Next Article in Journal / Special Issue
Microbial Diversity and Community Assembly across Environmental Gradients in Acid Mine Drainage
Previous Article in Journal
The Influence of Ca2+ and pH on the Interaction between PAHs and Molybdenite Edges
Previous Article in Special Issue
Control of Acid Generation from Pyrite Oxidation in a Highly Reactive Natural Waste: A Laboratory Case Study
Open AccessArticle

Heterotrophic Microbial Stimulation through Biosolids Addition for Enhanced Acid Mine Drainage Control

1
School of Natural and Built Environments, University of South Australia, Mawson Lakes, SA 5095, Australia
2
Blue Minerals Consultancy, Middleton, SA 5213, Australia
3
Future Industries Institute, University of South Australia, Mawson Lakes, SA 5095, Australia
4
Levay and Co. Environmental Services, Edinburgh, SA 5111, Australia
*
Author to whom correspondence should be addressed.
Minerals 2017, 7(6), 105; https://doi.org/10.3390/min7060105
Received: 11 May 2017 / Revised: 14 June 2017 / Accepted: 15 June 2017 / Published: 19 June 2017
(This article belongs to the Special Issue Biogeochemistry of Acid Mine Drainage)
The effective control and treatment of acid mine drainage (AMD) from sulfide-containing mine wastes is of fundamental importance for current and future long-term sustainable and cost-effective mining industry operations, and for sustainable management of legacy AMD sites. Historically, AMD management has focused on the use of expensive neutralising chemicals to treat toxic leachates. Accordingly, there is a need to develop more cost-effective and efficient methods to prevent AMD at source. Laboratory kinetic leach column experiments, designed to mimic a sulfide-containing waste rock dump, were conducted to assess the potential of organic waste carbon supplements to stimulate heterotrophic microbial growth, and supress pyrite oxidation and AMD production. Microbiological results showed that the addition of biosolids was effective at maintaining high microbial heterotroph populations and preventing AMD generation over a period of 80 weeks, as verified by leachate chemistry and electron microscopy analyses. This research contributes to the ongoing development of a cost effective, multi-barrier geochemical-microbial control strategy for reduced mineral sulfide oxidation rates at source. View Full-Text
Keywords: acid mine drainage (AMD); bioremediation; biosolids; heterotrophs; kinetic leach column; organic carbon acid mine drainage (AMD); bioremediation; biosolids; heterotrophs; kinetic leach column; organic carbon
Show Figures

Figure 1

MDPI and ACS Style

Ogbughalu, O.T.; Gerson, A.R.; Qian, G.; Smart, R.S..C.; Schumann, R.C.; Kawashima, N.; Fan, R.; Li, J.; Short, M.D. Heterotrophic Microbial Stimulation through Biosolids Addition for Enhanced Acid Mine Drainage Control. Minerals 2017, 7, 105.

AMA Style

Ogbughalu OT, Gerson AR, Qian G, Smart RSC, Schumann RC, Kawashima N, Fan R, Li J, Short MD. Heterotrophic Microbial Stimulation through Biosolids Addition for Enhanced Acid Mine Drainage Control. Minerals. 2017; 7(6):105.

Chicago/Turabian Style

Ogbughalu, Omy T.; Gerson, Andrea R.; Qian, Gujie; Smart, Roger St. C.; Schumann, Russell C.; Kawashima, Nobuyuki; Fan, Rong; Li, Jun; Short, Michael D. 2017. "Heterotrophic Microbial Stimulation through Biosolids Addition for Enhanced Acid Mine Drainage Control" Minerals 7, no. 6: 105.

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop