dc.contributor.author |
Mulopo, J
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|
dc.contributor.author |
Mashego, M
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|
dc.contributor.author |
Zvimba, JN
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dc.date.accessioned |
2012-11-22T06:29:28Z |
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dc.date.available |
2012-11-22T06:29:28Z |
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dc.date.issued |
2012-06 |
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dc.identifier.citation |
Mulopo, J, Mashego, M and Zvimba, JN. 2012. Recovery of calcium carbonate from steelmaking slag and utilization for acid mine drainage pre-treatment. Water Science and Technology, vol. 65(12), pp 2236-2241 |
en_US |
dc.identifier.issn |
0273-1223 |
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dc.identifier.uri |
http://www.iwaponline.com/wst/06512/wst065122236.htm
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dc.identifier.uri |
http://hdl.handle.net/10204/6353
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dc.description |
Copyright: 2012 IWA Publishing. This is an uncorrected proof of the article. The definitive version is published in Water Science and Technology, vol. 65(12), pp 2236-2241 |
en_US |
dc.description.abstract |
The conversion of steelmaking slag (a waste product of the steelmaking process) to calcium carbonate (CaCO3) was tested using hydrochloric acid, ammonium hydroxide and carbon dioxide via a pH-swing process. Batch reactors were used to assess the technical feasibility of calcium carbonate recovery and its use for pre-treatment of Acid Mine Drainage (AMD) from coal mines. The effect of key process parameters, such as the amount of acid (HCl/Calcium molar ratio), the pH and the CO2 flow rate were considered. It was observed that calcium extraction from steelmaking slag significantly increased with increase in the amount of hydrochloric acid. The CO2 flow rate also had a positive effect of the carbonation reaction rate but did not affect the morphology of the calcium carbonate produced for values less than 2 L/min. The CaCO3 recovered from the bench scale batch reactor demonstrated effective neutralization ability during AMD pre-treatment compared to the commercial laboratory grade CaCO3. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
IWA Publishing |
en_US |
dc.relation.ispartofseries |
Workflow;8314 |
|
dc.subject |
Acid Mine Drainage |
en_US |
dc.subject |
AMD |
en_US |
dc.subject |
Calcium carbonate |
en_US |
dc.subject |
Carbonation |
en_US |
dc.subject |
Extraction |
en_US |
dc.subject |
Steelmaking slag |
en_US |
dc.title |
Recovery of calcium carbonate from steelmaking slag and utilization for acid mine drainage pre-treatment |
en_US |
dc.type |
Article |
en_US |
dc.identifier.apacitation |
Mulopo, J., Mashego, M., & Zvimba, J. (2012). Recovery of calcium carbonate from steelmaking slag and utilization for acid mine drainage pre-treatment. http://hdl.handle.net/10204/6353 |
en_ZA |
dc.identifier.chicagocitation |
Mulopo, J, M Mashego, and JN Zvimba "Recovery of calcium carbonate from steelmaking slag and utilization for acid mine drainage pre-treatment." (2012) http://hdl.handle.net/10204/6353 |
en_ZA |
dc.identifier.vancouvercitation |
Mulopo J, Mashego M, Zvimba J. Recovery of calcium carbonate from steelmaking slag and utilization for acid mine drainage pre-treatment. 2012; http://hdl.handle.net/10204/6353. |
en_ZA |
dc.identifier.ris |
TY - Article
AU - Mulopo, J
AU - Mashego, M
AU - Zvimba, JN
AB - The conversion of steelmaking slag (a waste product of the steelmaking process) to calcium carbonate (CaCO3) was tested using hydrochloric acid, ammonium hydroxide and carbon dioxide via a pH-swing process. Batch reactors were used to assess the technical feasibility of calcium carbonate recovery and its use for pre-treatment of Acid Mine Drainage (AMD) from coal mines. The effect of key process parameters, such as the amount of acid (HCl/Calcium molar ratio), the pH and the CO2 flow rate were considered. It was observed that calcium extraction from steelmaking slag significantly increased with increase in the amount of hydrochloric acid. The CO2 flow rate also had a positive effect of the carbonation reaction rate but did not affect the morphology of the calcium carbonate produced for values less than 2 L/min. The CaCO3 recovered from the bench scale batch reactor demonstrated effective neutralization ability during AMD pre-treatment compared to the commercial laboratory grade CaCO3.
DA - 2012-06
DB - ResearchSpace
DP - CSIR
KW - Acid Mine Drainage
KW - AMD
KW - Calcium carbonate
KW - Carbonation
KW - Extraction
KW - Steelmaking slag
LK - https://researchspace.csir.co.za
PY - 2012
SM - 0273-1223
T1 - Recovery of calcium carbonate from steelmaking slag and utilization for acid mine drainage pre-treatment
TI - Recovery of calcium carbonate from steelmaking slag and utilization for acid mine drainage pre-treatment
UR - http://hdl.handle.net/10204/6353
ER -
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en_ZA |