پديد آورندگان :
Mahvi A. H. نويسنده , Nabizadeh R. نويسنده , Gholami F. نويسنده , Khairi A. نويسنده
چكيده لاتين :
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.
