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Lee, Changsoo
Applied Biotechnology Lab for Environment (ABLE)
Research Interests
  • Bioconversion, Bioenergy, Biogas, Biological treatment, Biorefinery, Microbial community

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A comprehensive microbial insight into two-stage anaerobic digestion of food waste-recycling wastewater

Cited 42 times inthomson ciCited 38 times inthomson ci
Title
A comprehensive microbial insight into two-stage anaerobic digestion of food waste-recycling wastewater
Author
Shin, Seung GuHan, GyuseongLim, JuntaekLee, ChangsooHwang, Seokhwan
Keywords
Anaerobic digestion; Denaturing gradient gel electrophoresis; Food waste-recycling wastewater; Non-metric multidimensional scaling; Two-stage process
Issue Date
2010-09
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
WATER RESEARCH, v.44, no.17, pp.4838 - 4849
Abstract
Microbial community structures were assessed in a two-stage anaerobic digestion system treating food waste-recycling wastewater. The reactors were operated for 390 d at 10 different hydraulic retention times (HRTs) ranging from 25 to 4 d. Stable operation was achieved with the overall chemical oxygen demand (COD) removal efficiency of 73.0-85.9% at organic loading rate of up to 35.6 g COD/L.d. Performance of the acidogenic reactors, however, changed significantly during operation. This change coincided with transition of the bacterial community from one dominated by Aeriscardovia- and Lactobacillus amylovorus-related species to one dominated by Lactobacillus acetotolerans- and Lactobacillus kefiri-like organisms. In methanogenic reactors, the microbial community structures also changed at this stage along with the shift from Methanoculleus- to Methanosarcina-like organisms. This trend was confirmed by the non-metric multidimensional scaling joint plot of microbial shifts along with performance parameters. These results indicated that the overall process performance was relatively stable compared to the dynamic changes in the microbial structures and the acidogenic performance.
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DOI
10.1016/j.watres.2010.07.019
ISSN
0043-1354
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UEE_Journal Papers
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