Abstract
This study investigated the impact of mine wastewater disposal to a nearby river (the Bargo River). Mean electrical conductivity (EC) increased in surface waters below the mine discharge, rising more than six times from (219.5 μS/cm) upstream to 1551 μS/cm below the waste inflow. River pH increased from 7.12 (upstream) to 8.67 (downstream). The mine discharge strongly modified the ionic composition of the river. The mean concentration of several metals in the river were increased due to the mine wastewater. Nickel increased from 1.0 μg/L (upstream) to 32 μg/L (downstream). Zinc increased from 3.5 μg/L (upstream) to 23.5 μg/L (downstream). Our study also assessed the biological uptake of pollutants by growing weeping willow (Salix babylonica) cuttings in mine wastewater and contrasting to 'control' cuttings grown in river water from upstream of the mine. After growing in the laboratory for several weeks, the cuttings accumulated metals, dominated by barium, strontium and lithium. Results from the study constituted one of the most detailed geochemical and ecological studies investigating the impact of the coal mine waste discharge to an Australian river. Recommendations are suggested for improved regulation of the mine discharge to reduce its wastewater environmental impact.
| Original language | English |
|---|---|
| Title of host publication | IOP Conference Series: Earth and Environmental Science. Volume 344, The 5th International Conference on Water Resource and Environment (WRE 2019), 16-19 July 2019, Macao, China |
| Publisher | IOP Publishing |
| Number of pages | 7 |
| DOIs | |
| Publication status | Published - 2019 |
| Event | International Conference on Water Resource and Environment - Duration: 16 Jul 2019 → … |
Publication series
| Name | |
|---|---|
| ISSN (Print) | 1755-1315 |
Conference
| Conference | International Conference on Water Resource and Environment |
|---|---|
| Period | 16/07/19 → … |
Open Access - Access Right Statement
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence (https://creativecommons.org/licenses/by/3.0/au/). Any further distribution of this work must maintain attribution to the author(s) and the title of the work_journal citation and DOI.UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 6 Clean Water and Sanitation
Keywords
- Australia
- coal mine waste
- coal mines and mining
- pollution
- rivers
- waste disposal
- water
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