Silver Nanowaste Reduction and Recycling by Combination of Physical and Chemical Seperation Methods

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Sabetghadam, Afzal | 2015

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 47800 (03)
University: Sharif University of Technology
Department: Chemistry
Advisor(s): Hormozi Nezhad, Mohammad Reza; Sajjadi, Ali Akbar
Abstract:
The increasing utilization of silver nanoparticles (Ag-NPs) in industrial and consumer products has raised concern to wastewater treatment utilities, due to its antimicrobial activity. In this research, recovery of silver nanoparticles from wastewater via using activated carbon and convert it into usable nanoparticles is presented. real waste of silver nanoparticles have been used and activated carbon as adsorbent has a high absorption recovery for silver. Under the optimized experimental parameters e.g. pH, temperature, time of process, and amount of activated carbon, an absorption maximum was achieved and over than 99% of silver nanoparticles can be removed from wastewater. After the removal process, metallic silver is achieved. Then silver nanoparticles were synthesized by using gallic acid as the reducing agent. This method represents a quick and easy process for the recovery of silver nanoparticles and can be used for all kinds of silver nanoparticles
Keywords:
Silver Nanoparticles ; Activated Carbon ; Chemical Separation ; Calcination ; Silver Nanoparticles Recycling

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