Abstract：
:This study evaluated the impact of biochar addition on nitrogen (N) loss and the process period during distilled grain waste (DGW) composting. Results from the five treatments (0, 5, 10, 15, and 20% biochar addition) indicated that 10% biochar addition (DB10) was optimal, resulting in the lowest N loss, 25.69% vs. 40.01% in the control treatment. Moreover, the DGW composting period was shortened by approximately 14 days by biochar addition. The composition of the microbial community was not significantly altered with biochar addition in each phase, however, it did accelerate the microbial succession during DGW composting. N metabolism pathway prediction revealed that biochar addition enhanced nitrification and inhibited denitrification, and the latter phenomenon was the main reason for reducing N loss during DGW composting. Based on the above results, a potential mechanism model for biochar addition to reduce N loss during the DGW composting process was established.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Wang SP,Wang L,Sun ZY,Wang ST,Shen CH,Tang YQ,Kida Kdoi
10.1016/j.biortech.2021.125492keywords:
["Bacterial community","Biochar","Composting","Distilled grain waste","Maturity","Nitrogen loss"]subject
Has Abstractpub_date
2021-10-01 00:00:00pages
125492eissn
0960-8524issn
1873-2976pii
S0960-8524(21)00832-4journal_volume
337pub_type
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