Paper Information

Journal:   IRANIAN JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE AND ENGINEERING (IJEHSE)   SUMMER 2007 , Volume 4 , Number 3; Page(s) 191 To 196.
 
Paper: 

ADSORPTION OF CHROMIUM FROM WASTEWATER BY PLATANUS ORIENTALIS LEAVES

 
 
Author(s):  MAHVI A.H.*, NABIZADEH NOUDEHI R., GHOLAMI F., KHAIRI A.
 
* DEPARTMENT OF ENVIRONMENTAL HEALTH ENGINEERING, SCHOOL OF PUBLIC HEALTH AND CENTER FOR ENVIRONMENTAL RESEARCH, MEDICAL SCIENCES/UNIVERSITY OF TEHRAN, TEHRAN, IRAN
 
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.

 
Keyword(s): CADMIUM REMOVAL, PLATANUS ORIENTALIS LEAVES, ASH, AQUEOUS SOLUTION
 
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