Article
Engineering, Chemical
Qiang Yan, Yimin Cai, Zhipeng Wang, Xue Dong, Lihua Yuan, Wen Feng, Jing Chen, Chao Xu
Summary: A novel task-specific ionic liquid was synthesized via click chemistry and its performance in the selective separation of trivalent americium from lanthanide was studied. The results showed that the ionic liquid exhibited stronger extractability to Am(III) over Eu(III) and a cation exchange mechanism was proposed. This study provides valuable insights into the coordination chemistry of f-elements in ionic liquids and the potential of task-specific ionic liquids in actinide/lanthanide separation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Jenni Lie, Jhy-Chern Liu
Summary: A novel selective separation method for lanthanide group (La, Ce, and Nd) from acidic leaching solutions of spent NiMH batteries using disodium phosphate as precipitation agent at low pH was investigated. The recovery efficiency of lanthanides increased with decreasing molar ratio of lanthanides to phosphate ions (Ln/P) and increasing pH and temperature. The separation process demonstrated high efficiency and selectivity for critical rare metals recovery from spent NiMH batteries.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Bingbing Yang, Lu Bai, Tingting Li, Liyuan Deng, Lei Liu, Shaojuan Zeng, Jiuli Han, Xiangping Zhang
Summary: Efficient separation and recovery of ammonia are crucial for environmental protection and resource utilization. This study developed hybrid membranes for NH3 separation through multiple-site interaction, combining the unique features of ionic liquids and a midblock-sulfonated block copolymer, which significantly enhanced NH3 permeation performance.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Shanshan Zhang, Junfeng Wang, Fei Shen, Daoguang Wang, Suojiang Zhang
Summary: In this study, the selective electrodialysis (SED) method was employed to separate ILs and metal ions in a spinning solution. Various operating parameters were investigated to evaluate the separation ability. The results demonstrated that the SED process can effectively separate metal ions from IL aqueous solutions.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Rafael Rubio-Vives, Jose M. Porras-Vazquez, Lucia dos Santos-Gomez, Javier Zamudio-Garcia, Antonia Infantes-Molina, Jesus Canales-Vazquez, David Marrero-Lopez, Enrique R. Losilla
Summary: In this study, ceramics with composition Ln(5.4)MoO(11.1) (Ln = Nd, Sm and Gd) were prepared and their polymorphic forms were investigated by sintering at different rates. X-ray diffraction studies confirmed single-phase materials, with a simple cubic fluorite structure for the quenching-cooled samples. Electron diffraction studies indicated the formation of domains with superstructure ordering. XPS analysis showed the presence of mixed Mo6+ and Mo5+ for all compositions, explaining the electronic conduction in an oxidizing atmosphere.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Chemical
Wanqing Lin, Zhigang Zhao, Fan Yang, Zhaoli Liu, Fengzhi Tan, Meiying Xie, Ying Ma, Lingyi Meng
Summary: A novel crystalline adsorbent MIL-101-DGA has been synthesized in this study, showing excellent separation capability for europium and other rare earth ions. The experiments demonstrated high separation coefficient and maximum adsorption capacity, highlighting the potential of MIL-101-DGA for effective separation and recovery of europium.
MINERALS ENGINEERING
(2021)
Article
Nanoscience & Nanotechnology
Bo Li, Jia Chen, Jing Xiao, Liang Zhao, Hongdeng Qiu
Summary: In this study, novel nanoporous sulfonic covalent organic frameworks (TFPB-DABDA iCOFs) were successfully synthesized and found to have highly selective adsorption separation ability for lanthanide elements, especially for those with larger ionic radius differences.
ACS APPLIED NANO MATERIALS
(2023)
Article
Engineering, Chemical
Ana R. Nabais, Sadia Ahmed, Muhammad Younis, Jin-Xiu Zhou, Joao R. Pereira, Filomena Freitas, David Mecerreyes, Joao G. Crespo, Mu-Hua Huang, Luisa A. Neves, Liliana C. Tome
Summary: In this study, a new type of mixed matrix iongel membrane, composed entirely of organic materials, was fabricated by combining ionic liquids (ILs) and porous organic polymers (POPs). The resulting membranes exhibited improved gas separation performance and ideal selectivity, making them promising for CO2 separation processes.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Xingyuan Wang, Jingying Yang, Xiansong Shi, Zhe Zhang, Congcong Yin, Yong Wang
Summary: Covalent organic frameworks (COFs) are potential materials for engineering advanced membranes to address challenging separation demands. This study demonstrates the synthesis of ionic COFs with charged nanochannels on conductive supports using an electrical method, resulting in the rapid construction of composite membranes for charge-selective separations of small molecules. The membranes exhibit remarkable molecular separation performances due to their relatively ordered and charged nanochannels.
Article
Engineering, Chemical
Junyuan Hua, Jintao He, Hongchang Pei, Xiaohua Ma, S. Ranil Wickramasinghe, Jianxin Li
Summary: The worldwide demand for lithium is growing rapidly. Extracting lithium from saltlake brines with low concentration and high Mg/Li ratio remains challenging. In this study, a supported ionic liquid membrane contactor was developed for high-efficiency lithium recovery. The contactor showed excellent Li+ mass transfer performance, providing an effective solution for selective separation of Mg/Li and utilization of lithium resources in salt lake water.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Hanqian Pan, Xian Suo, Zhenglu Yang, Liyuan Chen, Xili Cui, Huabin Xing
Summary: A new ionic ultramicroporous polymer (IUP) has been successfully developed with excellent separation performance and strong solvent resistance. This material shows efficient separation under industrial conditions, high selectivity, and moderate adsorption capacity.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Environmental
Chenlu Wang, Yanlei Wang, Ju Liu, Mi Wang, Zhongdong Gan, Hongyan He
Summary: This study investigates the potential and mechanism of confined ionic liquids in graphene oxide for carbon dioxide separation through extensive molecular dynamics simulations. The results show that confined ionic liquids can enhance the solubility and selectivity of carbon dioxide, which is significant for theoretical understanding and practical applications.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Chunqing Cai, Takafumi Hanada, Adroit T. N. Fajar, Masahiro Goto
Summary: This study presents an efficient extraction method for recovering lithium from salt lake solutions using a novel extraction system. The research systematically investigated the extraction conditions, demonstrating the effective use of ionic liquids as extractants for lithium, even under acidic conditions. The results also showed high selectivity for lithium over sodium and potassium in the extraction process.
Article
Environmental Sciences
Zain Iqbal, Zufishan Shamair, Muhammad Usman, Mazhar Amjad Gilani, Muhammad Yasin, Sidra Saqib, Asim Laeeq Khan
Summary: A facile approach was used to synthesize ionic liquid in a porous metal organic framework, leading to enhanced CO2 separation performance.
Article
Green & Sustainable Science & Technology
Zhuoheng Tu, Ping Zhang, Mingzhen Shi, Xiaomin Zhang, Youting Wu, Xingbang Hu
Summary: Selective and simultaneous separation of CO and H-2 from N-2 using protic chlorocuprate ionic liquids (PCILs)-based membranes is reported in this study. The selectivity of CO/H-2 can be tuned drastically by varying the Cu(I) content and operating temperature. This work offers a new strategy for designing IL-based membranes for CO and H-2 capture.
Article
Chemistry, Physical
Wissam Zahreddine, Iyad Karame, Catherine Pinel, Laurent Djakovitch, Franck Rataboul
MOLECULAR CATALYSIS
(2020)
Article
Chemistry, Multidisciplinary
Cyril Micheau, Guilhem Arrachart, Raphael Turgis, Manuel Lejeune, Micheline Draye, Stephanie Michel, Sophie Legeai, Stephane Pellet-Rostaing
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2020)
Article
Metallurgy & Metallurgical Engineering
Moheddine Wehbie, Guilhem Arrachart, Tamir Sukhbaatar, Xavier F. Le Goff, Iyad Karame, Stephane Pellet-Rostaing
Summary: The newly synthesized extractants showed higher efficiency in extracting uranium from sulfate media, with successful quantitative recovery of uranium after extraction.
Review
Engineering, Chemical
Guilhem Arrachart, Julien Couturier, Sandrine Dourdain, Clement Levard, Stephane Pellet-Rostaing
Summary: Rare earth elements play crucial roles in advanced technologies, making the development of optimized processes for their recovery necessary. Ionic solvents, including ionic liquids and deep-eutectic solvents, have attracted much attention as an alternative to conventional processes for metal recovery. Significant studies in the last decade regarding the recovery of REEs are presented in this review.
Article
Polymer Science
Ruth Oye Auke, Guilhem Arrachart, Romain Tavernier, Ghislain David, Stephane Pellet-Rostaing
Summary: A solid-phase extraction system was investigated for the extraction and recovery of rare-earth elements. Phenolic ion-exchange resins were synthesized using a non-toxic aromatic dialdehyde as a substitute for toxic formaldehyde. The resins showed a high ion-exchange capacity and the ability to back-extract the rare-earth elements using an acid solution.
Article
Chemistry, Multidisciplinary
Guillaume Mossand, Evan Lelong, Chen Xing, Frantz Ndebulia Watchou, Antoine Leydier, Guilhem Arrachart, Stephane Pellet-Rostaing
Summary: This work presents the synthesis of formo-phenolic resins containing CAM moieties combined with phenol, catechol or resorcinol. These chelating resins have been developed for selective extraction of U(VI) from seawater, which poses challenges due to its high pH and abundant alkaline and earth-alkaline cations. Results from sorption experiments show that the synthesized resins exhibit good sorbent properties for U(VI), with a maximum uptake capacity of about 50 mg/g and pronounced selectivity for uranium even in saline conditions. Thermodynamic and kinetic adsorption data were determined using Langmuir adsorption model and pseudo-second order model for the best resin.
Article
Biochemistry & Molecular Biology
Sarah Asaad, Marwa Hamandi, Guilhem Arrachart, Stephane Pellet-Rostaing, Serge Kimbel, Stephane Daniele
Summary: Efficient and selective extraction of precious and critical metal ions was achieved using zirconia nanoparticles modified with organic carbamoyl phosphonic acid ligands. The modification of commercial ZrO2 dispersed in aqueous suspension was achieved through optimizing the Bronsted acid-base reaction in ethanol/H2O solution. The modified ZrO2 showed promising stability, efficiency, and reusability in industrial applications for selective gold recovery, with di-N,N-butyl carbamoyl pentyl phosphonic acid ligand showing the highest adsorption efficiency and hydrophobicity playing a significant role.
Article
Engineering, Chemical
C. Xing, B. Bernicot, G. Arrachart, S. Pellet-Rostaing
Summary: Ultra/nano filtration (UF/NF) is an effective method for ion separation in aqueous solution through the electric and steric effect. The extraction of uranium from unconventional resources like seawaters is important for nuclear fuel production. Commercial inorganic UF/NF membranes have been investigated for the separation of uranium from other salts in natural or synthetic seawaters and freshwaters. Various physical-chemical parameters influence the rejection of different metal ions, and speciation diagrams help understand the rejection mechanism. The study examines the electric effect of UF/NF membranes for solution species rejection and demonstrates the potential for uranium concentration.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Editorial Material
Chemistry, Multidisciplinary
Guillaume Mossand, Evan Lelong, Chen Xing, Frantz Ndebulia Watchou, Antoine Leydier, Guilhem Arrachart, Stephane Pellet-Rostaing
Summary: This study reports the synthesis of formo-phenolic resins with catecholamide moieties for selective extraction of U(VI) from seawater. The synthesized materials showed good sorbent properties and a pronounced selectivity for uranium, even under saline conditions. Thermodynamic and kinetic adsorption data were determined for the best resin using the Langmuir adsorption model and pseudo-second order model.
Article
Chemistry, Analytical
Elise Guerinoni, Sandrine Dourdain, Thomas Dumas, Guilhem Arrachart, Fabrice Giusti, Zijun Lu, Pier-Lorenzo Solari, Stephane Pellet-Rostaing
Summary: This study investigates uranium solvent extraction under AMEX process conditions, revealing unexpected nonlinear extraction behaviors of sulphate and bis(trifluoromethanesulfonyl)imide anions. Spectroscopic analysis showed that uranium extraction occurs via a protonated amine and three sulphates. The study provides important insights for optimized application.
Article
Chemistry, Multidisciplinary
Claudine El Khoueiry, Fabrice Giusti, Evan Lelong, Guilhem Arrachart, Bilal Nsouli, Iyad Karame, Stephane Pellet-Rostaing
Summary: This study found that thiourea formo-phenolic polymers as adsorbents have good affinity and high adsorption capacity for mercury (Hg) removal, with the potential for regeneration after desorption, highlighting their potential in the remediation of mercury-contaminated water.
Article
Chemistry, Multidisciplinary
Cesar L. Usma, S. Dourdain, G. Arrachart, S. Pellet-Rostaing
Summary: The extraction of La(III), Eu(III) and Fe(III) was compared in n-dodecane and two ionic liquids, with the use of the extractant DMDOHEMA. The study showed that the use of ionic liquids as the organic solvent greatly enhances extraction efficiency, with mechanisms changing with different nitric acid concentrations.
Article
Chemistry, Multidisciplinary
N. Felines, G. Arrachart, F. Giusti, A. Beillard, C. Marie, S. Pellet-Rostaing
Summary: Numerous studies have been conducted on the mechanisms and structures of extraction in hydrometallurgical processes, but the influence of extractant stereochemistry on extraction efficiency remains largely unexplored. The study demonstrated promising results in the extraction of actinides using different stereoisomers of DEHBA, underscoring the importance of extractant chirality in this process.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Robert Winkler, Stephane Pellet-Rostaing, Guilhem Arrachart
Summary: The study investigated the structure directing mechanisms of silica hybrid materials prepared from tailor-made precursors under different experimental conditions. Molecular interactions and chemically directed network connectivity were found to play significant roles in determining the main structural features. Thermal analysis revealed the stability of lamellar structures and the metastability of hexagonal and cubic structures upon heating.
MATERIALS CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Multidisciplinary
Robert Winkler, Stephane Pellet-Rostaing, Guilhem Arrachart
APPLIED SCIENCES-BASEL
(2020)
Article
Engineering, Chemical
Yunfei Yu, Xue Yang, Chenchen Zhang, Jie Chen, Wei Lin, Jianqiang Meng
Summary: This study reports an environmentally friendly and simple approach for preparing double-network (DN) ion gel membranes with high strength and excellent gas separation performance. By optimizing crosslinking density, mass ratio, and the type and content of free ionic liquid, the mechanical and gas separation properties of the DN membrane are improved.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Si-qi Jiang, Qiang Gao, Xi-guang Li, Chao-zhu Deng, Jun Qiu, Xiang-nan Zhu
Summary: A dual-strengthening pretreatment method is proposed to remove PVDF more efficiently and enhance the leaching of LiCoO2. Experimental results show that dual-strengthening pretreatment can effectively remove PVDF and significantly improve the leaching efficiency compared to single pretreatment methods.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Zengchi Hu, Xiaoyu Wang, Xiaohui Zhang, Xue Li, Jiangbin Xia
Summary: The rapid fabrication of high-performance composite membranes based on CMPs using simple and low-cost methods is challenging. In this study, three CMPs-based composite membranes were rapidly fabricated with adjustable size using unidirectional diffusion synthesis. The microstructural design enhanced the rejection rates of the membranes and they showed strong hydrolytic resistance, thermal stability, and acid-base resistance. Electrostatic adsorption and the adjustable microstructures significantly varied the repellence of the membranes to different charged molecules.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Farzaneh Rouhani, Matineh Ayedi, Nasser Safari
Summary: Introducing defects into porous metal-organic frameworks is important for improving their adsorption performance. Quasi-MOFs, an underutilized variant of large-scale, fundamentally deficient MOFs, have been found to have substantial amounts of unsaturated metal sites to offset the drawbacks of MOFs. In this study, a quasi-MOF was produced using a water-stable MOF and demonstrated significantly improved phosphate adsorption capability due to the presence of defect sites.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Valentin Reungoat, Morad Chadni, Louis M. M. Mouterde, Fanny Brunissen, Florent Allais, Helene Ducatel, Irina Ioannou
Summary: This study focuses on the recovery of sinapic acid using liquid-liquid extraction assisted by a hollow fiber membrane contactor from an aqueous feed obtained through the hydrolysis of mustard bran. The screening of solvents of different chemical nature showed that all tested solvents had an extraction efficiency of more than 80% for pH < 5. Four solvents were selected for use in the hollow fiber membrane contactor, and the volatile solvents showed higher mass transfer coefficients compared to non-volatile solvents. The extraction efficiency was intensified by increasing the initial concentration of sinapic acid and the feed-to-solvent ratio. CPME was found to have optimal recovery efficiency at a phase ratio of 8:1, yielding 0.9 g of sinapic acid per liter of CPME used.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Takahiro Sakamoto, Takafumi Hanada, Hayate Sato, Mayu Kamisono, Masahiro Goto
Summary: The emergence of the battery society has led to a high demand for battery metals, resulting in a strain on their supply. This study introduces a novel technique using a hydrophobic deep eutectic solvent (DES) for leaching and recovering battery metals from low-grade nickel laterite ores. The DES enables selective leaching and recovery of the metals, offering a promising pathway for the extraction of critical battery metals.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Rongrong He, Jiarui Chen, Chunyao Zhang, Dan Lu, Lin Zhang, Tao He
Summary: Researcher has developed a method to quantify the charge density in nanofiltration (NF) membrane separation layer and applied it in NF membranes that can separate Mg2+ and Li+. The results showed that overcompensated amine groups played a major role, and there was a linear relationship between charge density and coating bi-layers or PAH layers.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Zhijian Zhang, Min Chen, Zhe Lin, Zhichao Yang, Yafeng Du, Zhihui Chen, Zhenhao Yang, Kongyin Zhao, Ligang Lin
Summary: Membrane technology plays an important role in molecular/ion separation processes, but faces challenges such as membrane fouling. This study introduces a new ion-crosslinking method to fabricate copper alginate hydrogel membranes with improved mechanical strength and antimicrobial capabilities. The membranes exhibit excellent separation performance and enhanced long-term molecule/ion separation through improved anti-swelling properties. Molecular dynamics simulations and life cycle analysis highlight the pore structure and environmental friendliness of the hydrogel membranes. These findings provide valuable insights for developing sustainable hydrogel membranes with stable performance and high separation efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Dongmei Liu, Aiying Guo, Yanling Qi, Zhixin Ji, Hongjuan Li, Zhiwei Zhang, Xinyue Zhang, Kunze Wu, Aijun Cai
Summary: In this study, a stable magnetic Mg/Mn-layered double oxide-doped biochar composite (MgMnLDO-MBC) was prepared and successfully used for the removal of antibiotics and bacteria from wastewater. The composite exhibited enhanced surface areas, adsorption sites, and free radicals, leading to improved catalytic activity. The effects of different factors on the removal efficiency were evaluated, and the composite showed good reusability.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Feng Wang, Zhaoyong Bian, Yaru Zhang, Wenchao Yu, Qiang Zhang, Hui Wang
Summary: In this study, a nanofibrous layered structure of Ff-Ti3C2Tx-Co3O4 was prepared by self-assembling nanofibrous Co3O4 with lamellar fluorine-free MXene (Ff-Ti3C2Tx). The Ff-Ti3C2Tx-Co3O4 exhibited excellent catalytic activity for degradation, resistant to ionic interference, and maintained high removal efficiency of sulfamethoxazole (SMX) in municipal wastewater. The rapid SMX degradation involved fast electron transfer in redox cycles with PMS and the generation of 1O2 via PMS ->center dot O2 -> 1O2. This work provides new insights into antibiotic degradation mechanisms and electron transfer based on PMS activation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Weipeng He, Jiacheng Luo, Yujie Wu, Tianhao Luo, Chen Tang
Summary: This study comparatively evaluated the role of cationic, anionic, and nonionic polyacrylamides (PAMs) in ballasted flocculation of clay suspensions under different aluminum sulfate (AS) coagulant dosages. The selection of PAMs and AS dosage had a significant influence on the size and shear resistance of ballasted floc aggregates.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Lixian Wang, Lizhi Zhao, Didi Si, Zhixin Li, Huiqin An, Hui Ye, Qingping Xin, Hong Li, Yuzhong Zhang
Summary: Metalloporphyrin-based nanozymes integrated with poly (vinylidene fluoride) membrane show high catalytic activity and reusability for the decolorization of Congo Red dye in continuous flow process.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Yongfei Ma, Chenyu Zeng, Yongzhen Ding, Jiayi Tang, Ondrej Masek, Zhikang Deng, Rui Mu, Zulin Zhang
Summary: In this study, sludge-derived biochar (SBC) was functionalized with various iron salts to enhance its adsorption ability for sulfamethoxazole (SMX) and magnetic collection performance. Ball milling was further employed to treat the optimal iron salt functionalized SBC (MSBC), resulting in ball milled SBC (BMSBC) with improved adsorption performance for SMX. The dominant driving mechanism for SMX adsorption onto BMSBC was confirmed to be multiple physicochemical forces, including 7C-7C conjugation, pore filling, H-bonding, Fe-O complexation, and electrostatic interactions. BMSBC exhibited favorable adsorption ability for SMX in actual waters and could be easily collected within 1 min due to its magnetic sensitivity.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Jinglin Tan, Xiaohui Mao, Wenjihao Hu, Hongbo Zeng
Summary: This study investigates the influence of PDMS chain architectures on surface properties and reveals that PDMS coatings with looped structures exhibit superior hydrophobicity, self-cleaning, and water sliding compared to coatings with linear structures. Additionally, both looped and linear PDMS coated stainless steel mesh/polyester fibers show efficient separation of oil/water mixture.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Wei-Liang Chen, Chih-Chia Cheng, Chien-Hsing Lu, Jem-Kun Chen
Summary: This study designs a novel sandwich-structured capacitor that reduces the absorption time of pollutants using dielectrophoresis force. By coating graphene oxide on polystyrene microspheres as adsorbents and encapsulating them within the capacitor, the adsorption rate is significantly enhanced. Additionally, frequency manipulation allows for the recycling of adsorbents and concentration of dyes, minimizing secondary pollution.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
