A comparative study on the process efficiencies and microbial community structures of six full-scale wet and semi-dry anaerobic digesters treating food wastes
SCIE
SCOPUS
- Title
- A comparative study on the process efficiencies and microbial community structures of six full-scale wet and semi-dry anaerobic digesters treating food wastes
- Authors
- HAN, GYU SEONG; SHIN, SEUNG GU; JOONYEOB, LEE; SHIN, JUHEE; HWANG, SEOK HWAN
- Date Issued
- 2017-12
- Publisher
- ELSEVIER SCI LTD
- Abstract
- The purpose of this study was to investigate the effect of different types of food wastes on the process efficiency and microbial community structures in full-scale anaerobic digesters and to identify parameters that affect these criteria. Six full-scale anaerobic digesters were investigated; three were operated under "wet" condition (total solids TS <= 10%), and three were run under "semi-dry" condition (10% <= TS <= 20%). Removal efficiency of volatile solids was much higher in the wet digesters (75.2 +/- 3.8%) than in the semi-dry digesters (42.6 +/- 5.5%). The bacterial and archaeal communities were distinctly characterized by families Porphyromonadaceae, Sphingobacteriaceae, Syntrophomonadaceae, and Methanobacteriaceae in the wet digesters; and of Clostridiaceae, Patulibacteraceae, Pseudonocardiaceae, Lachnospiraceae, Rikenellaceae, and Methanomicrobiaceae in the semi-dry digesters. The discriminant parameters identified were TS content of influent, concentration of total ammonia nitrogen and the ratio of soluble chemical oxygen demand (COD) to COD in the digester.
- Keywords
- TS content; Solubilization rate; Pyrosequencing; Process parameter
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/41358
- DOI
- 10.1016/j.biortech.2017.08.167
- ISSN
- 0960-8524
- Article Type
- Article
- Citation
- BIORESOURCE TECHNOLOGY, vol. 245, page. 869 - 875, 2017-12
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