EFFECT OF DOSAGE OF ADSORBENT (MANGANESE DIOXIDE) ON THE REMOVAL OF IRON FROM WATER

Title: EFFECT OF DOSAGE OF ADSORBENT (MANGANESE DIOXIDE) ON THE REMOVAL OF IRON FROM WATER

Author(s): Edori E. S. and Bekee D.

ABSTRACT

Adsorption of iron in water by manganese dioxide was studied using different adsorbent dosages. The research work was restricted to laboratory scale whereby the iron in water was complexed with ethylene diaminetetraacetic acid (EDTA). The amount of iron adsorbed was determined by varying the amount of manganese dioxide adsorbent to see its effect on the removal of iron. The removal of iron was found to have resulted from; adsorption and oxidation/filtration by the manganese dioxide. The complexation titration of the water sample was treated with 2.00, 2.50, 3.00, 3.50, 4.00, 5.00, 8.00 and 10.00g adsorbents of manganese dioxide at volumetric flow rates of; 1.90, 2.00, 3.50, 3.60, and 10.00ml/min. at varying time intervals. The work showed that, at the same volumetric flow rate with varying dosage adsorbents, the higher dosage removed iron better than the lower adsorbents. The research proved that even at increased volumetric flow rate of 10.00ml/min. with 10.00g adsorbent there was no detection of iron in the treated water sample. Therefore increased adsorbent dosages increased the rate of iron adsorption from water and hence its removal.    

Keywords: complexometric titration, dosage adsorbent, EDTA-volumetric method, treated water sample, manganese dioxide, iron

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