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Iranian Journal of Environmental Health, Science and Engineering
Iranian Association of Environmental Health (IAEH)
ISSN: 1735-1979
Vol. 4, No. 3, 2007, pp. 191-196
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Bioline Code: se07029
Full paper language: English
Document type: Research Article
Document available free of charge
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Iranian Journal of Environmental Health, Science and Engineering, Vol. 4, No. 3, 2007, pp. 191-196
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ADSORPTION OF CHROMIUM FROM WASTEWATER BY PLATANUS ORIENTALIS  LEAVES
Mahvi, A. H.; Nabizadeh, R.; Gholami, F. & Khairi, A.
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
Cadmium removal, Platanus orientalis leaves, ash, aqueous solution
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© Copyright 2007 - Tehran University of Medical Sciences Publications
Alternative site location: http://diglib.tums.ac.ir/pub/
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