Biodegradation kinetics of peptone and 2,6-dihydroxybenzoic acid by acclimated dual microbial culture

被引:36
|
作者
Cokgor, Emine Ubay [1 ]
Insel, Guclu [1 ]
Katipoglu, Tugce [1 ]
Orhon, Derin [1 ,2 ]
机构
[1] Istanbul Tech Univ, Fac Civil Engn, Dept Environm Engn, TR-34469 Istanbul, Turkey
[2] Turkish Acad Sci, TR-06550 Ankara, Turkey
关键词
2,6-Dihydroxybenzoic acid; Biodegradation; process kinetics; Acclimated culture; dual biomass; MILL WASTE-WATER; ACTIVATED-SLUDGE; RESPIROMETRIC EVALUATION; GROWTH; IDENTIFICATION;
D O I
10.1016/j.biortech.2010.07.112
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
This study evaluated the kinetics of simultaneous biodegradation of peptone mixture and 2,6-dihydroxybenzoic acid (2,6-DHBA) by an acclimated dual microbial culture under aerobic conditions. A laboratory-scale sequencing batch reactor was sustained at steady-state with peptone mixture feeding. During the study period, peptone mixture feeding was continuously supplemented with 2,6-DHBA. Related experimental data were derived from three sets of parallel batch reactors, the first fed with the peptone mixture, the second with 2,6-DHBA and the third one with the two substrates, after acclimation of microbial culture and simultaneous biodegradation of both organics. A mechanistic model was developed for this purpose including the necessary model components and process kinetics for the model calibration of relevant experimental data. Model evaluation provided all biodegradation characteristics and kinetics for both peptone mixture and 2,6-DHBA. It also supported the development of a dual microbial community through acclimation, with the selective growth of a second group of microorganisms specifically capable of metabolizing 2,6-DHBA as an organic carbon source. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码:567 / 575
页数:9
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