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Materials 2017, 10(10), 1132;

Synthesis and Charaterization of Silica-Based Aldehyde Chitosan Hybrid Material for Biodiesel Purification

Instituto de Química e Biotecnologia, Universidade Federal de Alagoas (UFAL), Av. Lourival Melo Mota, s/n, Tabuleiro do Martins, Maceió-AL 57072-970, Brazil
Author to whom correspondence should be addressed.
Received: 12 August 2017 / Revised: 14 September 2017 / Accepted: 22 September 2017 / Published: 25 September 2017
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This study concerns the development and charaterization of Silica-based aldehyde Chitosan hybrid material as an adsorbent for biodiesel purification. This biocomposite was prepared by sol-gel route and oxidation with periodate, and then characterized. FTIR experiments showed that the hybrid formed presents absorption bands similar to those of Chitosan-Silica, with the exception of the vibrations at 1480 cm−1 and 1570 cm−1 attributed to the symmetrical angular deformation in the N-H plane, and possess large N2 Brunauer–Emmett–Teller (BET) surface areas. Thermogravimetric analysis (TG) and scanning electron microscopy (SEM) was also carried out. Adsorption studies of bioadsorbents involving the analysis of free glycerol, soap, acidity, diglycerides, triglycerides, and fluorescence spectroscopy showed that silica-based aldehyde chitosan has a good affinity for glycerol and a good purification process. View Full-Text
Keywords: modified chitosan; adsorbent; biodiesel modified chitosan; adsorbent; biodiesel

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da Silva, S.R.; de Albuquerque, N.J.A.; de Almeida, R.M.; de Abreu, F.C. Synthesis and Charaterization of Silica-Based Aldehyde Chitosan Hybrid Material for Biodiesel Purification. Materials 2017, 10, 1132.

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