Abstract
In recent times, aerogels have been synthesized from organic elements like alginate, chitosan and polysaccharides based cellulosic materials for the sorption of oil and water rendering many advantages like environmental friendliness, low cost, hydrophobic alteration through hydroxyl groups over the substrate surface and renewability. When sodium alginate (SA) is incorporated into aerogels, it can serve as a potential candidate material for water treatment. SA are renewable and surplus availability polymeric natural material that is completely biodegradable and biocompatible. SA is derived from brown sea algae that consists of a polysaccharide structure and could be readily used as reinforcement material for obtaining high aspect ratio and better mechanical properties. Since SA is characterized with more hydroxyl and carboxyl groups, nontoxicity, biodegradability and biocompatibility, and can be used in the removal of heavy metal ions and dyes from the wastewater. Current chapter deals with various aerogels formed with SA as a main constituent, their preparation, properties and characteristics that makes them suitable for the wastewater treatment.
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