Removal of hexavalent chromium from aqueous solutions by D301, D314 and D354 anion-exchange resins

Removal of Cr(VI) using iron nanoparticles supported on porous cation-exchange resin

“…Among other methods used for removal of Cr(VI) from water, the methods based on anion exchange resin for the removal of metal ions from aqueous media are generally advantageous over the other techniques because of better selectivity of resins for metals, production of less sludge volume, and compliance with strict discharge specifications (Shi et al, 2009). Several researches on anion exchange resins have been reported in literature (Gurgel et al, 2009;Pehlivan and Cetin, 2009;Shi et al, 2009). The main disadvantage of anion exchange resin is the involvement of highly toxic chemicals in the production of anion exchange resin, which endangers our environment as well as raises the cost of the resin.…”

Study of kinetic and fixed bed operation of removal of sulfate anions from an industrial wastewater by an anion exchange resin

“…Their results showed this resin is an effective adsorbent for the removal of nitrates from aqueous solution with 96% removal efficiency. Shi et al [19] studied the removal of hexavalent chromium from aqueous solutions by D301, D314 and D354 anion exchange resins. They investigated the effect of parameters such as initial Cr 6+ concentration, agitation time, pH, resin amount, temperature and kinetic on adsorption and concluded that such ion exchanges have perfect effect on removal of chromium in the pH ranges of 1-5.…”

Removal of Cr(III) from Synthetic Wastewater by using a Strong Cation Exchange Resin

“…Görüldüğü gibi, Cr(III)'ün sorpsiyon verimliliği reçine miktarı 0.1 ile 1.0 gram arasında artmış (% 99) ve 1.0 gramdan sonra önemli bir değişiklik olmamıştır. Reçine miktarı arttıkça sorpsiyon verimliliğinin artışının sebebi reçine miktarının artmasıyla reçine yüzeyindeki sorpsiyon merkezlerinin de artmasıdır (Du and Hayashi, 2006;Alyüz and Veli, 2009;Shi et al, 2009). Öte yandan reçine miktarının artışıyla sorpsiyon kapasitesi azalmıştır.…”

“…Kinetik eşitlikler kullanılarak (Rengaraj et al, 2001;Gode and Pehlivan, 2003;Gode and Pehlivan, 2006;Shi et al, 2009;Pehlivan and Çetin, 2009) …”