Conference proceedings paper

Developing a Flow-Through Biokinetic Test to Characterize ARD Potential: Investigating the Microbial Metabolic Activity on Pyrite-bearing Waste Rock Surfaces in an Unsaturated Ore Bed


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Publication Details

Author list: Makaula DX, Huddy RJ, Fagan-Endres MA, Harrison STL

Publisher: International Mine Water Association

Place: Pretoria

Publication year: 2018

Start page: 399

End page: 405

Total number of pages: 7

ISBN: 978-0-620-80650-3


Abstract

ARD generation from mine waste rock associated with hard rock sul de and coal mining
poses environmental concerns over time. erefore, it is important to characterise
waste rock material for its acid-forming potential, prior to disposal. In this paper,
column reactors simulating the ow-through, unsaturated packed bed environment of
waste dumps were used to assess acid-forming potential of two pyrite-bearing waste
rocks. Additionally, the activity of mineral-associated microbial populations was visualised
and measured using isothermal microcalorimetry. e work forms the basis for
development of a representative ow-through system, a modi cation of the UCT Biokinetic
test that considers microbial-waste rock surface interaction.


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Last updated on 2019-06-05 at 13:43