The study focuses on treatment of textile wastewater using Electro-Fenton process using graphite electrodes. The
maximum removal of chemical oxygen demand and colour was evaluated at various operating conditions namely pH, Fe2+ dosage,
and applied current. The Central composite design was used to optimize the operating conditions for the maximum removal of
chemical oxygen demand and colour. The derived model represents good agreement between predicted and experimental results.
Maximum reduction of chemical oxygen demand (83.6 %) and color (95.1 %) was achieved at pH 3.5, Fe2+ dosage 0.6 mM, and
applied current of 0.6 A with electrolysis time of 40 mins. The second order reaction kinetics fit well with experimental data along
with values of rate constants 0.0001 and 0.4827 (L/mg min) and R2 values were 0.9577 and 0.9173 for chemical oxygen demand
and color removal, respectively.
Key words: Electro-Fenton process, Textile wastewater, Response surface methodology, Central composite design, Applied current
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