Journal
BIORESOURCE TECHNOLOGY
Volume 243, Issue -, Pages 771-777Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2017.07.021
Keywords
Pig manure; Medical stone; Lignocellulose; Humification; Compost quality
Funding
- China Postdoctoral Science Foundation [2016M602865]
- Yangling Demonstration Zone Collaborative Innovation Major Projects of Production, Study, Research and Application [2016CXY-12]
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The present study aimed to investigate the effect of different concentrations (0%, 2.5%, 5.0%, 7.5% and 10.0%) of medical stone (MS) on the lignocellulose degradation and organic matter humification during pig manure (PM) composting. The results indicated that the addition of MS drastically promoted the organic carbon and lignin degradation. Compared to the control, the decomposition rate of hemicellulose and cellulose was increased by 9.64-27.08% and 2.11-12.07% in MS added treatments. Meanwhile, MS amendment significantly improved the humification of composting process, and the humic acid contents in MS added treatments were 5.58-9.75% higher than control. The FTIR and synchronous fluorescence spectra indicated that the aromatization of final compost was promoted with increasing the MS amount. In addition, the application of MS blended composts could significantly improve the biomass and chlorophyll content of pachoi (Brassica chinensis L.). Due to the effective performance of MS, the 10.0% MS was suggested for PM composting. (C) 2017 Elsevier Ltd. All rights reserved.
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