1
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Malcomson T, Edwards-Yates L, Kerridge A. Tailoring the pore size of expanded porphyrinoids for lanthanide selectivity. RSC Adv 2023; 13:28426-28433. [PMID: 37771918 PMCID: PMC10523133 DOI: 10.1039/d3ra05710k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 09/15/2023] [Indexed: 09/30/2023] Open
Abstract
Despite increase in demand, capacity for the recycling of rare earth elements remains limited, partly due to the inefficiencies with processes currently utilised in the separation of lanthanides. This study highlights the potential use of expanded porphyrinoids in lanthanide separation through selective binding, dependent on the tailored pore size of the macrocycle. Each emerging trend is subjected to multi-factored analysis to decompose the underlying source. Results promote the viability of size-based separation with preferential binding of larger lanthanum(iii) ions to amethyrin and isoamethyrin macrocycles, while smaller macrocycles such as pentaphyrin(0.0.0.0.0) present a preferential binding of lutetium(iii) ions. Additionally, the porphyrin(2.2.2.2) macrocycle shows a selectivity for gadolinium(iii) ions over both larger and smaller ions. An upper limit of applicable pore size is shown to be ≈2.8 Å, beyond which the formed complexes are predicted to be less stable than the corresponding nitrate complexes.
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Affiliation(s)
- Thomas Malcomson
- Department of Chemistry, School of Natural Sciences, University of Manchester Oxford Road Manchester M13 9PL UK
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2
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Miller DM, Abels K, Guo J, Williams KS, Liu MJ, Tarpeh WA. Electrochemical Wastewater Refining: A Vision for Circular Chemical Manufacturing. J Am Chem Soc 2023; 145:19422-19439. [PMID: 37642501 DOI: 10.1021/jacs.3c01142] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
Wastewater is an underleveraged resource; it contains pollutants that can be transformed into valuable high-purity products. Innovations in chemistry and chemical engineering will play critical roles in valorizing wastewater to remediate environmental pollution, provide equitable access to chemical resources and services, and secure critical materials from diminishing feedstock availability. This perspective envisions electrochemical wastewater refining─the use of electrochemical processes to tune and recover specific products from wastewaters─as the necessary framework to accelerate wastewater-based electrochemistry to widespread practice. We define and prescribe a use-informed approach that simultaneously serves specific wastewater-pollutant-product triads and uncovers a mechanistic understanding generalizable to broad use cases. We use this approach to evaluate research needs in specific case studies of electrocatalysis, stoichiometric electrochemical conversions, and electrochemical separations. Finally, we provide rationale and guidance for intentionally expanding the electrochemical wastewater refining product portfolio. Wastewater refining will require a coordinated effort from multiple expertise areas to meet the urgent need of extracting maximal value from complex, variable, diverse, and abundant wastewater resources.
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Affiliation(s)
- Dean M Miller
- Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States
| | - Kristen Abels
- Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States
| | - Jinyu Guo
- Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States
| | - Kindle S Williams
- Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States
| | - Matthew J Liu
- Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States
| | - William A Tarpeh
- Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States
- Department of Civil and Environmental Engineering, Stanford University, Stanford, California 94305, United States
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3
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Ye Q, Jin X, Zhu B, Gao H, Wei N. Lanmodulin-Functionalized Magnetic Nanoparticles as a Highly Selective Biosorbent for Recovery of Rare Earth Elements. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:4276-4285. [PMID: 36790366 DOI: 10.1021/acs.est.2c08971] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Recovering rare earth elements (REEs) from waste streams represents a sustainable approach to diversify REE supply while alleviating the environmental burden. However, it remains a critical challenge to selectively separate and concentrate REEs from low-grade waste streams. In this study, we developed a new type of biosorbent by immobilizing Lanmodulin-SpyCatcher (LanM-Spycatcher) on the surface of SpyTag-functionalized magnetic nanoparticles (MNPs) for selective separation and recovery of REEs from waste streams. The biosorbent, referred to as MNP-LanM, had an adsorption activity of 6.01 ± 0.11 μmol-terbium/g-sorbent and fast adsorption kinetics. The adsorbed REEs could be desorbed with >90% efficiency. The MNP-LanM selectively adsorbed REEs in the presence of a broad range of non-REEs. The protein storage stability of the MNP-LanM increased by two-fold compared to free LanM-SpyCatcher. The MNP-LanM could be efficiently separated using a magnet and reused with high stability as it retained ∼95% of the initial activity after eight adsorption-desorption cycles. Furthermore, the MNP-LanM selectively adsorbed and concentrated REEs from the leachate of coal fly ash and geothermal brine, resulting in 967-fold increase of REE purity. This study provides a scientific basis for developing innovative biosorptive materials for selective and efficient separation and recovery of REEs from low-grade feedstocks.
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Affiliation(s)
- Quanhui Ye
- Department of Civil and Environmental Engineering, 3221 Newmark Civil Engineering Laboratory, University of Illinois at Urbana-Champaign, 205 N. Mathews Avenue, Urbana, Illinois 61801, United States
| | - Xiuyu Jin
- Department of Civil and Environmental Engineering, 3221 Newmark Civil Engineering Laboratory, University of Illinois at Urbana-Champaign, 205 N. Mathews Avenue, Urbana, Illinois 61801, United States
| | - Baotong Zhu
- Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, 156 Fitzpatrick Hall, Notre Dame, Indiana 46556, United States
| | - Haifeng Gao
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Na Wei
- Department of Civil and Environmental Engineering, 3221 Newmark Civil Engineering Laboratory, University of Illinois at Urbana-Champaign, 205 N. Mathews Avenue, Urbana, Illinois 61801, United States
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4
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Cournoyer A, Bazinet L. Electrodialysis Processes an Answer to Industrial Sustainability: Toward the Concept of Eco-Circular Economy?-A Review. MEMBRANES 2023; 13:205. [PMID: 36837708 PMCID: PMC9962313 DOI: 10.3390/membranes13020205] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 01/25/2023] [Accepted: 01/28/2023] [Indexed: 06/18/2023]
Abstract
Wastewater and by-product treatments are substantial issues with consequences for our society, both in terms of environmental impacts and economic losses. With an overall global objective of sustainable development, it is essential to offer eco-efficient and circular solutions. Indeed, one of the major solutions to limit the use of new raw materials and the production of wastes is the transition toward a circular economy. Industries must find ways to close their production loops. Electrodialysis (ED) processes such as conventional ED, selective ED, ED with bipolar membranes, and ED with filtration membranes are processes that have demonstrated, in the past decades and recently, their potential and eco-efficiency. This review presents the most recent valorization opportunities among different industrial sectors (water, food, mining, chemistry, etc.) to manage waste or by-product resources through electrodialysis processes and to improve global industrial sustainability by moving toward circular processes. The limitations of existing studies are raised, especially concerning eco-efficiency. Indeed, electrodialysis processes can be optimized to decrease energy consumption and costs, and to increase efficiency; however, eco-efficiency scores should be determined to compare electrodialysis with conventional processes and support their advantages. The review shows the high potential of the different types of electrodialysis processes to treat wastewaters and liquid by-products in order to add value or to generate new raw materials. It also highlights the strong interest in using eco-efficient processes within a circular economy. The ideal scenario for sustainable development would be to make a transition toward an eco-circular economy.
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Affiliation(s)
| | - Laurent Bazinet
- Department of Food Sciences, Laboratoire de Transformation Alimentaire et Procédés ÉlectroMembranaires (LTAPEM, Laboratory of Food Processing and ElectroMembrane Processes), Institute of Nutrition and Functional Foods (INAF), Dairy Research Center (STELA), Université Laval, Quebec, QC G1V 0A6, Canada
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5
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Li R, Yan H, Wang H, Yan J, Jiang C, Wang Y, Xu T. Electrodialysis for the volume reduction of the simulated radionuclides containing seawater. JOURNAL OF HAZARDOUS MATERIALS 2022; 439:129601. [PMID: 35863228 DOI: 10.1016/j.jhazmat.2022.129601] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 07/11/2022] [Accepted: 07/12/2022] [Indexed: 06/15/2023]
Abstract
In this study, electrodialysis (ED) was performed to concentrate the radionuclides containing seawater for volume minimization. The concentration behaviors of the trace radioactive elements were also explored. Under the optimal voltage drop of 6 V and the volume ratio of 1:40, the concentration times of Cs+, Co2+, Sr2+ and I- could reach 9.9, 9.5, 20.1 and 32.5, respectively. Furthermore, it enabled over 80% volume reduction and over 90% removal of all hazardous radionuclides. Hence, ED is a feasible and promising method to manage the radioactive wastewater due to its high concentration and decontamination performances. For identical ion contents, the concentration rate for the cations presented the order of Na+ > Cs+ > Sr2+ > Co2+; the hydration radius and hydration free energy played the dominant roles in ion concentration. In contrast, for the ED concentration of trace radioactive elements, of which the contents are several magnitudes lower than the predominant salt concentration, the concentration rate presented the order of Sr2+ > Cs+ > Co2+ > Na+; the specific charge began to play an important role when the predominant ion approached its saturated salt concentration. For the anions, I- always migrated faster than Cl- at diverse concentrations.
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Affiliation(s)
- Ruirui Li
- Department of Applied Chemistry, Anhui Provincial Engineering Laboratory of Functional Membrane Science and Technology, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Haiyang Yan
- Department of Applied Chemistry, Anhui Provincial Engineering Laboratory of Functional Membrane Science and Technology, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Huangying Wang
- Department of Applied Chemistry, Anhui Provincial Engineering Laboratory of Functional Membrane Science and Technology, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Junying Yan
- Department of Applied Chemistry, Anhui Provincial Engineering Laboratory of Functional Membrane Science and Technology, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Chenxiao Jiang
- Department of Applied Chemistry, Anhui Provincial Engineering Laboratory of Functional Membrane Science and Technology, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Yaoming Wang
- Department of Applied Chemistry, Anhui Provincial Engineering Laboratory of Functional Membrane Science and Technology, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China.
| | - Tongwen Xu
- Department of Applied Chemistry, Anhui Provincial Engineering Laboratory of Functional Membrane Science and Technology, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China.
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6
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Sulfonated polymer coating enhances selective removal of calcium in membrane capacitive deionization. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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7
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Butylskii DY, Troitskiy VA, Skudarnova AS, Sharafan MV. Scaling on Surface of MA-41P Anion-Exchange Membrane in Concentration Chamber of Electrodialyzer during Processing Dilute Stratal Water Imitates. MEMBRANES AND MEMBRANE TECHNOLOGIES 2022. [DOI: 10.1134/s2517751622050031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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8
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Chen Z, Yuan J, Dong Y, Liu H, Liang F, Yang Z, Wang Y, Xu J. Efficient recovery and enrichment of rare earth elements by a continuous flow micro-extraction system. FUNDAMENTAL RESEARCH 2022; 2:588-594. [PMID: 38934003 PMCID: PMC11197687 DOI: 10.1016/j.fmre.2021.06.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 06/08/2021] [Accepted: 06/23/2021] [Indexed: 11/27/2022] Open
Abstract
The excessive exploitation of rare earth elements (REEs) has caused major losses of non-renewable resources and damage to the ecosystem. The processes of mining and smelting produce massive amounts of wastewater with low concentrations of REEs. Consequently, the enrichment and recovery of low-concentration REEs from wastewater has significant economic and environmental value. For this purpose, operation under large phase ratios (the flow rate ratio between the aqueous phase and extractant) is more desirable and economically viable. However, the traditional REE extraction process suffers from the uneven dispersion of the extractant and the difficulty of phase separation, which leads to long extraction times and large consumption of extractants. Hence, there is an urgent need to develop a green and efficient technique to extract low concentrations of REEs from wastewater. In this work, a droplet-based microfluidic technique was used to continuously extract and recover low-concentration REEs at large phase ratios. Snowman-shaped magnetic Janus nanoparticles were added to the continuous phase as emulsifiers to facilitate uniform extractant dispersion and rapid phase separation. Several key factors affecting the extraction efficiency, including pH, residence time, and the amount of added Janus nanoparticles, were systematically investigated. Compared to batch extraction, droplet-based microfluidic extraction with the addition of Janus nanoparticles showed the advantages of a large specific surface area and fast phase separation during extraction. Meanwhile, the Janus nanoparticles exhibited good emulsification performance after three extraction cycles. In summary, the Janus nanoparticle-stabilized droplet generated by microfluidic methods provides a feasible path for the efficient enrichment and recovery of low-concentration REEs.
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Affiliation(s)
- Zhuo Chen
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Jifang Yuan
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Yuhang Dong
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Haipeng Liu
- Department of Chemical Engineering and Key Laboratory of Advanced Materials of Ministry of Education, Tsinghua University, Beijing 100084, China
| | - Fuxin Liang
- Department of Chemical Engineering and Key Laboratory of Advanced Materials of Ministry of Education, Tsinghua University, Beijing 100084, China
| | - Zhenzhong Yang
- Department of Chemical Engineering and Key Laboratory of Advanced Materials of Ministry of Education, Tsinghua University, Beijing 100084, China
| | - Yundong Wang
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Jianhong Xu
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
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9
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Yuksekdag A, Kose-Mutlu B, Siddiqui AF, Wiesner MR, Koyuncu I. A holistic approach for the recovery of rare earth elements and scandium from secondary sources under a circular economy framework - A review. CHEMOSPHERE 2022; 293:133620. [PMID: 35033522 DOI: 10.1016/j.chemosphere.2022.133620] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 12/27/2021] [Accepted: 01/11/2022] [Indexed: 06/14/2023]
Abstract
Limited natural resources and a continuous increase in the demand for modern technological products, is creating a demand and supply gap for rare earth elements (REEs) and Sc. There is therefore a need to adopt the sustainable approach of the circular economy system (CE). In this review, we defined six steps required to close the loop and recover REEs, using a holistic approach. Recent statistics on REEs and Sc demand and the number of waste generations are reported and studies on more environmentally friendly, economic, and/or efficient recovery processes are summarized. Pilot-scale recovery facilities are described for several types of secondary sources. Finally, we identify obstacles to closing the REE loop in a circular economy and the reasons why secondary sources are not preferred over primary sources. Briefly, recovery from secondary sources should be environmentally and economically friendly and of an acceptable standard concerning final product quality. However, current technologies for recovery from for secondary sources are limiting and technology needs will vary depending on the source type. The quality/purity of the recovered metals should be proven so that they do not result in any adverse effects on the product quality, when they are being used as secondary raw material. In addition, for industrial-scale facilities, process improvements are required that consider environmental conditions.
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Affiliation(s)
- Ayse Yuksekdag
- National Research Center on Membrane Technologies, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey; Environmental Engineering Department, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey
| | - Borte Kose-Mutlu
- National Research Center on Membrane Technologies, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey; Molecular Biology and Genetics Department, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey.
| | - Azmat Fatima Siddiqui
- National Research Center on Membrane Technologies, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey; Environmental Engineering Department, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey
| | - Mark R Wiesner
- Civil and Environmental Engineering Department, Duke University, 27708, Durham, NC, USA
| | - Ismail Koyuncu
- National Research Center on Membrane Technologies, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey; Environmental Engineering Department, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey.
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10
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Vardanyan A, Guillon A, Budnyak T, Seisenbaeva GA. Tailoring Nanoadsorbent Surfaces: Separation of Rare Earths and Late Transition Metals in Recycling of Magnet Materials. NANOMATERIALS 2022; 12:nano12060974. [PMID: 35335787 PMCID: PMC8950031 DOI: 10.3390/nano12060974] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 03/09/2022] [Accepted: 03/14/2022] [Indexed: 12/29/2022]
Abstract
Novel silica-based adsorbents were synthesized by grafting the surface of SiO2 nanoparticles with amine and sulfur containing functional groups. Produced nanomaterials were characterized by SEM-EDS, AFM, FTIR, TGA and tested for adsorption and separation of Rare Earth Elements (REE) (Nd3+ and Sm3+) and Late Transition Metals (LTM) (Ni2+ and Co2+) in single and mixed solutions. The adsorption equilibrium data analyzed and fitted well to Langmuir isotherm model revealing monolayer adsorption process on homogeneously functionalized silica nanoparticles (NPs). All organo-silicas showed high adsorption capacities ranging between 0.5 and 1.8 mmol/g, depending on the function and the target metal ion. Most of these ligands demonstrated higher affinity towards LTM, related to the nature of the functional groups and their arrangement on the surface of nanoadsorbent.
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Affiliation(s)
- Ani Vardanyan
- Department of Molecular Sciences, Swedish University of Agricultural Sciences, P.O. Box 7015, 75007 Uppsala, Sweden;
- Correspondence: (A.V.); (G.A.S.)
| | - Anna Guillon
- Department of Molecular Sciences, Swedish University of Agricultural Sciences, P.O. Box 7015, 75007 Uppsala, Sweden;
| | - Tetyana Budnyak
- Department of Materials Science and Engineering, Division of Nanotechnology and Functional Materials, Uppsala University, P.O. Box 35, 75103 Uppsala, Sweden;
| | - Gulaim A. Seisenbaeva
- Department of Molecular Sciences, Swedish University of Agricultural Sciences, P.O. Box 7015, 75007 Uppsala, Sweden;
- Correspondence: (A.V.); (G.A.S.)
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11
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Bashiri A, Nikzad A, Maleki R, Asadnia M, Razmjou A. Rare Earth Elements Recovery Using Selective Membranes via Extraction and Rejection. MEMBRANES 2022; 12:80. [PMID: 35054606 PMCID: PMC8779715 DOI: 10.3390/membranes12010080] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Revised: 01/05/2022] [Accepted: 01/06/2022] [Indexed: 01/27/2023]
Abstract
Recently, demands for raw materials like rare earth elements (REEs) have increased considerably due to their high potential applications in modern industry. Additionally, REEs' similar chemical and physical properties caused their separation to be difficult. Numerous strategies for REEs separation such as precipitation, adsorption and solvent extraction have been applied. However, these strategies have various disadvantages such as low selectivity and purity of desired elements, high cost, vast consumption of chemicals and creation of many pollutions due to remaining large amounts of acidic and alkaline wastes. Membrane separation technology (MST), as an environmentally friendly approach, has recently attracted much attention for the extraction of REEs. The separation of REEs by membranes usually occurs through three mechanisms: (1) complexation of REE ions with extractant that is embedded in the membrane matrix, (2) adsorption of REE ions on the surface created-active sites on the membrane and (3) the rejection of REE ions or REEs complex with organic materials from the membrane. In this review, we investigated the effect of these mechanisms on the selectivity and efficiency of the membrane separation process. Finally, potential directions for future studies were recommended at the end of the review.
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Affiliation(s)
- Atiyeh Bashiri
- School of Metallurgy and Materials Engineering, Iran University of Science and Technology, Tehran 16845-161, Iran;
| | - Arash Nikzad
- Department of Mechanical Engineering, University of British Columbia, 2054-6250 Applied Science Lane, Vancouver, BC V6T1Z4, Canada;
| | - Reza Maleki
- Department of Physics, University of Tehran, Tehran 14395-547, Iran;
| | - Mohsen Asadnia
- School of Engineering, Macquarie University, Sydney, NSW 2109, Australia;
| | - Amir Razmjou
- UNESCO Centre for Membrane Science and Technology, School of Chemical Engineering, University of New South Wales, Sydney, NSW 2052, Australia
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12
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Kilmartin CP, Ouimet JA, Dowling AW, Phillip WA. Staged Diafiltration Cascades Provide Opportunities to Execute Highly Selective Separations. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c02984] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Cara P. Kilmartin
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Jonathan Aubuchon Ouimet
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Alexander W. Dowling
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - William A. Phillip
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
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13
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Multilayered surface modification of anion exchange membrane by MoS2 flakes for improved antifouling performance. Chem Eng Res Des 2021. [DOI: 10.1016/j.cherd.2021.05.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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14
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Nkinahamira F, Alsbaiee A, Wang Y, Yang X, Chen TY, Cao M, Feng M, Sun Q, Yu CP. Recovery and purification of rare earth elements from wastewater and sludge using a porous magnetic composite of β-cyclodextrin and silica doped with PC88A. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118589] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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15
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Kim K, Candeago R, Rim G, Raymond D, Park AHA, Su X. Electrochemical approaches for selective recovery of critical elements in hydrometallurgical processes of complex feedstocks. iScience 2021; 24:102374. [PMID: 33997673 PMCID: PMC8091062 DOI: 10.1016/j.isci.2021.102374] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022] Open
Abstract
Critical minerals are essential for the ever-increasing urban and industrial activities in modern society. The shift to cost-efficient and ecofriendly urban mining can be an avenue to replace the traditional linear flow of virgin-mined materials. Electrochemical separation technologies provide a sustainable approach to metal recovery, through possible integration with renewable energy, the minimization of external chemical input, as well as reducing secondary pollution. In this review, recent advances in electrochemically mediated technologies for metal recovery are discussed, with a focus on rare earth elements and other key critical materials for the modern circular economy. Given the extreme heterogeneity of hydrometallurgically-derived media of complex feedstocks, we focus on the nature of molecular selectivity in various electrochemically assisted recovery techniques. Finally, we provide a perspective on the challenges and opportunities for process intensification in critical materials recycling, especially through combining electrochemical and hydrometallurgical separation steps.
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Affiliation(s)
- Kwiyong Kim
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Riccardo Candeago
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Guanhe Rim
- Department of Earth and Environmental Engineering, Department of Chemical Engineering, Columbia University, New York, NY 10027, USA.,Lenfest Center for Sustainable Energy, The Earth Institute, Columbia University, New York, NY 10027, USA
| | - Darien Raymond
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Ah-Hyung Alissa Park
- Department of Earth and Environmental Engineering, Department of Chemical Engineering, Columbia University, New York, NY 10027, USA.,Lenfest Center for Sustainable Energy, The Earth Institute, Columbia University, New York, NY 10027, USA
| | - Xiao Su
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
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16
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Permselectivity of Cation Exchange Membranes Modified by Polyaniline. MEMBRANES 2021; 11:membranes11030227. [PMID: 33806737 PMCID: PMC8004698 DOI: 10.3390/membranes11030227] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 03/17/2021] [Accepted: 03/19/2021] [Indexed: 11/17/2022]
Abstract
This work discusses the applicability of polyaniline-modified cation exchange membranes for the separation of monovalent/divalent cations by electrodialysis. A novel method of membrane modification directly in the electrodialysis unit is used to prepare permselective membranes. Complex characterization of the membranes before and after modification allows revealing the influence of membrane matrix on the modification efficiency. The characterization of the membranes includes determination of the diffusion permeability, specific conductivity and current-voltage curves in HCl, NaCl and CaCl2 solutions, as well as transport-structural parameters of the extended three-wire model. The characterization results are used to predict the influence of the modification on membrane permselectivity. The competitive mass transfer of singly and doubly charged cations in the electrodialysis process is investigated in underlimiting and overlimiting currents. Electrodialysis desalination of a solution containing Na+/Ca2+ or H+/Ca2+ cations shows that the modification leads to an increase in membrane permselectivity to single-charged cations due to the repulsion of Ca2+ ions from the positively charged membrane surface. The permselectivity of the polyaniline-modified perfluorinated membrane to H+ in the mixture of H+/Ca2+ cations is observed in all current regimes.
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Guan F, Chen Y, Zhang Y, Yu R. A coupling process of electrodialysis with oxime hydrolysis reaction for preparation of hydroxylamine sulfate. RSC Adv 2021; 11:19238-19247. [PMID: 35478614 PMCID: PMC9033559 DOI: 10.1039/d1ra02766b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 07/05/2021] [Accepted: 05/16/2021] [Indexed: 11/21/2022] Open
Abstract
A coupling process of electrodialysis with oxime hydrolysis reaction for preparing hydroxylamine sulfate was developed in this work. The three steps, including the oxime hydrolysis, the hydroxylamine protonation reaction, and the separation process, are integrated into a triple-chamber electrodialysis stack. In this novel method, the impacts of current density, oxime concentration, and reaction time were investigated. The results indicated that the decomposition voltage is above 1.93 V. Furthermore, the current density is 4.69 × 10−2 A cm−2, the oxime concentration is 1.00 mol L−1, and when reaction time reaches 600 min, the yield of hydroxylamine sulfate is 67.59%. Moreover, the process has excellent mass transfer performance, mild reaction conditions, and simple operation compared with conventional methods. This work will provide a theoretical basis for the green and continuous manufacture of hydroxylamine sulfate and a guide for preparing other hydroxylamine salts through such hydrolysis methods. A coupling process of electrodialysis with oxime hydrolysis reaction for preparing hydroxylamine sulfate was developed in this work.![]()
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Affiliation(s)
- Fenggang Guan
- School of Chemistry and Chemical Engineering
- Shandong University of Technology
- Zibo
- PR China
| | - Yanyan Chen
- School of Chemistry and Chemical Engineering
- Shandong University of Technology
- Zibo
- PR China
| | - Yuying Zhang
- School of Chemistry and Chemical Engineering
- Shandong University of Technology
- Zibo
- PR China
| | - Rujun Yu
- School of Chemistry and Chemical Engineering
- Shandong University of Technology
- Zibo
- PR China
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