Article
Metallurgy & Metallurgical Engineering
Rene A. Silva, Yahui Zhang, Kelly Hawboldt, Lesley Anne James
Summary: This study highlights the potential of ion exchange resins with methyl-glucamine and amidoxime groups for successful removal of Fe(III) from synthetic Ni(II) leach liquor, presenting them as promising alternatives to traditional Fe precipitation processes in the base metal industry.
MINERAL PROCESSING AND EXTRACTIVE METALLURGY REVIEW
(2021)
Article
Engineering, Environmental
Pedro M. Walgode, Rui P. Faria, Alirio E. Rodrigues
Summary: The goal of this study was to separate dihydroxyacetone from glycerol oxidation products using a cascade of two simulated moving bed units. The results demonstrated that the SMB cascade with a strong cationic exchange resin efficiently achieved this separation process.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Marta Marszalek, Ewa Knapik, Marcin Piotrowski, Katarzyna Chruszcz-Lipska
Summary: This article studies the adsorption of cadmium from a 40% phosphoric acid solution in the presence of chloride ions using commercially available anion exchange resins. The effect of chloride and cadmium concentrations on adsorption with the use of two resins is studied in depth. The results indicate that the Amberlite PWA5 resin has advantages in cadmium adsorption efficiency, adsorption at low chloride concentrations, and operation at high flow rates.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Engineering, Chemical
A. A. M. Abusultan, J. A. Wood, T. Sainio, A. J. B. Kemperman, W. G. J. van der Meer
Summary: Reverse osmosis (RO) membrane technology is widely used for producing high-quality drinking water. An ion exchange resin - bipolar membrane electrodialysis hybrid process was developed for sustainable RO permeate remineralization. The most suitable resin for the remineralization process should have high selectivity for calcium and magnesium and low selectivity for monovalent ions.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Nuclear Science & Technology
Chun Ping Huang, Hsin Yu Chen, Wei Hsiang Lin
Summary: Two methods, fluidization with a column and immersion into a solution, were investigated for the separation of anion and cation exchange resins. These methods demonstrated effective separation, reducing the costs of radioactive waste disposal.
PROGRESS IN NUCLEAR ENERGY
(2022)
Article
Engineering, Environmental
Quynh T. N. Le, Eleazer L. Vivas, Kuk Cho
Summary: The novel calcium oxalate/calcium silicate hydrate (Ca-Ox/C-S-H) adsorbent synthesized from blast furnace slag (BFS) exhibits superior maximum uptake capacities for Pb2+ (2117 mg g-1) and Cd2+ (1083 mg g-1). The adsorption mechanism involves ion exchange and equilibration time for Pb2+ is 10 minutes at a solid-to-liquid ratio of 1.0 g L-1, in accordance with both pseudo-first- and pseudo-second-order reaction kinetics models. The adsorption isotherms of Ca-Ox/C-S-H for both metal ions also fit the Sips model well. The adsorbent shows high selectivity towards Pb2+ among various heavy metals and retains high adsorption capacity even after being recycled multiple times.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Polymer Science
Nicoleta Mirela Marin, Anton Ficai, Lucian Alexandru Constantin, Ludmila Motelica, Roxana Trusca
Summary: In this study, two chelate resins were prepared and used to remove Cd2+, Ni2+, Cu2+, and Pb2+ from aqueous solutions. The adsorption capacity of the resins was found to be independent of pH, and the XAD7HP resin showed a higher adsorption capacity compared to the IRA 402 (Cl-) resin. Both resins showed efficient M2+ removal, with the XAD7HP-DR 23 resin being more effective. The M2+ recovery from the chelate resins confirmed their sustainability. The results suggest that these chelate resins have great potential for water treatment applications.
Review
Chemistry, Applied
Vladimir Rychkov, Evgeny Kirillov, Sergey Kirillov, Grigory Bunkov, Maxim Botalov, Vladimir Semenishchev, Denis Smyshlyaev, Andrey Malyshev, Aslan Taukin, Ata Akcil
Summary: Selection of appropriate method for rare earth element (REE) preconcentration from industrial by-products is challenging. Liquid extraction and ion exchange methods are commonly used, while sorption processes are gaining attention for the recovery of REE from industrial wastes.
SEPARATION AND PURIFICATION REVIEWS
(2022)
Article
Nanoscience & Nanotechnology
Ruixiang Hou, Xiaomin Li, Ang Gao, Muhua Zhao, Yang Zhang, Ziang Xie, Chuangnian Zhang, Yan Zhang, Cui Zheng, Zifang Guo
Summary: In our recent work, it was demonstrated for the first time that aluminum ions generated during H2O2 plasma sterilization can penetrate the sterilization package and contaminate the surgical instrument. This paper reports for the first time that aluminum ions can be adsorbed in plasma by sterilization package with surface modification, significantly reducing contamination by up to 92%. The surface modification is achieved by introducing a functional layer on the surface of the sterilization package, where the special chemical groups can combine with aluminum ions through ion exchange and chelation, preventing contamination of the surgical instrument inside.
Article
Engineering, Chemical
Almagul Ultarakova, Zaure Karshyga, Nina Lokhova, Azamat Yessengaziyev, Kaisar Kassymzhanov, Arailym Mukangaliyeva
Summary: This study investigated the sorption of niobium from chloride solutions using various anion-exchange organic sorbents. The Purolite A-100 resin showed the highest affinity for niobium ions, with a distribution coefficient of 184 mL/g and an extraction degree of 41.5%. The Langmuir model was found to be in good agreement with the experimental results, indicating monomolecular layer adsorption on the homogeneous adsorption centers of the resin. The optimal conditions for niobium sorption by the Purolite A-100 resin were determined as hydrochloric acid concentration of 5-10 wt.%, process temperature of 35-40 degrees C, and duration of 40-50 min. The activation energy for niobium sorption from hydrochloric acid solution was calculated to be 25.32 kJ/mol, suggesting a transition from diffusion to kinetic mode.
Article
Engineering, Chemical
Salem Elfeghe, Shams Anwar, Yahui Zhang
Summary: This paper presents a study on the removal of cadmium ions from aqueous solutions using different ion exchange resins. It was found that resins with sulphonic and phosphonic functional groups had excellent performance in removing cadmium ions. The effects of resin dosage, adsorption time, initial concentration of cadmium, and initial pH of solution on cadmium removal were investigated. The adsorption process was fast and reached equilibrium after 30 minutes. The Langmuir adsorption isotherm model fitted well with the studied adsorption processes.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Rehab O. Abdel Rahman, Ahmed M. El-Kamash, Yung-Tse Hung
Summary: This paper summarizes and analyzes the applications of nano-zeolite in water and wastewater treatment. The authors introduce the characteristics and preparation techniques of nano-zeolite and analyze the research trends in this field. The characterization, testing schemes, and theoretical analysis methods for each application are summarized. Finally, the gaps and challenges in this field are concluded.
Article
Engineering, Environmental
Anderson C. Ellis, Charlie J. Liu, Yida Fang, Treavor H. Boyer, Charles E. Schaefer, Christopher P. Higgins, Timothy J. Strathmann
Summary: This study compares the performance of regenerable and emerging single-use anion exchange resins for the treatment of PFASs. The study finds that single-use resins outperform regenerable resins in treating long-chain PFASs. The analysis also reveals the affinity and competition among PFASs and resins.
Article
Biochemistry & Molecular Biology
Oleksandr Petrov, Natalia Iwaszczuk, Irina Bejanidze, Tina Kharebava, Volodymyr Pohrebennyk, Nato Didmanidze, Nunu Nakashidze
Summary: The study of electrical conductivity of ion-exchange membranes in electrolyte solutions is important for membrane processes and practical electrodialysis. This study aims to determine the electrical conductivity of industrial ion-exchange membranes and their basis-granules, and develop a new methodology to obtain accurate values. The results show that membrane conductivity decreases with increasing ion size.
Article
Materials Science, Multidisciplinary
Santeri Kurkinen, Sami Virolainen, Tuomo Sainio
Summary: The chromatographic separation of rare earth elements (REE) using the chelating aminopolycarboxylate ligand methylglycine N,N-diacetate (MGDA) as anionic complexes was experimentally studied. A synthetic mixture of La, Nd, and Eu was used to simulate a REE mixture obtained from processed secondary sources. Successful separation of the REEs was achieved using different strong base anion exchange resins, and the pKa values of the complexes were determined. Fractionation of a ternary La-Nd-Eu mixture was investigated, with La being recovered at approximately 80% purity and yield. Chromatographic separation was found to be an efficient process option for the recovery of pure REE from phosphogypsum.
Article
Chemistry, Multidisciplinary
Paulina Otrembska, Jerzy Gega
SEPARATION SCIENCE AND TECHNOLOGY
(2016)
Article
Chemistry, Multidisciplinary
J. Gega, P. Otrembska
SEPARATION SCIENCE AND TECHNOLOGY
(2014)
Article
Chemistry, Organic
Chuqiao Tu, Kazimierz Surowiec, Jerzy Gega, David W. Purkiss, Richard A. Bartsch
Article
Chemistry, Organic
Amanda L. Boston, Eun Kyung Lee, Kazimierz Surowiec, Jerzy Gega, Richard A. Bartsch
Article
Geochemistry & Geophysics
Joanna Konczyk, Edward Muntean, Jerzy Gega, Aleksandra Frymus, Rajmund Michalski
JOURNAL OF GEOCHEMICAL EXPLORATION
(2019)
Article
Chemistry, Physical
Martyna Dymek, Jerzy Gega, Piotr Pawlik, Henryk Bala
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2020)
Review
Energy & Fuels
Krystyna Giza, Beata Pospiech, Jerzy Gega
Summary: The work describes the construction and recycling of lithium-ion batteries, focusing on obtaining metals as secondary raw materials. It presents the latest trends in recycling methods, including pyro- and hydrometallurgical processes, and their combination. The ecological impact of recycling processes on the environment and future challenges and expectations are discussed.
Article
Chemistry, Physical
Martyna Dymek, Jerzy Gega, Marek Nowak, Mieczylaw Jurczyk, Henryk Bala
Summary: LaNi4.5Co0.5 hydrogen storage alloy was modified by Zn additions and ball milling, and then subjected to alkaline leaching to remove Zn and improve the activation of the alloy. The modified materials showed enhanced hydrogen sorption activity and maintained low electrochemical corrosion and capacity fade.
JOURNAL OF POWER SOURCES
(2023)
Article
Food Science & Technology
Rajmund Michalski, Joanna Konczyk, Edward Muntean, Jerzy Gega, Aleksandra Frymus
BULLETIN OF UNIVERSITY OF AGRICULTURAL SCIENCES AND VETERINARY MEDICINE CLUJ-NAPOCA-FOOD SCIENCE AND TECHNOLOGY
(2019)
Proceedings Paper
Metallurgy & Metallurgical Engineering
Bernadeta Gajda, Jerzy Gega, Dorota Kolodynska, Zbigniew Hubicki
METAL 2017: 26TH INTERNATIONAL CONFERENCE ON METALLURGY AND MATERIALS
(2017)
Article
Chemistry, Physical
Paulina Otrembska, Jerzy Gega
PHYSICOCHEMICAL PROBLEMS OF MINERAL PROCESSING
(2013)
Article
Chemistry, Physical
Jerzy Gega, Wladyslaw Walkowiak
PHYSICOCHEMICAL PROBLEMS OF MINERAL PROCESSING
(2011)
Article
Chemistry, Organic
Chuqiao Tu, Youngchan Jang, Carrie L. Bates, Jerzy Gega, Kazimierz Surowiec, Richard A. Bartsch
Article
Chemistry, Organic
Hui Zhou, Dazhan Liu, Jerzy Gega, Kazimierz Surowiec, David W. Purkiss, Richard A. Bartsch
ORGANIC & BIOMOLECULAR CHEMISTRY
(2007)
