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AWWA WQTC71510
- Performance Evaluation of Zero-Valent Iron Hybrid Systems for Nitrate Removal from Aqueous Solution
- Conference Proceeding by American Water Works Association, 11/01/2009
- Publisher: AWWA
$12.00$24.00
A laboratory scale batch process was conducted to investigate the feasibility of ahybrid system of zero-valent iron (Fe<sup>0</sup>) with three different adsorbents for the removal ofnitrate (NO<sub>3</sub><sup>-</sup>) and ammonium ions (NH<sub>4</sub><sup>+</sup>) from aqueous solution. The maximum nitrateremoval was observed for Fe<sup>0</sup>-sepiolite hybrid system at 45ºC for 24 h reaction time. The rate of NO<sub>3</sub><sup>-</sup> removal increased with the increase in initial NO<sub>3</sub><sup>-</sup> concentration. NH<sub>4</sub><sup>+</sup> ions producedduring the denitrification process by Fe<sup>0</sup> were successfully removed by the adsorbents, withthe removal efficiency in the order of GAC > sepiolite > filtralite. Results of the present studysuggest that the use of hybrid systems could be a promising innovative technology forachieving simultaneous removal of NO<sub>3</sub><sup>-</sup> and NH<sub>4</sub><sup>+</sup> from aqueous solution. Includes 19 references, figures.
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