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Danouche M, Bounaga A, Oulkhir A, Boulif R, Zeroual Y, Benhida R, Lyamlouli K. Advances in bio/chemical approaches for sustainable recycling and recovery of rare earth elements from secondary resources. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:168811. [PMID: 38030017 DOI: 10.1016/j.scitotenv.2023.168811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 10/30/2023] [Accepted: 11/21/2023] [Indexed: 12/01/2023]
Abstract
Rare Earth Elements (REEs) are indispensable in the growing smart technologies, such as smart phones and electronic devices, renewable energy, new generation of hybrid cars, etc. These elements are naturally occurring in specific geological deposits (bastnäsite, monazite, and xenotime), primarily concentrated in the regions of China, Australia, and the USA. The extraction and processing of REEs and the mismanagement of secondary REE resources, such as industrial waste, end-of-life materials, and mining by-products, raise major environmental and health concerns. Recycling represents a convincing solution, avoiding the necessity to separate low-value or coexisting radioactive elements when REEs are recovered from raw ore. Despite these advantages, only 1 % of REEs are usually recycled. This review overreached strategies for recycling REEs from secondary resources, emphasizing their pivotal role. The predominant approach for recycling REEs involves hydrometallurgical processing by leaching REEs from their origins using acidic solutions and then separating them from dissolved impurities using techniques like liquid-liquid extraction, membrane separation, chromatography, adsorption, flotation, and electrochemical methods. However, these methods have notable disadvantages, particularly their over requirements for water, reagents, and energy. Biohydrometallurgy introduces an innovative alternative using microorganisms and their metabolites to extract REEs through bioleaching. Other investigations are carried out to recover REEs through biological strategies, including biosorption, affinity chromatography with biological ligands, bioflotation employing biological surfactants, and bioelectrochemical methods. However, biohydrometallurgical processes can also be relatively slow and less suitable for large-scale applications, often lacking specificity for targeted REEs recovery. Overcoming these challenges necessitates ongoing research and development efforts to advance recycling technologies.
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Affiliation(s)
- M Danouche
- Department of Chemical & Biochemical Sciences-Green Process Engineering (CBS), Mohammed VI Polytechnic University (UM6P), Ben Guerir 43150, Morocco
| | - A Bounaga
- Department of Chemical & Biochemical Sciences-Green Process Engineering (CBS), Mohammed VI Polytechnic University (UM6P), Ben Guerir 43150, Morocco
| | - A Oulkhir
- Department of Chemical & Biochemical Sciences-Green Process Engineering (CBS), Mohammed VI Polytechnic University (UM6P), Ben Guerir 43150, Morocco; Institute of Chemistry, Nice UMR7272, Côte d'Azur University, French National Centre for Scientific Research (CNRS), Nice, France
| | - R Boulif
- Department of Chemical & Biochemical Sciences-Green Process Engineering (CBS), Mohammed VI Polytechnic University (UM6P), Ben Guerir 43150, Morocco
| | - Y Zeroual
- Situation Innovation, OCP Group BP 118, Jorf Lasfar, El Jadida 24000, Morocco
| | - R Benhida
- Department of Chemical & Biochemical Sciences-Green Process Engineering (CBS), Mohammed VI Polytechnic University (UM6P), Ben Guerir 43150, Morocco; Institute of Chemistry, Nice UMR7272, Côte d'Azur University, French National Centre for Scientific Research (CNRS), Nice, France.
| | - K Lyamlouli
- College of Sustainable Agriculture and Environmental Sciences, AgroBioScience Department, Mohammed VI Polytechnic University (UM6P), Ben Guerir 43150, Morocco
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Zhang M, Huang C, Ni J, Yue S. Global trends and future prospects of acid mine drainage research. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:109233-109249. [PMID: 37770736 DOI: 10.1007/s11356-023-30059-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 09/20/2023] [Indexed: 09/30/2023]
Abstract
The uncontrolled release of acid mine drainage (AMD) results in the ongoing deterioration of groundwater and surface water, along with harmful impacts on aquatic ecosystems and surrounding habitats. This study employed a bibliometric analysis to examine research activities and trends related to AMD from 1991 to 2021. The analysis demonstrated a consistent growth in AMD research over the years, with a notable surge in the number of publications starting from 2014. Applied Geochemistry and Science of the Total Environment emerged as the top two extensively published journals in the field of AMD research. The USA held a prominent position, achieving the highest h-index (96) and central value (0.36) among 111 countries/territories, with China and Spain following closely behind. The author keyword analysis provides an overview of the main focuses in AMD research. Furthermore, the co-citation reference analysis reveals four primary domains of AMD research. Moreover, the prevention and remediation of AMD, including source prevention and migration control, as well as the hazards posed by heavy metals/metalloids and the mechanisms and techniques employed for their removal, are discussed in detail.
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Affiliation(s)
- Min Zhang
- Jiangxi Copper Technology Research Institute, Jiangxi Copper Corporation, Nanchang, 330096, Jiangxi Province, China
| | - Chang Huang
- Jiangxi Copper Technology Research Institute, Jiangxi Copper Corporation, Nanchang, 330096, Jiangxi Province, China
| | - Jin Ni
- Jiangxi Copper Technology Research Institute, Jiangxi Copper Corporation, Nanchang, 330096, Jiangxi Province, China
| | - Siyuan Yue
- Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang, 330096, Jiangxi Province, China.
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Censi P, Sirota I, Zuddas P, Lensky NG, Crouvi O, Cangemi M, Piazzese D. Rare earths release from dissolving atmospheric dust and their accumulation into crystallising halite: The Dead Sea example. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 875:162682. [PMID: 36894097 DOI: 10.1016/j.scitotenv.2023.162682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 03/01/2023] [Accepted: 03/02/2023] [Indexed: 06/18/2023]
Abstract
The industrial extraction of Y and lanthanides (hereafter defined as Rare Earth Elements, REE) often requires the achievement of leaching procedures removing these metals from primary rocks and their transfer in aqueous leachates or incorporated in newly forming soluble solids. These procedures are the most dangerous to the environment in relation to the composition of leachates. Hence, the recognition of natural settings where these processes currently occur, represents a worthy challenge for learning how to carry out similar industrial procedures under natural and more eco-friendly conditions. Accordingly, the REE distribution was studied in the brine of Dead Sea, a terminal evaporating basin where brines dissolve atmospheric fallout particles and crystallise halite. Our results indicate that the shale-like fractionation of shale-normalised REE patterns in brines, inherited during the dissolution of atmospheric fallout, changes because of the halite crystallisation. This process leads to crystallising halite mainly enriched in elements from Sm to Ho (medium REE, MREE) and coexisting mother brines enriched in La and some other light REE (LREE). We suggest that the dissolution of atmospheric dust in brines corresponds to the REE extraction from primary silicate rocks, whereas halite crystallisation represents the REE transfer into a secondary more soluble deposit with reduced environmental health outcomes.
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Affiliation(s)
- P Censi
- Department of Earth and Marine Science (DISTEM), University of Palermo, Via Archirafi 36, 90123 Palermo, Italy.
| | - I Sirota
- Geological Survey of Israel, 32 Yesha'yahu Leibowitz, Jerusalem 9371234, Israel; Institute of Earth Sciences, Edmond J. Safra Campus, The Hebrew University of Jerusalem, Givat Ram, Jerusalem 91904, Israel
| | - P Zuddas
- Sorbonne Université, CNRS, METIS, F75005 Paris, France
| | - N G Lensky
- Geological Survey of Israel, 32 Yesha'yahu Leibowitz, Jerusalem 9371234, Israel; Institute of Earth Sciences, Edmond J. Safra Campus, The Hebrew University of Jerusalem, Givat Ram, Jerusalem 91904, Israel
| | - O Crouvi
- Geological Survey of Israel, 32 Yesha'yahu Leibowitz, Jerusalem 9371234, Israel
| | - M Cangemi
- Department of Earth and Marine Science (DISTEM), University of Palermo, Via Archirafi 36, 90123 Palermo, Italy
| | - D Piazzese
- Department of Earth and Marine Science (DISTEM), University of Palermo, Via Archirafi 36, 90123 Palermo, Italy
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Masindi V, Shabalala A, Foteinis S. Passive co-treatment of phosphorus-depleted municipal wastewater with acid mine drainage: Towards sustainable wastewater management systems. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 324:116399. [PMID: 36206654 DOI: 10.1016/j.jenvman.2022.116399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Revised: 09/14/2022] [Accepted: 09/26/2022] [Indexed: 06/16/2023]
Abstract
Industrial processes typically produce large wastewater volumes, which, if left untreated, greatly affect receiving ecosystems. However, wastewater treatment can be costly and energy-intensive, with the developing world particularly struggling with wastewater management. As such, simple and cost-effective solutions are urgently required with the passive (no energy or reagents) co-treatment of different wastewater matrices holding great promise. Here, wastewater from a phosphorus recovery system (chemical precipitation) was co-treated with acid mine drainage (AMD). Specifically, phosphorus-rich municipal wastewater was treated with hydrated lime, as to synthesize a wastewater-derived phosphorus product, i.e., calcium phosphate (Ca3(PO4)2), also producing a phosphorous-depleted alkaline effluent. The feasibility of valorising this effluent is examined here by using it for the passive co-treatment of real AMD. Different liquid-to-liquid (v/v) ratios were considered, with the optimum ratio (AMD to phosphate-depleted wastewater) being 1:9. The pH of the co-treated effluent was adjusted to 8.4 (from an initial value of 11.5 in the phosphorus-depleted wastewater and 2.2 in AMD), while metals (∼100% reduction of Fe, Mn, Ni, Cu, Pb, ≥99.5 for Al, Zn, and Mg, 80% for Cr, and 75% for As) and sulphate (89.26% reduction) contained in AMD were greatly removed. This was also the case for the remaining orthophosphate that was contained in the phosphorus-depleted wastewater (93.75% reduction). The electrical conductivity was also reduced in both the AMD (88.75%) and the phosphorus-depleted wastewater (69.21%), suggesting the removal of contaminants from both matrices. Results were underpinned by state-of-the-art analytical techniques, including FE-SEM/FIB/EDX, FTIR, and XRD, along with geochemical modelling (PHREEQC). Contaminants were removed through complexation, (co)adsorption, crystallization, and (co)precipitation. Overall, results suggest that the co-treatment of these wastewater matrices is feasible and could be directly scaled up (e.g., using waste stabilization ponds), while opportunities for the beneficiation of the produced sludge and for water reclamation (e.g., through membrane filtration) could also arise, further promoting the sustainably of this passive co-treatment method.
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Affiliation(s)
- V Masindi
- Magalies Water, Scientific Services, Research & Development Division, Erf 3475, Stoffberg Street, Brits, 0250, United Kingdom; Department of Environmental Sciences, College of Agriculture and Environmental Sciences, University of South Africa (UNISA), P. O. Box 392, Florida, 1710, South Africa.
| | - A Shabalala
- School of Biology and Environmental Sciences, University of Mpumalanga, Mbombela, Mpumalanga, 1200, South Africa
| | - S Foteinis
- Research Centre for Carbon Solutions, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, United Kingdom.
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Nguyen TT, Nguyen TP, Tran LN, Huynh TTT, Nguyen NH, Nguyen LHT, Le TTM, Doan TLH, Nguyen MA, Tran PH. DABCOnium Ionic Liquid‐Immobilized Silica Gel for Solid Phase Extraction of Phenoxyacetic Acid Herbicides in Water Samples**. ChemistrySelect 2022. [DOI: 10.1002/slct.202203526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- The Thai Nguyen
- Department of Organic Chemistry Faculty of Chemistry University of Science Ho Chi Minh City Vietnam
- Vietnam National University Ho Chi Minh City Vietnam
| | - Thinh Phuc Nguyen
- Department of Analytical Chemistry Faculty of Chemistry University of Science Ho Chi Minh City Vietnam
- Vietnam National University Ho Chi Minh City Vietnam
| | - Long Nam Tran
- Department of Analytical Chemistry Faculty of Chemistry University of Science Ho Chi Minh City Vietnam
- Vietnam National University Ho Chi Minh City Vietnam
| | - Tam Thanh Thi Huynh
- Department of Organic Chemistry Faculty of Chemistry University of Science Ho Chi Minh City Vietnam
- Vietnam National University Ho Chi Minh City Vietnam
| | - Nhi Hoang Nguyen
- Department of Organic Chemistry Faculty of Chemistry University of Science Ho Chi Minh City Vietnam
- Vietnam National University Ho Chi Minh City Vietnam
| | - Linh Ho Thuy Nguyen
- Department of Analytical Chemistry Faculty of Chemistry University of Science Ho Chi Minh City Vietnam
- Center for Innovative Materials and Architectures (INOMAR) Ho Chi Minh City Vietnam
| | - Tien Thi My Le
- Department of Analytical Chemistry Faculty of Chemistry University of Science Ho Chi Minh City Vietnam
- Center for Innovative Materials and Architectures (INOMAR) Ho Chi Minh City Vietnam
| | - Tan Le Hoang Doan
- Department of Analytical Chemistry Faculty of Chemistry University of Science Ho Chi Minh City Vietnam
- Center for Innovative Materials and Architectures (INOMAR) Ho Chi Minh City Vietnam
| | - Mai Anh Nguyen
- Department of Analytical Chemistry Faculty of Chemistry University of Science Ho Chi Minh City Vietnam
- Vietnam National University Ho Chi Minh City Vietnam
| | - Phuong Hoang Tran
- Department of Organic Chemistry Faculty of Chemistry University of Science Ho Chi Minh City Vietnam
- Vietnam National University Ho Chi Minh City Vietnam
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Al-Amrani WA, Hanafiah MAKM, Mohammed AHA. A comprehensive review of anionic azo dyes adsorption on surface-functionalised silicas. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:76565-76610. [PMID: 36166120 DOI: 10.1007/s11356-022-23062-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 09/13/2022] [Indexed: 06/16/2023]
Abstract
Surface -functionalised silica networks are advanced adsorbents. They have been given much attention for treating wastewater using the adsorption technique due to the silanol reactivity, resulting in strong binding affinities towards many pollutants. This review discusses the removal of anionic azo dyes utilising various functional groups such as amines, surfactants, polymers, macrocyclic, and other chelating groups functionalised on silica's surface. This review also reveals the steadily increasing interest in surface-functionalised silicas as adsorbents, emphasising the scholarly advancements in this field as a platform for future research. For that, adsorption capacities with different experimental conditions have been compared. The possible adsorption mechanisms, rate-limiting step, and factors affecting the anionic azo dye adsorption process have been comprehensively discussed. This review discloses that adsorbent characteristics such as porosity and functional groups, besides structural properties of an anionic azo dye, significantly affect adsorption. The adsorption process followed the Langmuir isotherm and pseudo-second-order models, with a predominantly spontaneous and endothermic nature. Multiple interactions, including electrostatic interaction, π-π interactions, and hydrogen bonding, are observed between dyes and functionalised silicas, indicating the adsorption process's complexity. Regeneration and cost-economic analysis are also presented to provide a roadmap for sustainable improvements. Chemical and biological regeneration techniques restore > 80% of the spent functionalised silicas. There is a significant opportunity to improve their efficiencies and regenerability, resulting in surface-functionalised silicas being used commercially instead of only in the laboratory. Finally, future research has been proposed by identifying current research gaps, particularly concerning the application of functionalised silicas in wastewater treatment.
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Xu S, Liu H, Long A, Feng S, Chen CP. In-situ synthesis of carbon dots embedded wrinkled-mesoporous silica microspheres for efficiently capturing and monitoring organochlorine pesticides from water and fruit juice. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Higgins RF, Ruoff KP, Kumar A, Schelter EJ. Coordination Chemistry-Driven Approaches to Rare Earth Element Separations. Acc Chem Res 2022; 55:2616-2627. [PMID: 36041177 DOI: 10.1021/acs.accounts.2c00312] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Current projections for global mining indicate that unsustainable practices will cause supply problems for many elements, called critical raw materials, in the next 20 years. These include elements necessary for renewable technologies as well as artisanal sources. Energy critical elements (ECEs) comprise a group used for clean, renewable energy applications that are in low abundance in the Earth's crust or require an economic premium to extract from ores. Sustainable practices of acquiring ECEs is an important problem to address through fundamental research to provide alternative energy technologies such as wind turbines and electric vehicles at cheaper costs for our global energy generation and usage. Some of these green technologies incorporate rare-earth (RE) metals (Sc, Y and the lanthanides), which are challenging to separate from mineral sources because of their similar sizes (i.e., ionic radii) and chemical properties. The current process used to provide REs at requisite purities for these applications is counter-current solvent-solvent extraction, which is scalable and works efficiently for any ore composition. However, this method produces large amounts of caustic waste that is environmentally damaging, especially to areas in China that house major separation facilities. Advancement of the selectivity of this process is challenging since exact molecular speciation that affords separations is still relatively unknown. In this context, we developed a program to investigate new RE separations systems that were aimed at minimizing solvent use, controlled by molecular speciation, and could be targeted at problems in recycling these critical metals.The first ligand system that was developed to impart solubility differences between light and heavy rare-earth ions was [{(2-tBuNO)C6H4CH2}3N]3- (TriNOx3-) (graphic below). A differential solubility allowed for a separation of Nd and Dy of SFNd:Dy = ∼300 in a single step. In other words, a 50:50 Nd/Dy sample was enriched to give 95% pure Nd and Dy through a simple filtration, which is potentially impactful to recycling magnetic materials found in wind turbines. This separations system compares favorably to other state-of-the-art molecular extractants that are based on energetic differences of the thermodynamic parameter to affect separations for neighboring elements. This straightforward, thermodynamically driven method to separate REs primed our future research for new coordination chemistry approaches to separations.Another separations system was accomplished through the variable rate of a redox event from one arm of the TriNOx3- ligand. It was determined that the rate of this one electron oxidation, which operated through an electrochemical-chemical-electrochemical mechanism, was dependent on the identity of the RE ion. This kinetically driven separation afforded a separation factor (SF) of SFEu:Y = 75. We have also described other transformations such as ligand exchange, substituent dependent, and redox-driven chelation processes with well-defined speciation to afford purified RE materials. Recently, we determined that magnetic properties can be used to enhance both thermodynamic and kinetic RE separations processes to give an approximately 100% boost for pairs of paramagnetic/diamagnetic REs. These results have shown that both thermodynamic and kinetic RE separations were efficient for different selected RE binary pairs through coordination chemistry. The focus of this Account will detail the differences that are observed for RE separations when promoted by thermodynamic or kinetic factors. Overall, the development of rationally adjusted speciation of REs provides a basis for future industrial separations processes for technologies applied to ECEs derived from wind turbines, batteries for electric vehicles, and LEDs.
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Affiliation(s)
- Robert F Higgins
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 S. 34th St., Philadelphia, Pennsylvania 19104, United States
| | - Kevin P Ruoff
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 S. 34th St., Philadelphia, Pennsylvania 19104, United States
| | - Amit Kumar
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 S. 34th St., Philadelphia, Pennsylvania 19104, United States
| | - Eric J Schelter
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 S. 34th St., Philadelphia, Pennsylvania 19104, United States
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Balderas K, Taylor CL, Kang J. Comment on "The potential use of ultrasound-assisted bleaching in removing heavy metals and pigments from soybean oil using kinetic, thermodynamic and equilibrium modeling". ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:41863-41865. [PMID: 35314934 DOI: 10.1007/s11356-022-19844-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 03/17/2022] [Indexed: 06/14/2023]
Affiliation(s)
- Karen Balderas
- Department of Biology, Valdosta State University, Valdosta, GA, 31698, USA
| | - Caden L Taylor
- Department of Biology, Valdosta State University, Valdosta, GA, 31698, USA
| | - Jonghoon Kang
- Department of Biology, Valdosta State University, Valdosta, GA, 31698, USA.
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