Chromium biosorption using the residue of alginate extraction from Sargassum filipendula
作者： Caroline Bertagnolli , Meuris Gurgel Carlos da Silva , Eric Guibal
DOI: 10.1016/J.CEJ.2013.10.024
关键词: Sargassum filipendula 、 Langmuir adsorption model 、 Biosorption 、 Brown seaweed 、 Nuclear chemistry 、 Aqueous solution 、 Residue (chemistry) 、 Chromatography 、 Chromium 、 Chemistry
摘要: Abstract The Brazilian brown seaweed Sargassum filipendula was treated for alginate extraction and the residue used removing Cr(VI) Cr(III) from aqueous solutions. characterized in terms of yields. Alginate contents were 17% 39%, respectively. Kinetic experiments carried out different models applied order to elucidate rate-controlling mechanism: pseudo-first order, pseudo-second intra-particle diffusion. biosorption is followed by reduction hexavalent trivalent chromium. application Langmuir model equilibrium data showed a superior maximum capacity (qmax) total chromium (0.819 mmol g−1) comparison (0.635 mmol g−1). capacities obtained close values found removal species seaweeds.
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