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The characteristic of adsorption of As(V) onto ferric oxide-impregnated anion resin Dowex marathon MSA (FO-Dowex) was investigated. Batch adsorption experiment was studied as a function of pH, contact time, initial As(V) concentration, and temperature. The results revealed that the adsorption of As(V) onto FO-Dowex was highly pH-dependent and that the equilibrium time was attained within 360 min....
Pyrite ash (PA), a waste produced during the roasting of pyrite ores to produce sulfuric acid, was studied as a potential adsorbent for removing arsenic (As) from groundwater. The collected pyrite ash waste samples contained >86 % iron (as Fe2O3). The results indicate that adsorption of As by PA was only slightly affected by initial pH at pH ≤ 9. Arsenate removal efficiency increased with the amount...
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