Asian Journal of Microbiology, Biotechnology & Environmental Sciences Paper

Vol 19, Issue 3, 2017; Page No.(625-630)

REMOVAL OF ZINC FROM WASTEWATER BY USING JORDANIAN NATURAL ZEOLITE

ABDAL-KAREEM AND M.A. DAWAGREH1

Abstract

The aim of the present work was to investigate the ability of Jordanian natural zeolites, clinoptilolite, to remove zinc ions from aqueous solution. Towards this aim, batch adsorption experiments were carried out and the effect of various parameters on this removal process has been investigated. Batch adsorption experiments were conducted using different mass of adsorbents (25, 35, and 45) g with (500 mL) of solutions containing ions of (ZnII) at desired concentration (10 mg/L) at constant temperatures (25oC) in 500 mL flask. The particle size of the sample (zeolite) used was in the range (1.8-2 mm). The flask was shaken by a shaker device for (48 hr), set up the device (2500 rpm). The effects of pH, adsorption time, metal ion concentration and the sorbent concentration, contact time were examined. Where zeolites made in direct contact with the contaminant under study until equilibrium is attained. The optimum pH for adsorption was found to be 8.5. The increasing of contact time between sorbent and the metal zinc solution, the residual zinc concentration (ZnII) will be increasing. The effect of adsorbent on the value of residual (ZnII) concentration will decrease with increase the mass of adsorbent. The effect of the pH value increasing will decrease the residual zinc concentration.

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