Journal
SCIENCE OF THE TOTAL ENVIRONMENT
Volume 658, Issue -, Pages 510-520Publisher
ELSEVIER
DOI: 10.1016/j.scitotenv.2018.12.198
Keywords
Parallel factor analysis; Composting; Aeration; Humic substance fractions; Hetero-two-dimensional correlation spectra; Components transformation
Categories
Funding
- National Natural Science Foundation of China [51878132, 51778116, 41771284]
Ask authors/readers for more resources
High humidity and potential threat of pathogen of anaerobic digestates are unfavorable to the environment by direct utilization. To achieve the sustainable utilization of digestates, composting might be a good choice. Meanwhile, the aeration rate of composting has been optimized. Co-composting of digestates and chicken manure was performed under different aeration conditions (0.05, 0.1 and 0.15 L.min(-1). kg(-1).organic matter (OM)). During composting, internal transformation of humic substance (HS) has been studied for obtaining the potential application value of the co-composting products. Results suggested that the HS concentration was increased by 21.1%, 26.4% and 22.4% with the aeration rates were 0.05, 0.1 and 0.15 L.min(-1).kg(-1).OM, respectively. The aeration rate of 0.15 L.min(-1)kg(-1).OM was more conducive to germination. Parallel factor analysis and dimensional correlation spectra (2DCOS) have been combined to reveal he conversion relationships of HS components for understanding the compost application pattern. Hetero-2DCOS indicated that aeration of 0.05 min(-1).kg(-1).OM and 0.1 L.min(-1).kg(-1).OM contributed to the formation of complex compounds at long wavelength, and aeration of 0.15 L.min(-1).kg(-1).OM was beneficial for labile compounds formation at short wavelength. In views of the aeration of 0.1 L.min(-1).kg(-1).OM was more beneficial to improve HS concentration than 0.05 L.min(-1).kg(-1).OM, 0.1 L.min(-1).kg(-1).OM and 0.15 L.min(-1).kg(-1).OM were consider as the most important aeration rate to conduct digestates composting. Overall, the aeration affected the HS composition which, in turn, might affect the application ways of composting products. This study could provide a reference for industrial composting production and applications. (C) 2018 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available