"Removal of roxarsone from water by Fe electrocoagulation: Efficacy, me" by Mingyue Sun, Jianbo Lu et al.
Fe electrocoagulation technology was proposed for roxarsone (3-nitro-4-hydroxyphenyl-arsonic acid, ROX) removal from water. The effects of current density (CD) and initial pH on ROX removal and operating costs were evaluated using batch tests. Results showed a high total arsenic (TAs) removal efficiency (≥ 99.5 %) at 40 min (CD 1.75–8.77 A/m2, pH 4.6–8.6). Sludge treatment cost accounted for the highest proportion of total operating costs. High concentrations of HCO3− and humic acid had significant inhibition impacts on TAs removal. Hydroxyl radicals (•OH) were mainly responsible for...
Source: uow.edu.au