MODIFIED HEMATITE IRON FOR REMOVING ARSENIC(V) FROM WATER

K. QURESHI, S. ALMANI, Z. SOLANGI, Z. BHATTI, I. BHATTI

Abstract


The need for effective and cheap adsorbents will rise due to the extensive acknowledgement of the lethal health effects of arsenic exposure through drinking water. Natural iron ores was chemically modified with nitric acid for use as adsorbent. The modified ore was used for removing arsenic from water. Adsorbent dose, pH and contact time were the important parameters which were optimized using 1 mg/L of arsenic solution. Hematite a cheap indigenous iron ore was found very efficient for the adsorption of arsenic .Nearly 95 % As (V) was adsorbed using 4 g/L adsorbent dose optimum pH range 5–6.5. The column study was also conducted which showed adsorption capacity of 3.5mg/gm of arsenic adsorbed.

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