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All Journal International Journal of Engineering, Science and Information Technology
Rangga, Wahyudi
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Biodecolorization of Azo Dye using Trametes sp. UM 12 Isolated from East Kalimantan Wulandari, Retno; Mitha, Mitha; Kahar, Abdul; Heryadi, Eko; Fahmi, Muhammad; Fathoni, Rif'an; Firyaal, Rosa Assyifa; Rangga, Wahyudi
International Journal of Engineering, Science and Information Technology Vol 6, No 1 (2026)
Publisher : Malikussaleh University, Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52088/ijesty.v6i1.1777

Abstract

The textile industry releases substantial amounts of azo dyes, including Reactive Black 5 (RB5), which persist in the environment due to their stable chemical structures and toxic properties. White-rot fungi-based biological treatment serves as an environmentally friendly and affordable method for removing dyes from water through the production of ligninolytic enzymes, including laccases. The research assesses Trametes sp. UM 12's decolourisation ability compared to Phanerochaete chrysosporium for RB 5 decolourisation efficiency. The research examined the effects of pH, temperature, agitation speed, and initial RB5 concentration on fungal decolourisation. The optimal removal of Trametes sp. was achieved at pH 5 and 30–35°C with 150 rpm agitation, resulting in more than 95% colour removal within 48–72 hours, and it reached 99.7% decolourization after 96 hours at 100 mg/L RB5. The process removed 98.7% and 96.8% of the dye at 100 mg/L and 250 mg/L after 120 hours, but only 52.1% and 31.8% at 500 mg/L and 1000 mg/L, respectively. The process shows substrate inhibition and enzyme saturation at high pollutant concentrations. The research shows Trametes sp. UM 12 outstanding performance, making it suitable for treating wastewater in tropical environments. 
Co-Authors Abdul Kahar eko heryadi, eko Fathoni, Rif'an Firyaal, Rosa Assyifa Mitha Mitha, Mitha MUHAMMAD FAHMI Retno Wulandari