A comparison of measured and predicted diffusion coefficients applied to sand and silt sized acid mine drainage materials
D Dettrick, J Costello, M Arora, S Yuen
JOURNAL OF ENVIRONMENTAL MANAGEMENT | ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD | Published : 2019
Determining the rate at which Acid Mine Drainage (AMD) sulfide oxidation occurs in mining waste products is a central requirement for safe and sustainable long term design of storages, including tails storage facilities, ore stockpiles and waste rock dumps. Inappropriate design can result in AMD acidification, mobilisation of heavy metals and pollution of ground and surface waters. The use of soil gas (oxygen) transport modelling to model AMD based sulfide oxidation and potential acidity loads is widespread, but diffusion coefficients used for modelling are based on existing diffusion coefficient models derived for natural and agricultural soils. Mining wastes are often well sorted due to mi..View full abstract
Much of the research in this paper builds off the published and unpublished ideas and approaches in the management of acid and metalliferous drainage that have been developed by Earth Systems, and particularly Dr Jeff Taylor, over the last two decades. I would like to acknowledge this pioneering work and the ongoing support that has been provided by Earth Systems and some of its past and present senior staff. I would also like to acknowledge the support of an Australian Postgraduate Award scholarship during much of the research.