Assessing the Removal of Arsenite and Arsenate Mixtures from the Synthetic Bangladesh Groundwater (SBGW) Using Combined Fe(VI)/Fe(III) Treatments and Local Regression Analysis

Arsenic is an inorganic pollutant that, depending on oxidation–reduction and pH level conditions, may be found in natural waters two variants: As(III) As(V). Any treatment to effectively remove arsenic from water will conditioned by the presence of one or both variants. In this context, study assesses using electrochemically produced Fe(VI) with Fe(III) As(III), As(V), their combinations Synthetic Bangladesh Groundwater (SBGW) containing anions that interfere iron-based removal processes. The combined use allowed us total below 10 mg L−1 threshold established World Health Organization Peruvian regulations for drinking water. An optimum combination 1 30 was identified tested four different proportions As(III):As(V) concentrations: 500 250 L−1. There were no significant differences final values under each concentration, a average 99.0% 96.9% µg concentrations, respectively.