Degradation of dye crystal violet released from the textile industry

Abstract

Textile industry wastewater is a significant source of pollution, often containing hazardous organic dyes like Crystal Violet (CV). Photocatalytic degradation using semiconductor materials such as titanium dioxide (TiO2) presents a promising solution for wastewater treatment due to its effectiveness in breaking down organic pollutants under UV irradiation. This study investigates the efficiency of TiO2 as a catalyst for the photodegradation of CV removed from textile wastewater. Experimental trials were conducted in a batch reactor under UV irradiation, with CV (20 ppm) and varying concentrations of TiO2 catalyst. Results revealed a significant reduction in CV concentration with increasing catalyst dosage (to 0.1 g/L) and irradiation time. The optimal conditions for maximum degradation efficiency were determined, highlighting the potential of TiO2 photocatalysis for textile wastewater treatment. Furthermore, the kinetics of CV degradation were analyzed to understand the reaction mechanism and rate. The degradation of the dye (20 ppm) was 98% for 95 min with 0.1 mg/L TiO2. This research contributes to developing sustainable and efficient methods for treating textile wastewater, addressing environmental concerns associated with dye pollution.