scholarly journals Small but mighty: microorganisms offer inspiration for mine remediation and waste stabilisation

2019 ◽  
Author(s):  
Alan Levett ◽  
Emma J Gagen ◽  
Gordon Southam
Keyword(s):  
Mine Remediation

scholarly journals Risk communication and trust in decision-maker action: a case study of the Giant Mine Remediation Plan

2013 ◽  
Vol 72 (1) ◽  
pp. 21184 ◽  
Author(s):  
Cynthia G. Jardine ◽  
Laura Banfield ◽  
S. Michelle Driedger ◽  
Christopher M. Furgal
Keyword(s):  
Risk Communication ◽  
Decision Maker ◽  
Mine Remediation ◽  
Remediation Plan

scholarly journals Geochemical data from waters in Prospect Gulch, San Juan County, Colorado, that span pre- and post-Lark Mine remediation

2011 ◽  
pp. i-4
Author(s):  
Raymond H. Johnson ◽  
Douglas B. Yager ◽  
Hugh D. Johnson
Keyword(s):  
Geochemical Data ◽  
San Juan ◽  
Mine Remediation ◽  
San Juan County

scholarly journals Biocement stabilization of an experimental-scale artificial slope and the reformation of iron-rich crusts

2020 ◽  
Vol 117 (31) ◽  
pp. 18347-18354 ◽  
Author(s):  
Alan Levett ◽  
Emma J. Gagen ◽  
Yitian Zhao ◽  
Paulo M. Vasconcelos ◽  
Gordon Southam
Keyword(s):  
Iron Oxide ◽  
Iron Ore ◽  
Iron Reduction ◽  
Control Experiment ◽  
Mine Waste ◽  
Carbon Sources ◽  
Waste Stabilization ◽  
The Reformation ◽  
Mine Remediation ◽  
Reduction And Oxidation

Novel biotechnologies are required to remediate iron ore mines and address the increasing number of tailings (mine waste) dam collapses worldwide. In this study, we aimed to accelerate iron reduction and oxidation to stabilize an artificial slope. An open-air bioreactor was inoculated with a mixed consortium of microorganisms capable of reducing iron. Fluid from the bioreactor was allowed to overflow onto the artificial slope. Carbon sources from the bioreactor fluid promoted the growth of a surface biofilm within the artificial slope, which naturally aggregated the crushed grains. The biofilms provided an organic framework for the nucleation of iron oxide minerals. Iron-rich biocements stabilized the artificial slope and were significantly more resistant to physical deformation compared with the control experiment. These biotechnologies highlight the potential to develop strategies for mine remediation and waste stabilization by accelerating the biogeochemical cycling of iron.

scholarly journals Microbial Communities Associated With Passive Acidic Abandoned Coal Mine Remediation

2019 ◽  
Vol 10 ◽  
Author(s):  
Truc Ly ◽  
Justin R. Wright ◽  
Nicholas Weit ◽  
Christopher J. McLimans ◽  
Nikea Ulrich ◽  
...  
Keyword(s):  
Microbial Communities ◽  
Coal Mine ◽  
Mine Remediation ◽  
Abandoned Coal Mine

Thiocyanate biodegradation: harnessing microbial metabolism for mine remediation

2018 ◽  
Vol 39 (3) ◽  
pp. 157 ◽  
Author(s):  
Mathew P Watts ◽  
John W Moreau
Keyword(s):  
Cost Effective ◽  
Microbial Metabolism ◽  
Biogeochemical Cycles ◽  
Energy Sources ◽  
Coking Wastewater ◽  
Sulfur Species ◽  
Environmentally Sustainable ◽  
Ore Processing ◽  
Mine Remediation ◽  
Reduced Sulfur

Thiocyanate (SCN–) forms in the reaction between cyanide (CN–) and reduced sulfur species, e.g. in gold ore processing and coal-coking wastewater streams, where it is present at millimolar (mM) concentrations1. Thiocyanate is also present naturally at nM to µM concentrations in uncontaminated aquatic environments2. Although less toxic than its precursor CN–, SCN– can harm plants and animals at higher concentrations3, and thus needs to be removed from wastewater streams prior to disposal or reuse. Fortunately, SCN– can be biodegraded by microorganisms as a supply of reduced sulfur and nitrogen for energy sources, in addition to nutrients for growth4. Research into how we can best harness the ability of microbes to degrade SCN– may offer newer, more cost-effective and environmentally sustainable treatment solutions5. By studying biodegradation pathways of SCN– in laboratory and field treatment bioreactor systems, we can also gain fundamental insights into connections across the natural biogeochemical cycles of carbon, sulfur and nitrogen6.

A PHASED APPROACH FOR DEEP TUNNEL DETECTION USING ELECTRICAL GEOPHYSICS AT A GOLD MINE REMEDIATION SITE

2013 ◽  
Author(s):  
Nicole Pendrigh ◽  
Phil Sirles ◽  
Douglas LaBrecque
Keyword(s):  
Gold Mine ◽  
Deep Tunnel ◽  
Tunnel Detection ◽  
Mine Remediation ◽  
Electrical Geophysics

RESPONSE OF A NEW ZEALAND MAYFLY (DELEATIDIUM SPP.) TO ACID MINE DRAINAGE: IMPLICATIONS FOR MINE REMEDIATION

2008 ◽  
Vol 27 (5) ◽  
pp. 1135 ◽  
Author(s):  
Kathryn O'Halloran ◽  
Jo-Anne Cavanagh ◽  
Jon S. Harding
Keyword(s):  
New Zealand ◽  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Acid Mine ◽  
Mine Remediation
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