Corrugated iron sheets for electrocoagulation of sulphate ions in industrial effluents
Siyanda Yamba, Richard M. Moutloali, Nonhlangabezo Mabuba
Abstract
High sulphate concentrations in industrial effluents damage municipality infrastructures. Old corrugated iron was used as an electrode to remove SO42-concentration in industrial effluents. Electrodes were characterized using SEM and EDS. The optimised parameters were pH 2, 3000 ppm, 15 V and 120 min. In an industrial effluent, 99% of SO42- was removed including PO42-, F- and COD. The sulphates were physically adsorbed on Zn and Fe hydroxides according to first order kinetics. The corrugated iron is reusable and consumed low energy (0.1725 kWh/m3).
Topics & Concepts
EffluentElectrocoagulationIndustrial effluentAdsorptionChemistryEnvironmental chemistryPulp and paper industryMetallurgyEnvironmental scienceEnvironmental engineeringMaterials scienceEngineeringOrganic chemistryAdvanced oxidation water treatmentWater Treatment and DisinfectionMine drainage and remediation techniques