Arsenic and fluoride contaminated groundwaters: A review of current technologies for contaminants removal

Experimental and Modeling Assessment of Sulfate and Arsenic Removal from Mining Wastewater by Nanofiltration

“…A recent effort to solve the disposal of concentrated arsenic focuses on hybrid nanofiltration-coagulation system in which arsenic was first stabilized by Ca and Fe salts to form insoluble Ca-Fe-AsO 4 compound followed by separation by nanofiltration (Pal, Chakrabortty, and Linnanen 2014). Other suggestions to avoid water recontamination includes encapsulation on nano-sized adsorbents to selectively isolate arsenic hazards (Jadhav et al 2015).…”

Performance of Mn2+ modified Bentonite Clay for the Removal of Fluoride from Aqueous Solution

“…3 Fluorosis is an incurable disease and it is now regarded as a global health problem with countries such as India, China, Mexico, Pakistan, Ethiopia and Egypt largely affected. 4,5 Defluoridation is the viable option for areas that have groundwater containing fluoride concentration greater than World Health Organization standard of 1.5 mg L -1 . 3 Several authors have identified adsorption as suitable method for defluoridation in rural areas because it uses materials that are available at little or no cost and it is easy to operate.…”

Risk assessment of arsenic in ground water of Larkana city

“…Mobilization of As in atmosphere has many factors such as natural ways like weathering of rocks, eruption of volcanoes and degradation of biological activities (Mukherjee & Fryar, 2008). The man-made activities like combustion of fuel, coal, coke, using insecticides, herbicides, crop disinfectant medicine and other anthropogenic activates as smelting, mining and an additive usage of As to livestock feed for poultry as well as for wood preservative (Haque, Nabi, Baig, Hayat, & Trefry, 2008;Jadhav et al, 2015). The contamination of As in groundwater has become a grave concern of water purity in large areas of the world, especially in Bengal.…”