Inorganic pollutants such as heavy metals find their way to the aquatic environment as a result of manmade activities. As a result of inadequate treatments such pollutants could be accumulated, which is in turn one of the well-known reasons for hazardous effects as they easily interact with the biological chain. New trends in controlling heavy metals are needed especially those of green origin.Among green methods for treatment of inorganic pollutants, phytoremediation is recommended owing to its green origin. Simply, it could be defined as using the plant in such a limited way as it could return the metals back to the environment.Natural polymerswith dried water hyacinth are prepared in the form of microspheres for the remediationofheavy metals from wastewater. A patenthas beengranted in which microspheresare prepared from chitosan/water hyacinth. As chitosan is expensive, it was further replaced by sodium alginate, and thensolar drying system in addition to solar power is replacing electricity to minimize cost and save energy. The produced microsphereshave then becomecost effective and could remove inorganic pollutantsfrom wastewater without returningit back to the environment. The present talk will summarize the spectroscopic and modeling approaches in our group to prepare water hyacinth/natural polymers microspheres for the remediation of heavy metals.
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