Comprehensive bench- and pilot-scale investigation of NF for gold mining effluent treatment: Membrane performance and fouling control strategies

Andrade, Laura Hamdan de; Aguiar, Alice; Pires, W. L.; Grossi, Luiza B.; Amaral, Míriam Cristina Santos

doi:10.1016/j.seppur.2016.09.048

Cited by 31 publications

(11 citation statements)

References 63 publications

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“…(2) Higher cross-flow velocity can reduce the thickness of the boundary layer and mitigate the concentration polarization, thus reducing membrane fouling [73]. However, excessive cross-flow velocity would increase energy consumption and may also cause damage to the selective layer.…”

Section: Operating Conditionsmentioning

confidence: 99%

“…In general, the influence of operating conditions on treatment efficiency can be obtained as follows: (1) Although higher operating pressure can improve permeate flux and treatment efficiency, it should be noted that membrane fouling would be aggravated once the permeate flux exceeds a critical value [ 72 ]; so, the pressure should not be too high. (2) Higher cross-flow velocity can reduce the thickness of the boundary layer and mitigate the concentration polarization, thus reducing membrane fouling [ 73 ]. However, excessive cross-flow velocity would increase energy consumption and may also cause damage to the selective layer.…”

Section: Factors Influencing the Efficiency Of Brackish Water Treatment With Nfmentioning

confidence: 99%

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Progress in Research and Application of Nanofiltration (NF) Technology for Brackish Water Treatment

et al. 2021

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Brackish water is a potential fresh water resource with lower salt content than seawater. Desalination of brackish water is an important option to alleviate the prevalent water crisis around the world. As a membrane technology ranging between UF and RO, NF can achieve the partial desalination via size exclusion and charge exclusion. So, it has been widely concerned and applied in treatment of brackish water during the past several decades. Hereon, an overview of the progress in research on and application of NF technology for brackish water treatment is provided. On the basis of expounding the features of brackish water, the factors affecting NF efficiency, including the feed water characteristics, operating conditions and NF membrane properties, are analyzed. For the ubiquitous membrane fouling problem, three preventive fouling control strategies including feed water pretreatment, optimization of operating conditions and selection of anti-fouling membranes are summarized. In addition, membrane cleaning methods for restoring the fouled membrane are discussed. Furthermore, the combined utilization of NF with other membrane technologies is reviewed. Finally, future research prospects are proposed to deal with the current existing problems. Lessons gained from this review are expected to promote the sustainable development of brackish water treatment with NF technology.

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Section: Operating Conditionsmentioning

confidence: 99%

Section: Factors Influencing the Efficiency Of Brackish Water Treatment With Nfmentioning

confidence: 99%

Progress in Research and Application of Nanofiltration (NF) Technology for Brackish Water Treatment

et al. 2021

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“…Studies have been conducted also on membrane processes application to PLS from a pressure-oxidation (POX) of refractory gold ores [38,39]. POX represents a hydrometallurgical oxidation of concentrated ore pulp under high pressure (20 bar) and temperature (135-200 o C).…”

Section: Membrane Technologies For Pls Concentrationmentioning

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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“…Some investigations have been published on wastewater treatment and recovery of heavy metals from the mining effluents by various pressure-driven polymeric UF/NF and RO systems [206][207][208][209][210][211][212][213][214][215][216][217][218][219] , and has shown that polymeric NF and RO have quite similar efficiency in the removal of heavy metals from mining effluent. However, applying polymeric NF due to higher flux, acceptable rejection efficiency and, lower energy consumption was more appropriate than RO at comparatively low-temperatures.…”

Section: Mining Industrymentioning

confidence: 99%

The application of pressure-driven ceramic membrane technology for the treatment of industrial wastewaters – A review

Samaei

Gato-Trinidad

Altaee

2018

Separation and Purification Technology

261

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This paper presents a review of the previous laboratory analysis and case studies on the application of the pressure-driven ceramic membrane technology for treatment of industrial wastewaters. Ceramic membranes has attracted remarkable interests in recent decades for industrial wastewater treatment because of their superior characteristic such as high fluxes , reliable working lifetime under aggressive operating conditions and ease of cleaning. The literature review revealed that the efficiency of this technology has been proven in a wide variety of wastewaters from different industries and activities including pulp and paper, textile, pharmaceutical, petrochemical, food and mining. However, there are still challenges and questions for this technology that need to be addressed in future researches such as investment cost optimisation by introducing new fabrication technologies, selectivity, permeability and packing densities improvement, fouling minimisation and proposing scale up based on experimental research results.

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Comprehensive bench- and pilot-scale investigation of NF for gold mining effluent treatment: Membrane performance and fouling control strategies

Cited by 31 publications

References 63 publications

Progress in Research and Application of Nanofiltration (NF) Technology for Brackish Water Treatment

Progress in Research and Application of Nanofiltration (NF) Technology for Brackish Water Treatment

Application of membrane processes in mining and mineral processing

The application of pressure-driven ceramic membrane technology for the treatment of industrial wastewaters – A review

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