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Cited 2 time in webofscience Cited 4 time in scopus
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Complex network analysis of slaughterhouse waste anaerobic digestion: From failure to success of long-term operation

Authors
Dalantai, TergelRhee, ChaeyoungKim, Dae WookIl Yu, SungShin, JuheeTriolo, Jin MiShin, Seung Gu
Issue Date
Oct-2022
Publisher
ELSEVIER SCI LTD
Keywords
Ammonia; Co-inhibition; Solid-state digestion; Network analysis; Organic loading rate
Citation
BIORESOURCE TECHNOLOGY, v.361
Indexed
SCIE
SCOPUS
Journal Title
BIORESOURCE TECHNOLOGY
Volume
361
URI
https://scholarworks.bwise.kr/gnu/handle/sw.gnu/850
DOI
10.1016/j.biortech.2022.127673
ISSN
0960-8524
Abstract
The study explored slaughterhouse waste (SHW) as prime feedstock associated with and without supplement of an external slowly degradable lignocellulosic carbon source to overcome the synergistic co-inhibitions of ammonia and fatty acids. Long-term solid-state digestion (SSD) and liquid-state digestion (LSD) were investi-gated using a mixture of pork liver and fat. At 2.0 g volatile solids (VS) L-1 d-1 of organic loading rate (OLR), the two reactors of SSD experienced operational instability due to ammonia inhibition and volatile fatty acid (VFA) accumulation while LSD successfully produced 0.725 CH4 L CH4 g- 1VS during 197 d of working days under unfavorable condition with high total ammonia nitrogen (> 4.7 g/L) and VFAs concentration (> 1.9 g/L). The network analysis between complex microflora and operational parameters provided an insight for sustainable biogas production using SHW. Among all, hydrogenotrophic methanogens have shown better resistance than acetoclastic methanogens.
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공과대학 (에너지공학과)
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