Synthesis of metal ion entrapped silica gel/chitosan biocomposite for defluoridation studies.

This article focused on the development of silica gel/chitosan (SGCS) composite for fluoride removal. To enhance the fluoride selectivity of biocomposite, lanthanum-III (La) was incorporated into SGCS composite namely LaSGCS composite. A comparative evaluation of defluoridation capacity (DC) of LaSGCS composite, SGCS composite, silica gel (SG) and chitosan (CS) was made in batch mode.