Abstract
Multi-Contact Glow Discharge Electrolysis (m-CGDE) technique have successfully degraded linear alkylbenzene sulfonate (LAS) surfactant with high efficiency. The degradation process was conducted in 0.02M electrolyte solution NaOH with electrical voltage at 800V and anode at 10mm depth. The anode number and addition of Fe2+ ion greatly influenced the efficiency of the degradation. In the experiment using number of anode of 4, the percentage of LAS degradation achieved approximately 99.46% in 90min, with energy consumption of 721.06kJ/mmol. The addition of Fe2+ ions will increase the LAS degradation, by using 40mg/L of Fe2+ ions in the reactor, LAS was degraded approximately 97.95% and 807.82kJ/mol energy consumed during the operation.
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