Effects of water chemistry on arsenic removal from drinking water by electrocoagulation

Electrocoagulation for COD and diesel removal from oily wastewater

“…The EC is a technology that has been effectively used to treat industrial wastewater containing different pollutants such as arsenic, phosphate, boron, dyes and viruses. Furthermore, it has been effective in breaking oil emulsions in water and treating paper mill effluent, olive mill effluent, landfill leachate and dairy effluent (Bensadok et al 2008;Irdemez et al 2006;Katal and Pahlavanzadeh 2011;Khoufi et al 2007;Li et al 2011;Azadi Aghdam et al 2015;Phalakornkule et al 2010;Sengil and Ozacar 2006;Tchamango et al 2010;Wan et al 2011;Yilmaz et al 2008;Zhu et al 2005;Amani-Ghadim et al 2013).…”

Metallic iron for water treatment: leaving the valley of confusion

“…However, properly modeling the behavior of Fe 0 filters goes exclusively through the characterization of the long-term kinetics of relevant particles and field conditions (Lu et al 2016;Sun et al 2016). 2+ species are reported to form hydrous ferric oxide (HFO) upon oxidation and As adsorbed on HFO is efficiently removed by a (subsequent) sand filtration (Gottinger et al 2013;Kowalski and Søgaard, 2014;Wan et al 2016). In other words, Fe 0 is oxidized by water to certainly produce efficient As adsorbents (including HFO).…”

Factors affecting the Faradaic efficiency of Fe(0) electrocoagulation

“…In addition to single and binary anion electrolyte solutions, we also prepared a series of synthetic groundwater matrices (Table 2), which were designed to mimic a range of contaminated groundwaters that are candidates for Fe(0) EC field treatment [34][35][36][37][38]. For arsenic contaminated groundwater (pH 7.5), we prepared a synthetic Bangladesh groundwater (SBGW) electrolyte solution following a recipe derived from a British Geological Survey analysis of thousands of groundwater wells in Bangladesh [39].…”