期刊
ULTRASONICS SONOCHEMISTRY
卷 36, 期 -, 页码 168-172出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ultsonch.2016.11.023
关键词
Low-strength ultrasonication; Hydrolytic enzyme; Methanogenic granule; Upflow anaerobic sludge blanket
资金
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT & Future Planning [NRF-2015R1C1A1A01051692]
- Korea Institute of Energy Technology Evaluation and Planning (KETEP) [20163030091540]
- Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea [20163030091540]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20163030091540] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
In our previous studies, enhanced methane (CH4) production using low-strength ultrasonication was achieved and the results were evidenced by physico-chemical and molecular biological approaches. As a final continuation study, the effects of low-strength ultrasonication on the activities of hydrolytic enzymes (amylase, cellulase, and protease) were investigated on methanogenic granules given that hydrolysis regulates the whole anaerobic digestion (AD) process. Up to 213% enhanced hydrolytic enzyme activities were observed, and they seem to be highly related to the enhanced CH4 production. However, the effects of ultrasonication on the distribution (liquid- and solid-phases) of hydrolytic enzymes were negligible. Enzymatic activation by low-strength ultrasonication was hypothetically caused by acoustic streaming, presumably enabling to overcome the masking effect, substrate inhibition and spatial constraint. (C) 2016 Elsevier B.V. All rights reserved.
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