Proxy Electrochemical Process for Acid Red 18 Dye Removal


Abstract:

The goal of this research is to investigate of acid red18(AR18) dye from urban drinking water by batch proxy electrochemical reactor with using zinc-copper electrode (distance 2 cm) and hydrogen peroxide. The variables include pH(4-10), concentration of AR18(100-300mg/L), reaction time(15-45min), concentration of hydrogen peroxide(0.5-1.5 mg/L), and current density(3-9 mA/cm2). In electrochemical reactor, the removal percentage for AR18 concentration(100mg/L) in current density 9 mA/cm2 and electrolysis time 15min in pHs 4, 7, and 10 are obtained 66%, 61%, and 56%, respectively. In proxy electrochemical reactor, the removal percentage for AR18 concentration(100 mg/L), in optimum conditions, in hydrogen peroxide concentration 1.5mg/L, current density9 mA/cm2, optimum pH 4, electrolysis time 15min in AR18concentrations 100, 200, and 300 are obtained 100%, 98%, and 88%, respectively. The findings indicate that AR18removal efficiency is increased with increasing current density, electrolysis time, and decreasing AR18concentration. Proxy electrochemical method has appropriate efficiency for the AR18 removal from water.

Keywords: Acid red 18, Dye, Hydrogen peroxide, Proxy electrochemical, Urban drinking water.

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