Zeolites are aluminosilicate minerals characterized by a regular crystalline structure with microporous cavities that confer a high superficial area. The physico-chemical properties of zeolites depend strongly on the composition of their framework, in particular, the hydrophilic/hydrophobic behaviour is affected by the SiO2/Al2O3 ratio (SAR). The ability of zeolites to adsorb amino acids is of particular relevance in industrial biotechnology due to the fact that these adsorbent materials could be used as solid solvents to stabilize the different charged forms of the amino acids. Moreover, these materials can also be employed in enrichment and separation of amino acids from complex mixtures. In this work we evaluated the adsorption behaviour of zeolite L and ZSM-5 towards the amino acid L-lysine.
Adsorption of L-lysine on L and ZSM-5 zeolites
Tatiana Chenet;Mirco Cescon;Luisa Pasti;Annalisa Martucci;Alberto Cavazzini
2018
Abstract
Zeolites are aluminosilicate minerals characterized by a regular crystalline structure with microporous cavities that confer a high superficial area. The physico-chemical properties of zeolites depend strongly on the composition of their framework, in particular, the hydrophilic/hydrophobic behaviour is affected by the SiO2/Al2O3 ratio (SAR). The ability of zeolites to adsorb amino acids is of particular relevance in industrial biotechnology due to the fact that these adsorbent materials could be used as solid solvents to stabilize the different charged forms of the amino acids. Moreover, these materials can also be employed in enrichment and separation of amino acids from complex mixtures. In this work we evaluated the adsorption behaviour of zeolite L and ZSM-5 towards the amino acid L-lysine.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
