The mining sector generates massive quantities of mine tailings in response to the ever-growing d... more The mining sector generates massive quantities of mine tailings in response to the ever-growing demand for mineral products. Mine tailings (MTs) pose a major environmental problem because of the challenges associated with their management and storage. Depending on the type of ore extracted and the processing techniques employed, there is a possibility of extracting valuable components from these tailings, such as rare earth elements (REEs). However, optimal utilization of MTs should focus on repurposing all components of the waste, not just the economically valuable ones. This review offers insights into MT types, characterization, and environmental impacts. It evaluates hydrometallurgical and bio-hydrometallurgical routes as promising technologies for the recovery of REEs from tailings and highlights mechanical activation's potential as a pretreatment for enhanced REE extraction. This study explores reuse options for post-extraction MT residues, including construction materials via geopolymerization. The goal of this review is to present current best practices that enable the mining industry to fully recycle both valuable and residual components of MTs. An integrated approach combining reprocessing technologies with reuse applications can transform MTs into circular economy resources.
Journal of Material Cycles and Waste Management, 2024
The increasing amount of electronic waste (e-waste) has placed significant burdens on society and... more The increasing amount of electronic waste (e-waste) has placed significant burdens on society and the environment, particularly with regards to waste printed circuit boards (WPCBs), which are essential in electronics manufacturing. As natural resources become scarce, it is crucial to effectively recycle and reclaim WPCBs due to their high value and large output. Comminuting printed circuit boards is a crucial step in enabling the recovery of valuable materials, and this review provides an in-depth analysis of WPCB comminution. It explores the structure, types, and composition of the WPCBs, including their mechanical properties. The review thoroughly surveys conventional mechanical comminution machinery and also discusses emerging technologies such as innovative pretreatment approaches, electrodynamic disintegration, high voltage electrical pulses, and abrasive waterjet cutting. The literature has been critically examined to identify research gaps and inconsistencies, and future directions for increased efficiency and sustainability are proposed.
Journal of Material Cycles and Waste Management, 2024
The increasing amount of electronic waste (e-waste) has placed significant burdens on society and... more The increasing amount of electronic waste (e-waste) has placed significant burdens on society and the environment, particularly with regards to waste printed circuit boards (WPCBs), which are essential in electronics manufacturing. As natural resources become scarce, it is crucial to effectively recycle and reclaim WPCBs due to their high value and large output. Comminuting printed circuit boards is a crucial step in enabling the recovery of valuable materials, and this review provides an in-depth analysis of WPCB comminution. It explores the structure, types, and composition of the WPCBs, including their mechanical properties. The review thoroughly surveys conventional mechanical comminution machinery and also discusses emerging technologies such as innovative pretreatment approaches, electrodynamic disintegration, high voltage electrical pulses, and abrasive waterjet cutting. The literature has been critically examined to identify research gaps and inconsistencies, and future directions for increased efficiency and sustainability are proposed.
A study was carried out in the framework of international R&D Project to determine the effect of ... more A study was carried out in the framework of international R&D Project to determine the effect of water quality changes due to mine backfilling on talc flotation performance. The influence of two types of cemented paste backfill (Shotcrete and backfill) on flotation process water was investigated using the indoor soaking method, and the water quality was evaluated through water chemistry analysis, in addition to measuring pH, conductivity, and zeta potential as a function of soaking time. At the same time, talc batch flotation tests were performed using a KHD Humboldt Wedag lab cell for a period of 20 minutes. Soaking water at different soaking times was used as a process water for flotation, and tap water was also used to establish a reference response. Based upon the experimental results from the talc flotation and the several water quality parameters measured in the soaking water, conclusions were drawn.
The mining sector generates massive quantities of mine tailings in response to the ever-growing d... more The mining sector generates massive quantities of mine tailings in response to the ever-growing demand for mineral products. Mine tailings (MTs) pose a major environmental problem because of the challenges associated with their management and storage. Depending on the type of ore extracted and the processing techniques employed, there is a possibility of extracting valuable components from these tailings, such as rare earth elements (REEs). However, optimal utilization of MTs should focus on repurposing all components of the waste, not just the economically valuable ones. This review offers insights into MT types, characterization, and environmental impacts. It evaluates hydrometallurgical and bio-hydrometallurgical routes as promising technologies for the recovery of REEs from tailings and highlights mechanical activation's potential as a pretreatment for enhanced REE extraction. This study explores reuse options for post-extraction MT residues, including construction materials via geopolymerization. The goal of this review is to present current best practices that enable the mining industry to fully recycle both valuable and residual components of MTs. An integrated approach combining reprocessing technologies with reuse applications can transform MTs into circular economy resources.
Journal of Material Cycles and Waste Management, 2024
The increasing amount of electronic waste (e-waste) has placed significant burdens on society and... more The increasing amount of electronic waste (e-waste) has placed significant burdens on society and the environment, particularly with regards to waste printed circuit boards (WPCBs), which are essential in electronics manufacturing. As natural resources become scarce, it is crucial to effectively recycle and reclaim WPCBs due to their high value and large output. Comminuting printed circuit boards is a crucial step in enabling the recovery of valuable materials, and this review provides an in-depth analysis of WPCB comminution. It explores the structure, types, and composition of the WPCBs, including their mechanical properties. The review thoroughly surveys conventional mechanical comminution machinery and also discusses emerging technologies such as innovative pretreatment approaches, electrodynamic disintegration, high voltage electrical pulses, and abrasive waterjet cutting. The literature has been critically examined to identify research gaps and inconsistencies, and future directions for increased efficiency and sustainability are proposed.
Journal of Material Cycles and Waste Management, 2024
The increasing amount of electronic waste (e-waste) has placed significant burdens on society and... more The increasing amount of electronic waste (e-waste) has placed significant burdens on society and the environment, particularly with regards to waste printed circuit boards (WPCBs), which are essential in electronics manufacturing. As natural resources become scarce, it is crucial to effectively recycle and reclaim WPCBs due to their high value and large output. Comminuting printed circuit boards is a crucial step in enabling the recovery of valuable materials, and this review provides an in-depth analysis of WPCB comminution. It explores the structure, types, and composition of the WPCBs, including their mechanical properties. The review thoroughly surveys conventional mechanical comminution machinery and also discusses emerging technologies such as innovative pretreatment approaches, electrodynamic disintegration, high voltage electrical pulses, and abrasive waterjet cutting. The literature has been critically examined to identify research gaps and inconsistencies, and future directions for increased efficiency and sustainability are proposed.
A study was carried out in the framework of international R&D Project to determine the effect of ... more A study was carried out in the framework of international R&D Project to determine the effect of water quality changes due to mine backfilling on talc flotation performance. The influence of two types of cemented paste backfill (Shotcrete and backfill) on flotation process water was investigated using the indoor soaking method, and the water quality was evaluated through water chemistry analysis, in addition to measuring pH, conductivity, and zeta potential as a function of soaking time. At the same time, talc batch flotation tests were performed using a KHD Humboldt Wedag lab cell for a period of 20 minutes. Soaking water at different soaking times was used as a process water for flotation, and tap water was also used to establish a reference response. Based upon the experimental results from the talc flotation and the several water quality parameters measured in the soaking water, conclusions were drawn.
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Papers by Alaa Abbadi