title: Bioprospecting of gum kondagogu (Cochlospermum gossypium) for bioremediation of uranium (VI) from aqueous solution and synthetic nuclear power reactor effluents.
abstract: An ecofriendly green chemistry method using a natural biopolymer, Gum Kondagogu (GK) for the removal of U (VI) from aqueous, simulated nuclear effluents was studied. The adsorption characteristic of GK towards U (VI) from aqueous solution was studied at varied pH, contact time, adsorbent dose, initial U (VI) concentration and temperature using UV-Visible spectroscopy and ICP-MS. Maximum adsorption was seen at pH 4, 0.1% GK with 60 min contact time at room temperature. The GK- U (VI) composite was characterized by FT-IR, zeta potential, TEM and SEM-EDAX. The Langmuir isotherm was found to be 487 mg of U (VI) g(-1) of GK. The adsorption capacity and (%) of U (VI) was found to be 490 ± 5.4 mg g(-1) and 98.5%. Moreover adsorption of U (VI) by GK was not influenced by other cations present in the simulated effluents. The adsorbed U (VI) was efficiently stripped from composite using 1 M HCl.
authors.affiliation: Department of Biochemistry, University College of Science, Osmania University, Hyderabad 500 007, Telangana, India. Electronic address: sashi_rao@yahoo.com.
authors.forename: R B
authors.initials: RB
authors.lastname: Sashidhar
authors.affiliation: Department of Biochemistry, University College of Science, Osmania University, Hyderabad 500 007, Telangana, India.
authors.forename: S Kalaignana
authors.initials: SK
authors.lastname: Selvi
authors.affiliation: Department of Biochemistry, University College of Science, Osmania University, Hyderabad 500 007, Telangana, India.
authors.forename: V T P
authors.initials: VT
authors.lastname: Vinod
authors.affiliation: Department of Biochemistry, University College of Science, Osmania University, Hyderabad 500 007, Telangana, India.
authors.forename: Tanuja
authors.initials: T
authors.lastname: Kosuri
authors.affiliation: Department of Biochemistry, University College of Science, Osmania University, Hyderabad 500 007, Telangana, India.
authors.forename: D
authors.initials: D
authors.lastname: Raju
authors.affiliation: Department of Biochemistry, University College of Science, Osmania University, Hyderabad 500 007, Telangana, India.
authors.forename: R
authors.initials: R
authors.lastname: Karuna
mesh_terms: D000327:Adsorption; D001673:Biodegradation, Environmental; D065132:Bioprospecting; D031212:Bixaceae / Q000737:chemistry*; D052918:Environmental Restoration and Remediation / Q000379:methods*; D014501:Uranium / Q000737:chemistry*; D014865:Waste Disposal, Fluid / Q000379:methods*; D014875:Water Pollutants, Radioactive / Q000737:chemistry*; D018508:Water Purification / Q000379:methods
chemical_list: D014875:Water Pollutants, Radioactive; D014501:Uranium
keywords: Bioremediation of U (VI); Biosorption; Desorption; Gum kondagogu metal-composite; Langmuir isotherm