Ensiling excessively wilted maize stover with biogas slurry: Effects on storage performance and subsequent biogas potential.

Clicks: 291
ID: 99003
2020
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Abstract
This study evaluated the ensiling performance of excessively wilted maize stover (EWMS) with biogas slurries and the effect on the subsequent biomethane potential. Chicken and pig manure biogas slurries with or without solid-liquid separation were used to amend the stover humidity before ensiling for 60 d. The hetero-lactic-acid fermentative bacteria Atopostipes and Lactobacillus were enriched by the biogas slurry regardless of the solid-liquid separation. Significant increases in the total organic-acid content were observed in silages with chicken (41%) and pig (15%) manure biogas slurries without solid-liquid separation, which was not the case for treatments with solid-liquid separation. During the ensiling process, more lignocellulose was degraded under the high buffer-capacity provided by the ammonia-nitrogen in the biogas slurry. An increase of 7.1%-9.6% was observed for the specific methane yield, which offset a storage loss of 5.0%-7.3%. Ensiling EWMS with biogas slurry therefore provides a viable strategy for biogas production.
Reference Key
sun2020ensilingbioresource Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Sun, Hui;Cui, Xian;Stinner, Walter;Zhang, Leping;Ju, Xinxin;Guo, Jianbin;Dong, Renjie;
Journal Bioresource technology
Year 2020
DOI
S0960-8524(20)30311-4
URL
Keywords
microbial community ensiling biogas production biogas slurry maize stover

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