Nickel adsorption by sodium polyacrylate-grafted activated carbon.
A novel sodium polyacrylate grafted activated carbon was produced by using gamma radiation to increase the number of functional groups on the surface. After irradiation the capacity for nickel adsorption was studied and found to have increased from 44.1 to 55.7 mg g(-1). X-ray absorption spectroscopy showed that the adsorbed nickel on activated carbon and irradiation-grafted activated carbon was coordinated with 6 oxygen atoms at 2.04-2.06 A. It is proposed that this grafting technique could be applied to other adsorbents to increase the efficiency of metal adsorption.
Ewecharoen
A
A
Division of Biotechnology, School of Bioresources and Technology, King Mongkut's University of Technology Thonburi, 83 Moo 8 Thakham, Bangkhuntien, Bangkok 10150, Thailand.
Thiravetyan
P
P
Wendel
E
E
Bertagnolli
H
H
D000180:Acrylic Resins / Q000737:chemistry*; D000327:Adsorption; D002244:Carbon / Q000737:chemistry*; D004595:Electroplating; D005720:Gamma Rays; D008670:Metals / Q000737:chemistry; D009532:Nickel / Q000008:administration & dosage*; D010100:Oxygen / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared; D014873:Water Pollutants; D014874:Water Pollutants, Chemical; D018508:Water Purification / Q000379:methods*; D014965:X-Rays
D000180:Acrylic Resins; D008670:Metals; D014873:Water Pollutants; D014874:Water Pollutants, Chemical; C006903:carbopol 940; D002244:Carbon; D009532:Nickel; D010100:Oxygen