JP2018118888A

Provided is a method capable of efficiently removing sodium from a sodium-containing glass in a relatively short time while suppressing the formation of a hardly water-soluble chloride. A …

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Investigation of fluoride and silica removal from semiconductor

Fluoride-containing wastewater was prepared by dissolving sodium fluoride (NaF), while CMP wastewater was prepared with SiO 2 (average size of 100 nm). All the chemicals, …

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Silica Removal Processes |

Where complete removal of silica is required, various combinations of reverse osmosis (RO) and/or ion exchange processes are used. ... In the chloride form, or any other …

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How would you remove sodium chloride from silica?

Well since silica don't dissolve in water but 'sodium chloride' does (cuz it's salt)...so put them in the water,..then u'll see the preciptate,..remove he preciptate then u'll get the 'sodium...

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Boiler Feedwater Treatment (Part II): Water Treatment Fundamentals

Lime is not effective in removing calcium sulfates and chlorides (permanent hardness). Soda ash is used primarily to reduce non-bicarbonate hardness (permanent hardness). The calcium …

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METHOD 3630C SILICA GEL CLEANUP

settle the silica gel and elute the methylene chloride. Add 1 to 2 cm of anhydrous sodium sulfate to the top of the silica gel.

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What is the Best Way to Remove Silica From Water?

Discover effective methods for removing silica from your water supply in our comprehensive blog. From lime softening to reverse osmosis, explore the pros …

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Preparation of SiO2 aerogel by water glass: effect of different sodium

Removal of Na+ is a very important step in the SiO2 aerogel preparation using water glass as precursor, which has a significant effect on the structure and properties of …

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Coagulation Chemistries for Silica Removal from Cooling …

improvements. In Phase III, more detailed study of process conditions for aluminum chloride coagulation was undertaken. Lime-soda water softening and the precipitation of magnesium ...

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Water Handbook

To improve magnesium reduction, which also improves silica reduction in cold process softening, sodium aluminate may be used. The sodium aluminate provides hydroxyl ion (OH-) needed for …

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DuPont™ Ion Exchange Resins Understanding Silica …

Page1of2 FormNo.45-D01099-en,Rev.2 January2020 TechFact DuPontIonExchangeResins UnderstandingSilicaRemovalbyIonExchange Colloidalvs. ReactiveSilica

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Silica Removal Processes |

Where complete removal of silica is required, various combinations of reverse osmosis (RO) and/or ion exchange processes are used. The current state-of-the-art …

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An improved method for production of silica from rice hull ash

The major impurity in these silica gels was sodium chloride trapped in the silica gel network. Washing these aquagels was found to be ineffective in removing the trapped salts. …

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Removal of 177Lu radiotherapy drugs from Public Waste streams

Methods: A modified version of a published artificial urine (500 mL) was created using urea (9.1 g) sodium chloride (6.0 g) and sodium phosphate monobasic (2.4 g). …

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(PDF) Desilication of sodium aluminate solution by …

In this work, Friedel's salt (FS: 3CaO·A12O3·CaCl2·10H2O) is proved for the first time to remove up to 95% silica from sodium aluminate solution. FS is a mineral anion exchanger belonging to the layered double hydroxides (LDHs) …

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Rapid, Selective, and Chemical-Free Removal of …

The unavoidable and detrimental formation of silica scale in engineered processes necessitates the urgent development of effective, economic, and sustainable strategies for dissolved silica removal from water. …

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Best Methods for Silica Removal from Water or …

Silica can cause major problems to industrial equipment, but luckily there are various methods to remove it from a water supply, including lime softening, ion exchange, reverse osmosis, ultrafiltration, and electrocoagulation. Let's …

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Behavior of Silica in Ion Exchange Systems

In the chloride form, or any other salt form, strong base anion resin has essentially zero preference for silica. Silica is non-ionized at typical raw water pH and can't enter the resin …

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Managing Cooling Water Systems to Prevent Silica …

Removing silica from make-up waters involves the use of precipitation softeners for reacting silica with a metal hydroxide, such as magnesium hydroxide [Mg(OH) ... reagent-grade calcium …

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From repulsion to attraction and back to repulsion: the effect of …

The force between silica surfaces in NaCl, KCl and CsCl aqueous solutions is studied at pH 5.5 using an atomic force microscope (AFM). As ion concentration is increased, …

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IMPROVED METHODS FOR REMOVAL OF SILICATE …

The combination of chelation chemistry with caustic has been found to successfully dissolve a variety of silicate species and provide a safer more ecologically friendly alternative to HF. The …

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Drying solvents

Examples of salting out include the separation of ethanol and water using potassium carbonate, the removal of isopropanol from water using sodium chloride, sodium …

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Factors Impacting Silica-Silicate Control Agent Performance …

Commonly used chemicals for silica removal include polyvalent metal hydroxides, i.e., Al(OH) 3, Fe(OH) 3, and Mg(OH) 2. It has been reported that these chemicals effectively remove both …

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Removing NaCl from a highly water soluble organic compound?

The method involves making a concentrated aqueous solution of dye, placing the solution in a length of tubing (I've use up to a couple of metres to clean up mutliple grams of dye), tying the …

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Selective Silica Removal | ResinTech

The use of specialty hybrid resins for the selective removal of silica from nuclear process water and radwaste.

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The rapid removal of iodide from aqueous solutions using a silica …

The removal efficiency of iodide was quite high at pH ranging from 4 to 10, but was lower at 3 and 11. The pH of the solution in acid condition was controlled with 1 mol/L HCl, …

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Silica removal using ion-exchange resins

With the aim of silica removal by ion exchange, some thermodynamic and kinetic aspects were studied at different temperatures. ... (ionic strength 0.1–0.2) sodium-chloride brine. The spring ...

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Silica Scaling in Water Treatment: Mechanism and Mitigation

precipitate amorphous silica, this is more affect the colloidial silica rather than mono silica. The precipitate Al with soluble silica is optimum at pH 8‐9: 20 ppm Al will reduce 100 ppm SiO2 to …

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THE ROE OF WATER CHEMISTRY ON PREVENTING …

chemicals for silica removal include polyvalent metal hydroxides i.e., Al(OH) 3, Fe(OH) 3, and Mg(OH) 2. It has been reported that these chemicals effectively remove both soluble and …

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Boiler Feedwater Treatment (Part II): Water Treatment

Lime is not effective in removing calcium sulfates and chlorides (permanent hardness). Soda ash is used primarily to reduce non-bicarbonate hardness (permanent hardness). The calcium …

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Ion Exchange & Water Demineralization Handbook | Veolia

An ion exchange water treatment system is a specialized technology used in wastewater treatment to remove dissolved ions and contaminants from water. This system relies on ion exchange resins that attract undesirable ions in the wastewater and exchange them with more desirable ions, effectively purifying th…

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Silica gel desiccants for moisture absorption: things you

Silica gel and calcium chloride have different ways to remove moisture from the surrounding environment. Silica gel does it by adsorption, which means that the water molecules adhere to …

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Colloidal Silica

A chart showing UF performance at an installation for removal of colloidal silica is shown in Fig. 2. Fig. 2 Membranes with a molecular weight cut-off (MWCO) of 100,000 remove upto 99% of …

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