Pd(II) and Pt(IV) sorption using alginate and algal-based beads

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• 作者：Shengye Wang^a ; Thierry Vincent^a ; Jean-Claude Roux^a ; Catherine Faur^b ; Eric Guibal^a ; ^{eric.guibal@mines-ales.fr}
• 关键词：Platinum group metals ; Alginate ; Algal beads ; PEI/algal composite beads ; Sorption isotherms ; Uptake kinetics
• 刊名：Chemical Engineering Journal
• 出版年：2017
• 出版时间：1 April 2017
• 年：2017
• 卷：313
• 期：Complete
• 页码：567-579
• 全文大小：1024 K
• 卷排序：313

文摘

Alginate and pure algal-beads are prepared by homogeneous ionotropic gelation. PEI incorporation in algal beads improves Pd(II) and Pt(IV) sorption at pH 2.5. Uptake kinetics are controlled by the resistance to intraparticle diffusion. Alginate and algal-beads are more selective sorbents for Pd(II) against Pt(IV). Metal speciation has a critical impact on sorption mechanism and performance.