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KMID : 0380020070220030157
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Korean Journal of Biotechnology and Bioengineering
2007 Volume.22 No. 3 p.157 ~ p.161
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Bacterial Degradation of Monoethanolamine
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Hyun Jun-Taek
Rhee In-Hyoung
Kwon Sung-Hyun
Kim Dong-Jin
Cho Dae-Chul
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Abstract
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This study is to investigate the biological degradation and the characteristics of MEA, a pH regulator to be put in the cooling water circulation system for power plants, loading to elevate concentrations of COD and N when eluted into the water environment. MEA, NH4+ and CODcr were monitored in flask cultures and in a batch aerator. MEA was found to be biologically degradable, producing substantial amount of ammonia (max. 78.1%) in a form of NH4+ and other carboneous intermediates. The degradation reaction rates were similar one another over all MEA concentrations tested as the activated sludge (microbial consortium) was acclimated to MEA with the gradual and stepwise increase in MEA input into the batch aerator. Also, MLVSS kept increasing with increasing MEA input. The COD-based degradation reaction order was determined to be 1.
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KEYWORD
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Monoethanolamine, Activated Sludge, P. aeruginosa, Biodegradation, CODcr, NH4+, MLVSS
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