Inhibitory effect of Hydrex anti-scalant on calcium scale deposition from seawater under multiple-effect distillers' conditions
| Autor: | Aasem Zeino, Zeinab I. Itiwi, Ehab AlShamaileh, Maha Al-Shabatat, Haitham Benykhalaf, Albara I. Alrawashdeh, Asma Aldawdeyah, Aiman Eid Al-Rawajfeh |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Scale inhibition
lcsh:Management. Industrial management Geography Planning and Development Calcium minerals MED chemistry.chemical_element Thermal desalination Calcium Anti-scalant chemistry.chemical_compound chemistry lcsh:HD28-70 Environmental chemistry Carbonate Scale deposition Seawater Turbidity Sulfate Inhibitory effect Deposition (chemistry) Water Science and Technology |
| Zdroj: | Water Resources and Industry, Vol 11, Iss C, Pp 58-63 (2015) |
| ISSN: | 2212-3717 |
| Popis: | In this work, the inhibitory effect of a commercial anti-scalant (Veolia Hydrex® 9209) on the calcium minerals of carbonate, sulfate and hydrocalumite (Ca/Al) clay deposition from seawater has been investigated. Different concentration factors and anti-scalant doses were studied by analyzing the water hardness and turbidity. The inhibitory effect of the investigated anti-scalant was efficient even at lower concentrations. The percentage inhibition decreases with increasing the temperature and increases with increasing the dose/amount of the anti-scalant. The carbonate scale inhibition was >99% and 98–99% at 50 and 70 °C, respectively. The percentage inhibition of sulfate from hemihydrate was ranged from 80% to 87% for 2 and 8 ppm anti-scalant at 50 °C. The inhibition of Ca/Al hydrocalumite deposition increases from 70% to 90% upon increasing the dose from 3 to 5 ppm, respectively. A recommended useful dose of antiscalant for seawater is 5 ppm. |
| Databáze: | OpenAIRE |
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