title: Utilization of carbon derived from mustard oil cake (CMOC) for the removal of bivalent metal ions: effect of anionic surfactant on the removal and recovery.
abstract: Effect of sodium dodecyl sulfate (SDS) on the adsorption of Zn(II) and Ni(II) on CMOC was investigated. Addition of SDS favored the adsorption process. Adsorption process was found to be dependent on concentration, pH, dose, contact time and temperature. Thermodynamic studies showed that the process is endothermic and spontaneous. The spontaneity increases with increase in temperature. D-R isotherm suggests that the adsorption is chemical in nature. Kinetics studies showed better applicability of pseudo second order model. Reichenberg equation showed that pore diffusion was not only the rate determining step but some other process like film diffusion was also involved in the adsorption. These metals could be desorbed (75-80%) with 0.1M HCl as eluent.
authors.affiliation: Environmental Research Laboratory, Department of Applied Chemistry, Faculty of Engineering and Technology, Aligarh Muslim University, Aligarh 202002, UP, India. rakrao1@rediffmail.com
authors.forename: Rifaqat Ali Khan
authors.initials: RA
authors.lastname: Rao
authors.forename: Moonis Ali
authors.initials: MA
authors.lastname: Khan
authors.forename: Byong-Hun
authors.initials: BH
authors.lastname: Jeon
mesh_terms: D000327:Adsorption; D000465:Algorithms; D000838:Anions; D002244:Carbon / Q000737:chemistry*; D002413:Cations, Divalent / Q000302:isolation & purification*; D006838:Hydrocarbons; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008823:Micelles; D008855:Microscopy, Electron, Scanning; D009149:Mustard Plant / Q000737:chemistry*; D009532:Nickel / Q000302:isolation & purification; D010938:Plant Oils / Q000737:chemistry*; D011786:Quality Control; D012967:Sodium Dodecyl Sulfate; D012996:Solutions; D017550:Spectroscopy, Fourier Transform Infrared; D013501:Surface-Active Agents / Q000737:chemistry*; D014867:Water; D015032:Zinc / Q000302:isolation & purification
chemical_list: D000838:Anions; D002413:Cations, Divalent; D006838:Hydrocarbons; D008823:Micelles; D010938:Plant Oils; D012996:Solutions; D013501:Surface-Active Agents; D014867:Water; D012967:Sodium Dodecyl Sulfate; D002244:Carbon; D009532:Nickel; D015032:Zinc; C027793:mustard oil