Recovery of precious metals from industrial wastewater towards resource recovery and environmental sustainability: A critical review

Nakhjiri, Ali Taghvaie; Sanaeepur, Hamidreza; Amooghin, Abtin Ebadi; Shirazi, Mohammad Mahdi A.

doi:10.1016/j.desal.2021.115510

Cited by 95 publications

(43 citation statements)

References 297 publications

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“…As a result, further stages of metal separation significantly limit the wide selection of techniques for solvent extraction, electrowinning, precipitation, or ion-exchange. Other techniques show low application potential or are part of a hybrid system (due to low efficiency and selectivity) [ 111 , 112 ]. Recovery of PMs using supported liquid membranes has been the subject of broad investigation by numerous researchers throughout the world.…”

Section: Platinum Group Metalsmentioning

confidence: 99%

Recovery of Metals from Wastewater—State-of-the-Art Solutions with the Support of Membrane Technology

Staszak

Wieszczycka

2023

Membranes

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This paper discusses the most important research trends in the recovery of metals from industrial wastewater using membrane techniques in recent years. Particular attention is paid to the preparation of new membranes with the required filtration and separation properties. At the same time, possible future applications are highlighted. The aspects discussed are divided into metals in order to clearly and comprehensibly list the most optimal solutions depending on the composition of the wastewater and the possibility of recovering valuable components (metalloids, heavy metals, and platinum group metals). It is shown that it is possible to effectively remove metals from industrial wastewater by appropriate membrane preparation (up to ~100%), including the incorporation of functional groups, nanoparticles on the membrane surface. However, it is also worth noting the development of hybrid techniques, in which membrane techniques are one of the elements of an effective purification procedure.

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Section: Platinum Group Metalsmentioning

confidence: 99%

Recovery of Metals from Wastewater—State-of-the-Art Solutions with the Support of Membrane Technology

Staszak

Wieszczycka

2023

Membranes

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“…We believe both are important to discuss, especially as attention toward this research field grows rapidly. There are also many other separation processes that are relevant to resource recovery but are not driven by the properties of material technologies and consequently will not be discussed in this review, such as hydrometallurgy [26,27] (e.g., solvent extraction, chemical precipitation), coagulation/flocculation, [14] and biochemical processes. [28] 2.…”

Section: Introductionmentioning

confidence: 99%

Material Design Strategies for Recovery of Critical Resources from Water

et al. 2023

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Population growth, urbanization, and decarbonization efforts are collectively straining the supply of limited resources that are necessary to produce batteries, electronics, chemicals, fertilizers, and other important products. Securing the supply chains of these critical resources via the development of separation technologies for their recovery represents a major global challenge to ensure stability and security. Surface water, groundwater, and wastewater are emerging as potential new sources to bolster these supply chains. Recently, a variety of material‐based technologies have been developed and employed for separations and resource recovery in water. Judicious selection and design of these materials to tune their properties for targeting specific solutes is central to realizing the potential of water as a source for critical resources. Here, the materials that are developed for membranes, sorbents, catalysts, electrodes, and interfacial solar steam generators that demonstrate promise for applications in critical resource recovery are reviewed. In addition, a critical perspective is offered on the grand challenges and key research directions that need to be addressed to improve their practical viability.

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“…13 Using discarded e-waste materials as electrodes for electrochemical sensing applications will be both a sustainable and cost-effective approach since the commonly used electrodes such as silver (Ag), platinum (Pt), gold (Au), and palladium (Pd) are expensive. 14 Additionally, the current innovation provides an economical solution for managing or reducing the increasing amount of e-waste generated in the environment. Hence, reusing the disposed LCDs as electrodes in electrochemical sensing applications will open up new avenues toward cost-effective and sustainable methods for upcycling hazardous e-waste.…”

Section: ■ Introductionmentioning

confidence: 99%

Conversion of Electronic Waste to an Electrochemical Sensor for Dopamine: Using MXene-Modified Liquid Crystal Display Panels

Vaishag,

Mohandas,

Mufeeda

et al. 2023

ACS Sustainable Chem. Eng.

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In this study, we report a novel sensing platform based on used liquid crystal display (LCD) as a working electrode in electrochemical sensing applications. This paves the way for the sustainable recycling of e-waste and a cost-effective approach for the development of electrodes. Here, the discarded LCD was modified with Ti 3 C 2 T x MXene and was used as a sensing platform for the detection of dopamine (DA). Cyclic voltammetry studies revealed that the Ti 3 C 2 T x -modified LCD shows a better enhancement in the sensor response compared with the bare LCD. The developed sensor was able to detect DA from 10 nM to 100 μM with a limit of detection of about 4.5 nM. Additionally, the sensor also shows very high selectivity, stability, and repeatability towards the detection of DA. The practical applicability of the sensor is also evaluated by detecting DA form human serum samples. We have tested with different LCD panels from different manufacturers and found that all the used LCDs are able to detect DA with minor changes in the current response. To the best of our knowledge, the possibility of using scrap LCD screens for electrochemical sensing applications has not been reported to date.Using discarded e-waste materials as electrodes for electrochemical sensing applications will be both a sustainable and cost-effective approach. Additionally, the current innovation provides an economical solution for managing or reducing the increasing amount of e-waste generated in the environment. Hence, reusing the disposed LCDs as electrodes in electrochemical sensing applications will open up new avenues toward cost-effective and sustainable methods for upcycling hazardous e-waste.

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Recovery of precious metals from industrial wastewater towards resource recovery and environmental sustainability: A critical review

Cited by 95 publications

References 297 publications

Recovery of Metals from Wastewater—State-of-the-Art Solutions with the Support of Membrane Technology

Recovery of Metals from Wastewater—State-of-the-Art Solutions with the Support of Membrane Technology

Material Design Strategies for Recovery of Critical Resources from Water

Conversion of Electronic Waste to an Electrochemical Sensor for Dopamine: Using MXene-Modified Liquid Crystal Display Panels

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