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.

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 Removal of lead, cadmium and copper ions from aqueous solutions by using ion exchange resin C 160

2016 ◽  
Vol 32 (4) ◽  
pp. 129-140 ◽  
Author(s):  
Agnieszka Bożęcka ◽  
Monika Orlof-Naturalna ◽  
Stanisława Sanak-Rydlewska
Keyword(s):  
Ion Exchange ◽  
Aqueous Solutions ◽  
Sorption Capacity ◽  
Exchange Resin ◽  
Copper Ions ◽  
Exchange Process ◽  
Cation Exchange Resin ◽  
Ion Exchange Resin ◽  
Adsorption Model ◽  
Ion Exchange Process

Abstract Industrial waste solutions may contain toxic Pb, Cu, Cd and other metal ions. These ions may also be components of leachates in landfills of ores. The toxicity of the ionic forms of these metals is high. For this reason the paper presents the results of studies on one of the methods to reduce their concentration in aqueous solutions. The article presents the results of studies on the removal of Pb2+, Cd2+ and Cu2+ ions from model aqueous solutions with synthetic ion exchange resin C 160 produced by Purolite. The investigated ion exchanger contains sulfonic acid groups (-SO3H) in its structure and is a strongly acidic cation-exchange resin. The range of the studied initial concentrations of the Pb2+, Cd2+ and Cu2+ ions in the solutions was from 6.25 mg/L to 109.39 mg/L. The results confirmed that the used ion exchange resin C160 efficiently removes the above-mentioned ions from the studied solutions. The highest degree of purification was achieved in lead solutions for the assumed range of concentrations and conditions of the ion exchange process. It reached 99.9%. In the case of other solutions, the ion exchange process occurs with lower efficiency, however it remains high and amounts to over 90% for all the ions. The results of research were interpreted on the basis of the Langmuir adsorption model. For each studied ion, sorption capacity of the ion exchange resin increases until the saturation and equilibrium state is reached. Based on the interpretation of the Langmuir equation coefficients, an indication can be made that the studied ion exchange resin has a major sorption capacity towards the copper ions. In their case, the highest value of constant qmax was obtained in the Langmuir isotherm. For Cu2+ ions it was 468.42 mg/g. For Pb2+ and Cd2+ ions, this parameter reached the values of 112.17 mg/g and 31.76 mg/g, respectively. Ion exchange resin C 160 shows the highest affinity for the Pb2+ ions. In this case, the achieved value of coefficient b is highest and equals 1.437 L/mg.

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 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.

scholarly journals Removal of Ionic Liquids from Oil Sands Processing Solution by Ion-Exchange Resin

2018 ◽  
Vol 8 (9) ◽  
pp. 1611 ◽  
Author(s):  
Hong Sui ◽  
Jingjing Zhou ◽  
Guoqiang Ma ◽  
Yaqi Niu ◽  
Jing Cheng ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Ion Exchange ◽  
Oil Sands ◽  
Surface Characterization ◽  
Exchange Resin ◽  
Cation Exchange Resin ◽  
Ion Exchange Resin ◽  
Water Washing ◽  
Acid Cation ◽  
Exchange Resins

Ionic liquids (ILs) have been reported to be good process aids for enhanced bitumen recovery from oil sands. However, after the extraction, some ionic liquids are left in the residual solids or solutions. Herein, a washing–ion exchange combined method has been designed for the removal of two imidazolium-based ILs, ([Bmim][BF4] and [Emim][BF4]), from residual sands after ILs-enhanced solvent extraction of oil sands. This process was conducted as two steps: water washing of the residual solids to remove ILs into aqueous solution; adsorption and desorption of ILs from the solution by the sulfonic acid cation-exchange resin (Amberlite IR 120Na). Surface characterization showed that the hydrophilic ionic liquids could be completely removed from the solid surfaces by 3 times of water washing. The ionic liquids solution was treated by the ion-exchange resin. Results showed that more than 95% of [Bmim][BF4] and 90% of [Emim][BF4] could be adsorbed by the resins at 20 °C with contact time of 30 min. The effects of some typical coexisted chemicals and minerals, such as salinity, kaolinite (Al4[Si4O10](OH)8), and silica (SiO2), in the solution on the adsorption of ionic liquids have also been investigated. Results showed that both kaolinite and SiO2 exerted a slight effect on the uptake of [Bmim][BF4]. However, it was observed that increasing the ionic strength of the solution by adding salts would deteriorate the adsorption of [Bmim]+ on the resin. The adsorption behaviors of two ILs fit well with the Sips model, suggesting the heterogeneous adsorption of ionic liquids onto resin. The adsorption of ionic liquids onto Amberlite IR 120Na resin was found to be pseudo-second-order adsorption. The regeneration tests showed stable performance of ion-exchange resins over three adsorption–desorption cycles.

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