dc.contributor.author |
Masindi, Vhahangwele
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dc.contributor.author |
Gitari, WM
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|
dc.contributor.author |
Tutu, H
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dc.contributor.author |
De Beer, Morris
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dc.contributor.author |
Nekhwevha, N
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dc.date.accessioned |
2015-01-14T05:57:50Z |
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dc.date.available |
2015-01-14T05:57:50Z |
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dc.date.issued |
2014-08 |
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dc.identifier.citation |
Masindi, V., Gitari, W.M., Tutu, H., De Beer, .M and Nekhwevha, N. 2014. Neutralization and attenuation of metal species in acid mine drainage and mine leachates using magnesite: a batch experimental approach. In: Annual International Mine Water Association Conference – An Interdisciplinary Response to Mine Water Challenges, China University of Mining and Technology, China, China, 18-22 August 2014 |
en_US |
dc.identifier.isbn |
978-7-5646-2437-8 |
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dc.identifier.uri |
https://www.imwa.info/docs/imwa_2014/IMWA2014_Masindi_640.pdf
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|
dc.identifier.uri |
http://hdl.handle.net/10204/7838
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|
dc.description |
Annual International Mine Water Association Conference – An Interdisciplinary Response to Mine Water Challenges, China University of Mining and Technogy, China, China, 18-22 August 2014. Abstract attached |
en_US |
dc.description.abstract |
This paper evaluates the potential application of amorphous magnesite for remediation of Acid Mine Drainage (AMD). Magnesite was mixed with simulated AMD at specific S/L ratios and agitated in an orbital shaker and its capacity to remove metals and neutralize the acidity assessed over time. XRF analysis showed that magnesite contains MgO (88.54 %) as the major element. XRD revealed that magnesite is amorphous and contains periclase as major mineral phase. Results indicate that contact of AMD with magnesite leads to an increase in pH (pH=10), and a reduction in EC, TDS and metal concentration to below DWAF guidelines. PHREEQC geochemical modeling predicted precipitation of Al, Fe, Mn, Mg bearing mineral phases could be responsible for attenuation of most metal species. However a high proportion of alkali and alkaline earth metals remained in the treated water which might require post treatment polishing. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
China University of Mining and Technology Press |
en_US |
dc.relation.ispartofseries |
Workflow;13902 |
|
dc.subject |
Acid mine drainage |
en_US |
dc.subject |
Drainage, magnesite, |
en_US |
dc.subject |
Metal species |
en_US |
dc.subject |
Neutralization |
en_US |
dc.subject |
PHREEQC geochemical modeling |
en_US |
dc.subject |
Acid Mine Drainage |
en_US |
dc.title |
Neutralization and attenuation of metal species in acid mine drainage and mine leachates using magnesite: a batch experimental approach |
en_US |
dc.type |
Conference Presentation |
en_US |
dc.identifier.apacitation |
Masindi, V., Gitari, W., Tutu, H., De Beer, M., & Nekhwevha, N. (2014). Neutralization and attenuation of metal species in acid mine drainage and mine leachates using magnesite: a batch experimental approach. China University of Mining and Technology Press. http://hdl.handle.net/10204/7838 |
en_ZA |
dc.identifier.chicagocitation |
Masindi, Vhahangwele, WM Gitari, H Tutu, Morris De Beer, and N Nekhwevha. "Neutralization and attenuation of metal species in acid mine drainage and mine leachates using magnesite: a batch experimental approach." (2014): http://hdl.handle.net/10204/7838 |
en_ZA |
dc.identifier.vancouvercitation |
Masindi V, Gitari W, Tutu H, De Beer M, Nekhwevha N, Neutralization and attenuation of metal species in acid mine drainage and mine leachates using magnesite: a batch experimental approach; China University of Mining and Technology Press; 2014. http://hdl.handle.net/10204/7838 . |
en_ZA |
dc.identifier.ris |
TY - Conference Presentation
AU - Masindi, Vhahangwele
AU - Gitari, WM
AU - Tutu, H
AU - De Beer, Morris
AU - Nekhwevha, N
AB - This paper evaluates the potential application of amorphous magnesite for remediation of Acid Mine Drainage (AMD). Magnesite was mixed with simulated AMD at specific S/L ratios and agitated in an orbital shaker and its capacity to remove metals and neutralize the acidity assessed over time. XRF analysis showed that magnesite contains MgO (88.54 %) as the major element. XRD revealed that magnesite is amorphous and contains periclase as major mineral phase. Results indicate that contact of AMD with magnesite leads to an increase in pH (pH=10), and a reduction in EC, TDS and metal concentration to below DWAF guidelines. PHREEQC geochemical modeling predicted precipitation of Al, Fe, Mn, Mg bearing mineral phases could be responsible for attenuation of most metal species. However a high proportion of alkali and alkaline earth metals remained in the treated water which might require post treatment polishing.
DA - 2014-08
DB - ResearchSpace
DP - CSIR
KW - Acid mine drainage
KW - Drainage, magnesite,
KW - Metal species
KW - Neutralization
KW - PHREEQC geochemical modeling
KW - Acid Mine Drainage
LK - https://researchspace.csir.co.za
PY - 2014
SM - 978-7-5646-2437-8
T1 - Neutralization and attenuation of metal species in acid mine drainage and mine leachates using magnesite: a batch experimental approach
TI - Neutralization and attenuation of metal species in acid mine drainage and mine leachates using magnesite: a batch experimental approach
UR - http://hdl.handle.net/10204/7838
ER -
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en_ZA |