Zvimba, JNSiyakatshana, NjabuloMathye, Matlhodi2017-06-072017-06-072015-12Zvimba, J.N., Siyakatshana, N. and Mathye, M. 2015. Passive neutralization of acid mine drainage using basic oxygen furnace slag as neutralization material: experimental and modelling. Water Science and Technology, 75 (5) 1014-1024. DOI: 10.2166/wst.2016.5790273-1223http://wst.iwaponline.com/content/early/2016/12/15/wst.2016.579DOI: 10.2166/wst.2016.579http://hdl.handle.net/10204/9113© IWA Publishing 2016. Due to copyright restrictions, the attached pdf contains the pre-print version of the article only. The definitive published version can be obtained via the publisher's website.This study investigated passive neutralization of acid mine drainage using basic oxygen furnace slag as neutralization material over 90 days, with monitoring of parameters quality and assessment of their removal kinetics. The quality was observed to significantly improve overtime with most parameters removed from the influent during the first 10 days. In this regard, removal of acidity, Fe(II), Mn, Co, Ni and Zn was characterized by fast kinetics while removal kinetics for Mg and SO42- were observed to proceed slowly. The fast removal kinetics of acidity was attributed to fast release of alkalinity from slag minerals under mildly acidic conditions of the influent water. The removal of acidity through generation of alkalinity from passive treatment system was also observed to generally govern the removal of metallic parameters through hydroxide formation, with overall percentage removals ranging 88–100% achieved. The removal kinetics for SO42- was modelled using two approaches yielding rate constant values of 1.56 and 1.53 L/day mol respectively, thereby confirming authenticity of SO42- removal kinetics experimental data. The study findings provide insights into better understanding of the potential use of slags and their limitations, particularly in mine closure, as part of addressing this challenge in South Africa.enAcid mine drainageOxygen furnace slagNeutralization materialSlagKineticsArticleZvimba, J., Siyakatshana, N., & Mathye, M. (2015). Passive neutralization of acid mine drainage using basic oxygen furnace slag as neutralization material: experimental and modelling. http://hdl.handle.net/10204/9113Zvimba, JN, Njabulo Siyakatshana, and Matlhodi Mathye "Passive neutralization of acid mine drainage using basic oxygen furnace slag as neutralization material: experimental and modelling." (2015) http://hdl.handle.net/10204/9113Zvimba J, Siyakatshana N, Mathye M. Passive neutralization of acid mine drainage using basic oxygen furnace slag as neutralization material: experimental and modelling. 2015; http://hdl.handle.net/10204/9113.TY - Article AU - Zvimba, JN AU - Siyakatshana, Njabulo AU - Mathye, Matlhodi AB - This study investigated passive neutralization of acid mine drainage using basic oxygen furnace slag as neutralization material over 90 days, with monitoring of parameters quality and assessment of their removal kinetics. The quality was observed to significantly improve overtime with most parameters removed from the influent during the first 10 days. In this regard, removal of acidity, Fe(II), Mn, Co, Ni and Zn was characterized by fast kinetics while removal kinetics for Mg and SO42- were observed to proceed slowly. The fast removal kinetics of acidity was attributed to fast release of alkalinity from slag minerals under mildly acidic conditions of the influent water. The removal of acidity through generation of alkalinity from passive treatment system was also observed to generally govern the removal of metallic parameters through hydroxide formation, with overall percentage removals ranging 88–100% achieved. The removal kinetics for SO42- was modelled using two approaches yielding rate constant values of 1.56 and 1.53 L/day mol respectively, thereby confirming authenticity of SO42- removal kinetics experimental data. The study findings provide insights into better understanding of the potential use of slags and their limitations, particularly in mine closure, as part of addressing this challenge in South Africa. DA - 2015-12 DB - ResearchSpace DP - CSIR KW - Acid mine drainage KW - Oxygen furnace slag KW - Neutralization material KW - Slag KW - Kinetics LK - https://researchspace.csir.co.za PY - 2015 SM - 0273-1223 T1 - Passive neutralization of acid mine drainage using basic oxygen furnace slag as neutralization material: experimental and modelling TI - Passive neutralization of acid mine drainage using basic oxygen furnace slag as neutralization material: experimental and modelling UR - http://hdl.handle.net/10204/9113 ER -