Article
Engineering, Chemical
Hui Yu, Xinyu Li, Chuanqi Geng, Xiaojia Wu, Fan Zhang, Shichao Tian, Zhiyong Zhou, Zhongqi Ren
Summary: In this study, a series of N-methylpyrrolidone (NMP)-based coordinated ionic liquids (ILs) with different metal salts were synthesized and their performance in separating aromatic and aliphatic hydrocarbons was investigated. Among them, NMP-0.1Fe(NO3)(3)center dot 9H(2)O showed high selectivity and successfully separated toluene from n-heptane or cyclohexane. Experimental and modeling results confirmed the potential industrial applications of NMP-0.1Fe(NO3)(3)center dot 9H(2)O.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Pablo Navarro, Daniel Moreno, Marcos Larriba, Julian Garcia, Francisco Rodriguez, Roberto I. Canales, Jose Palomar
Summary: There is a lack of knowledge on comprehensive studies of ionic liquids and extraction processes. This study applies the computational COSMO-based/Aspen multiscale methodology to analyze a wide set of 100 common ILs in the aromatic/aliphatic separation field. The analysis reveals the evolution from extractive properties to extractor behavior, the influence of the model's rigor, the role of IL at commercial specifications, and the role of the separation train.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Physical
Chao Sun, Yanli Zhang, Yasen Dai, Jiafu Xing, Yajuan Qu, Yinglong Wang, Jun Gao
Summary: Ionic liquids are used as extractants to efficiently and environmentally separate the azeotrope of ethyl acetate and ethanol. Through mechanism analysis, four ILs are selected as extractants and their separation performance is verified through experiments.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Mahboob Nemati, Mir Ali Farajzadeh, Nail Altunay, Mustafa Tuzen, Sava Kaya, Mikhail M. Maslov, Mohammad Reza Afshar Mogaddam
Summary: In this study, a combination of dispersive solid phase extraction and ionic liquid-based dispersive liquid-liquid microextraction was used to extract aromatic amines from leather industries wastewater. The analytes were adsorbed by N and S doped carbon and then concentrated through microextraction. High performance liquid chromatography-ultraviolet detector was used for determination. The method was validated and showed good performance in terms of limits of detection and quantification, precision, enrichment factor, and extraction recovery. The approach was successfully applied to determine the analytes in wastewater samples from leather manufacturers.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Engineering, Chemical
Qinghua Liu, Guoxuan Li, Chengmin Gui, Zhigang Lei
Summary: Liquid-liquid extraction is an effective method to reduce the content of aromatics in fluid catalytic cracking (FCC) diesel and improve oil quality. In this study, [EMIMj[NTF(2)j was selected as the most suitable extractant, and its high selectivity and good recycling performance were confirmed through experiments and calculations.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Chemistry, Physical
Xumin Wu, Jimin Wu, Jun Gao, Dongmei Xu, Lianzheng Zhang, Yixin Ma, Yinglong Wang
Summary: 2,2-difluoroethanol (DFE) is an important fine chemical in the chemical industry, but its regeneration from aqueous solution is challenging due to the formation of azeotropic mixture with water. This study investigated the use of hydrophobic imidazole-based ionic liquids as extraction agents to regenerate DFE from its aqueous mixture, showing promising results in terms of separating power and interaction energies.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Engineering, Chemical
Julia Sommer, Birgit Bromberger, Christian Robben, Roland Kalb, Peter Rossmanith, Patrick-Julian Mester
Summary: This study investigated the use of ionic liquids for the extraction of viral particles, identifying several liquids with good extraction properties and demonstrating the best results at a neutral pH of 7.5.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Physical
Akram Ali Nasser Mansoor Al-Haimi, Ke Wang, Xin Xu, Lianzheng Zhang, Dongmei Xu, Jun Gao, Yinglong Wang
Summary: The study utilized ionic liquid extractants to recover allyl alcohol, investigated various interactions through calculations and experiments, evaluated the performance of the extractants, and used the NRTL model to fit the data, enhancing the efficiency of allyl alcohol recovery.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Sachind Prabha Padinhattath, Ramesh L. Gardas
Summary: Despite available conventional wastewater treatment techniques, an efficient method for removing micropollutants is still difficult to find. Micropollutants are trace chemicals in the aquatic environment, including pharmaceuticals, food additives, cosmetics, and dyes. The development of sustainable and cost-effective alternatives to eliminate these toxins has become urgent. Ionic liquids have emerged as a potential candidate for wastewater treatment due to their structure tunability and unique chemical properties. This study focuses on developing N-benzylethanolamine-based ionic liquids to remove diclofenac sodium, a priority pharmaceutical micropollutant, from water. The ILs were optimized using B3LYP theory and 6-311++G(d, p) basis set, and their interactions with diclofenac were investigated using the integral equation formalism polar continuum model (IEFPCM). Liquid-liquid extraction (LLE) method was used for experimental studies, and parameters affecting extraction efficiencies were optimized. The impact of hydrophobicity, hydrogen bonding, and 7C-7C interactions on ILs extraction efficiency was found to be significant.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Engineering, Chemical
Dongmei Xu, Shanshan He, Chengyi Yuan, Lijie Peng, Wenyang Fan, Huiwen Huang, Jun Gao, Yinglong Wang
Summary: In this study, liquid-liquid extraction was used to separate the mixture of IPAC and IPA, with three ionic liquids demonstrated as effective extractants, particularly [Bmim] [Hi(2)PO(4)]. The experimental data was fitted using the NRTL model to optimize the separation process for industrial applications.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Chemistry, Physical
Maria Atanassova
Summary: Ionic liquids have been extensively researched in the field of metallic species extraction and separation chemistry over the past two decades, with continued academic interest in developing smart reagents for specific applications. This paper reviews previous literature and discusses the design of new ionic liquid compounds aimed at improving the selectivity and efficiency of solvent extraction systems.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Engineering, Environmental
Kaihang Zhang, David Kujawski, Chris Spurrell, Dong Wang, Junchen Yan, John C. Crittenden
Summary: The introduction of ionic liquid [A336][NTf2] has been shown to improve the extraction efficiency of perfluorooctanoic acid (PFOA) and suppress emulsification from drinking water. The results demonstrate that [A336][NTf2] can effectively mitigate emulsification and achieve high extraction efficiency of up to 88.21wt% for PFOA under optimized conditions.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Energy & Fuels
Chao Sun, Yajuan Qu, Yasen Dai, Peizhe Cui, Yinglong Wang, Zhaoyou Zhu, Jun Gao
Summary: This study systematically investigated the separation process of EAC and IPA and screened suitable ILs/DESs using the COSMO model. The combination mechanism of ILs/DES-IPA was elucidated through ESP and electron density difference analysis. The results showed that [EMim][AC] had the best extraction capacity. Liquid-liquid equilibrium experiments confirmed the theoretical analysis. The NRTL model was found to accurately predict the phase behavior of the system. This work provides important data for the separation design of the EAC-IPA system.
Article
Chemistry, Physical
Tayebe Gharehdaghi, Javad Karimi-Sabet, Seyyed Mohammad Ghoreishi, Maryam Motallebipour, Sodeh Sadjadi
Summary: This study aims to find an effective Task-Specific Ionic Liquid (TSIL) for extracting calcium ions. By using a computational model and conducting synthesis experiments, it was confirmed that the selected TSIL exhibited high efficiency in calcium extraction.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Engineering, Chemical
Placido Arenas-Fernandez, Inmaculada Suarez, Baudilio Coto
Summary: This study presents new experimental data on the use of ionic liquids for liquid-liquid extraction to remove aromatic compounds from synthetic crude oil. Computational models and molecular dynamics simulations were used to support the experimental results and provide insights into the extraction process. The results show that the cation of the ionic liquid plays a key role in the extraction process.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Review
Chemistry, Analytical
I. V. Pletnev, S. V. Smirnova, N. V. Shvedene
JOURNAL OF ANALYTICAL CHEMISTRY
(2019)
Review
Chemistry, Analytical
I. V. Pletnev, S. V. Smirnova, N. V. Shvedene
JOURNAL OF ANALYTICAL CHEMISTRY
(2019)
Article
Chemistry, Analytical
Svetlana Smirnova, Dmitry Ilin, Igor Pletnev
Summary: This study reported the preconcentration of Cd(II), Co(II), Cu(II), Ni(II), Pb(II), and Zn(II) in aqueous biphasic system using TBAB - H2O - (NH4)2SO4, followed by ICP-OES determination for the first time. The method allowed for high preconcentration factor and decreased detection limits for ICP-OES determination of heavy metals.
Article
Chemistry, Analytical
Svetlana Smirnova, Kristina A. Lyskovtseva, Igor Pletnev
Summary: Tetraalkylammonium based liquid-liquid biphasic systems were utilized for the extraction and spectrophotometric determination of synthetic food dyes. The study examined various factors affecting the extraction process and established optimal conditions, leading to nearly 100% recovery rates and low detection limits for all analytes under study.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Jonathan M. Goodman, Igor Pletnev, Paul Thiessen, Evan Bolton, Stephen R. Heller
Summary: The software for the IUPAC Chemical Identifier, InChI, is highly reliable and has been upgraded to version 1.06 with significant new features including support for pseudo-element atoms and improved description of polymers. Research results show that the accuracy of version 1.05 was 99.996% and version 1.06 represents a step closer to perfection, with few applications needing changes as a result of the upgrade.
JOURNAL OF CHEMINFORMATICS
(2021)
Article
Chemistry, Analytical
K. A. Lyskovtseva, G. B. Eldyaeva, S. Smirnova, I. Pletnev
Summary: An aqueous biphasic system (ABS) was used to extract synthetic food dyes with high recovery and low detection limits. The method has been successfully applied to determine dyes in various beverages, drugs, and cosmetics.
JOURNAL OF ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Svetlana V. Smirnova, Vladimir V. Apyari
Summary: This study uses aqueous two-phase systems (ATPSs) containing a mixture of cationic and anionic surfactants for the preconcentration of synthetic food dyes. A rapid, simple, low-cost, and environmentally friendly method based on microextraction in ATPSs and spectrophotometric/colorimetric determination is proposed. The method was applied to the determination of dyes in food samples and food-processing industrial wastewater.
Correction
Chemistry, Analytical
K. A. Lyskovtseva, G. B. Eldyaeva, S. V. Smirnova, I. V. Pletnev
JOURNAL OF ANALYTICAL CHEMISTRY
(2022)
Review
Chemistry, Multidisciplinary
Igor Pletnev, Svetlana Smirnova, Andrei Sharov, Yury A. Zolotov
Summary: This review focuses on new generation extraction solvents, including ionic liquids, aqueous biphasic systems, and eutectic solvents. These solvents based on organic ionic components offer environmental safety and green character, but face challenges in uniform terminology and interpreting system behavior.
RUSSIAN CHEMICAL REVIEWS
(2021)
Review
Chemistry, Analytical
S. V. Smirnova, I. V. Pletnev
JOURNAL OF ANALYTICAL CHEMISTRY
(2019)
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)