Advances in bio/chemical approaches for sustainable recycling and recovery of rare earth elements from secondary resources

Danouche, M.; Bounaga, A.; Oulkhir, A.; Boulif, R.; Zeroual, Y.; Benhida, R.; Lyamlouli, K.

doi:10.1016/j.scitotenv.2023.168811

Cited by 14 publications

(17 citation statements)

References 140 publications

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“…Traditional extraction methods often involve the use of harsh chemicals and can have significant environmental impacts. Bio-recovery, on the other hand, harnesses the metabolic capabilities of microorganisms to selectively leach and recover REEs (Danouche et al 2024 ). Microorganisms active in bioleaching can be both autotrophic and heterotrophic.…”

Section: Bio-recovery Of Reesmentioning

confidence: 99%

Microbial recovery of rare earth elements from various waste sources: a mini review with emphasis on microalgae

Vítová,

Mezricky

2024

World J Microbiol Biotechnol

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Rare Earth Elements (REEs) are indispensable in contemporary technologies, influencing various aspects of our daily lives and environmental solutions. The escalating demand for REEs has led to increased exploitation, resulting in the generation of diverse REE-bearing solid and liquid wastes. Recognizing the potential of these wastes as secondary sources of REEs, researchers are exploring microbial solutions for their recovery. This mini review provides insights into the utilization of microorganisms, with a particular focus on microalgae, for recovering REEs from sources such as ores, electronic waste, and industrial effluents. The review outlines the principles and distinctions of bioleaching, biosorption, and bioaccumulation, offering a comparative analysis of their potential and limitations. Specific examples of microorganisms demonstrating efficacy in REE recovery are highlighted, accompanied by successful methods, including advanced techniques for enhancing microbial strains to achieve higher REE recovery. Moreover, the review explores the environmental implications of bio-recovery, discussing the potential of these methods to mitigate REE pollution. By emphasizing microalgae as promising biotechnological candidates for REE recovery, this mini review not only presents current advances but also illuminates prospects in sustainable REE resource management and environmental remediation.

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Section: Bio-recovery Of Reesmentioning

confidence: 99%

Microbial recovery of rare earth elements from various waste sources: a mini review with emphasis on microalgae

Vítová,

Mezricky

2024

World J Microbiol Biotechnol

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“…REE-bearing minerals are geographically unevenly distributed worldwide, with the majority of production originating from China (Figure 2), that possesses reserves of monazite. Monazite deposits are also found in several other countries such as Australia, South Africa, Brazil, Malaysia, India, and Russia [46]. Markets and Markets predicts the REEs market growth USD 9.6 billion by 2026 [47], with a 12.3% CAGR from 2021 to 2026.…”

Section: Figurementioning

confidence: 99%

Review of Methods for Obtaining Rare Earth Elements from Recycling and Their Impact on the Environment and Human Health

Gkika,

Chalaris,

Kyzas

2024

Processes

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Rare earth elements (REEs) are at the forefront of discussions, given their crucial role in cutting-edge and eco-friendly innovations that propel the industrial revolution towards a green economy. These elements have become indispensable to various modern technologies, such as smartphones, electronic devices, and renewable energy sources. Many different concepts and analyses have been introduced, such as the chemical similarities among REEs, health risks and ecological damages, the negative environmental impacts of current recovery processes, and strategies for advancing REE recovery towards a circular economy. Although these elements have been widely used in various applications over the last 20 years, the literature on these aspects is fragmented and spread across different research areas, shared by multiple branches and application fields. These fields include safety concerns, economic challenges, and technology. Summarizing and classifying this literature is challenging due to its fragmented nature, the variety of topics, and the different approaches used. The quest for cleaner recycling strategies necessitates a comprehensive assessment covering economic, technological, and environmental aspects. The primary goal of this review is to provide a holistic perspective on REEs, with a central focus on their economic, technological, and environmental dimensions, particularly emphasizing reuse, recycling, and occupational safety. The review begins by addressing complexities of REEs, highlighting the associated technologies, environmental concerns, and economic considerations. It further explores the aspects of reuse and recycling of REEs, shedding light on the advantages, drawbacks, hazards, and costs associated with recycling technologies for REE recovery. Additionally, the review summarizes occupational exposure and safety considerations related to REEs.

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“…), and biosorbents (cellulose-based adsorbents, chitosan-based adsorbents, etc.) [ 6 , 7 , 8 , 9 , 10 , 11 ]. Most of these adsorbents are designed to separate only REEs or REEs from other impurities such as Fe or Al.…”

Section: Introductionmentioning

confidence: 99%

Separation of Adjacent Light Rare Earth Elements Using Silica Gel Modified with Diglycolamic Acid

Ogata,

Narita

2024

Materials

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The separation of adjacent rare earth elements (REEs) is a challenging issue due to their chemical similarity. We have investigated the separation of adjacent REEs using four types of adsorbents consisting of silica gel modified with diglycolamic acid with different functional groups at the amide position. For all the adsorbents, the adsorption ratio of REEs increased with the increase in atomic number from La to Sm and then became constant for heavy REEs. Among them, EDASiDGA, an adsorbent containing secondary and tertiary amides, showed a high separation factor for Nd/Pr of 2.8. The EDASiDGA-packed column was tested for individual recovery of Pr, Nd, and Sm. After the adsorption of these REEs from 0.10 M HCl, desorption tests were performed with 0.32 and 1.0 M HCl. As a result, Pr and Nd were eluted separately with 0.32 M HCl, and Sm was recovered with 1.0 M HCl. Since the EDASiDGA-packed column showed excellent separation of Pr/Nd/Sm without any chelating agent, it is promising for practical use.

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Advances in bio/chemical approaches for sustainable recycling and recovery of rare earth elements from secondary resources

Cited by 14 publications

References 140 publications

Microbial recovery of rare earth elements from various waste sources: a mini review with emphasis on microalgae

Microbial recovery of rare earth elements from various waste sources: a mini review with emphasis on microalgae

Review of Methods for Obtaining Rare Earth Elements from Recycling and Their Impact on the Environment and Human Health

Separation of Adjacent Light Rare Earth Elements Using Silica Gel Modified with Diglycolamic Acid

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