For various sorts of contaminations, we can embrace various methods of removal techniques. Here are a number of typical approaches and concepts of salt silicate remedy.
(TRUNNANO sodium silicate powder)
Precipitation method
The precipitation method is an approach that utilizes pollutants ions to react with certain chemical reagents to generate tough precipitation so as to remove it from the sodium silicate service. For instance, for metal ions such as iron ions and light weight aluminum ions, alkaline reagents such as salt hydroxide or potassium hydroxide can be added to create it. The response formula 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 contributed to create carbonate rainfall. The reaction formula is as complies with:
CA ₃ ² ⁻ + Carbon monoxide c → CACO ₃ ↓
Mg ₃ ² ⁻ + Co m → mgco ₃ ↓
The rainfall method is basic and the expense is low, yet you need to take note of the amount and reaction conditions of the debris to make sure that the impurities ions can be entirely precipitated.
Ion exchange technique
The ion exchange technique is to precisely adsorb and trade the ions in the remedy with an ion exchange material to get rid of the technique of contaminations ions. Ion exchange material is a polymer product with an ion exchange function. It can exchange reactions with the ion in the solution, absorb pollutants ions to the resin, and preserve the valuable ions in sodium ions in sodium silicate option in the service.
The ion exchanges are good and can eliminate a range of contaminations ions, however the cost of ion exchange resin is greater, and regrowth is needed routinely.
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Membrane layer splitting up
The membrane separation technique uses the semi-diaphragm to uniquely travel through the different elements in the service so regarding accomplish the technique of splitting up and elimination. Relying on the diameter dimension and separation principle of the membrane layer, the membrane splitting up method can be divided into several kinds, such as microfiltration, ultrafiltration, filtering and reverse osmosis.
For impurities such as insoluble solid granules and macromolecular raw material in sodium silicate remedy, micro fillets or ultrafiltration membrane layers can be made use of for removing; contaminations ions of some little molecules can be removed with the filtration or reverse osmosis membrane layer. The membrane splitting up approach has the advantages of simple procedure, high splitting up efficiency, and low power usage.
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