Production Of Gold And Silver Nanoparticles Recovered Through Sonication Of Reflective Metal Layer In Cd-R Waste

Reflective metal layer (gold and silver) in CD-R waste were separated by physical and chemical separation methods. Both types of reflective metal layer (gold and silver) were then sonicated in the ultrasonic units, Sonoswiss SW 12 H. The effect of three operating parameters during the sonication pro...

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Main Author:	Ahmad, Azliyana
Format:	Thesis
Language:	English
Published:	2013
Subjects:	TN1-997 Mining engineering Metallurgy
Online Access:	http://eprints.usm.my/45740/1/AZLIYANA24.pdf
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spelling	my-usm-ep.457402019-10-29T09:31:08Z Production Of Gold And Silver Nanoparticles Recovered Through Sonication Of Reflective Metal Layer In Cd-R Waste 2013 Ahmad, Azliyana TN1-997 Mining engineering. Metallurgy Reflective metal layer (gold and silver) in CD-R waste were separated by physical and chemical separation methods. Both types of reflective metal layer (gold and silver) were then sonicated in the ultrasonic units, Sonoswiss SW 12 H. The effect of three operating parameters during the sonication process were investigated, namely sonication features (degas, sweep and boost), sonication time and operating temperature. The product was then characterized by particle size analysis, Field Emission Scanning Electron Microscopy and Energy Dipersive Spectroscopy and Energy Filter Transmission Electron Microscopy and Electron Energy Loss Spectroscopy. It has been confirmed through the present study that the recycling process of CD-R waste can be carried out using simple methods such as physical and chemical separation using 0.5 M of acetone for gold and 0.5 M of HCL for silver. Production of fine gold nanoparticles was successfully done using sweep feature at high operating temperature range (55-65°C) at 10 min resulting in the minimum d50 at 1.01 nm and span value at 0.048. Similarly, production of fine silver nanoparticles was successfully done using boost feature at high operating temperature range (55-65°C) at 30 min resulting in the minimum d50 at 1.33 nm and span value at 0.281. 2013 Thesis http://eprints.usm.my/45740/ http://eprints.usm.my/45740/1/AZLIYANA24.pdf application/pdf en public masters Universiti Sains Malaysia Pusat Pengajian Kejuruteraan Bahan dan Sumber Mineral
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	TN1-997 Mining engineering Metallurgy
spellingShingle	TN1-997 Mining engineering Metallurgy Ahmad, Azliyana Production Of Gold And Silver Nanoparticles Recovered Through Sonication Of Reflective Metal Layer In Cd-R Waste
description	Reflective metal layer (gold and silver) in CD-R waste were separated by physical and chemical separation methods. Both types of reflective metal layer (gold and silver) were then sonicated in the ultrasonic units, Sonoswiss SW 12 H. The effect of three operating parameters during the sonication process were investigated, namely sonication features (degas, sweep and boost), sonication time and operating temperature. The product was then characterized by particle size analysis, Field Emission Scanning Electron Microscopy and Energy Dipersive Spectroscopy and Energy Filter Transmission Electron Microscopy and Electron Energy Loss Spectroscopy. It has been confirmed through the present study that the recycling process of CD-R waste can be carried out using simple methods such as physical and chemical separation using 0.5 M of acetone for gold and 0.5 M of HCL for silver. Production of fine gold nanoparticles was successfully done using sweep feature at high operating temperature range (55-65°C) at 10 min resulting in the minimum d50 at 1.01 nm and span value at 0.048. Similarly, production of fine silver nanoparticles was successfully done using boost feature at high operating temperature range (55-65°C) at 30 min resulting in the minimum d50 at 1.33 nm and span value at 0.281.
format	Thesis
qualification_level	Master's degree
author	Ahmad, Azliyana
author_facet	Ahmad, Azliyana
author_sort	Ahmad, Azliyana
title	Production Of Gold And Silver Nanoparticles Recovered Through Sonication Of Reflective Metal Layer In Cd-R Waste
title_short	Production Of Gold And Silver Nanoparticles Recovered Through Sonication Of Reflective Metal Layer In Cd-R Waste
title_full	Production Of Gold And Silver Nanoparticles Recovered Through Sonication Of Reflective Metal Layer In Cd-R Waste
title_fullStr	Production Of Gold And Silver Nanoparticles Recovered Through Sonication Of Reflective Metal Layer In Cd-R Waste
title_full_unstemmed	Production Of Gold And Silver Nanoparticles Recovered Through Sonication Of Reflective Metal Layer In Cd-R Waste
title_sort	production of gold and silver nanoparticles recovered through sonication of reflective metal layer in cd-r waste
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Kejuruteraan Bahan dan Sumber Mineral
publishDate	2013
url	http://eprints.usm.my/45740/1/AZLIYANA24.pdf
_version_	1747821555567558656

Production Of Gold And Silver Nanoparticles Recovered Through Sonication Of Reflective Metal Layer In Cd-R Waste

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