METHODS OF PREPARING MODIFIED BIOPOLYMER-SILICA NANOCOMPOSITE MATERIALS FOR ARSENIC REMOVAL FROM CONTAMINATED WATER AND COMPOSITIONS THEREFROM

摘要

This invention discloses methods of preparing iron-modified nanosilica powder and beads from rice hull. The resulting composition is used as heavy metal adsorbents in the removal of arsenic from contaminated water. These materials allow the remediation of arsenic contaminated groundwater using low-cost, locally available, and sustainable nanomaterials.