Masindi, VhahangweleGitari, WMTutu, HDe Beer, MorrisNekhwevha, N2015-01-142015-01-142014-08Masindi, 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 2014978-7-5646-2437-8https://www.imwa.info/docs/imwa_2014/IMWA2014_Masindi_640.pdfhttp://hdl.handle.net/10204/7838Annual 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 attachedThis 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.enAcid mine drainageDrainage, magnesite,Metal speciesNeutralizationPHREEQC geochemical modelingAcid Mine DrainageConference PresentationMasindi, 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/10204/7838Masindi, 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/10204/7838Masindi 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 .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 -