The method and principle of sodium silicate solution removal natrium metasilicate

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For various sorts of pollutants, we can embrace different approaches of elimination approaches. Below are numerous typical methods and principles of sodium silicate remedy.

Precipitation method

The precipitation technique is a technique that utilizes pollutants ions to react with particular chemical reagents to create hard rainfall so regarding eliminate it from the sodium silicate option. For instance, for steel ions such as iron ions and light weight aluminum ions, alkaline reagents such as salt hydroxide or potassium hydroxide can be contributed to create 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 create carbonate precipitation. The reaction equation is as follows:

CA ₃ ² ⁻ + Co c → CACO ₃ ↓

Mg ₃ ² ⁻ + Carbon monoxide m → mgco ₃ ↓

The precipitation method is simple and the price is low, but you need to take note of the amount and reaction conditions of the sediment to make certain that the contaminations ions can be entirely precipitated.

Ion exchange approach

The ion exchange technique is to selectively adsorb and exchange the ions in the service with an ion exchange resin to eliminate the approach of impurities ions. Ion exchange resin is a polymer material with an ion exchange feature. It can trade reactions with the ion in the solution, absorb contaminations ions to the material, and retain the beneficial ions in sodium ions in salt silicate solution in the service.

The ion exchanges are excellent and can get rid of a variety of impurities ions, however the rate of ion exchange material is greater, and regrowth is required routinely.

Membrane layer splitting up

The membrane layer separation approach makes use of the semi-diaphragm to selectively travel through the different elements in the solution so regarding achieve the method of splitting up and removal. Depending upon the diameter dimension and splitting up concept of the membrane, the membrane splitting up method can be separated into numerous types, such as microfiltration, ultrafiltration, filtration and reverse osmosis.

For contaminations such as insoluble solid granules and macromolecular organic matter in sodium silicate remedy, micro fillets or ultrafiltration membrane layers can be utilized for removing; pollutants ions of some little molecules can be gotten rid of with the filtration or turn around osmosis membrane. The membrane separation technique has the advantages of straightforward operation, high splitting up performance, and reduced power usage.

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