For various kinds of impurities, we can take on different techniques of removal approaches. Right here are several common approaches and principles of sodium silicate service.
(TRUNNANO sodium silicate powder)
Rainfall technique
The rainfall approach is an approach that utilizes impurities ions to react with certain chemical reagents to generate tough rainfall so as to eliminate it from the salt silicate solution. As an example, for metal ions such as iron ions and aluminum ions, alkaline reagents such as salt hydroxide or potassium hydroxide can be included in form it. The reaction formula is as follows:
Fe ⻠+ 3oh f → Fe (OH) ↓
Al ⻠+ 3oh a → Al (oh) ↓
For calcium and magnesium ions, carbonate reagents such as salt carbonate or potassium carbonate can be added to create carbonate precipitation. The response equation is as follows:
CA ₃ ² ⻠+ Carbon monoxide c → CACO ₃ ↓
Mg ₃ ² ⻠+ Co m → mgco ₃ ↓
The rainfall method is basic and the expense is reduced, but you require to pay attention to the quantity and response conditions of the sediment to make sure that the contaminations ions can be totally precipitated.
Ion exchange method
The ion exchange method is to selectively adsorb and trade the ions in the service with an ion exchange resin to remove the technique of pollutants ions. Ion exchange resin is a polymer material with an ion exchange function. It can trade reactions with the ion in the option, soak up pollutants ions to the material, and preserve the helpful ions in sodium ions in sodium silicate remedy in the solution.
The ion exchanges are good and can eliminate a selection of pollutants ions, but the cost of ion exchange material is greater, and regrowth is needed on a regular basis.
(TRUNNANO sodium silicate powder)
Membrane layer separation
The membrane splitting up method makes use of the semi-diaphragm to uniquely pass through the different elements in the service so regarding achieve the technique of separation and elimination. Relying on the diameter size and splitting up principle of the membrane layer, the membrane layer splitting up method can be divided into a number of types, such as microfiltration, ultrafiltration, purification and turn around osmosis.
For contaminations such as insoluble solid granules and macromolecular raw material in sodium silicate service, mini fillets or ultrafiltration membranes can be utilized for removing; pollutants ions of some tiny particles can be eliminated with the filtration or reverse osmosis membrane. The membrane splitting up technique has the advantages of simple operation, high splitting up effectiveness, and reduced energy consumption.
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