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

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For various sorts of pollutants, we can embrace different techniques of removal methods. Below are several typical techniques and principles of salt silicate solution.

Precipitation method

The precipitation method is an approach that uses pollutants ions to respond with specific chemical reagents to produce difficult rainfall so regarding eliminate it from the salt silicate option. For example, for steel ions such as iron ions and light weight aluminum ions, alkaline reagents such as sodium hydroxide or potassium hydroxide can be added to create it. The reaction 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 added to form carbonate rainfall. The reaction formula is as follows:

CA ₃ ² ⁻ + Co c → CACO ₃ ↓

Mg ₃ ² ⁻ + Co m → mgco ₃ ↓

The rainfall approach is straightforward and the cost is reduced, but you require to take note of the quantity and response problems of the sediment to guarantee that the contaminations ions can be totally precipitated.

Ion exchange method

The ion exchange technique is to uniquely adsorb and exchange the ions in the remedy with an ion exchange material to remove the technique of pollutants ions. Ion exchange material is a polymer material with an ion exchange feature. It can exchange reactions with the ion in the remedy, soak up contaminations ions to the material, and maintain the helpful ions in salt ions in sodium silicate option in the service.

The ion exchanges are great and can get rid of a selection of impurities ions, yet the cost of ion exchange material is greater, and regeneration is required on a regular basis.

Membrane separation

The membrane layer separation technique uses the semi-diaphragm to uniquely travel through the different elements in the option so regarding accomplish the technique of separation and removal. Relying on the diameter dimension and splitting up principle of the membrane, the membrane layer splitting up technique can be separated into a number of kinds, such as microfiltration, ultrafiltration, filtering and turn around osmosis.

For impurities such as insoluble strong granules and macromolecular raw material in salt silicate option, mini fillets or ultrafiltration membrane layers can be used for removing; contaminations ions of some tiny molecules can be removed with the purification or reverse osmosis membrane layer. The membrane separation method has the advantages of basic procedure, high splitting up performance, and reduced power consumption.

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