Anodic Surface Treatment on Activated Carbons for Removal of Chromium(VI)

Activated carbons and low cost adsorbents for remediation of tri- and hexavalent chromium from water

“…The effect of anodic surface treatment of activated carbons on their Cr(VI) adsorption properties under reaction-treatment time conditions with 35 wt.% HCl solution was investigated [75]. The acidic surface functional groups increased with increasing HCl reaction-treatment time.…”

Influence of anodic treatment on heavy metal ion removal by activated carbon fibers

“…This electrochemical process requires neither chemical pretesting nor chemical adjustment of the wastewater and little space, and produces fewer by-products and less sludge. The electrochemical oxidation was reported to result in oxygenated products or in electophilic species readily reacting with unsaturated compounds, depending on the experimental conditions [9][10][11]. The oxidized carbons possess some unique properties caused by oxygen-containing functional groups such as carboxylic, lactonic, and phenolic groups on their surfaces [12,13].…”

Surface properties of chemically modified activated carbons for adsorption rate of Cr (VI)

“…Adsorption is one of the effective techniques for chromium removal from wastewater. Many researchers have suggested that activated carbons could be used for the removal of hexavalent chromium in the wastewater solution [14][15][16][17][18]. They have certificated that the pH and chromium concentration of solution affect the adsorption quality and remove rate of Cr (VI).…”