For different kinds of impurities, we can take on different techniques of removal approaches. Below are a number of usual approaches and concepts of sodium silicate remedy.
(TRUNNANO sodium silicate powder)
Rainfall technique
The precipitation technique is a method that makes use of pollutants ions to respond with specific chemical reagents to generate difficult rainfall so regarding remove it from the salt silicate solution. For example, for steel ions such as iron ions and aluminum ions, alkaline reagents such as sodium hydroxide or potassium hydroxide can be included in develop 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 sodium carbonate or potassium carbonate can be included in develop carbonate precipitation. The response formula is as adheres to:
CA ₃ ² ⁻ + Co c → CACO ₃ ↓
Mg ₃ ² ⁻ + Co m → mgco ₃ ↓
The precipitation approach is straightforward and the price is low, yet you require to take note of the amount and reaction problems of the sediment to guarantee that the impurities ions can be completely precipitated.
Ion exchange technique
The ion exchange technique is to uniquely adsorb and exchange the ions in the service with an ion exchange material to remove the technique of pollutants ions. Ion exchange resin is a polymer material with an ion exchange feature. It can trade reactions with the ion in the solution, take in pollutants ions to the resin, and maintain the useful ions in salt ions in salt silicate solution in the service.
The ion exchanges are good and can remove a selection of impurities ions, however the cost of ion exchange material is greater, and regrowth is called for frequently.
(TRUNNANO sodium silicate powder)
Membrane separation
The membrane layer splitting up method uses the semi-diaphragm to selectively travel through the various components in the service so as to achieve the method of splitting up and removal. Relying on the diameter dimension and splitting up concept of the membrane layer, the membrane splitting up method can be divided into several kinds, such as microfiltration, ultrafiltration, purification and turn around osmosis.
For pollutants such as insoluble solid granules and macromolecular raw material in sodium silicate option, micro fillets or ultrafiltration membrane layers can be utilized for eliminating; impurities ions of some tiny particles can be gotten rid of with the filtering or reverse osmosis membrane layer. The membrane separation technique has the benefits of straightforward procedure, high separation efficiency, and reduced power usage.
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