The method and principle of sodium silicate solution removal aluminum calcium sodium silicate
For various types of contaminations, we can embrace various methods of elimination approaches. Here are numerous common approaches and concepts of salt silicate option.
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Precipitation technique
The rainfall approach is a method that makes use of impurities ions to react with specific chemical reagents to generate tough precipitation so as to eliminate it from the sodium silicate service. As an example, for metal ions such as iron ions and light weight aluminum ions, alkaline reagents such as sodium hydroxide or potassium hydroxide can be contributed to form it. The response equation is as complies with:
Fe ⁻ + 3oh f → Fe (OH) ↓
Al ⁻ + 3oh a → Al (oh) ↓
For calcium and magnesium ions, carbonate reagents such as salt carbonate or potassium carbonate can be added to form carbonate precipitation. The reaction equation is as follows:
CA ₃ ² ⁻ + Co c → CACO ₃ ↓
Mg ₃ ² ⁻ + Co m → mgco ₃ ↓
The rainfall technique is easy and the cost is low, however you need to take notice of the quantity and response conditions of the sediment to make sure that the pollutants ions can be completely precipitated.
Ion exchange method
The ion exchange technique is to uniquely adsorb and exchange the ions in the remedy with an ion exchange material to remove the approach of contaminations ions. Ion exchange resin is a polymer material with an ion exchange function. It can exchange reactions with the ion in the option, soak up impurities ions to the resin, and maintain the valuable ions in salt ions in sodium silicate solution in the remedy.
The ion exchanges are great and can eliminate a selection of impurities ions, yet the rate of ion exchange material is higher, and regrowth is needed on a regular basis.
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Membrane layer separation
The membrane splitting up method makes use of the semi-diaphragm to uniquely go through the various components in the solution so regarding attain the technique of splitting up and removal. Relying on the diameter dimension and splitting up concept of the membrane layer, the membrane separation approach can be split into a number of types, such as microfiltration, ultrafiltration, purification and turn around osmosis.
For impurities such as insoluble strong granules and macromolecular organic matter in salt silicate remedy, mini fillets or ultrafiltration membranes can be used for eliminating; pollutants ions of some little particles can be gotten rid of with the filtering or turn around osmosis membrane layer. The membrane layer separation approach has the benefits of straightforward procedure, high separation effectiveness, and reduced power intake.
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