Optimization of nanofiltration for treatment of acid mine drainage and copper recovery by solvent extraction

Pino, L.Z.; Beltrán, Eduardo; Schwarz, Alex; Ruiz, M.C.; Bórquez, Rodrigo

doi:10.1016/j.hydromet.2020.105361

Cited by 30 publications

(6 citation statements)

References 41 publications

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“…The devices are easy to operate and consumed energy is mainly spent on creating high pressure over the solution. Disadvantages include the occurrence of the phenomenon of concentration polarization, which leads to a deterioration in the characteristics of membrane devices and the need for preliminary preparation of solutions [43][44][45][46][47][48][49][50][51][52][53].…”

Section: Analysis Of Previous Studiesmentioning

confidence: 99%

Optimization of dose calculation of modified magnetite during sorption purification of water from copper ions to create environmentally friendly technology

et al. 2021

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Due to the growth of man-caused pollution, there is a need to use modern methods of water purification. It is advisable to use sorption methods for the extraction of heavy metals, which are considered to be particularly dangerous. It is established that sorbents based on magnetite are quite effective in the extraction of copper ions. It is shown that the sorption capacity of magnetite-based sorbents towards copper ions depends on the ratio of concentrations of Fe2+ and Fe3+ ions in the reaction mixture, and increases with increasing this indicator from 1/2 to 2. The sorption capacity of the sorbent towards copper ions increases by 4.4 times. It is shown that the efficiency of copper ions removal onto magnetite increases for sorbent modified with sodium sulfide. The proposed scheme provides the possibility of sorption treatment of large volumes of water from copper ions to the norms for the discharge of wastewater into fishery reservoirs. Post-productional magnetite is dehydrated and supplied to metallurgical enterprises for processing. The developed technology of water purification from copper ions is environmentally safe and energy efficient.

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Section: Analysis Of Previous Studiesmentioning

confidence: 99%

Optimization of dose calculation of modified magnetite during sorption purification of water from copper ions to create environmentally friendly technology

et al. 2021

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“…A very recent study has been carried out at a pilotscale level with real AMD in order to determine and estimate the operating conditions for using a commercial NF membrane (NF270) to recover water and concentrate copper, as well as to find how NF can be coupled with SX for the selective copper recovery [32]. The water was acidic (pH 3,5) with high conductivity (5510 S/cm) and high concentrations of some pollutants, in g/L: 4,67 SO 4 2-, 0,53 Cu, 0,38 Al, 44,70 Zn, 72,0 Mn.…”

Section: Membrane Technologies For Treating Amd and Mine Influenced Watermentioning

confidence: 99%

Application of membrane processes in mining and mineral processing

Panayotova

Panayotov

2021

E3S Web Conf.

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Sustainable mining and mineral processing is of paramount importance for producing metals needed for our society development. Membrane processes are able to contribute to the comprehensive extraction of metals from mined ores, while at the same time decrease the amounts of used water and reagents and ensure discharge to the environment of wastewater meeting the legislation requirements. Membranebased technologies are still underused in metals obtaining although their development and price have made their application affordable. The paper presents in brief membrane processes and displays examples of their application in various areas of mining and mineral processing, such as coping with acid mine drainage and mine influenced water, recovery of metals, reagents and water in hydrometallurgy, recovery of lithium from brines, and treatment of wastewater. Emphasis is placed on pressure driven membrane processes, as well as on the very recent studies in the area. Advantages of membrane processes application in mining and mineral processing are pointed out as well as constrains to be overcome.

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“…3 All of this happens naturally, either as a result of rainfall, melting snow, or groundwater. 9 Many ores, mining precious metals, such as gold (Au), copper (Cu), 10 arsenic (As), mercury (Hg), cyanide, and uranium (U), contain high amounts of the poisonous metalloid ions. 11–13 For example, arsenic in most cases comes from mine exploitation, as well as excavating, and regularly has connections to treasured minerals, including sphalerite, pyrite, and chalcopyrite.…”

Section: Introductionmentioning

confidence: 99%

Global research progress on mining wastewater treatment: a bibliometric analysis

Zahoor

Mao

Jia

et al. 2022

Environ. Sci.: Adv.

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Optimization of nanofiltration for treatment of acid mine drainage and copper recovery by solvent extraction

Cited by 30 publications

References 41 publications

Optimization of dose calculation of modified magnetite during sorption purification of water from copper ions to create environmentally friendly technology

Optimization of dose calculation of modified magnetite during sorption purification of water from copper ions to create environmentally friendly technology

Application of membrane processes in mining and mineral processing

Global research progress on mining wastewater treatment: a bibliometric analysis

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