For different sorts of contaminations, we can embrace various techniques of elimination methods. Right here are several common approaches and concepts of sodium silicate solution.
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Precipitation technique
The precipitation approach is a technique that uses contaminations ions to react with specific chemical reagents to generate challenging rainfall so as to eliminate it from the salt silicate option. For instance, for metal ions such as iron ions and light weight aluminum ions, alkaline reagents such as sodium hydroxide or potassium hydroxide can be included in 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 included in develop carbonate precipitation. The response equation is as adheres to:
CA ₃ ² ⁻ + Carbon monoxide c → CACO ₃ ↓
Mg ₃ ² ⁻ + Co m → mgco ₃ ↓
The rainfall approach is basic and the price is reduced, yet you require to focus on the amount and reaction conditions of the sediment to make sure that the pollutants ions can be totally precipitated.
Ion exchange approach
The ion exchange approach is to precisely adsorb and exchange 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 function. It can exchange reactions with the ion in the solution, take in pollutants ions to the resin, and retain the valuable ions in salt ions in salt silicate option in the remedy.
The ion exchanges are great and can eliminate a variety of impurities ions, however the rate of ion exchange resin is greater, and regeneration is called for routinely.
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Membrane layer separation
The membrane layer splitting up approach uses the semi-diaphragm to precisely travel through the various elements in the remedy so regarding accomplish the approach of separation and removal. Depending upon the diameter size and splitting up concept of the membrane layer, the membrane splitting up technique can be divided into several types, such as microfiltration, ultrafiltration, filtration and turn around osmosis.
For pollutants such as insoluble solid granules and macromolecular organic matter in sodium silicate option, mini fillets or ultrafiltration membranes can be used for eliminating; contaminations ions of some tiny particles can be removed with the filtration or turn around osmosis membrane layer. The membrane separation approach has the benefits of easy operation, high splitting up performance, and low energy usage.
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