Original scientific paper
https://doi.org/10.33765/thate.16.1.2
Published in: Holistic Approach Environ. 16(2026) 1, pp. 16 – 26
Paper reference number: HAE-2515
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REMEDIATION OF NAVY BLUE RX DYE USING BIOLOGICAL AND ADVANCED OXIDATION PROCESS
Anju Angel James*, Tara Menon*
* SIES College of Arts, Science and Commerce, Sion West, Mumbai, Maharashtra, India
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ABSTRACT
Synthetic dyes used in the textile industry are causing worldwide concern due to their harmful impact on the environment. In this study, microorganisms capable of decolourizing Navy Blue RX dye were isolated from textile effluent samples and identified using 16S rRNA sequencing. The effects of temperature, pH, initial dye concentrations and mechanical agitation on the dye decolourization ability of individual organisms and their consortia were examined. For improved storage, stability and utility, the organisms were inoculated and incubated with solid substrates – rice flour and compost, and dried to obtain a powdered formulation. Treatment with only a microbial formulation requires a longer time and does not result in complete dye remediation. Therefore, advanced oxidation process, such as the Fenton process and ozonation, was combined with microbial treatment. The effect of different treatment methods and their combinations was analysed by checking the percentage of decolourization using a UV spectrophotometer. Analysis of control and treated samples by gas chromatography-mass spectrometry confirmed the degradation of the parent dye. According to this study, ozonation combined with microbial treatment results in about 98 % decolourization of Navy Blue RX dye.
Keywords: Navy Blue RX, microbial treatment, Fenton process, ozonation
This work is licensed under a Creative Commons Attribution 4.0 International License.
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