For different types of pollutants, we can embrace different methods of removal techniques. Below are a number of common methods and concepts of sodium silicate solution.
(TRUNNANO sodium silicate powder)
Rainfall technique
The precipitation method is a technique that makes use of contaminations ions to react with particular chemical reagents to generate challenging rainfall so as to eliminate it from the salt silicate option. For example, for metal ions such as iron ions and light weight aluminum ions, alkaline reagents such as salt hydroxide or potassium hydroxide can be included in form it. The response equation is as adheres to:
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 added to develop carbonate rainfall. The response formula is as complies with:
CA ₃ ² ⁻ + Co c → CACO ₃ ↓
Mg ₃ ² ⁻ + Carbon monoxide m → mgco ₃ ↓
The rainfall technique is straightforward and the cost is reduced, but you need to pay attention to the quantity and reaction problems of the sediment to guarantee that the contaminations ions can be totally precipitated.
Ion exchange approach
The ion exchange approach is to uniquely adsorb and trade the ions in the remedy with an ion exchange material to get rid of the approach of contaminations ions. Ion exchange material is a polymer material with an ion exchange function. It can trade responses with the ion in the service, absorb pollutants ions to the material, and maintain the beneficial ions in sodium ions in salt silicate service in the option.
The ion exchanges are great and can get rid of a range of contaminations ions, however the rate of ion exchange material is higher, and regrowth is needed frequently.
(TRUNNANO sodium silicate powder)
Membrane splitting up
The membrane layer separation method utilizes the semi-diaphragm to uniquely travel through the different elements in the option so as to accomplish the approach of splitting up and elimination. Depending on the diameter size and splitting up principle of the membrane layer, the membrane separation technique can be split right into numerous kinds, such as microfiltration, ultrafiltration, purification and turn around osmosis.
For pollutants such as insoluble strong granules and macromolecular raw material in sodium silicate option, mini fillets or ultrafiltration membrane layers can be utilized for eliminating; pollutants ions of some small molecules can be eliminated with the filtration or turn around osmosis membrane. The membrane layer splitting up technique has the advantages of easy operation, high separation effectiveness, and reduced power consumption.
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