ADSORPTION OF CHROMIUM FROM WASTEWATER BY PLATANUS ORIENTALIS LEAVES
Author(s):
Abstract:
The Cr (VI) adsorption characteristics of platanus orientalis leaves and their ash were examined as a function of contact time, initial pH and metal ion concentration. Batch adsorption experiments were performed. The effects of Ca2, Mg2, Na and K on adsorption were studied. The effect of this adsorbent on COD in wastewater showed that 2g/L of adsorbent caused increase of 110mg/L and 76mg/L COD in deionized water in 120 minutes for platanus orientalis leaves and their ash , respectively. The maximum removal took place in the pH range of 6-7, contact time of 60 minutes and initial concentration of 2mg/L. Studies showed that the Freundlich adsorption model better fitted with the results than Langmuir with R2 > 0.85. The study showed platanus orientalis leaves ash was more favorable than living ones as well as in removing chromium from the aqueous solution.
Keywords:
Language:
English
Published:
Iranian Journal of Environmental Health Science and Engineering, Volume:4 Issue: 3, Summer 2007
Pages:
191 to 196
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