Abstract
The polymerization of silica in hard water was investigated by using different supersaturation levels of silica at pH 7 and 8. The results indicate a kinetically stable range up to ~400ppm [SiO2] under the chosen conditions at pH 7, whereas no such range is present at pH 8. Additionally, polyvinylpyrrolidone and polyethers were tested for their silica inhibition capabilities. It was found that the performance is depending on molecular weight as well as dosage of the polymers, respectively. From these results, a mechanism for inhibition at pH 7 and 8 was suggested.
| Original language | English |
|---|---|
| Pages (from-to) | 899-907 |
| Number of pages | 9 |
| Journal | Desalination and Water Treatment |
| Volume | 51 |
| Issue number | 4-6 |
| DOIs | |
| State | Published - 2013 |
| Externally published | Yes |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 6 Clean Water and Sanitation
Keywords
- Antiscalants
- Polymers
- RO membranes
- Scaling process
- Silica polymerization
- Silica scale
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