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Clay-biochar composites for sorptive removal of tetracycline antibiotic in aqueous media

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dc.contributor.author Premarathna, K.S.D
dc.contributor.author Rajapaksha, A.U
dc.contributor.author Adassoriya, N
dc.contributor.author Vithanage, M
dc.date.accessioned 2020-08-27T09:46:50Z
dc.date.available 2020-08-27T09:46:50Z
dc.date.issued 2019
dc.identifier.citation Premarathna, K.S.D, et al.(2019)."Clay-biochar composites for sorptive removal of tetracycline antibiotic in aqueous media", Journal of Environmental Management 238 (2019) 315–322 en_US
dc.identifier.uri http://dr.lib.sjp.ac.lk/handle/123456789/9078
dc.description.abstract The focus of this research was to synthesize novel clay-biochar composites by incorporating montmorillonite (MMT) and red earth (RE) clay materials in a municipal solid waste (MSW) biochar for the adsorptive removal of tetracycline (TC) from aqueous media. X-ray Fluorescence Analysis (XRF), Fourier Transform Infrared Spectroscopy (FTIR), Powder X-ray Diffraction (PXRD) and Scanning Electron Microscopy (SEM) were used for the characterization of the synthesized raw biochar (MSW-BC) and clay-biochar composites (MSW-MMT and MSW-RE). Results showed that minute clay particles were dispersed on biochar surfaces. The FTIR bands due to Si-O functional group vibrations in the spectra of the clay-biochar composites provided further evidence for successful composite formation. The kinetic TC adsorption data of MSW-MMT were well fitted to the Elovich model expressing high surface activity of biochar and involvement of multiple mechanisms in the adsorption. The kinetic TC adsorption data of MSW-BC and MSW-RE were fitted to the pseudo second order model indicating dominant contribution of chemisorption mechanism during the adsorption. The adsorption differentiation obtained in the kinetic studies was mainly due to the structure of the combined clay material. The adsorption isotherm data of all the adsorbents were well fitted to the Freundlich model suggesting that the adsorption of TC onto the materials occurred via both physisorption and chemisorption mechanisms. In comparison to the raw biochar and MSW-RE, MSW-MMT exhibited higher TC adsorption capacity. Therefore, MSW-MMT clay-biochar composite could be applied in the remediation of TC antibiotic residues in contaminated aqueous media. en_US
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.subject Montmorillonite Natural red earth Antibiotics Intercalation Composite Water treatment en_US
dc.title Clay-biochar composites for sorptive removal of tetracycline antibiotic in aqueous media en_US
dc.type Article en_US
dc.identifier.doi 10.1016/j.jenvman.2019.02.069 en_US


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