Technology: Actiflo ® and Hydrotech™ Discfilter Location: British Columbia, Canada A leading gold mine producer needed a wastewater treatment plant to remove Total Suspended Solids (TSS) and some heavy metals …
Besides AMD treatment, the polyamide NF90 membrane has also been applied in gold mining effluent reclamation. Reis et al. [99] assessed the performance NF90 to recover water from the gas scrubber ...
Abstracts of the International Mine Water Conference 19 th – 23rd October 2009. Proceedings ISBN Number: 978-0-980 Pretoria, South Africa. Produced by: Document Transformation ...
Cyanide in effluents resulting from gold mining is known to be the prime candidate for treatment. However, according to a study by the Ontario Ministry of the Environment (Canada); ammonia, suspended solids and copper were identified as the most important contaminants in gold mining effluents rather than cyanide.
The pilot RO system was deployed in the Camilo Ponce Enríquez sector, one of the most significant gold mining areas in Ecuador, boasting approximately 352 mining concessions, with 11 dedicated to small-scale mining and 233 to artisanal mining [20]. Nevertheless, this zone suffers from inadequate treatment of mining effluents, resulting …
Abstract - Gold mining and ore processing are activities of great economic importance. However, they are related to generation of extremely polluted effluents containing high concentrations of heavy metals and low pH. This study aims to evaluate the optimal conditions for gold mining effluent treatment by crossflow membrane filtration …
The Lihir gold mine discharges ~100,000 ML tailings slurry year −1 (containing ~2.5 Mt solids) from an outfall at 128 m depth on the east coast of the island 12,13 . Mining began in 1996, with a ...
1. Introduction. Mine wastes are the unwanted by‐products left behind after the ores of economic interest have been extracted, and can be solid, liquid or gaseous (Lottermoser, 2010).Mining has occurred for thousands of years, and almost every country has a legacy of mine waste that contains toxic materials including various metals and …
DOI: 10.1016/j.jhydrol.2020.125170 Corpus ID: 224952960; Impacts of gold mine effluent on water quality in a pristine sub-Arctic river @article{Yaraghi2020ImpactsOG, title={Impacts of gold mine effluent on water quality in a pristine sub-Arctic river}, author={Navid Yaraghi and Anna-kaisa Ronkanen and Ali Torabi Haghighi and Mahdi …
Arsenic, iron and cyanide were identified as the major pollutants in the tailings dam wastewater with average concentrations of 4.5, 25.2 and 11.1 mg·L-1, respectively. Arsenic, iron and free CN ...
Mining operations generate effluents containing pollutants such as ammonia, nitrite and nitrate as a result of blasting operations. Cyanide compounds such as free cyanide, cyanate and thiocyanate are also present when cyanide is used in the gold recovery process. In most cases, mine effluent stored in the ponds eventually needs to …
Metal and Diamond Mining Effluent Regulations ( SOR /2002-222) Regulations are current to and last amended on . Previous Versions. See coming into force provision and notes, where applicable. Shaded provisions are not in force. Help.
Amaral et al. [8] proposed a route to treat a gold-mining effluent from the pressure-oxidation (POX) stage by ultrafiltration, nanofiltration and RO (UF-NF-RO) and estimated a cost of 1.137 USD.m ...
This paper investigates different leaching conditions with hydrochloric acid and sulfuric acid, which perform the maximum extraction of cerium, lanthanum, and neodymium from a dephosphorized monazite concentrate obtained from alluvial gold mining waste from the Bagre-Nechí mining district in Colombia, for the subsequent …
These regulations authorize the deposit of effluent from metal and diamond mines into water frequented by fish under subsection 36 (3) of the Fisheries Act. They help protect Canada's lakes and rivers by setting strict limits on the quality of effluent that can be discharged and by requiring effluent testing, monitoring and reporting.
Introduction to Mining Wastewater Treatment: The Overall Guide. Mining waste comprises different types of rock, overburden, slurry and tailings from the processes of excavation and dressing. Further physical and chemical processing of a wide range of materials create additional waste from mining operations. Therefore, mine wastewater …
This paper examines waste management challenges at Renco Mine (Zimbabwe) and makes several recommendations at the end. Keywords: gold mining, waste, challenges, Renco Mine, Zimbabwe 1. Introduction Mine disasters have been a focal point among mine operators, safety and health personnel, and miners, as well as mine safety and health …
Ricci et al. [97] combined the MF-NF with the RO process to improve the permeate quality and recover noble metals and sulfuric acid during the treatment of gold mining effluent generated by ...
The liquid waste, following precipitation of the raw solution with zinc sulfate, was also studied and after 5 h the percentage removals of cupric ion were 90.63, 71.49 and 90.63, respectively. Analysis showed that in the process of electric adsorption, the ions in solution interacted by directional migration, enrichment precipitation and ...
This study investigated the contribution of artisanal gold mining and processing activities at the Macalder Mine, Kenya to iron (Fe), copper (Cu), lead (Pb), zinc (Zn), and nickel (Ni) levels in the drinking water of the nearby Macalder Stream and River Kuja. A tailings dump of an abandoned gold mine in the area is the source of the …
Request PDF | Comprehensive bench- and pilot-scale investigation of NF for gold mining effluent treatment: Membrane performance and fouling control strategies | Despite being widely used, large ...
This paper studied the removal of heavy metals from gold mining effluent (GME) of the AngloGold Ashanti mine (Obuasi, Ghana) in continuous down-flow fixed bed columns using coconut shell and iron oxide-coated sand as sorbents operated at a temperature of 28 ± 2 °C and a constant flow-rate of 150 mL min − 1.The two-stage …
Arsenic was found to be significantly reduced with CKD-HDS treatment of Fe/Zn-AMD compared to lime-HDS treatment, to concentrations below the stringent mine effluent discharge regulation of 0.10 ...
SAVMIN. SAVMIN is Mintek's trademarked cost-effective technology for the treatment of mine-impacted water, including AMD that contain high levels of metals and sulphates. The SAVMIN process, which was developed by Mintek in the 1990's, is a precipitation-based process, operating at atmospheric temperature and pressure, and …
Traditionally acid mine water is neutralised with lime. Limestone is a cheaper alternative for such applications. A case study showed that limestone can be used effectively to replace lime for the neutralization of arsenic rich acid water. The cost of limestone treatment is 45.8% less than that of lime. The acidity can be removed from …
@article{Reis2018ComparisonON, title={Comparison of Nanofiltration and Direct Contact Membrane Distillation as an alternative for gold mining effluent reclamation}, author={Beatriz Gasparini Reis and Ana L{'i}via B. Ara{'u}jo and M{'i}riam Cristina Santos Amaral and Helen Conceiç{~a}o Ferraz}, journal={Chemical …
This review first highlights current strategies for improving the acid resistance of PA TFC NF membranes by regulating the composition and structure of the separation layer of the membrane performed by manipulating and optimizing the construction method and then summarizes the separation performances of these acid …
@article{Andrade2017ComprehensiveBA, title={Comprehensive bench- and pilot-scale investigation of NF for gold mining effluent treatment: Membrane performance and fouling control strategies}, author={Laura Hamdan de Andrade and Alice Oliveira Aguiar and Wadson Pires and Luiza B. Grossi and M{'i}riam Cristina Santos Amaral}, …
In this study, remote sensing and mining-related GIS data were used to identify and analyze 1233 (ultra-)mafic magmatic mine area polygons in China, which covered approximately 322.96 km 2 of land ...
The effluent from the pressure-oxidation process was supplied by a gold mining company located in the state of Minas Gerais, Brazil. The effluent is characterized by high acidity (median pH was 1.30) and high metal concentrations ( Table 1 ).
The removal of heavy metals from gold mining effluent was studied in pilot columns. •. 14.8 m 3 of effluent was treated prior to As breakthrough in the system. •. The removal efficiency exceeded 98% in all the cases studied. •. Cu, As and Fe uptake amounted to 16.1, 12.7 and 5.5 mg g -1, respectively. •.
Section snippets Physical processing. Physical processing methods are widely applied in mineral separation. In the case of gold ores, physical separation can be employed to produce concentrates, and in the case of free-milling ores or to produce gold intermediate-enriched mineral products, by rejecting gangue material, which facilitates …
Sustainable gold mining wastewater treatment . by sorption using low -cost materials . MIKE AGBESI ACHEAMPONG
Acid mine drainage (AMD) is an effluent characterized by low pH and high concentrations of sulfate, metals, and metalloids. AMD treatment by membrane separation processes (MSP), specifically nanofiltration (NF) and reverse osmosis (RO) is particularly interesting; as these processes can retain divalent ions efficiently to produce …
Mine tailings (MTs) are the materials dumped on a mining site after mineral extraction, containing scattered traces of residual minerals, dug-up soils, and a disturbed ecosystem. Abandoned and untreated MT can pose threats to the surrounding ecosystem due to the presence of various primary and secondary toxic components, such as …
Mining has led to severe environmental pollution in countries with exhaustive mining production and inadequate industrial waste regulation. Microorganisms in contaminated sites, like mine tailings ...
Jerie, S. and Sibanda, E. 2010 "The Environmental Effects of Effluent Disposal at Gold Mines in Zimbabwe: A Case Study of Tiger Reef Mine in Kwekwe, Journal of Sustainable Development in Africa Volume 12, No.3 Clarion University of Pennsylvania, Clarion, Pennsylvania. Kunambura, A. 2017 ZMDC gold mine fend off debtors. The Financial …
