Clinoptilolite Assisted Persulfate Decolorization of a Raw Textile Wastewater

Textile wastewater is strong colored and contributes immensely to water pollution if not appropriately treated. However, it is hard to treat by the conventional biological methods if applied singly, hence, the application of a physicochemical technique for the treatment was proposed in this study. Clinoptilolite (CPL) was used in combination with persulfate (PS) as an activator, to catalyze and improve the persulfate oxidation of raw textile wastewater in the process of decolorization. The influence of variation of CPL dosages, initial pH and contact times were investigated when a predetermined persulfate dosage of 4/1(g/g) was used. The system investigated was effective in reducing the residual color concentration by 96% when the initial pH of 4 was applied over a 420 minutes contact time and the CPL and PS dosages of 6/1 and 4/1 were used respectively.