Highly efficient decolorization of Malachite Green by a novel Micrococcus sp. strain BD15.

Environmental Science and Pollution Research International
Lin-Na DuYu-Hua Zhao

Abstract

Malachite Green (MG) is used for a variety of applications but is also known to be carcinogenic and mutagenic. In this study, a novel Micrococcus sp. (strain BD15) was observed to efficiently decolorize MG. The purposes of this study were to explore the optimal conditions for decolorization and to evaluate the potential use of this strain for MG decolorization. Optical microscope and UV-visible analyses were carried out to determine whether the decolorization was due to biosorption or biodegradation. A Plackett-Burman design was employed to investigate the effect of various parameters on decolorization, and response surface methodology was then used to explore the optimal decolorization conditions. Kinetics analysis and antimicrobial activity tests were also performed. The results indicated that the decolorization by the strain was mainly due to biodegradation. Concentrations of MG, urea, and yeast extract and inoculum size had significantly positive effects on MG decolorization, while concentrations of CuCl(2) and MgCl(2), and temperature had significantly negative effects. The interaction between different parameters could significantly affect decolorization, and the optimal conditions for decolorization were 1.0 g/L urea, 0....Continue Reading

References

May 8, 2004·Aquatic Toxicology·Shivaji SrivastavaD Roy
May 15, 2009·Environmental Science and Pollution Research International·Lyudmila LyubenovaPeter Schröder
May 30, 2009·Ecotoxicology and Environmental Safety·Xiaoyan LinYangyang Dong
Jun 29, 2010·Biodegradation·Sikandar I MullaHarichandra Z Ninnekar

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Citations

Jul 24, 2013·Bioresource Technology·Guo-Ying LvLei-Fa Fan
Aug 26, 2014·Environmental Technology·G BoduroğluG Dönmez
May 18, 2018·PloS One·Wanda MączkaMarek Durajczyk

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