title: Facile approach to synthesize chitosan based composite--Characterization and cadmium(II) ion adsorption studies.
abstract: In this present study, the physicochemical properties, nature and morphology of prepared composite materials involving Activated Eskom fly ash (A-FA) and biopolymer-chitosan (Ch) for two components composite materials were investigated. The nature, morphology, elemental characterizations of these materials were carried out by means of modern analytical methods such as scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray fluorescence (XRF), UV-vis spectroscopy (UV-vis), and Fourier transform infrared spectroscopy (FTIR. Other physicochemical characterizations undertaken were carbon, nitrogen and hydrogen (CNH) analysis, and ash content. The precursors and composite materials were then applied to the sorption of cadmium (Cd(2+)) from aqueous water. Maximum Cd(2+) adsorption capacity (Qmax) was recorded to be 87.72 mg/g at pH 8. The adsorption kinetics of the composite materials fitted well with the pseudo second-order kinetic model while the adsorption isotherm data could be well described by the Langmuir isotherm model.
authors.affiliation: Department of Applied chemistry, University of Johannesburg, PO Box 17011, Doornfontien, Johannesburg 2028, South Africa. Electronic address: spandey.uj@gmail.com.
authors.forename: Sadanand
authors.initials: S
authors.lastname: Pandey
authors.affiliation: Department of Chemistry, NTPC Unchahar Power Plant, Unchahar, Rai Bareilly 229406, Uttar Pradesh, India. Electronic address: stuti.au@gmail.com.
authors.forename: Stuti
authors.initials: S
authors.lastname: Tiwari
mesh_terms: D000327:Adsorption; D002104:Cadmium / Q000737:chemistry* / Q000302:isolation & purification*; D048271:Chitosan / Q000737:chemistry*; D060729:Coal Ash / Q000737:chemistry; D004785:Environmental Pollutants / Q000737:chemistry* / Q000302:isolation & purification; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D016062:Porosity; D013696:Temperature
chemical_list: D060729:Coal Ash; D004785:Environmental Pollutants; D002104:Cadmium; D048271:Chitosan
keywords: Acetic acid (PubChem CID: 176); Adsorption; Biopolymer; Cadion (PubChem CID: 79359); Cadmium nitrate tetrahydrate (PubChem CID: 56924536); Cadmium removal; Chitosan; Chitosan (PubChem CID: 21896651); Composite; Ethanol (PubChem CID: 702); Fly ash; Hexane (PubChem CID: 8058); Hydrochloric acid (PubChem CID: 313); Sodium hydroxide (PubChem CID: 14798); Sulphuric acid (PubChem CID: 1118)