Geochemistry, mining and the environment

Jennett, J. Charles; Wixson, Bobby G.

doi:10.1007/bf02084895

Cited by 8 publications

(7 citation statements)

References 9 publications

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“…In copper ores flotation, for instance, water consumption ranges from 1.5 to 3 m³/t [12,54]. Milling and flotation of Pb-Zn polymetallic ores require water flow rates in the order of 6000 L/h [58]. As for the production of one tonne of metallic copper, for instance, it requires approximately 13.6 m³ of water, that is, from the mining of ores until their flotation beneficiation.…”

Section: Water Supply To An Ore Concentratormentioning

confidence: 99%

Review of Wastewater Treatment Technologies in View of their Application in the DR Congo Mining Industry

Lutandula⃰

Mpanga

2021

Glob. Environ. Eng.

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The world is currently experiencing a water crisis in terms of both quantity and quality due to water ever-growing demand in large-scale consumer sectors such as agriculture, industry and tourism. This crisis results from the increasing pressure on water resources brought about the world population growth, continued urbanization and rapid industrialization as sources of an increased release of contaminated water into watercourses. Faced with this worrying situation, strategies have been developed throughout the world for improving both the availability and access to water. Different technologies, both established and emerging ones, are utilized in view to treat wastewaters, including those of the mining origin. The present work reviews the different uses of water in the mining industry and identifies its different sources of polluted water. It analyses some wastewater treatment techniques and their applicability in the reclamation of wastewater generated by the DR Congo mining industry. The adopted approach, in dealing with the relevant issue of water crisis experienced worldwide in terms of both quantity and quality, is expected to help improving practices in the management of wastewater of mining origin, increasing access to water and its sustainable use.

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Section: Water Supply To An Ore Concentratormentioning

confidence: 99%

Review of Wastewater Treatment Technologies in View of their Application in the DR Congo Mining Industry

Lutandula⃰

Mpanga

2021

Glob. Environ. Eng.

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“…Both Fe(OH) 2 and Fe(OH) 3 are insoluble and can act as in situ generated coagulants. The iron(III) species possess higher charge density, compared to Fe(II), favoring the coagulation-flocculation process thus being more effective at smaller doses.…”

Section: Resultsmentioning

confidence: 99%

“…Organic compounds can also be reduced by accepting electrons from the cathode or catching the hydrogen produced by reactions (1) or (2).…”

Section: Electrochemical Treatment Basics -In Briefmentioning

confidence: 99%

Electrochemical conditioning of recycled flotation wastewater for flotation results improving

Panayotova

Panayotov

2021

E3S Web Conf.

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Flotation of minerals, an important part of the chain of metals production for our society, needs huge amounts of water. This industry can contribute to the sustainable use of water and circular economy development by utilizing its own production wastewater. However, reuse of clarified water without additional treatment may cause worsening of flotation results. Electrocoagulation of this water with mild steel sacrificial anodes, complemented by electroflotation is able to decrease the chemical oxygen demand (COD) and dissolved organic carbon (DOC) of the treated water, i.e. to remove at least partially the residual organic reagents. For the studied case 66 % of COD and nearly 32 % of DOC were removed by electrocoagulation with mild steel electrodes at energy consumption of 0, 458 kWh/m3. This warrants better results of lead-zinc flotation carried out with treated water, in comparison to the case of use of untreated water, and contributes to freshwater saving. Treated water ensured outcomes of lead-zinc flotation comparable to the results found at use of fresh tap water.

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“…A mineral processing plant treating polymetallic leadzinc ores is requiring about 6000 L/h of water for ore grinding and flotation (Jennett and Wixson 2005). This huge water demand has forced the majority of Chilean mining companies to treat and reuse their process wastewaters until complete quality deterioration before letting them to be ultimately stocked in ponds (Bosse et al 2007).…”

Section: Background and Discussionmentioning

confidence: 99%

Bio-treatment and water reuse as feasible treatment approaches for improving wastewater management during flotation of copper ores

Lutandula⃰

Mutiti

2016

Int. J. Environ. Sci. Technol.

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Established and emerging technologies for treatment of flotation wastewaters are compared and discussed in the context of their applicability during the management of wastewaters from Cu-Co ores processing through flotation in the Katanga province of the Democratic Republic of Congo. The effects from water recycling on water quality and flotation performance are briefly presented in parallel. The ore processing schemes and the wastewater management practices at two operational concentrators are illustrated as study cases and their peculiarities outlined. A reference to a copper concentrator in a nearby Zambia is addressed for comparative purpose. Based on analysis of the findings, the clarification, biotreatment inside the tailing ponds or the use of constructed wetlands as polishing stage prior to water reuse are suggested as feasible treatment approaches in view improving the management practice of flotation wastewaters during the dressing of copper ores in the Katanga province.

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Geochemistry, mining and the environment

Cited by 8 publications

References 9 publications

Review of Wastewater Treatment Technologies in View of their Application in the DR Congo Mining Industry

Review of Wastewater Treatment Technologies in View of their Application in the DR Congo Mining Industry

Electrochemical conditioning of recycled flotation wastewater for flotation results improving

Bio-treatment and water reuse as feasible treatment approaches for improving wastewater management during flotation of copper ores

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