| Autor: |
Venkatesham, V., Madhu, G. M., Satayanarayana, S. V., Bhat, Varsha N., Preetham, H. S. |
| Předmět: |
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| Zdroj: |
IUP Journal of Chemical Engineering; 2012, p13-26, 14p, 1 Black and White Photograph, 5 Charts, 9 Graphs |
| Abstrakt: |
Groundwater in several parts of India is highly polluted with fluoride. Fluoride, although beneficial to humans in small quantities, causes dental fluorosis, brittle bones and stunted growth when consumed in larger quantities over a period of time. In the present investigation, Aluminum oxide (Al2O3) synthesized by gel combustion process was used as on adsorbent to remove fluoride from aqueous solution. The synthesized adsorbent was characterized by X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). The effects of pH, initial fluoride concentration and adsorbent dosage on adsorption were studied. Maximum fluoride adsorption on Al2O3 results at lower initial fluoride concentration (1 ppm), high adsorbent dosage (2.5 g/50 mL) and in acidic medium (2 pH). Statistically based experimental designs like Central Composite Design (CCD) and Box Behnken Method (BBM) were used to study the effect of variables on adsorption. The predicted and experimental values are in good agreement with regression coefficient more than 0.9. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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