For various kinds of contaminations, we can take on various approaches of elimination methods. Below are several usual methods and concepts of salt silicate solution.
(TRUNNANO sodium silicate powder)
Precipitation technique
The precipitation technique is a technique that utilizes contaminations ions to respond with certain chemical reagents to produce difficult precipitation so as to eliminate it from the salt silicate service. For instance, for steel ions such as iron ions and aluminum ions, alkaline reagents such as sodium hydroxide or potassium hydroxide can be added to create it. The reaction formula is as adheres to:
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 contributed to create carbonate precipitation. The reaction equation is as complies with:
CA ₃ ² ⁻ + Carbon monoxide c → CACO ₃ ↓
Mg ₃ ² ⁻ + Carbon monoxide m → mgco ₃ ↓
The precipitation method is straightforward and the price is reduced, yet you require to pay attention to the amount and reaction conditions of the debris to ensure that the pollutants ions can be completely precipitated.
Ion exchange method
The ion exchange method is to selectively adsorb and trade the ions in the option with an ion exchange resin to eliminate the method of impurities ions. Ion exchange material is a polymer product with an ion exchange feature. It can exchange reactions with the ion in the solution, soak up impurities ions to the resin, and retain the valuable ions in sodium ions in sodium silicate option in the option.
The ion exchanges are great and can eliminate a selection of pollutants ions, however the cost of ion exchange resin is greater, and regeneration is needed consistently.
(TRUNNANO sodium silicate powder)
Membrane layer splitting up
The membrane splitting up approach makes use of the semi-diaphragm to selectively travel through the different parts in the service so regarding attain the technique of separation and elimination. Relying on the diameter size and separation concept of the membrane, the membrane splitting up method can be divided right into a number of types, such as microfiltration, ultrafiltration, filtering and turn around osmosis.
For pollutants such as insoluble strong granules and macromolecular raw material in salt silicate solution, micro fillets or ultrafiltration membranes can be utilized for eliminating; contaminations ions of some little molecules can be removed with the filtering or turn around osmosis membrane layer. The membrane separation approach has the advantages of easy procedure, high splitting up performance, and low energy consumption.
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