Journal article Open Access

REMOVAL OF FLUORIDE FROM AQUEOUS SOLUTION USING FIRED CLAY SOIL PILLARED WITH TEA LEAF ASH COMPONENTS

Kebena Gebeyehu Motora1*, Dejene Ayele Tesema2


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    <subfield code="u">1Mettu University, Faculty of Natural and Computational Sciences, Department of Chemistry, P.O.Box 318, Mettu Ethiopia. 2Jimma University, College of Natural Sciences, Department of Chemistry, P.O.Box 378 Jimma Ethiopia.</subfield>
    <subfield code="a">Kebena Gebeyehu Motora1*, Dejene Ayele Tesema2</subfield>
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    <subfield code="a">REMOVAL OF FLUORIDE FROM AQUEOUS SOLUTION USING FIRED CLAY SOIL PILLARED WITH TEA LEAF ASH COMPONENTS</subfield>
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    <subfield code="a">&lt;p&gt;This study reports on the adsorption of fluoride ion from aqueous solutions by using fired clay soil, pillared with tea leave ash components. The potential of low cost material fired clay soil and fired clay soil pillared with tea leave ash components for fluoride removal from aqueous solution was evaluated by using fluoride ion selective electrode. Pillaring of clay soil with tea leave ash was done by thoroughly mixing fifteen gram of tea leave ash and three hundred gram of clay soil using distilled water and it was aged for 96 hours until it was dried. Untreated clay soil and clay soil pillared with tea leave ash components were fired in an electrical furnace at 570 C for 3 hrs. Batch adsorption experiments were carried out and the effects of pH, contact time, initial adsorbate concentration, adsorbent dose and temperature of the solution were investigated. Adsorption of fluoride by fired clay soil and fired clay soil pillared with tea leave ash was observed to sharply increase from pH 4 to 7 then decreased. The maximum adsorption efficiencies obtained were 75% for fired clay soil and 90% for fired clay soil pillared with tea leave ash components at pH 7 for both adsorbents. The maximum adsorption capacity obtained was 0.913 mg/g for fired clay soil and 2.746 mg/g for fired clay soil pillared with tea leave ash components. It can be concluded that fired clay soil pillared with tea leave ash is a good and cheap adsorbent with high potential for the adsorption and removal of fluoride from fluoride contaminated water and could therefore serve as effective and efficient adsorbent for treatment of drinking waters in terms of high adsorption capacity.&lt;/p&gt;</subfield>
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