Experimental Studies on Adsorption of High Manganese Groundwater
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Abstract:
The granular activated carbon, powdered activated carbon, and activated carbon-loaded chitosan were used in the static adsorption experiment of high Mn groundwater, and the granular activated carbon was used in the dynamic adsorption experiment of high Mn groundwater, which can determine the effects of adsorbent dosage, pH value, and temperature on the adsorption efficacy under the static conditions and the effects of Mn2+ concentration and flow velocity on the adsorption efficacy under the dynamic conditions. The results showed that the adsorption efficacy is similar for the three adsorbents with the powered activated carbon having a relatively better adsorption efficacy. Under the static conditions with the Mn2+ concentration of 5 mg/L, temperature of 25 o C, and pH value of 6.8~7.0, the granular activated carbon had the best adsorption efficacy and the best dosage was 0.02 g/L, i.e. 0.4g ( GAC ) /mg ( Mn2+ ). Under the dynamic conditions，the increasing of Mn2+ concentration and flow velocity can advance the initial penetration point．
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