Conference Agenda

Overview and details of the sessions of this Conference. Please select a date or location to show only sessions at that day or location. Please select a single session for detailed view (with abstracts and downloads if available).

Please note that all times are shown in the time zone of the conference. The current conference time is: 17th Aug 2022, 05:45:22am BST

 
 
Session Overview
Session
Mine Drainage Chemistry & Passive Treatment
Time:
Wednesday, 14/July/2021:
12:40pm - 2:45pm

Session Chair: Arabella Mary Louise Moorhouse-Parry
Location: Meeting Room 1


Show help for 'Increase or decrease the abstract text size'
Presentations
12:40pm - 1:05pm
ID: 575 / S_6_1: 1
Full Paper - Oral Presentation
Topic: 1 Mine Drainage Chemistry, 8 Mine Hydrogeology
Way of Presentation: Live
Keywords: stream sediment, Sabie River, acid-producing minerals, acid-neutralizing minerals, toxiciy

🎓 Seasonal Geochemical Variation of Sediments in the Sabie River, Mpumalanga, South Africa

Rudzani Lusunzi1,2, Frans Waanders2, Robert Khashane Tshishonga Netshitungulwana1

1Council for Geoscience, South Africa; 2North West University, South Africa

There was no significant variation observed in terms of metal dispersion (Cr, Zn, Cu, Ni, Pb, As) during wet and dry seasons respectively. The mineralogy of sediments indicated that acid-producing minerals hematite and jarosite found in mine wastes are potential sources of pollution to the Sabie River. The CF, PLI and Igeo showed that sediments were unpolluted to extremely polluted by As. Acid-neutralizing mineral dolomite found in the sediments can act as buffers for potential acid. There was no evidence of metal dispersion from the Nestor tailings storage facility to the adjacent water resources, Klein-Sabie and Sabie River respectively.

Bibliography
Title: Geochemical and Mineralogical Characterization of Gold Mine Tailings for the Potential of Acid Mine Drainage in the Sabie-Pilgrim’s Rest Goldfields, South Africa
Year: 9th Int'l Conf. on Research in Chemical, Agricultural, Biological & Environmental Sciences (RCABES-2017) Nov. 27-28, 2017 Parys, South Africa 272
Title: Geochemical and Mineralogical Characterization of Gold Mine Tailings for the Potential of Acid Mine Drainage in the Sabie-Pilgrim’s Rest Goldfields
Year: IMWA 2017, Mine Water and Circular Economy Vol III.- p 1381-1388; Lappeenranta, Finland (Lappeenranta University of Technology)
Title : Acid Base Accounting (ABA) of mine tailings for the Potential of Acid Mine Drainage in the Sabie-Pilgrim’s Rest Goldfields, South Africa – In: Wolkersdorfer, Ch.; Sartz, L.; Weber, A.; Burgess, J. & Tremblay, G.: Mine Water – Risk to Opportunity (Vol I). – p. 146 – 151; Pretoria, South Africa (Tshwane University of Technology).
Year: ICARD11/IMWA 2018 (CSIR, South Africa)
Title: Geochemical and Mineralogical Characterization of Precipitates from Sabie-Pilgrim’s Rest Goldfields for the Potential of Acid Mine Drainage
Year: IMWA 2019 Proceedings, Wolkersdorfer, Ch.; Khayrulina, E.; Polyakova, S.; Bogush, A. (Editors)


1:05pm - 1:30pm
ID: 588 / S_6_1: 2
Full Paper - Oral Presentation
Topic: 1 Mine Drainage Chemistry, 7 Mine Closure, 8 Mine Hydrogeology
Keywords: increasing water influx, hydraulic prospecting, mine drainage facility

Evaluation Of A Short Period Increasing Water Influx In A Mine Drainage Facility Of A Former Hard Coal Mine

Birgitta Wiesner

RAG AG, Germany

RAG AG currently operates a mine drainage facility at the abandoned coal mine Amalie in the city of Essen, Germany. Throughout April 2020 a short-term increased water influx occurred at this mining site at one dam. To identify on-going processes in the mining plant water chemistry was analysed and investigated. One result was, that the break of a dam lead to a new water influx into the water system of the mine. This new water influx resulted in a permanently higher amount of water entering the mine and a significantly change in water composition by increased amounts of dissolved salts.

Bibliography
no recent publications by the first author exist


1:30pm - 1:55pm
ID: 618 / S_6_1: 3
Full Paper - Oral Presentation
Topic: 1 Mine Drainage Chemistry
Keywords: rare earth elements, acid mine drainage, coal mine reclamation, beneficial use of coal combustion residues, flue gas desulfurization by-products

Recovering Rare Earth Elements from Acid Mine Drainage with Mine Land Reclamation

Chin-Min Cheng, Tarunjit Butalia, John Lenhart, Jeffrey Bielicki

The Ohio State University, United States of America

In this study, we demonstrated a trap-extract-precipitate (TEP) process that effectively recovers rare earth elements (REEs) from coal mine drainage (CMD). This three-stage TEP process uses environmentally benign industrial by-products to retain CMD REEs from CMD. It then applies an extraction/precipitation procedure to produce a concentrate feedstock (>7.5 wt. % of total REEs) that can be economically processed to produce marketable rare earth oxides. We envision the TEP process can be integrated with abandoned mine land reclamation to create a commercially viable approach to mitigate CMD and restore lands that are adversely impacted by historical mining.

Bibliography
1.Wu, Q., Shi, N., Wang, T., Cheng, Chin-Min, Wang, J., Tian, C., Pan, W.-P., Enrichment and chemical speciation of rare earth elements during coal and coal gangue combustion, Submitted to Applied Energy.
2.Anderson, W.V., Cheng, Chin-Min, Butalia, T. Weavers, L., A Forward Osmosis – Membrane Distillation Process Applied to Flue Gas Desulfurization Wastewater, Energy and Fuel, Accepted.
3.Cheng, Chin-Min, Amaya, M., Lin, S., Su, Q., Wu, M.-C., Butalia, T., and Wolfe, W., Leaching Characterization of Dry Flue Gas Desulfurization Materials Produced from Different Flue Gas Sources in China, Fuel (2017), 204, pp. 195-205.
4.Cheng, Chin-Min, Amaya, M., Butalia, T.S., Baker, R., Walker, H., Massey-Norton, J., Wolfe, W., Short-term Influence of Coal Mine Reclamation using Coal Combustion By-Products on Groundwater Quality, Science of the Total Environment (2016), 571, pp. 834-854. DOI: 10.1016/j.scitotenv.2016.07.061


1:55pm - 2:20pm
ID: 619 / S_6_1: 4
Full Paper - Oral Presentation
Topic: 1 Mine Drainage Chemistry
Keywords: coal mine drainage, rare earth elements, abandoned coal mine, mine drainage chemistry

Distributions of Rare Earth Elements in Coal Mine Drainages

Chin-Min Cheng, Tarunjit Butalia, John Lenhart, Jeffrey Bielicki

The Ohio State University, United States of America

In the U.S., rare earth elements (REEs) are reported to be closely associated with coal deposits, especially in the Appalachian Basins. Historical coal mining in the Northern Appalachian Coal field of the United States has produced significant amount of coal drainage (CMD). In this study, we investigated 29 abandoned CMDs in eastern Ohio, USA. The main objective of this study is to understand the geochemical behavior of REEs in CMD. Results obtained from this study provide the knowledge that will form the basis of a reactive transport model, which can be used to predict REE retention and recovery.

Bibliography
1.Wu, Q., Shi, N., Wang, T., Cheng, Chin-Min, Wang, J., Tian, C., Pan, W.-P., Enrichment and chemical speciation of rare earth elements during coal and coal gangue combustion, Submitted to Applied Energy.
2.Anderson, W.V., Cheng, Chin-Min, Butalia, T. Weavers, L., A Forward Osmosis – Membrane Distillation Process Applied to Flue Gas Desulfurization Wastewater, Energy and Fuel, Accepted.
3.Cheng, Chin-Min, Amaya, M., Lin, S., Su, Q., Wu, M.-C., Butalia, T., and Wolfe, W., Leaching Characterization of Dry Flue Gas Desulfurization Materials Produced from Different Flue Gas Sources in China, Fuel (2017), 204, pp. 195-205.
4.Cheng, Chin-Min, Amaya, M., Butalia, T.S., Baker, R., Walker, H., Massey-Norton, J., Wolfe, W., Short-term Influence of Coal Mine Reclamation using Coal Combustion By-Products on Groundwater Quality, Science of the Total Environment (2016), 571, pp. 834-854. DOI: 10.1016/j.scitotenv.2016.07.061


2:20pm - 2:45pm
ID: 650 / S_6_1: 5
Full Paper - Oral Presentation
Topic: 2 Passive Treatment Innovation, Bio-Geochemical Systems
Way of Presentation: Pre-Recorded
Keywords: Photocatalysis, passive, remediation, emissions, tailings

Passive Solar Photocatalytic Treatment in Mining Process-affected Water

Jeffrey Thomas Martin1, Tim Leshuk1,2, Brad Wilson1,3, Zac Young1, Frank Gu1,2

1H2nanO Inc., 151 Charles St. W., Suite 299, Kitchener, ON, Canada; 2University of Toronto, Department of Chemical Engineering and Applied Chemistry, 200 College St., Toronto, ON, Canada; 3Stantec, 100-300 Hagey Boulevard, Waterloo, ON, Canada

H2nanO Inc. has developed SolarPass, a floating reactive barrier comprised of buoyant photocatalyst beads that provides a passive, light-activated treatment process for target contaminants, while simultaneously blocking volatile emissions. Recently, H2nanO validated the efficacy of SolarPass for in-situ treatment of mining tailings water through an outdoor pilot-scale system in Alberta, Canada. Under natural sunlight illumination, target contaminants were degraded, including volatile sulfurous compounds and organics, while simultaneously reducing emissions by >70%. These results demonstrate that the novel SolarPass process can address diverse challenges with mining-influenced waters and provides an effective solution for passive tailings and process water management and remediation.

Bibliography
Martin J, Kolliopoulos G, Papangelakis VG (2020a) Process water recovery via forward osmosis: Membrane and integrated process development. Water Sci Technol 81:2291–2299. https://doi.org/10.2166/wst.2020.256

Martin JT, Kolliopoulos G, Papangelakis VG (2020b) An improved model for membrane characterization in forward osmosis. J Memb Sci. https://doi.org/10.1016/j.memsci.2019.117668

Kolliopoulos G, Martin JT, Papangelakis VG (2018) Energy requirements in the separation-regeneration step in forward osmosis using TMA–CO2–H2O as the draw solution. Chem Eng Res Des 140:166–174. https://doi.org/10.1016/j.cherd.2018.10.015


 
Contact and Legal Notice · Contact Address:
Privacy Statement · Conference: IMWA 2021
Conference Software - ConfTool Pro 2.6.144+TC
© 2001–2022 by Dr. H. Weinreich, Hamburg, Germany