Journal of ion exchange最新文献_第4页

Adsorption Behavior of Sr and Ba Using TDS-Impregnated Microporous Silica-Based Adsorbents in Nitric Acid Solution tds浸渍硅基微孔吸附剂在硝酸溶液中的吸附行为

Journal of ion exchange Pub Date : 2022-01-01 DOI: 10.5182/jaie.33.8

Taiga Kawamura, T. Kudo, T. Ito, Hao Wu, Seongyun Kim

{"title":"Adsorption Behavior of Sr and Ba Using TDS-Impregnated Microporous Silica-Based Adsorbents in Nitric Acid Solution","authors":"Taiga Kawamura, T. Kudo, T. Ito, Hao Wu, Seongyun Kim","doi":"10.5182/jaie.33.8","DOIUrl":"https://doi.org/10.5182/jaie.33.8","url":null,"abstract":"Silica-based adsorbents impregnated tetra-n-butyl thiuram disulfide (TBTDS) or tetrakis (2-ethylhexyl) thiuram disulfide (T(2EH)TDS) as extractants on a macroporous silica/polymer composite support (SiO2-P) were prepared to separate barium (Ba) ions from strontium (Sr) ions present in mixed solutions. The Ba and Sr ion adsorption behaviors of each adsorbent were investigating by varying acid concentration, contact time, temperature, and metal concentrations in solution using the batch method. The Ba and Sr adsorption affinities depended on nitric acid concentration, and the difference in distribution coefficient (Kd) between the two ions was maximum in 1 M HNO3. Furthermore, results indicated that the adsorption reaction starts several hours after the initial solution–adsorbent contact and reaches equilibrium within 4–10 hours. The dependence for thermal for adsorption indicated to be spontaneous processes. The adsorption mechanisms were investigated by applying two isotherm models. The shapes of the isotherms were different between the TBTDS adsorbent and the T(2EH)TDS adsorbents. The isotherm for the two T(2EH)TDS adsorbents were well fitted by the Langmuir model, but that for TBTDS was S-shaped and more metal ions were adsorbed than the other adsorbents. These results suggest that the Ba and Sr ions could be separated from each other via the batch method using these adsorbents.","PeriodicalId":16331,"journal":{"name":"Journal of ion exchange","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82123263","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}

引用次数: 0

Adsorption Behaviors of Palladium(II) in Simulated High-Level Liquid Waste Using 2,2’-[(2-ethylhexyl)imino]bis[N,N-bis(2-ethylhexyl)acetamide]-impregnated Adsorbent 2,2′-[(2-乙基己基)亚胺]双[N,N-双(2-乙基己基)乙酰胺]浸渍吸附剂对模拟高放废液中钯(II)的吸附行为

Journal of ion exchange Pub Date : 2021-01-01 DOI: 10.5182/JAIE.32.8

Hao Wu, M. Kubota, N. Osawa, Seongyun Kim

{"title":"Adsorption Behaviors of Palladium(II) in Simulated High-Level Liquid Waste Using 2,2’-[(2-ethylhexyl)imino]bis[N,N-bis(2-ethylhexyl)acetamide]-impregnated Adsorbent","authors":"Hao Wu, M. Kubota, N. Osawa, Seongyun Kim","doi":"10.5182/JAIE.32.8","DOIUrl":"https://doi.org/10.5182/JAIE.32.8","url":null,"abstract":"A hybrid donor compound 2,2’-[(2-ethylhexyl)imino]bis[N,N-bis(2-ethylhexyl)acetamide] (DAMIA-EH) impregnated silicabased adsorbent [(DAMIA-EH+1-dodecanol)/SiO2-P] was prepared. Its adsorption performance toward Pd(II) in nitric acid solution was investigated by examining the effect of contact time, temperature etc. It was found that the adsorption rate of Pd(II) was fairly fast and can reach a constant state within only 10 min. (DAMIA-EH+1-dodecanol)/SiO2-P exhibited an excellent recognition ability toward Pd(II) than other 14 types of co-existing metal ions and could maintain this selectivity when the concentration of HNO3 varied from 0.5 to 5 M. On the other hand, the maximum adsorption amount of Pd(II) was calculated to be as high as 0.440 mmol/g when [HNO3] = 2 M. Moreover, with increasing the temperature in solution, the uptake ratio of Pd(II) slightly decreased, it still exhibited a dominant selectivity toward Pd(II) in a wide temperature range from 288 to 323 K. The fitted thermodynamic parameters revealed that the adsorption process of Pd(II) was exothermic in nature and happened spontaneously.","PeriodicalId":16331,"journal":{"name":"Journal of ion exchange","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89418203","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}

引用次数: 1

Study on New Metal Ion Separation Materials using Solvent Extraction Reagent 新型溶剂萃取金属离子分离材料的研究

Journal of ion exchange Pub Date : 2021-01-01 DOI: 10.5182/jaie.32.25

H. Kokusen

{"title":"Study on New Metal Ion Separation Materials using Solvent Extraction Reagent","authors":"H. Kokusen","doi":"10.5182/jaie.32.25","DOIUrl":"https://doi.org/10.5182/jaie.32.25","url":null,"abstract":"For the purpose of efficient separation of metal ions dissolved in aqueous solutions, various separation materials have been synthesized and investigated their selectivity. For solvent extraction, negatively charged multidentate ligands were synthesized and their separation behavior was researched. In order to improve the selectivity of metal ions in aqueous solution, solvent extraction system was added octadecyl surface-modified silica gel (ODS-Silica). And also investigated the separation and the extraction behavior of ODS-Silica loaded with the solvent extraction reagent. In the system using negative divalent hexadentate reagent (H 2 Clbbpen) as the solvent extraction reagent, the extractability and selectivity were improved in both systems. TTA and Dithizone were selected as solvent extraction reagents to research the adsorption and separation of transition metal ions and noble metals, respectively. As an inexpensive separation material, banana fiber was focused and examined the selectivity of natural or chelated fiber. Banana fiber was chemically bonded with several Schiff base derivatives was found to be able to adsorption transition metal ions, but the selectivity and adsorption capacity were low. Banana fiber showed the ability to collect cesium and strontium, but its low heat resistance made it difficult to use. In this paper, the results of investigations on the adsorption capacity and selectivity of each separation material were described.","PeriodicalId":16331,"journal":{"name":"Journal of ion exchange","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86809963","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}

引用次数: 0

Contribution to the Academic Standardization and Globalization of the Japan Ion Exchange Society 对日本离子交换学会学术标准化与全球化的贡献

Journal of ion exchange Pub Date : 2021-01-01 DOI: 10.5182/jaie.32.47

S. Shimazu

引用次数: 0

Studies on Selective Separation of Metal Ions with Ion Exchange Materials by Immobilizing Extractant 固定化萃取剂与离子交换材料选择性分离金属离子的研究

Journal of ion exchange Pub Date : 2021-01-01 DOI: 10.5182/JAIE.32.1

S. Nishihama

{"title":"Studies on Selective Separation of Metal Ions with Ion Exchange Materials by Immobilizing Extractant","authors":"S. Nishihama","doi":"10.5182/JAIE.32.1","DOIUrl":"https://doi.org/10.5182/JAIE.32.1","url":null,"abstract":"Ion exchange materials of environmentally friendly having high selectivity for metal ions have been investigated, as such (1) preparation of coated solvent impregnated resin, to prevent from leakage of extractant, and its application to selective separation of metal ions and (2) novel ion exchange material based on photo-swing adsorption and its application to adsorptive separation of rare earth metals. The leakage of the extractant from the solvent impregnated resin, during operation, can be successfully suppressed by coating the solvent impregnated resin by cross-linked water-soluble polymer, although adsorption capacity is slightly decreased. Selective separation of rare earth metals can be achieved with column mode operation using the coated solvent impregnated resin. Novel photo-swing ion exchange material is also developed to decrease in the amount of eluent solution. Extractant and carbon nanotube, as molecular heater, are immobilized on thermosensitive polymer. The adsorption amount can be controlled by photo-irradiation, since phase transition of the thermosensitive polymer is occurred by the photo-irradiation. The difference in the adsorption amount, with and without photo-irradiation, can be increased by decrease in the cross-linking, although the immobilization of the carbon nanotube becomes difficult. The immobilization of the carbon nanotube can be improved by introducing pyrene group on the ion exchange material. Separation ability of several combinations of rare earth metals is increased by photo-irradiation.","PeriodicalId":16331,"journal":{"name":"Journal of ion exchange","volume":"69 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77481149","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}

引用次数: 0

Sr Adsorption Behavior of Potassium Dititanate in Contaminated Water with Salinity 二钛酸钾在含盐污染水中对锶的吸附行为

Journal of ion exchange Pub Date : 2021-01-01 DOI: 10.5182/JAIE.32.15

K. Mori, T. Shinohara, H. Mimura, Taiji Chida, Y. Niibori

引用次数: 0

Synthesis and Application of Monolithic Ion Exchange Resin 整体式离子交换树脂的合成与应用

Journal of ion exchange Pub Date : 2021-01-01 DOI: 10.5182/jaie.32.33

H. Takada

{"title":"Synthesis and Application of Monolithic Ion Exchange Resin","authors":"H. Takada","doi":"10.5182/jaie.32.33","DOIUrl":"https://doi.org/10.5182/jaie.32.33","url":null,"abstract":"We have developed a new type monolithic ion exchange resin which has a co-continuous porous structure, and we have been applying it for water treatment and for synthetic catalyst use. The pore structure was obtained by a two-step polymerization process. In the first step, an open-celled porous styrene-divinylbenzene copolymer was synthesized by preparation of water-in-oil (W/O) emulsion followed by polymerization. In the second step, the obtained copolymer was soaked and polymerized in a solution containing styrene, divinylbenzene, and a polymeric initiator. In order to obtain the monolithic ion exchange resin, functional groups, such as sulfonic acid and trimethylammonium, were introduced into the copolymer. The ion exchange capacity of both monolithic cation exchange resin (CEMR) and anion exchange resin (AEMR) were over 4 meq/g. The ion exchange band length of the monolithic ion exchange resins were approximately 10 times shorter than that of conventional ion exchange resin columns. Pd-supported AEMR (Pd/AEMR) was able to decompose hydrogen peroxide generated in the ultrapure water production line efficiently, and the treatment flow rate could be raised to approximately 10 times that of the Pd-supported cation exchange resin (Pd/CEMR). Pd/AEMR showed catalytic activity in hydrogenation reactions and coupling reactions, and in the continuous flow hydrogenation reaction using Pd/AEMR, higher yield was obtained in a shorter time than in batch reaction.","PeriodicalId":16331,"journal":{"name":"Journal of ion exchange","volume":"59 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84861625","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}

引用次数: 0

Elution Behavior of Carbohydrates for Core-Shell Ion-Exchange Resins with Different Degrees of Cross-Linking in Porous Shell Layer 不同交联度核-壳离子交换树脂对碳水化合物在多孔壳层中的洗脱行为

Journal of ion exchange Pub Date : 2021-01-01 DOI: 10.5182/jaie.32.40

S. Mitomo, Y. Negishi, T. Mutai, Y. Inoue

{"title":"Elution Behavior of Carbohydrates for Core-Shell Ion-Exchange Resins with Different Degrees of Cross-Linking in Porous Shell Layer","authors":"S. Mitomo, Y. Negishi, T. Mutai, Y. Inoue","doi":"10.5182/jaie.32.40","DOIUrl":"https://doi.org/10.5182/jaie.32.40","url":null,"abstract":"resin, suspension polymerization The St-80 resin high functionality, of the fully porous resin. carbohydrate analysis by HPLC using St-80 a Abstract A novel core-shell ion-exchange resin (St-80) having a 20:80 weight ratio of the monomer for the core and the shell was prepared for use in high-performance liquid chromatography (HPLC), and the effect of the degree of cross-linking (10–55%) of the porous shell on the separation of carbohydrates was examined. A mixed aqueous sample of inositol, glucose, fructose, and sucrose was reasonably separated under strong alkaline conditions (0.10 and 0.15 mol/L NaOH eluent) at flow rates of 0.3–0.7 mL/min. As the degree of cross-linking in the shell portion increased, the retention time of sucrose, which had the longest elution time, decreased. Meanwhile, the theoretical plate number nearly doubled. The retention times obtained for the high degrees of cross-linking (40% and 55%) in the porous shell were shorter than that of the fully porous resin. The theoretical plate number observed for these resins provided excellent resolution, similar to that of the fully porous resin.","PeriodicalId":16331,"journal":{"name":"Journal of ion exchange","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80029467","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}

引用次数: 1

Separation of Cobalt and Nickel Ions Using Electrodialysis Reversal in the Presence of Ethylene Diamine Tetraacetic Acid 乙二胺四乙酸存在下电渗析反转分离钴镍离子

Journal of ion exchange Pub Date : 2020-01-01 DOI: 10.5182/jaie.31.9

Hiroshi Takahashi, Kasumi Takahashi, K. Fujita, T. Nishide

引用次数: 0

Connection between Ion Exchange Technology and Me 离子交换技术与Me的关系

Journal of ion exchange Pub Date : 2020-01-01 DOI: 10.5182/jaie.31.37

T. Aritomi

引用次数: 0