Solvent Extraction and Ion Exchange最新文献_第4页

Gamma Radiolysis of Phenyl-Substituted TODGAs: Part I 苯基取代TODGAs的γ辐射分解:第一部分

IF 2 4区化学

Solvent Extraction and Ion Exchange Pub Date : 2023-07-29 DOI: 10.1080/07366299.2023.2220765

C. Zarzana, J. McAlpine, A. Wilden, Michelle Hupert, Andrea Stärk, M. Iqbal, W. Verboom, B. Mincher, G. Groenewold, G. Modolo

{"title":"Gamma Radiolysis of Phenyl-Substituted TODGAs: Part I","authors":"C. Zarzana, J. McAlpine, A. Wilden, Michelle Hupert, Andrea Stärk, M. Iqbal, W. Verboom, B. Mincher, G. Groenewold, G. Modolo","doi":"10.1080/07366299.2023.2220765","DOIUrl":"https://doi.org/10.1080/07366299.2023.2220765","url":null,"abstract":"ABSTRACT The radiolytic stabilities of three phenylated analogs of N,N,N’,N’-tetraoctyl diglycolamide (TODGA) were investigated: 2-(2-(di-n-octylamino)-2-oxoethoxy)-N,N-di-n-octyl-2-phenylacetamide (PhTODGA), which has a phenyl substituent bound to a central methylene, 2-(2-(di-n-octylamino)-2-oxo-1-phenylethoxy)-N,N-di-n-octylpropanamide (PhMeTODGA), which also contains a methyl substituent bound to the methylene on the other side of the ether moiety, and, 2-(2-N-n-hexyl-N-phenylamino)-2-oxoethoxy)-N-n-hexyl-N-phenylacetamide (DHDPDGA), which has phenyl substituents located on the amide groups instead of the central methylenes. The objective of Part I of this series of papers covers was to evaluate the contribution of the phenyl group to the radiolytic stability of these diglycolamides when irradiated in a) n-dodecane, and b) n-dodecane in the presence of a nitric acid-containing aqueous phase. The results indicate that the presence of the phenyl group decreases the overall radiolytic stability compared to unsubstituted TODGA. However, the results also indicate that the phenyl groups interact with nitric acid in a cooperative fashion that enhances the radiation stability of the phenylated diglycolamide (DGA) derivatives in the presence of a nitric acid-containing aqueous phase compared to irradiation in only n-dodecane. The results are consistent with the hypothesized formation of nitric acid-phenylated DGA complexes in the n-dodecane phase that are significantly more stable with respect to gamma irradiation, compared to the phenylated DGA molecules alone.","PeriodicalId":22002,"journal":{"name":"Solvent Extraction and Ion Exchange","volume":"41 1","pages":"564 - 581"},"PeriodicalIF":2.0,"publicationDate":"2023-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47632004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Investigation of f-Element Interactions with Functionalized Diamides of Phenanthroline-Based Ligands f元素与菲咯啉基配体功能化二酰胺相互作用的研究

IF 2 4区化学

Solvent Extraction and Ion Exchange Pub Date : 2023-07-28 DOI: 10.1080/07366299.2023.2239866

Emma M. Archer, Shane S. Galley, J. Jackson, J. Shafer

{"title":"Investigation of f-Element Interactions with Functionalized Diamides of Phenanthroline-Based Ligands","authors":"Emma M. Archer, Shane S. Galley, J. Jackson, J. Shafer","doi":"10.1080/07366299.2023.2239866","DOIUrl":"https://doi.org/10.1080/07366299.2023.2239866","url":null,"abstract":"ABSTRACT Separations relevant to trivalent actinides and lanthanides have been a focus of the f-element community in the past few decades. A central focus of this effort has been optimizing ligands for separations. From a fundamental perspective, one must investigate the metal–ligand interactions for optimal ligand design. A well-explored class of ligands, phenanthroline diamides, is reviewed to further elucidate the actinide or lanthanide–ligand interactions of primarily Am3+, Cm3+, and Eu3+. Mixed nitrogen and oxygen donors of this nature are of interest to explore due to their increased selectivity for the trivalent actinides over the trivalent lanthanides. Phenanthroline diamide ligands have shown to have promise in industrial-scale separations compared to bipyridine and pyridine diamide ligands with larger selectivity for the trivalent actinides. These interactions are studied through solvent extraction, spectroscopic, and thermodynamic techniques. Further analysis provided in this review includes an overview of the computational results provided and relevant comparisons to experimental data. The computational parameters considered are the calculated bond lengths, thermodynamic parameters, and values that provide insight to a discussion of covalent interactions between metal and ligand. The information provided is important to benchmark the state-of-the-art basic, applied, and computational chemistry of the phenanthroline diamide class of ligands. GRAPHICAL ABSTRACT","PeriodicalId":22002,"journal":{"name":"Solvent Extraction and Ion Exchange","volume":"41 1","pages":"697 - 740"},"PeriodicalIF":2.0,"publicationDate":"2023-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47555648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Selective Extraction of Cu (II) Using Novel C=O–NOH-Contained Compound-Dodecyl Phenyl Ethyl Hydroxamic Acid and Its Extraction Mechanism 新型含C= o - noh化合物-十二烷基苯基乙基羟肟酸选择性萃取铜(II)及其萃取机理

IF 2 4区化学

Solvent Extraction and Ion Exchange Pub Date : 2023-07-25 DOI: 10.1080/07366299.2023.2229888

D. Cao, Shuai Wang, Xin Ma, Jia Yang, Hong Zhong

{"title":"Selective Extraction of Cu (II) Using Novel C=O–NOH-Contained Compound-Dodecyl Phenyl Ethyl Hydroxamic Acid and Its Extraction Mechanism","authors":"D. Cao, Shuai Wang, Xin Ma, Jia Yang, Hong Zhong","doi":"10.1080/07366299.2023.2229888","DOIUrl":"https://doi.org/10.1080/07366299.2023.2229888","url":null,"abstract":"ABSTRACT Herein, a novel C=O–NOH-contained compound was synthesized and used in the extraction and recovery of copper from sulfate solution. Dodecyl phenyl ethyl hydroxamic acid (DPEHA) exhibited high selectivity to Cu(II) over the competing ions, and the separation factors (β) obtained were β Cu/Zn = 227.370, β Cu/Co = 199.094, β Cu/Ni = 188.889, respectively. The separation effect was stronger than that of 2-hydroxy-5-nonyl acetophenone oxime. Meanwhile, extraction capacity of 0.10 g Cu(II) per gram DPEHA was reached, and the extracted Cu(II) can be stripped effectively. The investigation of extraction mechanism revealed that O atoms in C=O and O-H groups of DPEHA operate as active sites, which could powerfully chelate with Cu(II) by forming stable five-membered rings. The high copper extraction efficiency and selectivity associated with a simple synthesis of DPEHA make it to serve as the potential selective Cu(II) extractant, which also provide a novel insight for the research and development of economical Cu(II) extractants. Graphical Abstract","PeriodicalId":22002,"journal":{"name":"Solvent Extraction and Ion Exchange","volume":"41 1","pages":"789 - 809"},"PeriodicalIF":2.0,"publicationDate":"2023-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48867932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reliable Identification of Relevant Factors for the Reactive Extraction of Succinic Acid from Electrolyte Containing Solutions 从含电解质溶液中反应萃取琥珀酸相关因素的可靠鉴定

IF 2 4区化学

Solvent Extraction and Ion Exchange Pub Date : 2023-07-24 DOI: 10.1080/07366299.2023.2221708

M. Gausmann, Diana Wall, A. Jupke

{"title":"Reliable Identification of Relevant Factors for the Reactive Extraction of Succinic Acid from Electrolyte Containing Solutions","authors":"M. Gausmann, Diana Wall, A. Jupke","doi":"10.1080/07366299.2023.2221708","DOIUrl":"https://doi.org/10.1080/07366299.2023.2221708","url":null,"abstract":"ABSTRACT Reactive extraction of succinic acid by tertiary amines is an effective separation technique. Its potential application for the initial recovery of bio-based succinic acid from fermentation broth. However, the co-extraction of inorganic anions significantly impairs the extraction performance. In this study, we use a statistically backed design of experiments method (DoE) to screen and identify the factors with a significant effect and relevant impact on extraction yield and selectivity. Eight operational factors (Extractant, solvent, succinic acid concentration, amine concentration, initial pH, the type of anion, electrolyte concentration, and temperature) were screened by applying an orthogonal design plan for the experiments. The choice of the extractant and diluent as well as the type of anion had the most significant effect on the extraction yield. In contrast, the selectivity was mainly affected by the concentration ratios of succinic acid and electrolyte. The screening plan reduced the number of experiments from 1728 possible combinations to 72 experiments required to identify the factors while maintaining the significance of the identified effects. We suggest competing mass-action relationships between the pH-dependent protonation of amines and the complexation of succinic acid to explain the observed trends. Graphical abstract","PeriodicalId":22002,"journal":{"name":"Solvent Extraction and Ion Exchange","volume":"41 1","pages":"826 - 853"},"PeriodicalIF":2.0,"publicationDate":"2023-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45129882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Gamma Radiolysis of Phenyl-Substituted TODGAs: Part II 苯基取代TODGAs的γ辐射分解:第二部分

IF 2 4区化学

Solvent Extraction and Ion Exchange Pub Date : 2023-07-06 DOI: 10.1080/07366299.2023.2221290

C. Zarzana, J. McAlpine, A. Wilden, Michelle Hupert, Andrea Stärk, M. Iqbal, W. Verboom, B. Mincher, G. Groenewold, G. Modolo

{"title":"Gamma Radiolysis of Phenyl-Substituted TODGAs: Part II","authors":"C. Zarzana, J. McAlpine, A. Wilden, Michelle Hupert, Andrea Stärk, M. Iqbal, W. Verboom, B. Mincher, G. Groenewold, G. Modolo","doi":"10.1080/07366299.2023.2221290","DOIUrl":"https://doi.org/10.1080/07366299.2023.2221290","url":null,"abstract":"ABSTRACT The radiolytic degradation chemistry of three phenylated analogs of N,N,N’,N’-tetraoctyl diglycolamide (TODGA) was investigated: 2-(2-(di-n-octylamino)-2-oxoethoxy)-N,N-di-n-octyl-2-phenylacetamide (PhTODGA), which has a phenyl substituent bound to a central methylene, 2-(2-(di-n-octylamino)-2-oxo-1-phenylethoxy)-N,N-di-n-octylpropanamide (PhMeTODGA), which also contains a methyl substituent bound to the methylene on the other side of the ether moiety, and, 2-(2-N-n-hexyl-N-phenylamino)-2-oxoethoxy)-N-n-hexyl-N-phenylacetamide (DHDPDGA), which has phenyl substituents located on the amide groups instead of the central methylenes. In Part II of this series of papers radiolytic degradation products were identified after separation with liquid chromatography by High Resolution, Accurate-Mass mass spectrometry and collision-induced dissociation. At least twenty-two radiolytic degradation products were identified for PhTODGA, twenty-nine for PhMeTODGA, and over three dozen for DHDPDGA. The suite of radiolytic degradation products of these three investigated ligands was significantly larger than has been reported for previously studied diglycolamides, owing to their asymmetric nature, and to the identification of several new degradation mechanisms, including addition of methyl, hydroxyl, and nitrogen oxide radicals, that have not been previously reported for diglycolamides. Degradation products that contained addition of a NO2 or NO3 group were particularly prevalent for DHDPDGA, likely due to the phenyl side-groups. Several of these newly observed mechanisms do not appear to depend on the presence of the phenyl groups, suggesting these novel mechanisms may apply to other diglycolamides","PeriodicalId":22002,"journal":{"name":"Solvent Extraction and Ion Exchange","volume":"41 1","pages":"582 - 605"},"PeriodicalIF":2.0,"publicationDate":"2023-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44118557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Selective Separation of Zr(IV) from Simulated High-Level Liquid Wastes by Zeolites 沸石从模拟高放废液中选择性分离Zr(IV

IF 2 4区化学

Solvent Extraction and Ion Exchange Pub Date : 2023-07-04 DOI: 10.1080/07366299.2023.2231493

Yifu Hu, Wenfeng Hao, Wentao Wang, Ye Zhang, Qi Chen, Wenfu Yan, T. Yan

{"title":"Selective Separation of Zr(IV) from Simulated High-Level Liquid Wastes by Zeolites","authors":"Yifu Hu, Wenfeng Hao, Wentao Wang, Ye Zhang, Qi Chen, Wenfu Yan, T. Yan","doi":"10.1080/07366299.2023.2231493","DOIUrl":"https://doi.org/10.1080/07366299.2023.2231493","url":null,"abstract":"ABSTRACT Effectively separating Zr(IV) from strong acidic and radioactive solutions is crucial for spent fuel reprocessing plants, but it remains a challenging task. This study investigated the adsorption of Zr(IV) in HNO3 solutions using zeolites as adsorbents. The zeolites were characterized by X-ray diffraction (XRD)，scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The effects of adsorption time, HNO3 concentration, the initial concentration of Zr(IV), zeolites dosage, and temperature on the Zr(IV) adsorption behaviors were investigated. The results demonstrated that HY zeolite had a higher adsorption capacity for Zr(IV) than H-SSZ-13 zeolite. The adsorption capacity of HY zeolite was influenced by its Si/Al ratio, which determined the density of adsorption sites. The optimal HY zeolite (HY-25) exhibited a maximum adsorption capacity of 30.438 mg/g in 3 M HNO3 solution. Furthermore, the adsorption isotherms and kinetics of Zr(IV) adsorption were investigated. The adsorption of Zr(IV) on zeolites was endothermic and spontaneous, in accordance with the Freundlich’s isotherm model and pseudo-second-order kinetic model. In a simulated strong acidic solution of Zr(IV) and 10 co-existing cations (Ag+, Ba2+, Cs+, Ce3+, Eu3+, Fe3+, La3+, Nd3+, Sm3+, Sr2+), HY-25 exhibited good selective adsorption of Zr(IV), indicating its potential application in the treatment of high-level radioactive liquid waste.","PeriodicalId":22002,"journal":{"name":"Solvent Extraction and Ion Exchange","volume":"41 1","pages":"767 - 788"},"PeriodicalIF":2.0,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42618838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Comparison Between Trioctylamine (TOA) and Tris(2-Ethylhexyl) Amine (TEHA) in Solvent Extraction of Sulfuric Acid* 三辛基胺（TOA）和三（2-乙基己基）胺（TEHA）在硫酸溶剂萃取中的比较*

IF 2 4区化学

Solvent Extraction and Ion Exchange Pub Date : 2023-06-21 DOI: 10.1080/07366299.2023.2225067

A. Heidari, S. Shahini, Davoud Haghshenas Fatmehsari, E. Keshavarz Alamdari

{"title":"A Comparison Between Trioctylamine (TOA) and Tris(2-Ethylhexyl) Amine (TEHA) in Solvent Extraction of Sulfuric Acid*","authors":"A. Heidari, S. Shahini, Davoud Haghshenas Fatmehsari, E. Keshavarz Alamdari","doi":"10.1080/07366299.2023.2225067","DOIUrl":"https://doi.org/10.1080/07366299.2023.2225067","url":null,"abstract":"ABSTRACT The study investigated the behavior of two amines, Trioctylamine (TOA) and Tris(2-Ethylhexyl) amine (TEHA), in the sulfuric acid extraction system, with varying concentrations of extractants and modifiers, as well as the temperature of the sulfuric acid extraction. The study found that TOA had a higher ability in the extraction of sulfuric acid and was less dependent on temperature. However, an increase in the initial sulfuric acid concentration resulted in a drop in acid extraction percentage when TOA was employed, while such a drop was not observed in the case of TEHA. The study also illustrated the necessity of using Octanol as a modifier, with different minimum levels required for TOA and TEHA. Additionally, Octanol showed a positive effect on the extraction level of sulfuric acid in the TEHA – H2SO4 extraction system, which can be considered an advantage in the facile stripping of the loaded organic phase. The slope analysis method revealed that more than 1 mol of TOA is necessary to extract 1 mol of sulfuric acid, while 1 mol of TEHA can absorb 2 mol of sulfuric acid. FTIR spectra analysis confirmed TOA's participation in the extraction of sulfuric acid and provided insights into the chemical bonds formed. Overall, the study provides a comprehensive understanding of the solvent extraction of sulfuric acid and can be useful in optimizing the extraction process for industrial applications.","PeriodicalId":22002,"journal":{"name":"Solvent Extraction and Ion Exchange","volume":"41 1","pages":"810 - 825"},"PeriodicalIF":2.0,"publicationDate":"2023-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44244607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Adsorptive Removal of Selenium(IV) from Aqueous Solution by Ferrous Hydroxide Complex-Zero Nickel Composites 氢氧化亚铁络合物-零镍复合材料吸附去除水溶液中的硒（IV）

IF 2 4区化学

Solvent Extraction and Ion Exchange Pub Date : 2023-05-31 DOI: 10.1080/07366299.2023.2218918

Yan Du, Qing Zhou, Jiankun Zhao, Hexi Wu, Xiaoyan Li, Yibao Liu, Z. Le

{"title":"Adsorptive Removal of Selenium(IV) from Aqueous Solution by Ferrous Hydroxide Complex-Zero Nickel Composites","authors":"Yan Du, Qing Zhou, Jiankun Zhao, Hexi Wu, Xiaoyan Li, Yibao Liu, Z. Le","doi":"10.1080/07366299.2023.2218918","DOIUrl":"https://doi.org/10.1080/07366299.2023.2218918","url":null,"abstract":"ABSTRACT Nanoscale ferrous hydroxide complex-zero nickel composites (FHC/Ni0) were fabricated by ball milling method for Se(IV) adsorption from aqueous solution. The effects of pH, solid-liquid ratio, time, temperature, initial concentration of Se(IV) on the adsorption of Se(IV) by FHC/Ni0 were investigated. FHC/Ni0 was characterized by SEM, XPS, XRD, FT-IR, BET and Zeta potential, and the mechanism of removing Se(IV) was analyzed. The results showed that FHC/Ni0 had a good removal effect on Se(IV). When pH was 5.0, the solid-liquid ratio was 0.15 g L−1, the reaction time was 40 min, the maximum adsorption capacity of Se(IV) by FHC/Ni0 could reach 216 mg g−1. The pseudo-second-order kinetic model and Langmuir had a good fit for the Se(IV) adsorption process of FHC/Ni0, indicating that the monolayer and chemical adsorption played a leading role in the adsorption process. XPS analysis further confirmed that the adsorption of Se on FHC/Ni0 was mainly due to the formation of stable complexes with a large number of functional groups containing Fe, Ni and S, meanwhile, the removal of Se(IV) by the material is achieved through a combination of chemical adsorption and reduction reactions. The research results can demonstrate the feasibility of FHC/Ni0 in Se(IV) removal and provide a theoretical basis for the treatment of wastewater containing Se(IV).","PeriodicalId":22002,"journal":{"name":"Solvent Extraction and Ion Exchange","volume":"41 1","pages":"680 - 696"},"PeriodicalIF":2.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48671565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Extraction of Neptunium, Plutonium, Americium, Zirconium, and Technetium by Di-(2-Ethylhexyl)-Iso-Butyramide (DEHiBA) at High Metal Loadings 高金属负荷双-(2-乙基己基)-异丁胺(DEHiBA)萃取镎、钚、镅、锆和锝

IF 2 4区化学

Solvent Extraction and Ion Exchange Pub Date : 2023-05-26 DOI: 10.1080/07366299.2023.2215833

G. Hall, N. Bessen, P. Zalupski, Emily L. Campbell, T. Grimes, D. Peterman, G. Lumetta

{"title":"Extraction of Neptunium, Plutonium, Americium, Zirconium, and Technetium by Di-(2-Ethylhexyl)-Iso-Butyramide (DEHiBA) at High Metal Loadings","authors":"G. Hall, N. Bessen, P. Zalupski, Emily L. Campbell, T. Grimes, D. Peterman, G. Lumetta","doi":"10.1080/07366299.2023.2215833","DOIUrl":"https://doi.org/10.1080/07366299.2023.2215833","url":null,"abstract":"ABSTRACT Increased focus on carbon neutral energy has generated a resurgence of interest in nuclear power, and in particular advanced reactors which are likely to utilize high assay low enriched uranium (HALEU). This in turn could increase the economic attractiveness of recovering still partially enriched uranium from used nuclear fuel. Concomitant to development of advanced reactors, advanced reprocessing schemes should be developed which address the disadvantages to well established reprocessing schemes. The present study focuses on using di-(2-ethylhexyl)-iso-butyramide (DEHiBA) under high metal loading conditions for the reprocessing of used nuclear fuel. The elements examined in the study include the dominant transuranic actinides (Np, Pu, Am) as well as the often-problematic Tc and Zr. By increasing the concentration of the extractant from the more commonly reported 1.0 M – 1.5 M, the extraction of hexavalent actinides is substantially increased, while maintaining effective rejection of tri, tetra, and pentavalent actinides, particularly in the presence of high loadings of uranium. The extraction of Zr by 1.5 M DEHiBA is noted to be negligible by comparison to tributyl phosphate (TBP), however the coextraction of Tc with U is observed to be nominally twice the quantity that is extracted by TBP indicating a need for effective Tc management.","PeriodicalId":22002,"journal":{"name":"Solvent Extraction and Ion Exchange","volume":"41 1","pages":"545 - 563"},"PeriodicalIF":2.0,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46619905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

CFD Analysis of Simultaneous Removal of Copper (II) and Zinc from Aqueous Solution Using a Hollow Fiber Membrane Contactor 中空纤维膜接触器同时去除水溶液中铜（II）和锌的CFD分析

IF 2 4区化学

Solvent Extraction and Ion Exchange Pub Date : 2023-05-26 DOI: 10.1080/07366299.2023.2214589

Borhan Pourtalebi, Mohammad Valibeknejad, S. M. Abdoli, A. Akbari

{"title":"CFD Analysis of Simultaneous Removal of Copper (II) and Zinc from Aqueous Solution Using a Hollow Fiber Membrane Contactor","authors":"Borhan Pourtalebi, Mohammad Valibeknejad, S. M. Abdoli, A. Akbari","doi":"10.1080/07366299.2023.2214589","DOIUrl":"https://doi.org/10.1080/07366299.2023.2214589","url":null,"abstract":"ABSTRACT The current study is a new method for liquid–liquid extraction of copper (II) and zinc that was carried out using an efficient solvent called trifluoroacetylacetone in a hollow fiber membrane contactor (HFMC). To analyze the extraction process and understand its underlying mechanisms, computational fluid dynamics (CFD) was employed. The extraction was performed in three domains by coupling the mass and momentum equation to express the solute transport from the tube side to the shell side through the membrane in a hollow fiber membrane contactor. The finite element approach simulates the governing equation and validates the results. This work aims to obtain the distribution of copper (II) and zinc by performing a simulation. The effect of some crucial parameters was investigated. The results illustrate that the extraction efficiency increases by increasing the partition coefficient and decreasing the flow rate on the tube side. Also, the temperature significantly affects extraction, and by enhancing the temperature from 298 to 313 K, the efficiency increases by 12% for copper (II) and 6.6% for zinc. Furthermore, the membrane porosity was found to be another influential parameter. By increasing the membrane porosity of 25% to 90%, the efficiency increases to 95% for copper (II) and 98% for zinc.","PeriodicalId":22002,"journal":{"name":"Solvent Extraction and Ion Exchange","volume":"41 1","pages":"654 - 679"},"PeriodicalIF":2.0,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42327857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1