Hexavalent chromium adsorption on impregnated palm shell activated carbon with polyethyleneimine.
Removal of Cr(VI) ions from aqueous solution was investigated using modified palm shell activated carbon. Low Molecular Weight Polyethyleneimine (LMW PEI) was used for impregnation purpose. The maximum amount of LMW PEI adsorbed on activated carbon was determined to be approximately 228.2mg/g carbon. The adsorption experiments were carried out in a batch system using potassium dichromate K(2)Cr(2)O(7) as the source of Cr(VI) in the synthetic waste water and modified palm shell activated carbon as the adsorbent. The effects of pH, concentration of Cr(VI) and PEI loaded on activated carbon were studied. The adsorption data were found to fit well with the Freundlich isotherm model. This modified Palm shell activated carbon showed high adsorption capacity for chromium ions.
Department of Chemical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia.
Mojdeh
M
Owlad
Mohamed Kheireddine
MK
Aroua
Wan Mohd Ashri
WM
Wan Daud
D000327:Adsorption; D002244:Carbon / Q000737:chemistry*; D002606:Charcoal / Q000737:chemistry*; D002857:Chromium / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007854:Lead / Q000737:chemistry; D008970:Molecular Weight; D010100:Oxygen / Q000737:chemistry; D011094:Polyethyleneimine / Q000737:chemistry*; D011192:Potassium Dichromate / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000737:chemistry; D018508:Water Purification / Q000379:methods*
D014874:Water Pollutants, Chemical; D002857:Chromium; D002606:Charcoal; C074702:chromium hexavalent ion; D007854:Lead; D002244:Carbon; D011094:Polyethyleneimine; D010100:Oxygen; D011192:Potassium Dichromate