11 0

Low pH treatment of starch industry effluent with bacteria from leaf debris for methane production

Title
Low pH treatment of starch industry effluent with bacteria from leaf debris for methane production
Author
전병훈
Keywords
acidic treatment; bioreactor; kinetics; methanogenesis; starch wastewater
Issue Date
2019-05
Publisher
WILEY
Citation
WATER ENVIRONMENT RESEARCH, v. 91, NO 5, Page. 377-385
Abstract
Cornstarch industry generates a huge amount of acidic effluent, that is, 5-11 M-3/Mt grinding, with a high load of chemical oxygen demand, 6000-19000 mg/L. The acidic effluent requires neutralization making the treatment process expensive. Methanogenesis under the acidic environment (pH 5-5.5) can reduce the cost of operation as well as treatment time. This research focuses on the evaluation of the optimum condition of COD reduction and methane generation simultaneously from leaf debris sludge using Box-Behnken model. Three 1 L bioreactors were seeded with 5000-10000 mg/L inoculum and operated at different pH 4.0-7.0 for 72 hr up to 10 cycles. The production of methane was found maximum 2980 ml after treating the wastewater from the starch industry at pH 5.57 and 9612.9 mg biomass load at 62.4 hr. The high reduction rate of around 97% shows there is ample opportunity for further research on low pH treatment of waste along with recovery as methane. (C) 2018 Water Environment Federation
URI
https://onlinelibrary.wiley.com/doi/full/10.1002/wer.1033http://repository.hanyang.ac.kr/handle/20.500.11754/111921
ISSN
1061-4303; 1554-7531
DOI
10.1002/wer.1033
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > EARTH RESOURCES AND ENVIRONMENTAL ENGINEERING(자원환경공학과) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE