Journal
CHEMICAL ENGINEERING JOURNAL
Volume 193, Issue -, Pages 256-266Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2012.04.037
Keywords
Algae; Pelvetia canaliculata; Biosorption; Nickel; Ion-exchange
Categories
Funding
- FEDER through COMPETE - Programa Operacional Factores de Competitividade
- FCT - Fundacao para a Ciencia e a Tecnologia
- Portuguese Foundation for Science and Technology (FCT) [DFRH-SFRH/BPD/62889/2009]
- [PEst-C/EQB/LA0020/2011]
Ask authors/readers for more resources
In the present work, various forms of algae Pelvetia canaliculata were prepared by different chemical modifications, in order to get the best form of algae for the maximum uptake of nickel. Potentiometric titration revealed that the carboxyl groups were more abundant (3.9 mmol/g) as compared to hydroxyl groups (2.0 mmol/g) on the biosorbent surface. Fourier transform infrared (FUR) analysis of algae was done to identify the role of different functional groups present on algae surface during nickel biosorption. The protonated algae showed least sorption of nickel suggesting that after acid treatment, some of the binding sites were destroyed. Among the various forms of prepared algae. Na-algae prepared directly from raw algae (without protonation) showed highest uptake of nickel. The release of sodium ions during the uptake of nickel ions has shown that the current biosorption mechanism involves ion-exchange being a stoichiometrical ratio of 2:1 between sodium and nickel ions. (C) 2012 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available