Application of renewable energy in sanitizer industry wastewater treatment through combined photo-Fenton and electro-Fenton processes

This study investigates the treatment of dyes AY36 and AB80 using photo-Fenton (PF) and Electro-Fenton (EF) systems, powered by an off-grid photovoltaic system. Employing PF (400 mg∙L-1 H2O2) with EF, degradation reached 71.47% and 85.64% at 436 and 624 nm. The introduced off-grid photovoltaic system ensured energy supply. Notably, a reduction of 53.56% in BOD and 9.90% in COD was observed in the analyzed effluent. The integrated of PF and EF, energized by a photovoltaic panel, not only demonstrated energy efficiency but also emphasized the sustainability of the treatment, aligning with environmentally friendly and renewable energy principles in wastewater treatment. [Display omitted] •PF and EF synergy achieved 85.64% degradation at 624 nm.•Off-grid photovoltaic system enhanced energy-efficient wastewater treatment.•Combined PF and EF reduced BOD by 53.56% and COD by 9.90%.•Sustainable amalgamation of AOPs highlights eco-friendly methodology.