Title of article :
ADSORPTION OF CHROMIUM FROM WASTEWATER BY PLATANUS ORIENTALIS LEAVES
Author/Authors :
Mahvi, A. H. tehran university of medical sciences tums - School of Public Health and Center for Environmental Researche - Department of Environmental Health Engineering, تهران, ايران , Nabizadeh, R. tehran university of medical sciences tums - School of Public Health and Institute of Public Health Researches - Department of Environmental Health Engineering, تهران, ايران , Gholami, F. tehran university of medical sciences tums - School of Public Health and Institute of Public Health Researches - Department of Environmental Health Engineering, تهران, ايران , Khairi, A. tehran university of medical sciences tums - School of Public Health and Institute of Public Health Researches - Department of Environmental Health Engineering, تهران, ايران
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
Journal title :
Iranian Journal of Environmental Health Science and Engineering (IJEHSE)
Journal title :
Iranian Journal of Environmental Health Science and Engineering (IJEHSE)
