التفاصيل البيبلوغرافية
| العنوان: |
Mineral recovery from inland reverse osmosis concentrate using isothermal evaporation |
| المؤلفون: |
Mohammadesmaeili, Farah1, Badr, Mostafa Kabiri2, Abbaszadegan, Morteza1 abbaszadegan@asu.edu, Fox, Peter1 |
| المصدر: |
Water Research. Dec2010, Vol. 44 Issue 20, p6021-6030. 10p. |
| مصطلحات موضوعية: |
*EVAPORATION (Chemistry), *REVERSE osmosis, *WASTE products, *POTASSIUM, *CHLORIDES, *EXPERIMENTS, *SODIUM sulfate, *THERMODYNAMICS, *PREDICTION models |
| مستخلص: |
Abstract: Mineral recovery from reverse osmosis (RO) concentrate after concentration by a secondary sea water-type RO system with lime–soda pretreatment was the focus of this study. Lime–soda pretreatment removed Ca, Mg and Si allowing for the application of sea water-type RO resulting in a concentrate composed of sodium, potassium, sulfate and chloride. The overall objective was reduction in concentrate volume that will require disposal by evaporation while producing by-products with potential resale value. Thermodynamic phase equilibrium calculations using Pitzer’s correlations for 25 °C, accurately predicted the solubility and evaporation path of the sodium sulfate minerals as potential by-products. Bench-scale evaporation experiments verified the model predictions and indicated that 81–88% of the sodium sulfate by-products were Na2SO4. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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