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Population dynamics of methanogens and methane formation associated with different loading rates of organic acids along with ammonia: redundancy analysis SCIE SCOPUS

Title
Population dynamics of methanogens and methane formation associated with different loading rates of organic acids along with ammonia: redundancy analysis
Authors
Kim, WShin, SGCho, KHan, GHwang, S
Date Issued
2014-05
Publisher
SPRINGER
Abstract
In anaerobic processes, the population dynamics of methanogens in the methanogenic stage were monitored along with hydraulic retention times (HRTs) shift. Decreasing HRTs increased the loading rates of volatile fatty acids (VFAs) and ammonia. Methanomicrobiales (MMB) began to be dominant at longer than 12.5 days HRT, Methanosarcinales (MSL) were dominant at 8, 10, and 12.5 days HRT, and Methanobacteriales (MBT) were dominant at shorter than 6 days HRT. Increased loading rates of VFAs and ammonia increased MBT, decreased MMB, and had no significant effect on MSL. Maximal daily methane production was observed at 1.57 L/L when MSL copy numbers also reached 3.60 x 10(7) copy/mL as a peak, which were expressed as positive correlation between DMA and MSL. No sooner had methane yield (MY) increased from 1.15 to 1.32 L/g VSremoved along with HRT reduction from 25 to 22.5 days, then MY gradually decreased from 1.32 to 0.04 L/g VSremoved.
URI
https://oasis.postech.ac.kr/handle/2014.oak/13985
DOI
10.1007/S00449-013-1061-9
ISSN
1615-7591
Article Type
Article
Citation
BIOPROCESS AND BIOSYSTEMS ENGINEERING, vol. 37, no. 5, page. 977 - 981, 2014-05
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황석환HWANG, SEOK HWAN
Div of Environmental Science & Enginrg
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