The Potential Application of Light-Emitting Diode on Biodecolorization of Azo Dye

In the previous study, the decolorization of azo dye was significantly enhanced by the light irradiation. The aim of this study is to investigate the effect of methyl orange decolorization under light-emitting diode (LED). The effect of media, pHs, and nitrogens on methyl orange decolorization by freely suspended cells are examined. The results showed that the optimal conditions for the methyl orange decolorization by the Tsukamurella sp. J8025 are incubation at 30 °C and pH 8.0 in YEME medium under white-light LED.