Sodium-Zeolite (NaZ) softening is an ion exchange-based process designed to remove hardness (calcium and magnesium) from raw water. NaZ softening will remove other soluble cation species such as iron and copper and will act as a filter for small suspended solids.
For preparation of Ag -modified zeolite (Z-Ag), Na form of zeolite was added to a volume of 0.03 M Ag solution (as nitrate salt) corresponding to a solid/liquid ratio of 1/100. The ion exchange process has been conducted under magnetic stirring, at room temperature, for 8 h.
Magnetic Ion Exchange Resins, Hydrous Ion Oxide Particles, Granular Ferric Hydroxide, Activated Alumina, Sulfur Modified Iron, and Iron Oxide-Coated Microsand Shahnawaz Sinha1, Gary Amy1, Yeomin Yoon 2, Namguk Her3† 1Water Desalination and Reuse Center, King Abdullah University of Science and Technology, Thuwal, 23955-6000, Saudi Arabia
Jan 01, 1970Benzoylformic and alpha-acetamidoacrylic acid hydrogenation, using modified ion exchange resin- palladium catalysts Publication Date Jan 01, 1970
Macroreticular ion exchange resin catalysts were prepared by suspension polymerization, and then modified by alkylmercaptoamines. The modified catalysts were characterized by N 2 adsorption/desorption measurements, scanning electron microscopy and differential scanning calorimetry. Key factors such as the mercaptan content, the degree of
ion exchange resins. water bath. reaction solution. reactor. Put 4g dry IERs in the reactor → Add 5 mL catalyst solution to the reactor (the solution was absorbed . by IERs) → Add 3 drops antifoam to the reactor → Put the reactor in 70C water bath → Add 50 wt%
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Accumulation of Dialkylphosphorus Anions from Water by Ion Exchange on Modified XAD-4 Resin Zlatko Frbe. Institute for Medical Research and Occupational Health, University of Zagreb, 41000 Zagreb, Yugoslavia. Search for other works by this author on Oxford Academic. PubMed.
Modified clinoptilolite as an ion exchange material Abstract. An ion exchange material for the removal of radioisotope cations such as the cations of caesium and strontium from an aqueous environment containing the radioisotope cation comprises a modified clinoptilolite produced by treating a natural clinoptilolite with sodium hydroxide at a concentration of approximately 2M or with
Ion exchange chromatography is a technique that is used analytically unlike some other separation methods that are used more for preparative purposes. Example shows a series of proteins separated and eluted off the column with
This article discusses the effectiveness of Prussian Blue (PB) or K xFe A x z thin films as a model to demonstrate the concept of reversibility of electron and ion exchange processes. PB structure is modified via exchanging the Fe A (the counter ion) with other metal ions that have electrochemically active or inactive redox behavior.
Goals / Objectives A new generation of highly effective and environmentally friendly protective coating formulations will be developed which make value-added use of chemically modified (ion-exchange) cellulose for corrosion resistance.
electrodeionization (EDI). EDI combines ion-exchange resins, ion-exchange membranes, and a direct (DC) electric field. Basically, EDI is an elec-trodialysis (ED) process modified by the addition of ion-exchange resin. When EDI is used for the pro-duction of high purity water, the ion-exchange resin beads enhance mass transfer, facilitate water
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The monodisperse, uniform sized beads of Lewatit MonoPlus TP 260 are mechanically and osmotically more stable than ion exchange resin beds with heterodisperse bead size distribution. Additionally they offer superior kinetic behavior which leads to faster uptake of cations and a better utilization of capacity.
ion exchange resin a high-molecular-weight insoluble polymer of simple organic compounds capable of exchanging its attached ions for other ions in the surrounding medium; Hydro PLIOLITE WL modified acrylate copolymer is a new resin technology for wet-look sealers. Resins suppliers directory.
Handling Columns. The column used to separate ions has a packing material modified with ion-exchange groups as a stationary phase. Therefore, it has a higher hydrophilicity than an ODS column used for reversed-phase analysis, but with repeated analyses, hydrophobic substances in analytical samples accumulate in the column, which can sometimes have undesirable effects.
View This Abstract Online; Protein adsorption and transport in dextran-modified ion-exchange media. III. Effects of resin charge density and dextran content on adsorption and intraparticle uptake.
Protein Purification by Ion Exchange Chromatography Column Chromatography Ion Exchange Chromatography Uses a solid matrix with either a positive or negative charge Separation is based on an equilibrium of the molecules adsorbed to the exchanger versus the elution solvent Changing the ionic strength or pH of the solvent allows separation of molecules with small differences in charge Two
HPLC columns were packed with this film-modified ODS and the ion exchange selectivity of Nafion was studied. A homologous series of organic cations was used to probe the ion exchange properties of Nafion. These studies show that Nafion has remarkable affinity for hydrophobic cations.
ZSM-5 zeolites modified by conventional and solid-state ion-exchange were characterizedby X-ray diffraction, BET measurements, derivatography, IR spectroscopy in the framework vibration range and acidity measurements with pyridine as probe.
modified organic polymer resins, modified silica gels, inorganic salts, glasses, zeolites, metal oxides, and cellulose derivatives . The most commonly used resins are the silica gels and polymer resins. As the sample is injected onto the column, the two different analytes briefly displace the eluent as the counterion to the charged resin.
173.25 Ion-exchange resins. Ion-exchange resins may be safely used in the treatment of food under the following prescribed conditions (a) The ion-exchange resins are pre-pared in appropriate physical form, and consist of one or more of the following (1) Sulfonated copolymer of styrene and divinylbenzene. (2) Sulfonated anthracite coal meet-
Ion exchange of MHTs with chloride in simulated concrete pore solution Ion exchange of MHTs with chloride was carried out in 0.1 M NaOH solution simulating the alkaline pore liquid of concrete .
The membrane ion exchange capacity, membrane potential, transport number and selectivity were improved initially by an increase of SiO2 nanoparticles concentration up to 1%wt in prepared membranes and then showed a decreasing trend with a further increase in additive ratio from 1 to 4%wt.