{"title":"Basic Study on Solvent Extraction Characteristics of [Hbet][Tf 2 N] for Advanced Removing Process of Mo(VI) and Zr(IV) from High Level Liquid Waste","authors":"Soma Kono, T. Arai, Koichiro Takao","doi":"10.5182/JAIE.29.25","DOIUrl":"https://doi.org/10.5182/JAIE.29.25","url":null,"abstract":"","PeriodicalId":16331,"journal":{"name":"Journal of ion exchange","volume":"15 1","pages":"25-34"},"PeriodicalIF":0.0,"publicationDate":"2018-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88924104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Miura Takuya, Takizawa Norifumi, Togashi Koki, S. Atsushi, Endo Masatoshi
Geochemical reference samples, a natural zeolite, synthetic zeolites, vermiculite, and bentonite were tested for their adsorption and desorption characteristics of cesium. Large amounts of cesium were adsorbed on bentonite and natural zeolite because of their pore sizes or lamellar structures and their large numbers of exchangeable cations. In the geochemical reference samples, the adsorption behavior of cesium was affected by the exchangeable cation content and the soil corrosion product content. The desorption ratios of cesium from the minerals were influenced by the amounts of cations in the solution. The desorption ratios of cesium from the natural and synthetic zeolites were 5.4% and 70% to 75%, respectively, with 0.1 mol/L of hydrochloric acid. The amounts of aluminum ions eluted from the synthetic zeolites due to structure collapse was approximately 30-fold higher than that from the natural zeolite. Cesium adsorption ratios onto the minerals and the desorption ratios from the minerals decreased as the calcination temperature increased. X-ray diffraction and scanning electron microscopy confirmed that the mineral surface was melted by heating. The desorption of cesium ions was inhibited by cement hardening treatment of the minerals because the cement hydrates that coated the mineral particle surfaces could adsorb cesium.
{"title":"Adsorption/Desorption Characteristics of Cesium Ions on Natural and Synthetic Minerals","authors":"Miura Takuya, Takizawa Norifumi, Togashi Koki, S. Atsushi, Endo Masatoshi","doi":"10.5182/JAIE.29.9","DOIUrl":"https://doi.org/10.5182/JAIE.29.9","url":null,"abstract":"Geochemical reference samples, a natural zeolite, synthetic zeolites, vermiculite, and bentonite were tested for their adsorption and desorption characteristics of cesium. Large amounts of cesium were adsorbed on bentonite and natural zeolite because of their pore sizes or lamellar structures and their large numbers of exchangeable cations. In the geochemical reference samples, the adsorption behavior of cesium was affected by the exchangeable cation content and the soil corrosion product content. The desorption ratios of cesium from the minerals were influenced by the amounts of cations in the solution. The desorption ratios of cesium from the natural and synthetic zeolites were 5.4% and 70% to 75%, respectively, with 0.1 mol/L of hydrochloric acid. The amounts of aluminum ions eluted from the synthetic zeolites due to structure collapse was approximately 30-fold higher than that from the natural zeolite. Cesium adsorption ratios onto the minerals and the desorption ratios from the minerals decreased as the calcination temperature increased. X-ray diffraction and scanning electron microscopy confirmed that the mineral surface was melted by heating. The desorption of cesium ions was inhibited by cement hardening treatment of the minerals because the cement hydrates that coated the mineral particle surfaces could adsorb cesium.","PeriodicalId":16331,"journal":{"name":"Journal of ion exchange","volume":"5 1","pages":"9-15"},"PeriodicalIF":0.0,"publicationDate":"2018-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90824609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
There has been focus on possible use of ionic liquids (ILs) as novel liquid media. Water-immiscible ILs can be used as extraction phase solvents in solvent extraction method. The hydrophobic ILs, however, are also “liquid ion-exchangers” and their nature as the extraction phase is very complicated unlike that of conventional organic solvents. This paper presents an outline of the authors’ fruits of research on possible use of the hydrophobic ILs as extraction phase solvents for the separation of metal ions, including evaluation of extracted species in IL chelate extraction, unique synergistic effects, novel extractants for the IL extraction system and triphasic extraction system using ILs.
{"title":"金属イオン分離材としてのイオン液体の機能解析;金属イオン分離材としてのイオン液体の機能解析;Study on Ability of Ionic Liquids as Separation Media for Metal Ions","authors":"Naoki Hirayama","doi":"10.5182/JAIE.28.37","DOIUrl":"https://doi.org/10.5182/JAIE.28.37","url":null,"abstract":"There has been focus on possible use of ionic liquids (ILs) as novel liquid media. Water-immiscible ILs can be used as extraction phase solvents in solvent extraction method. The hydrophobic ILs, however, are also “liquid ion-exchangers” and their nature as the extraction phase is very complicated unlike that of conventional organic solvents. This paper presents an outline of the authors’ fruits of research on possible use of the hydrophobic ILs as extraction phase solvents for the separation of metal ions, including evaluation of extracted species in IL chelate extraction, unique synergistic effects, novel extractants for the IL extraction system and triphasic extraction system using ILs.","PeriodicalId":16331,"journal":{"name":"Journal of ion exchange","volume":"59 1","pages":"37-44"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80545034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"イオン交換能を有する金属分離試薬の開発とそれを固定化した金ナノ粒子による比色分析法への展開;イオン交換能を有する金属分離試薬の開発とそれを固定化した金ナノ粒子による比色分析法への展開;Development of Ion Exchange Ligands with High Separation Performance and Colorimetric Analysis Using Gold Nanoparticles Decorated with The Functional Ligands","authors":"Kojiro Shimojo","doi":"10.5182/JAIE.28.1","DOIUrl":"https://doi.org/10.5182/JAIE.28.1","url":null,"abstract":"","PeriodicalId":16331,"journal":{"name":"Journal of ion exchange","volume":"9 1","pages":"1-10"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78934462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"抽出クロマトグラフィーに用いる含浸吸着材への表面処理が吸着・溶離挙動に及ぼす影響;抽出クロマトグラフィーに用いる含浸吸着材への表面処理が吸着・溶離挙動に及ぼす影響;Effect of Surface Treatment on Adsorption and Desorption Behavior of Impregnated Adsorbent for Extraction Chromatography","authors":"Kohei Nagoshi, Tsuyoshi Arai, S. Watanabe, Yuichi Sano, Masayuki Takeuchi, Mutsumi Sato, Hiroshi Oikawa","doi":"10.5182/JAIE.28.11","DOIUrl":"https://doi.org/10.5182/JAIE.28.11","url":null,"abstract":"","PeriodicalId":16331,"journal":{"name":"Journal of ion exchange","volume":"17 1","pages":"11-18"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77567395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Development of Zeolite-Based Adsorbents for Highly Contaminated Water in Fukushima","authors":"M. Matsukura, F. Kurosaki","doi":"10.5182/jaie.28.51","DOIUrl":"https://doi.org/10.5182/jaie.28.51","url":null,"abstract":"","PeriodicalId":16331,"journal":{"name":"Journal of ion exchange","volume":"10 1","pages":"51-57"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79552645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In the production of semiconductors, ultrapure water is used for cleaning in each process. In recent years, the adverse effects of impurities in ultrapure water for cleaning have increased with the miniaturization and high integration of the circuit-line width of semiconductors. Therefore the demand for high-quality ultrapure water has increased. We examined the metal adhesion restraint on silicon wafers based on the adsorption of polystyrene sulfonate (PSA) and metal ions. PSA was microinjected into a sample of ultrapure water containing the metal, and a cleaning vessel was allowed to overflow with the sample. Subsequently, the wafers in the sample were immersed and the amount of the metal deposited on them was measured. In addition sulfur concentration was calculated. It was found that the adhesion of the metal ions adsorbed with PSA in ultrapure water on the wafers is suppressed. A metal adhesion restraint rate greater than 95% was obtained with the polyvalent metal ions. Furthermore, it was revealed that the adhesion of PSA to the wafer was negligible. We may apply this technique as a metal contamination restraint method for each cleaning process in the production of semiconductors.
{"title":"ポリスチレンスルホン酸による微量金属イオンのウェーハ付着抑制;ポリスチレンスルホン酸による微量金属イオンのウェーハ付着抑制;Adhesion Inhibition of a Trace Metal onto Wafers Using Polystyrene Sulfonate","authors":"Shigeyuki Hoshi, Toshimasa Kato, Takaaki Cyuuman, Hiroshi Morita","doi":"10.5182/JAIE.28.58","DOIUrl":"https://doi.org/10.5182/JAIE.28.58","url":null,"abstract":"In the production of semiconductors, ultrapure water is used for cleaning in each process. In recent years, the adverse effects of impurities in ultrapure water for cleaning have increased with the miniaturization and high integration of the circuit-line width of semiconductors. Therefore the demand for high-quality ultrapure water has increased. We examined the metal adhesion restraint on silicon wafers based on the adsorption of polystyrene sulfonate (PSA) and metal ions. PSA was microinjected into a sample of ultrapure water containing the metal, and a cleaning vessel was allowed to overflow with the sample. Subsequently, the wafers in the sample were immersed and the amount of the metal deposited on them was measured. In addition sulfur concentration was calculated. It was found that the adhesion of the metal ions adsorbed with PSA in ultrapure water on the wafers is suppressed. A metal adhesion restraint rate greater than 95% was obtained with the polyvalent metal ions. Furthermore, it was revealed that the adhesion of PSA to the wafer was negligible. We may apply this technique as a metal contamination restraint method for each cleaning process in the production of semiconductors.","PeriodicalId":16331,"journal":{"name":"Journal of ion exchange","volume":"63 1","pages":"58-64"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84735957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"イオン交換学会功績賞を受賞して―膜分離化学の可能性―;イオン交換学会功績賞を受賞して―膜分離化学の可能性―;View for the Achievement Award 2016 from Japan Society of Ion Exchange","authors":"Manabu Igawa","doi":"10.5182/JAIE.28.45","DOIUrl":"https://doi.org/10.5182/JAIE.28.45","url":null,"abstract":"","PeriodicalId":16331,"journal":{"name":"Journal of ion exchange","volume":"8 1","pages":"45-50"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78442816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A variety of new inorganic compounds could be prepared by solid state reaction or ion-exchange reaction, and their crystal structures and some properties were clarified. Layer- and tunnel-type niobates were synthesized by solid state reaction and their ion-exchange properties were investigated. The alkaline ions in the interlayer of Rb(Mg 0.34 Nb 1.66 )O 5 and KFe x Ti 1–2x Nb 1+x O 5 were ion-exchanged with proton. The protonated derivative of Rb(Mg 0.34 Nb 1.66 )O 5 was hydrated easily even under low relative humidity and for those of the solid solution, KFe x Ti 1–2x Nb 1+x O 5 the hydration depended on the value of x. The Cs + ion in Cs 3 Fe 0.5 Nb 5.5 O 16 with a tunnel structure was never ion-exchanged with proton, however, it was replaced partially with Rb + ion by immersing in molten salt. By using hydrothermal reaction variety of new compounds in zirconium phosphates and bismuthates were synthesized, and their crystal structures and some properties were clarified. The hydrothermal reaction using ZrOCl 2 ·8H 2 O as one of the starting compounds produced seven types of new zirconium phosphates, and one of them exhibited unique ion-exchange property. New bismuthates with Bi 5+ could be synthesized by hydrothermal reaction by using NaBiO 3 ·nH 2 O as one of the starting compounds, and some of them were superconductors or photocatalyst under visible light irradiation.
通过固相反应和离子交换反应制备了多种新型无机化合物，并阐明了它们的晶体结构和一些性质。采用固相反应合成了层型和隧道型铌酸盐，并对其离子交换性能进行了研究。Rb(Mg 0.34 Nb 1.66) o5和KFe x Ti 1 - 2x Nb 1+x o5中间层中的碱性离子与质子发生离子交换。Rb(Mg 0.34 Nb 1.66) o5的质子化衍生物在较低的相对湿度下也容易水化，而对于固溶体，KFe x Ti 1 - 2x Nb 1+x o5的水化取决于x的值。具有隧道结构的c3fe 0.5 Nb 5.5 o16中的Cs +离子不与质子发生离子交换，但通过浸在熔盐中部分被Rb +离子取代。通过水热反应合成了多种磷酸锆和铋酸盐中的新化合物，并对它们的晶体结构和一些性质进行了澄清。以ZrOCl 2·8H 2 O为起始化合物的水热反应制得7种新型磷酸锆，其中一种具有独特的离子交换性能。以NaBiO 3·nh2o为起始化合物，通过水热反应可合成含Bi 5+的新型铋酸盐，部分铋酸盐在可见光照射下表现为超导体或光催化剂。
{"title":"無機イオン交換体の合成および結晶化学に関する研究;無機イオン交換体の合成および結晶化学に関する研究;Study on Preparation and Crystal Chemistry of Inorganic Ion-Exchangers","authors":"Nobuhiro Kumada","doi":"10.5182/JAIE.28.29","DOIUrl":"https://doi.org/10.5182/JAIE.28.29","url":null,"abstract":"A variety of new inorganic compounds could be prepared by solid state reaction or ion-exchange reaction, and their crystal structures and some properties were clarified. Layer- and tunnel-type niobates were synthesized by solid state reaction and their ion-exchange properties were investigated. The alkaline ions in the interlayer of Rb(Mg 0.34 Nb 1.66 )O 5 and KFe x Ti 1–2x Nb 1+x O 5 were ion-exchanged with proton. The protonated derivative of Rb(Mg 0.34 Nb 1.66 )O 5 was hydrated easily even under low relative humidity and for those of the solid solution, KFe x Ti 1–2x Nb 1+x O 5 the hydration depended on the value of x. The Cs + ion in Cs 3 Fe 0.5 Nb 5.5 O 16 with a tunnel structure was never ion-exchanged with proton, however, it was replaced partially with Rb + ion by immersing in molten salt. By using hydrothermal reaction variety of new compounds in zirconium phosphates and bismuthates were synthesized, and their crystal structures and some properties were clarified. The hydrothermal reaction using ZrOCl 2 ·8H 2 O as one of the starting compounds produced seven types of new zirconium phosphates, and one of them exhibited unique ion-exchange property. New bismuthates with Bi 5+ could be synthesized by hydrothermal reaction by using NaBiO 3 ·nH 2 O as one of the starting compounds, and some of them were superconductors or photocatalyst under visible light irradiation.","PeriodicalId":16331,"journal":{"name":"Journal of ion exchange","volume":"6 1","pages":"29-36"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89947889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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