Study of the involved sorption mechanisms of Cr(VI) and Cr(III) species onto dried Salvinia auriculata biomass

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• 作者：Aparecido Nivaldo Mó ; denes^a ; ^{anmodenes@yahoo.com.br} ; Ana Paula de Oliveira^b ; Fernando R. Espinoza-Quiñ ; ones^a ; Daniela Estelita Goes Trigueros^a ; Alexander Dimitrov Kroumov^c ; Rosâ ; ngela Bergamasco^b
• 关键词：Cr(VI) species uptake ; Biosorbent characterisation ; Intra-particle diffusion approach ; Physical-sorption mechanisms
• 刊名：Chemosphere
• 出版年：2017
• 出版时间：April 2017
• 年：2017
• 卷：172
• 期：Complete
• 页码：373-383
• 全文大小：3016 K
• 卷排序：172

文摘

Biosorbent bulk modification by the presence of Cr(VI) species was verified. Kinetic data revealed more sorption sites at micro-porous levels by Cr(VI) action. Cr(VI) species removal was mainly mediated by a redox process. Functional groups that interacting in the Cr(VI) reduction were identified. A new insight about the mechanism of Cr(VI) removal by a biosorbent was proposed.