| Autor: |
Mikhak, Azadeh, Sohrabi, Akbar, Kassaee, Mohammad, Feizian, Mohammad, Najafi Disfani, Marjan |
| Předmět: |
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| Zdroj: |
Arabian Journal for Science & Engineering (Springer Science & Business Media B.V. ); Jun2017, Vol. 42 Issue 6, p2433-2439, 7p |
| Abstrakt: |
In this study, we used clinoptilolite-supported iron hydroxide NPs ( $$\hbox {Fe(OH)}_{3}$$ /Cp) for evaluating the simultaneous removal of $$\hbox {NO}_{3}^{-}$$ and $$\hbox {PO}_{4}^{-3}$$ . Remediation was investigated in a range of initial concentrations of $$\hbox {NO}_{3}^{-}$$ (0-25 mg/L) and $$\hbox {PO}_{4}^{-3}$$ (0-25 mg/L) as a function of pH (2-8), nanoparticles concentration (1 and 0.5 g/L). To achieve the best result, the weight ratio of raw material in iron sulfate versus clinoptilolite (5:1, 2:1, 1:1, 2:1) was tested. The highest pollutant removal was obtained 93% for $$\hbox {PO}_{4}^{-3}$$ in 5:1 ratio of Fe versus clinoptilolite and 81% for $$\hbox {NO}_{3}^{-}$$ in 1:2 ratio of Fe versus clinoptilolite at the pH of 2. Kinetic data for $$\hbox {NO}_{3}^{-}$$ and $$\hbox {PO}_{4}^{-3}$$ were well fitted in the pseudo-first-order model and pseudo-second-order model, respectively. Based on the results, it may be concluded that $$\hbox {Fe(OH)}_{3}$$ /Cp NPs can effectively be used for simultaneous removal of $$\hbox {NO}_{3}^{- }$$ and $$\hbox {PO}_{4}^{-3 }$$ from water resources. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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