SELECTION OF ION-EXCHANGE RESIN FOR EXTRACTION OF REE FROM COMPLEX SOLUTIONS DURING PROCESSING OF OIL CRACKING CATALYST

2020 ◽  
Vol 25 (2) ◽  
pp. 39-43
Author(s):  
Mariya Pogodaeva ◽  
Alexandra Bogdanova ◽  
Lyudmila Adeeva
Keyword(s):  
Ion Exchange ◽  
Exchange Resin ◽  
Ion Exchange Resin ◽  
Distribution Coefficients ◽  
Ion Distribution ◽  
Ion Exchange Separation ◽  
Complex Solutions ◽  
Exchange Resins ◽  
Oil Cracking ◽  
Selection Of

It was found that the ion exchange resins Purolite C100 H and Purolite S-957 can be used to extract lanthanum (III) ions from solutions. The values of the resin capacities for lan-thanum (III), iron (III) and aluminum and the ion distribution coefficients for both resins were determined. It is shown that according to the values of the separation coefficients, Purolite C100 H resin can be used for ion exchange separation of lanthanum ions from complex solutions

scholarly journals THE STUDY OF SORPTION OF NICKEL, COBALT, COPPER IONS RECOVERY FROM MULTICOMPONENT SOLUTIONS BY VARIOUS ION EXCHANGE RESINS

2021 ◽  
pp. 45-52
Author(s):  
Людмила Сергеевна Авфукова
Keyword(s):  
Ion Exchange ◽  
Exchange Resin ◽  
Copper Ions ◽  
Ion Exchange Resin ◽  
Copper Recovery ◽  
Nickel Cobalt ◽  
Sorption Method ◽  
Modern Methods ◽  
Exchange Resins ◽  
Multicomponent Solutions

Статья посвящена одному из современных методов и технологий извлечения никеля, кобальта и меди из многокомпонентных растворов - сорбционный метод. В качестве сорбентов выступают ионообменная смола КУ-2-8 и хелатообразующие смолы. Рассмотрен один изметодов удаления веществ, сопутствующих, мешающих извлечению ценных компонентов, одним из которых является железо. The paper considers one of the modern methods and technologies of nickel, cobalt and copper recovery from multicomponent solutions; that is a sorption method. KU-2-8 ion exchange resin and chelating resins are present as sorbents. One of the method of substances which prevent removing valuable components is discussed. One of such substance is considered to be iron.

Study of LPOP Residue on Resin Mineralization and Solidification

2010 ◽  
Author(s):  
Gen-ichi Katagiri ◽  
Morio Fujisawa ◽  
Kazuya Sano ◽  
Norikazu Higashiura
Keyword(s):  
Ion Exchange ◽  
Inductively Coupled Plasma ◽  
Exchange Resin ◽  
Low Pressure ◽  
Cold Test ◽  
Ion Exchange Resin ◽  
Temperature Plasma ◽  
Volume Weight ◽  
Exchange Resins ◽  
Spent Resin

Fuji Electric had developed the low pressure oxygen plasma technology for mild decomposition and mineralization of an organic material such as ion exchange resin. This method is suitable for radioactive spent resin volume/weight reduction and stabilization for final disposal. On this process, the ion-exchange resins are vaporized and decomposed into gas-phase with pyrolysis, and then, they are decomposed and oxidized with low-pressure plasma activity based on oxygen. And this process is achieved under moderate condition for radio active waste. • incinerate temperature: 400–700 deg C; • low-pressure (low-temperature) plasma condition: 10–50 Pa. From the result of this process, named of LPOP(low pressure oxidation process) by the inductively coupled plasma, we have confirmed that the process is applicable for organic fireproof waste including ion-exchange resin, and found that the used resin treatment performance is the same as cold test (using imitate spent resin) [1] [2] [3]. In this paper, the outline of the LPOP technology, and two research results on the possibility of solidification with cement of LPOP residue for geological disposes are reported. (1)Study of the residue chemical form after LPOP process (2)Study of the solidification character with cement.

scholarly journals Catalytic Dehydration of Fructose to 5-Hydroxymethylfurfural (HMF) in Low-Boiling Solvent Hexafluoroisopropanol (HFIP)

Molecules ◽  
2018 ◽  
Vol 23 (8) ◽  
pp. 1866 ◽  
Author(s):  
Sarah Tschirner ◽  
Eric Weingart ◽  
Linda Teevs ◽  
Ulf Prüße
Keyword(s):  
Ion Exchange ◽  
Exchange Resin ◽  
Reaction System ◽  
Water System ◽  
Catalyst Particle ◽  
Ion Exchange Resin ◽  
Ion Exchange Resins ◽  
Reaction Conditions ◽  
Water As Solvent ◽  
Exchange Resins

A mixture of hexafluoroisopropanol (HFIP) and water was used as a new and unknown monophasic reaction solvent for fructose dehydration in order to produce HMF. HFIP is a low-boiling fluorous alcohol (b.p. 58 °C). Hence, HFIP can be recovered cost efficiently by distillation. Different ion-exchange resins were screened for the HFIP/water system in batch experiments. The best results were obtained for acidic macroporous ion-exchange resins, and high HMF yields up to 70% were achieved. The effects of various reaction conditions like initial fructose concentration, catalyst concentration, water content in HFIP, temperature and influence of the catalyst particle size were evaluated. Up to 76% HMF yield was attained at optimized reaction conditions for high initial fructose concentration of 0.5 M (90 g/L). The ion-exchange resin can simply be recovered by filtration and reused several times. This reaction system with HFIP/water as solvent and the ion-exchange resin Lewatit K2420 as catalyst shows excellent performance for HMF synthesis.

Ion Exchange Resin Separation of Metals Occurring in Plant Material

1966 ◽  
Vol 49 (2) ◽  
pp. 298-305
Author(s):  
Eugene A Breault
Keyword(s):  
Ion Exchange ◽  
Exchange Resin ◽  
Cation Exchange Resin ◽  
Ion Exchange Resin ◽  
Acid Solutions ◽  
Uniform Particles ◽  
Hydrochloric Acid Solutions ◽  
Ion Exchange Separation ◽  
Resin Separation ◽  
Unified Method

Abstract The study of the separation of metallic chlorides on Amberlite CG-120 (200–400 mesh) cation exchange resin was continvied. Na, K, Mo, Al, Ca, and Fe have been separated by hydrochloric acid solutions and determined by polarography or flame photometry. Semimicro quantities of these metals can be separated from each other with a minimum of eluting agent, small resin beds, and simple equipment. Mechanical grading of the air-dried resin was used to obtain more uniform particles. The ion exchange separation scheme offers advantages over present official procedures, and it should provide a unified method for the analysis of metals in mixtures. Further study is recommended.

Development of pyrolytic monolithic carbon composites for the conditioning of spent ion exchange resins

2012 ◽  
Vol 1475 ◽  
Author(s):  
Pamela B. Ramos ◽  
Néstor O. Fuentes ◽  
Vittorio Luca
Keyword(s):  
Ion Exchange ◽  
Exchange Resin ◽  
Cation Exchange Resin ◽  
Processing Parameters ◽  
Ion Exchange Resin ◽  
Mathematical Functions ◽  
Waste Forms ◽  
Resin Beads ◽  
Temperature Ramp ◽  
Exchange Resins

ABSTRACTThe pyrolysis of ion exchange resin beads that are used for the purification of water in reactor primary- and secondary-cooling circuits can result in stable and leach resistant carbonaceous products. However, free flowing beads are less desirable waste forms for disposal in sub-surface or surface repositories than monolithic masses of low porosity. We have investigated the pyrolysis of polymeric resin – cation exchange resin composites to give mechanically robust and chemically durable monolithic carbonaceous waste forms that are suitable for repository disposition. Also investigated was the dependence of product properties on various processing parameters (temperature ramp and final temperature). As a first approach, epoxy resins were used for the preparation of monoliths since such resins cure at room temperature and result in a relatively high carbon yield. Carbonaceous monolithic products were prepared at 400, 500, 600, 700 and 800 °C using a temperature ramp of 2°C/min. The products were maintained at the chosen temperatures for a period of one hour. Mass losses, volume reduction, hardness and compressive strength were measured and mathematical functions are proposed to describe the measured values of these properties. The carbon monoliths were observed to be mechanically robust.

scholarly journals Study of Uni-Univalent H+/K+ and Uni-Bivalent H+/Mg2+ Ion Exchange Reactions Using Nuclear Grade Resin Indion-223

2014 ◽  
Vol 33 ◽  
pp. 231-239
Author(s):  
Pravin U. Singare ◽  
Akmal L. Khan Mohammed ◽  
N.N. Dixit
Keyword(s):  
Ion Exchange ◽  
Exchange Resin ◽  
Anion Exchange Resin ◽  
Ionic Species ◽  
Nuclear Grade ◽  
Exchange Reactions ◽  
Process Industries ◽  
Efficient Separation ◽  
Exchange Resins ◽  
Selection Of

In the present paper the uni-univalent and uni-bivalent ion exchange reactions were investigated using nuclear grade anion exchange resin Indion-223 in H+ form. For both H+/K+ uni-univalet ion exchange reactions and H+/Mg2+ uni-bivalet ion exchange reactions, the equilibrium constant K values increases from 0.01710 to 0.02374 and from 0.000177 to 0.000333 respectively as the reaction temperature rises from 35.0 °C to 45.0 °C. The increase in K values with temperature suggest endothermic ion exchange reactions having the enthalpy change values of 22.72 and 51.46 kJ/ mol respectively. The results of such studies will help in selection of suitable ion exchange resins in order to bring about efficient separation of different ionic species present in the waste water effluents released from nuclear as well as chemical process industries.

scholarly journals Synthesis and Thermal Stability of Melamine-Formaldehyde-Nitro Aniline Ion-Exchange Resin

2014 ◽  
Vol 32 ◽  
pp. 112-118 ◽  
Author(s):  
Shailesh N. Zala ◽  
Mitesh B. Gondaliya ◽  
Javed G. Mahetar
Keyword(s):  
Thermal Stability ◽  
Ion Exchange ◽  
Exchange Resin ◽  
Ion Exchange Resin ◽  
Antimicrobial Activities ◽  
Ion Exchange Resins ◽  
Moderate Activity ◽  
Melamine Formaldehyde ◽  
Exchange Resins ◽  
Thermal Stability Of

A series of resins was synthesized and analyzed for selective ion-exchange nature for some metals. Substituted aniline was reacted with formaldehyde, melamine. For the synthesis of ion-exchange resins, sulfuric acid was used as a catalyst. These resins were characterized by elemental analysis and studied antimicrobial activities. Synthesized Resin shows ion exchange capability and moderate activity against microbial. Ion exchange resin also showed reusability and stability at an elevated temperature.

scholarly journals POTENCIALIDADE DE USO DA RESINA AMBERLITE IR 120 NO TRATAMENTO DE RESÍDUOS QUÍMICOS CONTENDO ESPÉCIES IÔNICAS COM CR2O72-, FE3+ E MNO4-

2014 ◽  
Vol 39 (1) ◽  
pp. 12
Author(s):  
Fernanda Da Silva Nogueira ◽  
Aparecida Maria Simões Mimura ◽  
Júlio César José Da Silva ◽  
Rafael Arromba de Sousa
Keyword(s):  
Ion Exchange ◽  
Exchange Resin ◽  
Ion Exchange Resin ◽  
Ion Exchange Resins ◽  
Chemistry Department ◽  
Experimental Conditions ◽  
Cationic Resin ◽  
Exchange Resins ◽  
Potential Use ◽  
Acid Waste

Ion exchange resins have been widely used as an option for wastewater treatments and are effective in reducing the concentration of residual metals. In this context, the aim of this study was to evaluate the potential use of an ion exchange resin for the treatment of an acid waste regularly produced at the Chemistry Department in the Federal University of Juiz de Fora. Employing optimized experimental conditions the studied method allowed to remove, significantly the Fe3+, Cr2O72- and MnO4- content, using only the cationic resin, AMBERLITE IR 120®. In addition, desorption of these species was also studied, in which the metals content could be concentrated into a volume 70% smaller than the ordinary waste volume. Besides, after that desorption the resin can be reused and the method showed to be adequate for routine uses.

scholarly journals Potential and pitfalls of XRF-CS analysis of ion-exchange resins in environmental studies

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ludvig Löwemark ◽  
Alice Chien-Yi Liao ◽  
Yu-Hsuan Liou ◽  
Shital Godad ◽  
Ting-Yi Chang ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Edge Effects ◽  
Exchange Resin ◽  
Ion Exchange Resin ◽  
Drying Methods ◽  
Ion Exchange Resins ◽  
Sample Treatment ◽  
Exchange Resins ◽  
Sample Carrier ◽  
Secondary Fluorescence

AbstractDetecting clandestine, intermittent release of heavy metal pollution into natural and man-made water ways is challenging. Conventional chemical methods are both labor intensive and expensive. A recent approach combining ion-exchange resins with the capabilities of X-ray fluorescence core scanners (XRF-CS) therefore is of great interest. In short, ion-exchange resin is deployed in the water using small sachets, the resin is then collected, dried, filled into sample holders and scanned using XRF-CS. Ion-exchange resins take up heavy metals in proportion to the concentration in the ambient water, with a correlation coefficient (R2) between concentration and XRF-CS counts better than 0.96 for most elements. However, a number of parameters influence the measurements. Different drying methods introduce differences in the XRF counts because of lattice bound water, resin shrinkage, and disaggregation of the resin particles. Furthermore, the newly developed sample carrier, which was constructed using 3D printed polymers, contains trace amounts of elements that may influence the sample measurements through edge effects and secondary fluorescence. In the tested sample carrier materials, substantial levels of Cr, Fe, Co, and Zn were detected, while Ca, Ti, Ni, Cu, Ga showed variable levels. Ba, Tl and Bi show very low levels, and Pb is only of importance in the PLA carrier. It is therefore necessary to streamline the analysis-process to ensure that the variations in sample treatment and drying and filling methods are minimized. It is also recommended that only spectra from the center of the compartments are used for the evaluation to avoid edge effects caused by secondary fluorescence of metals in the compartment walls. Although the technique of using ion-exchange resin sachets and XRF-CS analysis is only semi-quantitative, it is a cost effective and fast way to monitor large areas for environmental pollution, and the new sample carrier greatly contributes to make the process faster and less error prone.

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