Journal
BIORESOURCE TECHNOLOGY
Volume 286, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2019.121377
Keywords
Pig manure; Composting; Diatomite; Nitrogen loss; Greenhouse gases
Funding
- Research Fund for International Young Scientists from National Natural Science Foundation of China [31750110469]
- Science and Technology Program of Yangling Demonstration Zone China [2017NY-24]
- Key Research and Innovation Plant of Shaanxi Province [2018ZDCXL-NY-02-02]
- National Key Research and Development Program of China [2016YFD0800606]
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In order to investigate the improvement of Diatomite (DM) on the production of cleaner composting, reflected by emission of NH3 and greenhouse gases (GHGs), three dosages of DM (0%, 5% and 10%) were added into mixture of pig manure and sawdust for 42 days composting. Addition of DM promoted the transformation of organic matter and improved the quality of end product. Meanwhile, it was confirmed by the increase of NO3--N formation and nitrogen conservation. Besides, adding DM aided on reducing emission of CH4, N2O and NH3 by 18.27% - 30.41%, 26.89% - 84.16% and 10.41% - 23.70%, respectively. Furthermore, the DM had a positive effect on the maturity of compost products, reflecting by GI value and HA/FA. Consequently, through the factor analysis, 10% was suggested to improve the quality of end product and reduce nitrogen loss as well as GHGs emission.
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