Composite biosorbent for treatment of waste aqueous system(s) containing heavy metals
AssigneesThe United States of America as represented by the Secretary of the Army, University of Illinois at Urbana-Champaign
InventorsVeera M. Boddu, Edgar Dean Smith
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Abstract
A biosorbent composition, process of preparing and use thereof wherein the biosorbent composition comprises a chitosan-coated substrate. Useful substrates include support materials such as a ceramic support material. The biosorbent composition of the instant invention is useful in treating aqueous systems, including wastewater and aqueous waste streams, by removing undesired heavy metals.
Claims15
A process for preparing a supported chitosan biosorbent useful for the treatment of wastewater which comprises preparing a ceramic support material, preparing a chitosan gel, and coating said chitosan gel to said ceramic support material, wherein said ceramic support material comprises acid treated alumina prepared by drying ceramic alumina, mixing the dry ceramic alumina with an acid to form a mixture, filtering and washing the mixture to prepare a washed mixture, and drying the washed mixture.
A process for preparing a biosorbent useful for the treatment of wastewater which comprises preparing a ceramic support material, preparing a gel, and coating said gel to said ceramic support material, wherein said gel comprises chitosan, its equivalents and the like, wherein said ceramic support material comprises acid treated alumina prepared by drying ceramic alumina, mixing the dry ceramic alumina with an acid to form a mixture, filtering and washing the mixture to prepare a washed mixture, and drying the washed mixture.
A process for preparing a supported chitosan biosorbent useful for the treatment of wastewater which comprises preparing a ceramic support material, preparing a chitosan gel, and coating said chitosan gel to said ceramic support material, wherein said ceramic support material is prepared by mixing the ceramic support material with an acid, filtering and washing the ceramic support material, and drying the ceramic support material.
Dependencies are inferred from the claim text.