Removal and Electrochemical Investigation of Congo Red Dye in Aqueous Solutions by Using Bentonite

Abstract

Textile industry is a source of polluted water with many types of dyes., the Congo red tincture is among them. Putity of water can be noticeably affected by the presence of these dyes. Consequently, there must be an effective methods to remove dyes from water produced from the textile industry. Adsorption and many other methods were used to do the duty. In adsorption method, the cheap and affordable materials would be better. Bentonite is the one who have these qualities with a PH value of (2-10). The results showed that the change in weight of the adsorbent substance is about (0.25-2g). The changing of the initial focus within a range of (5-30 mg/l). The range of time periods is (30-240min). It was conducted that 240 min was the highest value of adsorption of Congored tincture on the Bentonite surface. The electrochemical behaviour of adsorption method of Congored dye with bentonite as a surface was monitored using the technology of cyclic voltammetry. The results illustrated that there was an increase in the oxidation process.