title: Adsorptive removal of nickel and lead ions from aqueous solutions using phosphorylated tamarind nut carbon.
abstract: The adsorption of Ni(II) and Pb(II) from aqueous solutions by Phosphorylated Tamarind Nut Carbon (PTNC) was investigated. The effects of contact time, pH and carbon dose were studied in batch experiments at 30 degrees C. The equilibrium process was determined by Freundlich and Langmuir isotherm models. The kinetic studies showed good correlation for a pseudo-second-order kinetic model. Column studies were conducted in 2.5cm diameter columns. The applicability of PTNC for wastewaters containing Ni(II) and Pb(II) was evaluated. The mechanism of adsorption of metals on PTNC was found to follow ion exchange process predominantly and was supported by FTIR. The metal removal was also confirmed by SEM studies.
authors.affiliation: Department of Chemistry, SSM College of Engineering, Komarapalayam-638 183, India. suganthi_saravanan@yahoo.co.in
authors.forename: N
authors.initials: N
authors.lastname: Suganthi
authors.forename: K
authors.initials: K
authors.lastname: Srinivasan
mesh_terms: D000327:Adsorption; D002244:Carbon / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007477:Ions; D007700:Kinetics; D007854:Lead / Q000032:analysis* / Q000737:chemistry*; D009532:Nickel / Q000032:analysis* / Q000737:chemistry*; D010766:Phosphorylation; D029861:Tamarindus / Q000737:chemistry*; D013696:Temperature; D013997:Time Factors; D014874:Water Pollutants, Chemical / Q000032:analysis*; D018508:Water Purification / Q000379:methods*
chemical_list: D007477:Ions; D014874:Water Pollutants, Chemical; D007854:Lead; D002244:Carbon; D009532:Nickel