23 results on '"cation resin"'
Search Results
2. Intensification of ion exchange desorption of thiamine diphosphate by low-powered ultrasound.
- Author
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Pinchukova, Natalia A., Voloshko, Alexander Y., Merko, Maria A., Bondarenko, Yana A., and Chebanov, Valentin A.
- Subjects
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ION exchange resins , *THIAMIN pyrophosphate , *DESORPTION , *ULTRASONICS , *CATIONS - Abstract
The process of ultrasound-assisted ion-exchange desorption of cocarboxylase (thiamine diphosphate (TDP)) from a strong acidic cation resin was studied. Kinetics studies revealed that ultrasound accelerates TDP desorption by 3 times. The optimal desorption parameters, viz . US power input, sonication time, eluent/resin ratio and the eluent (ammonium acetate buffer) concentration were established which were 15 mW/cm 3 , 20 min, 1:1 and 1 M, respectively. The resin stability studies showed that the optimal ultrasonic power was less by the order than the resin degradation threshold which ensures durable and efficient resin exploitation during production. The resin sorption capacity remained unchanged even after 20 cycles of TDP sorption, ultrasonic desorption and resin regeneration. The recovery ratio of TDP was shown to increase non-linearly with decreasing the resin saturation factor, which can be attributed to diffusion limitations occurring during desorption. The optimal resin loading corresponding to more than 90 per cent of TDP recovery was found to be at the level of 10 per cent of the maximal sorption capacity. The study revealed 4-5-fold increase in concentrations of the recovered solutions, which together with process times shortening should result in considerable energy saving in downstream operations on production scale. [ABSTRACT FROM AUTHOR]
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- 2018
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3. Method of Preparation for High-Purity Nanocrystalline Anhydrous Cesium Perrhenate.
- Author
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Leszczyńska-Sejda, Katarzyna, Benke, Grzegorz, Ciszewski, Mateusz, Malarz, Joanna, and Drzazga, Michał
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CESIUM ions ,NANOCRYSTALS ,AQUEOUS solutions ,SORPTION ,CRYSTALLIZATION - Abstract
This paper is devoted to the preparation of high-purity anhydrous nanocrystalline cesium perrhenate, which is applied in catalyst preparation. It was found that anhydrous cesium perrhenate with a crystal size <45 nm can be obtained using cesium ion sorption and elution using aqueous solutions of perrhenic acid with subsequent crystallisation, purification, and drying. The following composition of the as-obtained product was reported: 34.7% Cs; 48.6% Re and <2 ppm Bi; <3 ppm Zn; <2 ppm As; <10 ppm Ni; < 3 ppm Mg; <5 ppm Cu; <5 ppm Mo; <5 ppm Pb; <10 ppm K; <2 ppm Na; <5 ppm Ca; <3 ppm Fe. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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4. The Separation Of Component Ion Exchange Resins of Narrow Size Grading in Mixed Bed Exchangers, and Evaluation of Performance
- Author
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Golden, L. S., Irving, James, and Slater, M. J., editor
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- 1992
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5. Technical Design Calculations
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Simon, George P. and Simon, George P.
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- 1991
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6. Poisoning by Agricultural Chemicals — Organophosphates and Paraquat
- Author
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Koyama, K., Yamashita, M., Takeda, M., and Vincent, Jean Louis, editor
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- 1990
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7. Method of Preparation for High-Purity Nanocrystalline Anhydrous Cesium Perrhenate
- Author
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Katarzyna Leszczyńska-Sejda, Grzegorz Benke, Mateusz Ciszewski, Joanna Malarz, and Michał Drzazga
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cesium ,caesium ,rhenium ,perrhenate ,cation resin ,Mining engineering. Metallurgy ,TN1-997 - Abstract
This paper is devoted to the preparation of high-purity anhydrous nanocrystalline cesium perrhenate, which is applied in catalyst preparation. It was found that anhydrous cesium perrhenate with a crystal size
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- 2017
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- View/download PDF
8. Parametric experiments and kinetic studies on the removal of nickel using strong acid cation exchange resin 001 × 7.
- Author
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Rajamohan, Natarajan
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NICKEL ,TRANSITION metals ,CHEMICAL kinetics ,ION exchange resins ,FOURIER transform infrared spectroscopy - Abstract
In this research study, the feasibility of removal of nickel ions was evaluated by utilizing a strong acid cation exchange resin 001 × 7. Parametric experiments were performed in a shaker in order to determine the effect of process variables like pH, resin dose, initial metal concentration, agitation speed and temperature on the metal removal efficiency and uptake. It was observed that 88% of metal removal was achieved at optimal pH 5.0 at an initial metal concentration of 100 mg/L. With higher resin dose, the removal efficiency increased and higher concentrations of metal required more equilibrium time for maximum removal. The experimental data were fitted to two kinetic models and pseudo-first-order model was found to fit well based on the values of correlation coefficient. The pseudo-first-order rate constant was found to be 2.1 × 10−4 g/mg min for an initial nickel concentration of 100 mg/L. An inverse relation was found to exist between pseudo-first-order rate constant and initial metal concentration. The initial exchange rate and rate constant of the pseudo-second-order model were also evaluated. Fourier transform infrared spectroscopy studies were performed to verify the ion exchange mechanism. [ABSTRACT FROM AUTHOR]
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- 2015
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9. Evaluation of new ion exchange resins for hardness removal from boiler feedwater
- Author
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Janson, Arnold, Minier-Matar, Joel, Al-Shamari, Eman, Hussain, Altaf, Sharma, Ramesh, Rowley, David, and Adham, Samer
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- 2018
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10. Synthesis of a Green Fuel Additive Over Cation Resins.
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Zheng, Y., Tang, Q., Wang, T., Liao, Y., and Wang, J.
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CATIONS , *ADSORPTION (Chemistry) , *POLYOXYMETHYLENE , *SURFACE chemistry , *GUMS & resins - Abstract
The synthesis of polyoxymethylene dimethyl ethers (PODEn), being green diesel fuel additives, from dimethoxymethane (DMM) and paraformaldehyde over three different cation resins, namely NKC-9, D001-CC, and D72, in a stirred-autoclave reactor was investigated. The pore size distribution and surface area were measured with nitrogen adsorption-desorption. NKC-9 had a larger exchange capacity, better developed porosity structure, and higher reaction activity than D001-CC and D72. The effects of reaction temperature, DMM/CH2O molar ratio, reaction time, and catalyst loading were studied with NKC-9. A possible mechanism was explored to describe the bond reorganizations during the reactions. [ABSTRACT FROM AUTHOR]
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- 2013
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11. Improvement of epothilone B production by in situ removal of ammonium using cation exchange resin in Sorangium cellulosum culture
- Author
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Park, Sang Woo, Han, Se Jong, Kim, Dong-Shik, and Sim, Sang Jun
- Subjects
- *
CATIONS , *IONS , *MONOVALENT cations , *ANTINEOPLASTIC agents - Abstract
Abstract: A cation exchange resin was added at different stages in the growth of Sorangium cellulosum cultures to remove excess ammonium, which has a negative influence on the production of the anticancer agent, epothilone. When 8gL−1 of cation exchange resin were added at the mid-death phase, the ammonium removal reached 83% and the maximum production of epothilone was 14.3mgL−1, which was 2.6 times greater than that of the control culture. [Copyright &y& Elsevier]
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- 2007
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12. Single-step recovery of ephedrine hydrochloride from raw materials using expanded bed adsorption.
- Author
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Chen, Wei-Dong, Wang, Yan-Dong, Zha, Li-hang, Ma, Guang-Hui, and Su, Zhi-Guo
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EPHEDRINE ,BRONCHODILATOR agents ,PROPANOLAMINES ,CATIONS ,HERBS ,ADSORPTION (Chemistry) - Abstract
Expanded bed adsorption, using a cation resin 001×7 Styrene-DVB, was used to recover and purify ephedrine hydrochloride from a powdered herb. The axial liquid-phase dispersion coefficient was about 10
-5 m2 s-1 and the recovery yield and purification reached 86% and 22, respectively. Compared with using conventional extraction with dimethylbenzene, this method is safer and also more efficient. [ABSTRACT FROM AUTHOR]- Published
- 2004
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13. Anion Resin Kinetics at High Flow Rates
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Emmett, J. R., Liberti, Lorenzo, editor, and Millar, John R., editor
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- 1985
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14. Transport through Deep Aquifers of Transuranic Nuclides Leached from Vitrified High-Level Wastes
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Avogadro, A., Murray, C. N., De Plano, A., Lewins, Jeffery, editor, Becker, Martin, editor, and Northrup, Clyde J. M., Jr., editor
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- 1980
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15. Search For Environmental Or Endogenous Neurotoxins Related To MPTP
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Markey, S. P., Ikeda, H., Yang, S.-C., Markey, C. J., Marini, A. M., Johannessen, J. N., Hefti, Franz, editor, and Weiner, William J., editor
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- 1988
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16. Research and Development on BWR-System Decontamination in Sweden
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Arvesen, Jan, Hermansson, Hans-Peter, Gustafsson, Ramond, and Osterhout, Marilyn M., editor
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- 1980
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17. Kinetic Study of Palm Fatty Acid Distillate Esterification with Glycerol over Strong Acidic Cation Exchanger Tulsion 42SM
- Author
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Rochmadi Rochmadi, Hanifrahmawan Sudibyo, and Mohammad Fahrurrozi
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Reactions on surfaces ,chemistry.chemical_classification ,Reaction mechanism ,Chemistry ,Xylene ,Langmuir-Hinshelwood ,General Engineering ,Side reaction ,cation resin ,Fatty acid ,Monoglyceride ,esterification ,Eley-Rideal ,Catalysis ,Solvent ,chemistry.chemical_compound ,lcsh:TA1-2040 ,Reflux system ,Organic chemistry ,lcsh:Engineering (General). Civil engineering (General) - Abstract
Palm Fatty Acid Distillate (PFAD) is a byproduct of CPO production. PFAD conversion into monoglyceride would give significant economic added value to it. With free fatty acid as the major component which composes the PFAD, then the esterification process was the right choice. Utilization of strong acidic cation resin as a catalyst is interesting. The catalyst could be easily separated physically. Natural esterification reaction would run reversibly so that the reflux system would be created to remove water. Reflux system used xylene as the solvent. To find the optimum condition for reaction parameters, reaction temperature, mole ratio of PFAD-glycerol, and catalyst loading were varied. Two heterogeneous reaction mechanisms, Langmuir – Hinshelwood and Eley – Rideal model, were tried to fit with the experimental data which resulted in the first model fitted the experimental data better than the second model. The reaction mechanism would involve the side reaction of diglyceride and triglyceride formation.
- Published
- 2017
18. THE PROTECTION OF NATURAL RESERVOIRS FROM POWER PLANT ACCIDENTAL POLLUTIONBY COPPER IONS
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катионит ,тяжелые металлы ,ионный обмен ,регенерация ионитов ,водоциркуляционные системы ,cation resin ,heavy metals ,ion exchange ,ion-exchanger regeneration ,water circulating systems ,катіоніт ,важкі метали ,йонний обмін ,регенерація йонітів ,водоциркуляційні системи - Abstract
Наведено результати досліджень зі стабілізаційної обробки води для підживлення водооборотних систем охолодження йонообмінним методом. Вивчено процеси пом’якшення води на сильно- та слабокислотних катіонітах у присутності йонів міді. Визначено залежність ефективності очищення води від йонів міді та її пом’якшення в залежності від форми йоніту та витрати води. Показано, що застосування слабокислотного катіоніту в кислій формі забезпечує практично повну декарбонізацію води при частковому її підкисленні. Застосування йонітів у сольовій формі дозволяє нейтралізувати воду при ефективному її пом’якшенні та очищенні від йонів міді. Вивчено процеси регенерації катіонітів кислими та сольовими розчинами. Показано, що підживлення систем охолодження пом’якшеною водою дозволить впровадити безстічні водоциркуляційні системи охолодження, що забезпечить надійний захист водойм від забруднення йонами зі міді стічних вод електростанцій., Приведены результаты исследований по стабилизационной обработке воды для подпитки водооборотных систем охлаждения ионообменным методом. Изучены процессы смягчения воды на сильно- и слабокислотных катионитах в присутствии ионов меди. Определена зависимость эффективности очистки воды от меди и ее смягчения в зависимости от формы ионита и расхода воды. Показано, что применение слабокислотных катионитов в кислой форме обеспечивает практически полную декарбонизацию воды при частичном ее подкислении. Применение ионитов и в солевой форме позволяет нейтрализовать воду при эффективном ее смягчении и очистке от ионов меди. Изучены процессы регенерации катионитов кислыми и солевыми растворами. Показано, что подпитка систем охлаждения смягченной водой позволит внедрить бессточные циркуляционные системы охлаждения, что обеспечит надежную защиту водоемов от загрязнения ионами меди со сточных вод электростанций., The results of the water stabilization treatment studies to feed the cooling water circulation systems by ion exchange method are reported. The processes of the water softener on strongly and weakly acidic cation resins in the presence of copper ions are studied. The relation of the water purification efficiency from copper and its softening depending on the form of the ion-exchanger and water consumption was determined. It is shown that the use of weakly acidic cation resin in the acid form provides nearly complete decarbonization of water by partial acidification. The use of ion exchangers in salt form allowsto neutralize the waterwith effective mitigation and clean-up of the copper ions. The processes of cation resin regeneration by acidic and saline solutions were analyzed. It is shown that the make-up cooling systems by softened water will introduce stagnant circulation cooling system that will provide reliable protection of waters from pollution by power plan wastewater copper ions.
- Published
- 2016
19. Determination of an engineering model for exchange kinetics of strong acid cation resin for the ion exchange of sodium chloride and sodium bicarbonate solutions
- Author
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Millar, Graeme, Miller, Gavin, Couperthwaite, Sara, Dalzell, Scott, Macfarlane, David, Millar, Graeme, Miller, Gavin, Couperthwaite, Sara, Dalzell, Scott, and Macfarlane, David
- Abstract
Highlights - The BWS kinetic expression was found to be an optimal engineering model for sodium exchange with SAC resin. - Anion identity influenced cation exchange kinetics with SAC resins. - Sodium ion exchange rates depended upon resin/liquid ratio. - Rate limiting step in exchange kinetics changed with time and resin/liquid ratio. Abstract This study identified an appropriate engineering model which described the exchange kinetics of sodium ions with a strong acid cation resin. Synthetic resins have potential application for the demineralization of coal seam (CS) water prior to beneficial reuse. However, there is limited data regarding the kinetic behaviour of strong acid cation (SAC) resin for the removal of sodium ions, the most prevalent ions in the water collected from coal seams (produced water) during natural gas extraction. In particular, exchange kinetics need to be understood in relation to estimating how full scale columns of resin may perform. Kinetic analysis revealed that the exchange of sodium ions from both sodium chloride and sodium bicarbonate solutions with SAC resin reached equilibrium within minutes at ambient temperature. Optimal simulation of the kinetic data for both chloride and bicarbonate containing solutions was achieved by application of the Brouers, Weron and Sotolongo (BWS) fractal equation; and this should be used as the basis for development of an engineering model. The model parameters varied depending upon the ratio of resin to liquid employed in the tests, with rates showing substantial enhancement once an excess of resin exchange sites were present. The exchange process was apparently controlled in part by intraparticle diffusion, with three phases inferred for sodium chloride solutions and two for sodium bicarbonate solutions. Other rate limiting phenomena such as film diffusion appeared to play a role under certain conditions.
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- 2017
20. Accurate Measurement of Rare Earth Elements by ICP-MS after Ion-Exchange Separation: Application to Ultra-Depleted Samples
- Author
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Sarah Bureau, Christian Picard, Catherine Chauvel, Marc Ulrich, Institut des Sciences de la Terre ( ISTerre ), Université Grenoble Alpes ( UGA ) -Centre National de la Recherche Scientifique ( CNRS ) -Université Savoie Mont Blanc ( USMB [Université de Savoie] [Université de Chambéry] ) -PRES Université de Grenoble-Institut de recherche pour le développement [IRD] : UR219-Institut national des sciences de l'Univers ( INSU - CNRS ) -Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux ( IFSTTAR ) -Université Joseph Fourier - Grenoble 1 ( UJF ), Laboratoire Chrono-environnement ( LCE ), Université Bourgogne Franche-Comté ( UBFC ) -Centre National de la Recherche Scientifique ( CNRS ) -Université de Franche-Comté ( UFC ), Institut des Sciences de la Terre (ISTerre), Université Joseph Fourier - Grenoble 1 (UJF)-Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-Institut national des sciences de l'Univers (INSU - CNRS)-Institut de recherche pour le développement [IRD] : UR219-PRES Université de Grenoble-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Laboratoire Chrono-environnement (UMR 6249) (LCE), Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Institut de physique du globe de Strasbourg (IPGS), Université de Strasbourg (UNISTRA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-PRES Université de Grenoble-Université Joseph Fourier - Grenoble 1 (UJF)-Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-Institut national des sciences de l'Univers (INSU - CNRS)-Institut de recherche pour le développement [IRD] : UR219-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry]), Laboratoire Chrono-environnement - CNRS - UFC (UMR 6249) (LCE), Laboratoire Chrono-environnement - CNRS - UBFC (UMR 6249) (LCE), Université de Franche-Comté (UFC), and Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
Accuracy and precision ,Rare earth ,cation resin ,[SDU.STU.PE]Sciences of the Universe [physics]/Earth Sciences/Petrography ,Analytical chemistry ,ultramafic rocks ,[SDU.STU]Sciences of the Universe [physics]/Earth Sciences ,Mineralogy ,[ SDU.STU.VO ] Sciences of the Universe [physics]/Earth Sciences/Volcanology ,roches ultramafiques ,010502 geochemistry & geophysics ,01 natural sciences ,ICP-MS quadripolaire ,résine cationique ,[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry ,Geochemistry and Petrology ,[SDU.STU.VO]Sciences of the Universe [physics]/Earth Sciences/Volcanology ,échange d’ions ,ion-exchange ,[ SDU.STU.MI ] Sciences of the Universe [physics]/Earth Sciences/Mineralogy ,[SDU.STU.AG]Sciences of the Universe [physics]/Earth Sciences/Applied geology ,Inductively coupled plasma mass spectrometry ,[ SDU.STU.PE ] Sciences of the Universe [physics]/Earth Sciences/Petrography ,0105 earth and related environmental sciences ,[SDU.STU.TE]Sciences of the Universe [physics]/Earth Sciences/Tectonics ,Reproducibility ,Ion exchange ,Chemistry ,010401 analytical chemistry ,Geology ,Trace element measurement ,[ SDU.STU.GC ] Sciences of the Universe [physics]/Earth Sciences/Geochemistry ,REE ,0104 chemical sciences ,quadrupole ICP-MS ,[SDU.STU.MI]Sciences of the Universe [physics]/Earth Sciences/Mineralogy - Abstract
International audience; This study reports precise and accurate data for rare earth elements (REE) measured on eight geological reference materials, five enriched in REE (BE-N, BHVO-2, BR, BR-24 and RGM-1) and three very depleted in REE (BIR-1, UB-N and DTS-2). Data were acquired by quadrupole ICP-MS after isolation of the REE using an ion-exchange chromatography procedure. All the measured REE abundances were similar within 5% (10% for the most REE-depleted sample DTS-2) to the high-quality measurements previously published in the literature. We also show that by using an internal Tm spike, the reproducibility of the data was improved to 1%.Applying this technique to the analysis of ultradepleted rock samples (sub ng g-1), we show that significant improvements were obtained relative to the routine trace element measurement method. The chondrite-normalised patterns were smooth instead of displaying irregularities. Although the classical method gives excellent results on REE-rich samples, we believe that our technique improves the precision and accuracy of measurements for highly REE-depleted rocks.; Cette étude présente des données de terres rares (REE) précises, mesurées sur huit matériaux géologiques de référence, cinq enrichis en terres rares (BE-N, BHVO-2, BR, BR-24 et RGM-1) et trois très appauvris en REE (BIR-1, UB-N et DTS-2). Les données ont été acquises par ICP-MS quadripolaire après isolement des terres rares par l’utilisation d’une procédure chromatographie échangeuse d’ions. Toutes les abondances mesurées de terres rares ont été similaires, à environ 5% près (10% pour l’échantillon le plus appauvri en REE, DTS-2), aux mesures de haute qualité issues de la littérature.Nous montrons également que l’utilisation d’un ajout («spike») interne de Tm a permit d’améliorer la reproductibilité des données d’environ 1%. Enappliquant cette technique à l’analyse d’échantillons de roches ultra-appauvris (au niveau du ng g-1), nous montrons que des améliorations significatives ont été obtenues par rapport à la méthode de routine de mesure des éléments traces. Les spectres normalisés aux chondrites sont lisses au lieu d’afficher des irrégularités. Bien que la méthode classique donne d’excellents résultats pour des échantillons riches en terres rares, nous croyons que notre technique améliore la précision et l’exactitude des mesures pour les roches très appauvris en terres rares.
- Published
- 2011
- Full Text
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21. The protection of natural reservoirs from power plant accidental pollutionby copper ions
- Author
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Trohymenko, G. G. and Gomelya, M. D.
- Subjects
водоциркуляційні системи ,регенерация ионитов ,катіоніт ,cation resin ,регенерація йонітів ,ion exchange ,катионит ,628.5432(088.8) [628.33] ,тяжелые металлы ,йонний обмін ,важкі метали ,водоциркуляционные системы ,water circulating systems ,ионный обмен ,heavy metals ,ion-exchanger regeneration - Abstract
Наведено результати досліджень зі стабілізаційної обробки води для підживлення водооборотних систем охолодження йонообмінним методом. Вивчено процеси пом’якшення води на сильно- та слабокислотних катіонітах у присутності йонів міді. Визначено залежність ефективності очищення води від йонів міді та її пом’якшення в залежності від форми йоніту та витрати води. Показано, що застосування слабокислотного катіоніту в кислій формі забезпечує практично повну декарбонізацію води при частковому її підкисленні. Застосування йонітів у сольовій формі дозволяє нейтралізувати воду при ефективному її пом’якшенні та очищенні від йонів міді. Вивчено процеси регенерації катіонітів кислими та сольовими розчинами. Показано, що підживлення систем охолодження пом’якшеною водою дозволить впровадити безстічні водоциркуляційні системи охолодження, що забезпечить надійний захист водойм від забруднення йонами зі міді стічних вод електростанцій. The results of the water stabilization treatment studies to feed the cooling water circulation systems by ion exchange method are reported. The processes of the water softener on strongly and weakly acidic cation resins in the presence of copper ions are studied. The relation of the water purification efficiency from copper and its softening depending on the form of the ion-exchanger and water consumption was determined. It is shown that the use of weakly acidic cation resin in the acid form provides nearly complete decarbonization of water by partial acidification. The use of ion exchangers in salt form allowsto neutralize the waterwith effective mitigation and clean-up of the copper ions. The processes of cation resin regeneration by acidic and saline solutions were analyzed. It is shown that the make-up cooling systems by softened water will introduce stagnant circulation cooling system that will provide reliable protection of waters from pollution by power plan wastewater copper ions. Приведены результаты исследований по стабилизационной обработке воды для подпитки водооборотных систем охлаждения ионообменным методом. Изучены процессы смягчения воды на сильно- и слабокислотных катионитах в присутствии ионов меди. Определена зависимость эффективности очистки воды от меди и ее смягчения в зависимости от формы ионита и расхода воды. Показано, что применение слабокислотных катионитов в кислой форме обеспечивает практически полную декарбонизацию воды при частичном ее подкислении. Применение ионитов и в солевой форме позволяет нейтрализовать воду при эффективном ее смягчении и очистке от ионов меди. Изучены процессы регенерации катионитов кислыми и солевыми растворами. Показано, что подпитка систем охлаждения смягченной водой позволит внедрить бессточные циркуляционные системы охлаждения, что обеспечит надежную защиту водоемов от загрязнения ионами меди со сточных вод электростанций.
- Published
- 2016
22. Inverse gas chromatography study of acid-base properties of cation resin used as catalysts of Bisphenol A synthesis
- Subjects
acid-base interactions ,Bisphenol A ,catalysis ,inverse gas chromatography ,cation resin ,ionite - Abstract
The inverse gas chromatography method have been used for estimation of relative number of acid and base active centres for two type cation exchangers that are used as catalysts of Bisphenol A industrial synthesis. It was stated that after a few weeks of the continuous work of reactors filled with the catalysts, the acid-base properties of the latter have undergone significant changes. The number of acid centres decreased while the number of base centres increased. Simultaneously, the decreased of the yield of the synthesis product was observed.
- Published
- 2001
23. Accurate REE measurement by ICP-MS after ion exchange separation. Application to ultra-depleted samples
- Author
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Ulrich, Marc, Bureau, Sarah, Chauvel, Catherine, Picard, Christian, Institut des Sciences de la Terre (ISTerre), Centre National de la Recherche Scientifique (CNRS)-PRES Université de Grenoble-Université Joseph Fourier - Grenoble 1 (UJF)-Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-Institut national des sciences de l'Univers (INSU - CNRS)-Institut de recherche pour le développement [IRD] : UR219-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry]), Laboratoire Chrono-environnement - CNRS - UBFC (UMR 6249) (LCE), Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Géodynamique des Chaines Alpines (LGCA), Observatoire des Sciences de l'Univers de Grenoble (OSUG), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut des Sciences de la Terre (ISTerre), Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-PRES Université de Grenoble-Institut de recherche pour le développement [IRD] : UR219-Institut national des sciences de l'Univers (INSU - CNRS)-Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS)-PRES Université de Grenoble-Institut de recherche pour le développement [IRD] : UR219-Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR), Laboratoire Chrono-environnement - UFC (UMR 6249) (LCE), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Laboratoire de Géodynamique des Chaines Alpines ( LGCA ), Observatoire des Sciences de l'Univers de Grenoble ( OSUG ), Université Joseph Fourier - Grenoble 1 ( UJF ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National de la Recherche Scientifique ( CNRS ) -Université Grenoble Alpes ( UGA ) -Université Joseph Fourier - Grenoble 1 ( UJF ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National de la Recherche Scientifique ( CNRS ) -Université Grenoble Alpes ( UGA ) -Institut des Sciences de la Terre ( ISTerre ), Université Grenoble Alpes ( UGA ) -Centre National de la Recherche Scientifique ( CNRS ) -Université Savoie Mont Blanc ( USMB [Université de Savoie] [Université de Chambéry] ) -PRES Université de Grenoble-Institut de recherche pour le développement [IRD] : UR219-Institut national des sciences de l'Univers ( INSU - CNRS ) -Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux ( IFSTTAR ) -Université Joseph Fourier - Grenoble 1 ( UJF ) -Centre National de la Recherche Scientifique ( CNRS ) -Université Savoie Mont Blanc ( USMB [Université de Savoie] [Université de Chambéry] ) -PRES Université de Grenoble-Institut de recherche pour le développement [IRD] : UR219-Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux ( IFSTTAR ), Laboratoire Chrono-environnement ( LCE ), and Université Bourgogne Franche-Comté ( UBFC ) -Centre National de la Recherche Scientifique ( CNRS ) -Université de Franche-Comté ( UFC )
- Subjects
[ SDE.MCG ] Environmental Sciences/Global Changes ,[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry ,[SDE.MCG]Environmental Sciences/Global Changes ,cation resin ,ion-exchange ,[ SDU.STU.GC ] Sciences of the Universe [physics]/Earth Sciences/Geochemistry ,quadrupole ICP-MS ,ultramafic rocks ,REE ,ComputingMilieux_MISCELLANEOUS - Abstract
International audience
- Published
- 2012
- Full Text
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