The method and principle of sodium silicate solution removal sodium water glass

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For various kinds of contaminations, we can embrace various techniques of removal techniques. Right here are numerous common techniques and principles of salt silicate option.

Precipitation method

The precipitation method is a technique that utilizes contaminations ions to react with certain chemical reagents to generate difficult precipitation so regarding remove it from the salt silicate remedy. For instance, for metal ions such as iron ions and aluminum ions, alkaline reagents such as salt hydroxide or potassium hydroxide can be added to create it. The response equation is as adheres to:

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 response formula is as adheres to:

CA ₃ ² ⁻ + Co c → CACO ₃ ↓

Mg ₃ ² ⁻ + Co m → mgco ₃ ↓

The precipitation method is basic and the expense is reduced, however you require to take notice of the amount and response conditions of the debris to guarantee that the pollutants ions can be totally precipitated.

Ion exchange technique

The ion exchange method is to selectively adsorb and exchange the ions in the solution with an ion exchange material to get rid of the approach 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 keep the beneficial ions in sodium ions in sodium silicate option in the remedy.

The ion exchanges are good and can remove a variety of contaminations ions, however the price of ion exchange resin is greater, and regrowth is needed regularly.

Membrane layer splitting up

The membrane layer splitting up approach makes use of the semi-diaphragm to precisely pass through the different elements in the solution so regarding attain the approach of splitting up and removal. Depending on the diameter size and splitting up concept of the membrane layer, the membrane layer splitting up method can be split right into several kinds, such as microfiltration, ultrafiltration, purification and reverse osmosis.

For contaminations such as insoluble solid granules and macromolecular organic matter in salt silicate remedy, micro fillets or ultrafiltration membranes can be used for eliminating; contaminations ions of some small particles can be gotten rid of with the purification or reverse osmosis membrane. The membrane splitting up method has the benefits of simple procedure, high splitting up effectiveness, and reduced energy usage.

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