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2011-Sustainable Industrial Processing Summit
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| Editors: | Florian K |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2012 |
| Pages: | 754 pages |
| ISBN: | 978-0-9879917-3-7 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
A Study On Production Of Active Zinc Oxide By A Hydrometallurgical Process
cem colakoglu1; Onuralp Yücel1;1ISTANBUL TECHNICAL UNIVERSITY, Istanbul, Turkey;
Type of Paper: Regular
Id Paper: 469
Topic: 12
Abstract:
In this study, active zinc oxide containing over 98 wt. % ZnO was synthesized by hydrometallurgical process starting from waste zinc powder (blue zinc oxide). In the first step of the study, 95 wt. % Zn containing waste zinc powder was reacted with diluted sulphuric acid solution and then Fe content was removed from the system by addition of hydrogen peroxide. In the second step, zinc sulphate solution was mixed with different stoichiometric sodium carbonate solution. After solid / liquid separation, obtained zinc carbonate was dried over 12 hours. In the last step, calcination of zinc carbonate was carried out at different temperatures and time to set the alternative quality of active zinc oxide. Elemental analysis of the waste zinc powder and active zinc oxide was performed by using XRD, XRF, BET and AAS.