Research Article Open Access

EFFECT OF NATURAL ZEOLITE MATERIAL ON HEXAVALENT CHROMIUM ADSORPTION

Abstract

Huge amounts of chromium (Cr) compounds are being releasing into the environment as a result of anthropogenic activities. Speciation of chromium compounds is important in understanding the toxicity because of contrasting characters of hexavalent (Cr (VI) and trivalent Cr (III) chromium). An improved method for the removal of chromium is carried by natural materials. Certain natural Zeolite, especially the Clinoptilolite variety, has been demonstrated to be effective in removing heavy metals from water. The principles involved in removal of several toxic metals are Ion exchange, removing the metal and releasing another non toxic ion such as potassium or sodium, from the crystal. Zeolites, like many other synthetic ion exchangers (silica gel, wheat bran, tamarind seed, etc.) are adsorbed the metals from wastewater. Hexavalent chromium was adsorbed by Zeolite upto 92% from the solution. The results showed that, the Zeolite material was found to adsorb hexavalent chromium very effectively and can be recommended for water and wastewater treatment.

SUNITHA RANGASAMY, BHARANI ALAGIRISAMY AND MAHIMAIRAJA SANTIAGO

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