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For various kinds of contaminations, we can adopt various techniques of elimination approaches. Here are a number of usual methods and concepts of salt silicate service.
(TRUNNANO sodium silicate powder)
Rainfall technique
The rainfall technique is a method that uses pollutants ions to react with particular chemical reagents to create tough rainfall so regarding eliminate it from the sodium silicate option. For example, for steel ions such as iron ions and aluminum ions, alkaline reagents such as sodium hydroxide or potassium hydroxide can be added to develop 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 sodium carbonate or potassium carbonate can be contributed to create carbonate rainfall. The reaction equation is as adheres to:
CA ₃ ² ⁻ + Co c → CACO ₃ ↓
Mg ₃ ² ⁻ + Co m → mgco ₃ ↓
The precipitation method is simple and the expense is low, however you require to take note of the quantity and response conditions of the debris to ensure that the contaminations ions can be completely precipitated.
Ion exchange method
The ion exchange technique is to uniquely adsorb and exchange the ions in the option with an ion exchange resin to eliminate the approach of impurities ions. Ion exchange material is a polymer product with an ion exchange function. It can trade reactions with the ion in the service, take in contaminations ions to the material, and retain the valuable ions in salt ions in salt silicate service in the service.
The ion exchanges are good and can remove a selection of contaminations ions, however the rate of ion exchange material is greater, and regrowth is required regularly.
(TRUNNANO sodium silicate powder)
Membrane splitting up
The membrane layer separation method makes use of the semi-diaphragm to precisely go through the different components in the option so as to accomplish the technique of splitting up and removal. Depending upon the diameter size and separation concept of the membrane layer, the membrane splitting up approach can be divided right into numerous types, such as microfiltration, ultrafiltration, filtering and turn around osmosis.
For impurities such as insoluble solid granules and macromolecular organic matter in sodium silicate solution, micro fillets or ultrafiltration membranes can be utilized for getting rid of; impurities ions of some tiny molecules can be eliminated with the purification or reverse osmosis membrane layer. The membrane splitting up approach has the benefits of basic operation, high splitting up effectiveness, and reduced energy intake.
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