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Microbial decolorization of azo dyes by Proteus mirabilis
Abstract
A bacterium identified as Proteus mirabilis was isolated from acclimated sludge from a dyeing wastewater treatment plant. This strain rapidly decolorized a deep red azo dye solution (RED RBN). Features of the decolorizing process related to biodegradation and biosorption were also studied. Although P. mirabilis displayed good growth in shake culture, color removal was best in anoxic static cultures. For color removal, the optimal pH and temperature were 6.5-7.5 and 30-35 degrees C, respectively. The organism exhibited a remarkable color removal capability, even at a high concentration of azo dye. More than 95% of azo dye was reduced within 20 h at a dye concentration of 1.0 g L-1. Decolorization appears to proceed primarily by enzymatic reduction associated with a minor portion, 13-17%, of biosorption to inactivated microbial cells.
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Citations
Cited by
Removal of synthetic dyes from wastewaters: a review
Forgacs, E., Cserháti, T., & Oros, G. (2004) · Environment International · doi:10.1016/j.envint.2004.02.001 · Cited by 3,008
Efficiency of various recent wastewater dye removal methods: A review
Katheresan, V., Kansedo, J., & Lau, S. Y. (2018) · Journal of Environmental Chemical Engineering · doi:10.1016/j.jece.2018.06.060 · Cited by 2,752
Bacterial decolorization and degradation of azo dyes: A review
Saratale, R. G., Saratale, G. D., Chang, J. S., & Govindwar, S. P. (2011) · Journal of the Taiwan Institute of Chemical Engineers · doi:10.1016/j.jtice.2010.06.006 · Cited by 1,344
Bacterial decolorization and degradation of azo dyes
Pandey, A., Singh, P., & Iyengar, L. (2007) · International Biodeterioration & Biodegradation · doi:10.1016/j.ibiod.2006.08.006 · Cited by 1,082
Microbial decolorization and degradation of synthetic dyes: a review
Khan, R., Bhawana, P., & Fulekar, M. H. (2013) · Reviews in Environmental Science and Bio/Technology · doi:10.1007/s11157-012-9287-6 · Cited by 448
Metadata
- Authors
- Chen, K.-C., Huang, W.-T., Wu, J.-Y., & Houng, J.-Y.
- Venue
- Journal of Industrial Microbiology and Biotechnology
- Publisher
- Oxford University Press (OUP)
- Published
- 1999-07-01
- Volume
- 23
- Issue
- 1
- Pages
- 686-690
- ISSN
- 1367-5435 (ISSN-L)
- 1476-5535
- OpenAlex
- W2082753555
- Cited by
- 184
- References
- 0
- FWCI
- 0.46
- Type
- journal article
- Language
- en
- Open access
- closed
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- Chen, K.-C., Huang, W.-T., Wu, J.-Y., & Houng, J.-Y. (1999). Microbial decolorization of azo dyes by Proteus mirabilis. Journal of Industrial Microbiology and Biotechnology. https://doi.org/10.1038/sj.jim.2900689
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
