Arsenic Removal From Potable Water

Abstract

In some parts of the US, but mainly in desert areas, the arsenic content of the drinking‐water supply, if not imminently harmful, is undesirably high. When alternate, unadulterated sources are not available, it may be worthwhile to remove the unwanted chemical. Here is a method that can drop arsenic levels well below safe standards at a moderate cost.

Adsorption of arsenate on Cu/Mg/Fe/La layered double hydroxide from aqueous solutions

“…Among these, adsorption technique is regarded as one of the most popular and practical methods with high efficiency, low cost and reusable characteristics [10,11]. More and more attentions have been paid on the development of different effective adsorbents to control the arsenic pollution including zeolites [12], activated alumina [13], anionic clays [14], maghemite [15], activated carbon [16] and other novel adsorbents. In recent years, a number of studies have focused on the arsenic adsorption onto layered double hydroxide (LDH) materials [17][18][19].…”

Adsorption of fluoride, chloride, bromide, and bromate ions on a novel ion exchanger

“…The viability of the last method is dependent completely on the development of adsorptive materials. In contrast to the materials widely used for anion removal (activated alumina [11,12], activated carbon [13,14], and ion-exchange resins [15]), inorganic ion exchangers are considered the most prospective because of their chemical stability and possible ability to control surface chemistry [16][17][18][19].…”

Adsorption of Fluoride, Phosphate, and Arsenate Ions on a New Type of Ion Exchange Fiber

“…The viability of this method is dependent on the development of adsorptive materials. The adsorbents most often used for the removal of fluoride, phosphate, and arsenate are activated alumina (13)(14)(15), activated carbon (16,17), and other materials (18)(19)(20). However, as a result of lower adsorption capacity and poor adsorption kinetic property, these adsorbents cannot be widely used.…”