Bionanocomposites based on the assembly of biopolymers and clay minerals constitute cheap and non-hazardous components for the preparation of low cost biosorbents for the removal of pollutants from water. In general, layered silicates of the smectite family are the most commonly used inorganic counterpart. However, other layered silicates, such as vermiculite, and fibrous clays, sepiolite and palygorskite, result very interesting alternative in the preparation of such bionanocomposites. This presentation will give an overview on the contribution of our research group at the ICMM-CSIC in the development of diverse biopolymer-clay nanocomposites and their application in the removal of a wide variety of water pollutants including dyes, pesticides, and heavy metal ions. These bionanocomposites can be based on widespread polysaccharides like chitosan or starch, but also in other less known type of biopolymers. Moreover, they can be used directly as powders of after being processed as films, foams or beads, which facilitates their removal from the aqueous medium. References: - A.C.S. Alcântara, M. Darder, P. Aranda, E. Ruiz-Hitzky, Appl. Clay Sci. 96, 2–8 (2014) - Y. Koriche, M. Darder, P. Aranda, S. Semsari, E. Ruiz-Hitzky, Sci. Adv. Mater., 2013, 5, 994-1005.; ibidem, Dalton Trans. 43, 10512–10520 (2014) - N. Jovi-Jovici, P. Aranda, M. Darder, E. Ruiz-Hitzky, P. Bankovi, M. Zuni, A. Milutinovi-Nikoli, in Proceeding of 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Vol. 3, pp. 991–994 (2014) - A. C. S. Alcântara, M. Darder, P. Aranda, S. Tateyama, M. K. Okajima, T. Kaneko, M. Ogawa, E. Ruiz-Hitzky, J. Mater. Chem. A, 2, 1391–1399 (2014) - E. Ruiz-Hitzky, M. Darder, B. Wicklein, A.C.S. Alcântara, P. Aranda, Adv. Polym. Sci. 267, 39–86 (2015) Acknowledgements: Authors thank the CICYT (Spain, project MAT2012-31759) and EU (COST Action MP1202) for financial support.

Clay-biopolymer nanocomposites for environmental remediation

251st National Meeting (2016)

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