrients contents in mature composts. The amendment of 10–15% biochar by weight as an additive would be optimum for the co-composting of organic-inorganic materials. These results contributed to produce value-added composting fertilizers. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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