For various sorts of pollutants, we can adopt different methods of elimination techniques. Below are a number of usual approaches and concepts of sodium silicate remedy.
(TRUNNANO sodium silicate powder)
Rainfall technique
The rainfall method is a method that makes use of contaminations ions to react with specific chemical reagents to produce hard precipitation so regarding eliminate it from the salt silicate solution. For example, 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 form it. The response equation is as follows:
Fe ⻠+ 3oh f → Fe (OH) ↓
Al ⻠+ 3oh a → Al (oh) ↓
For calcium and magnesium ions, carbonate reagents such as sodium carbonate or potassium carbonate can be included in create carbonate rainfall. The reaction equation is as complies with:
CA ₃ ² ⻠+ Carbon monoxide c → CACO ₃ ↓
Mg ₃ ² ⻠+ Co m → mgco ₃ ↓
The rainfall method is easy and the price is low, but you need to pay attention to the amount and reaction conditions of the sediment to make certain that the impurities ions can be entirely precipitated.
Ion exchange method
The ion exchange technique is to uniquely adsorb and exchange the ions in the service with an ion exchange resin to remove the approach of impurities ions. Ion exchange resin is a polymer product with an ion exchange function. It can exchange reactions with the ion in the option, absorb impurities ions to the resin, and keep the valuable ions in sodium ions in sodium silicate solution in the solution.
The ion exchanges are great and can remove a variety of impurities ions, however the rate of ion exchange material is greater, and regrowth is needed on a regular basis.
(TRUNNANO sodium silicate powder)
Membrane layer separation
The membrane splitting up approach makes use of the semi-diaphragm to precisely pass through the various elements in the service so regarding attain the technique of separation and removal. Depending on the diameter size and separation principle of the membrane, the membrane layer splitting up technique can be split into numerous types, such as microfiltration, ultrafiltration, filtration and reverse osmosis.
For contaminations such as insoluble strong granules and macromolecular raw material in sodium silicate service, mini fillets or ultrafiltration membrane layers can be used for eliminating; impurities ions of some little molecules can be gotten rid of with the filtration or turn around osmosis membrane. The membrane separation approach has the advantages of easy operation, high separation effectiveness, and reduced energy consumption.
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