caa a22 4500 445388943 CHVBK 20180317143040.0 cr unu---uuuuu 170323e20110401xx s 000 0 eng 10.1007/s11144-010-0274-z doi (NATIONALLICENCE)springer-10.1007/s11144-010-0274-z Experimental investigation of the chemical reduction of nitrate ion in aqueous solution by Mg/Cu bimetallic particles [Elektronische Daten] [B. Ramavandi, S. Mortazavi, G. Moussavi, A. Khoshgard, M. Jahangiri] Bimetallic particles have recently been used as a new means of contaminant reduction from water. Comparing with Fe0 and Mg0 alone, synthesized magnesium/copper (Mg/Cu) bimetallic particles have been determined to be potential and efficient agents for nitrate reduction from aqueous solutions. This study suggests that the reductive denitrification of nitrate by Mg/Cu bimetallic particles was dependent on a number of parameters including reductant dose, solution temperature, initial nitrate concentration and contact time. The 1% Mg/Cu (Cu loading of 1wt.%) bimetallic particles removed the majority of the various nitrate concentrations tested (50, 100, 150, 200 and 300mg/L) within a short period. The time required for the removal of 90.6% of the NO3 − from a 100-mg/L solution was about 20min using 2g/L bimetallic Mg/Cu at an initial solution pH of 6. The activation energy (E a) for the nitrate reduction by 1% Mg/Cu over the temperature range of 5-60°C was 12.77kJ/mol. The experimental results of the kinetic analysis from batch studies indicated that a higher initial nitrate concentration yielded a greater reaction rate constant and the denitrification rate increased with increasing 1% Mg/Cu dosage. The effects of mixing rate on the denitrification rate suggested that the reaction rate increases linearly at mixing rate <100rpm and remained almost constant at rates over that. Akadémiai Kiadó, Budapest, Hungary, 2011 Magnesium/copper nationallicence Bimetal nationallicence Denitrification nationallicence Nitrate nationallicence Reduction nationallicence Ramavandi B. Department of Environmental Health, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran aut Mortazavi S. Department of Environmental Health, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran aut Moussavi G. Department of Environmental Health, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran aut Khoshgard A. Department of Chemical Engineering, Faculty of Engineering, Islamic Azad University, South Tehran Branch, Tehran, Iran aut Jahangiri M. Department of Occupational Health, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran aut Reaction Kinetics, Mechanisms and Catalysis Springer Netherlands 102/2(2011-04-01), 313-329 1878-5190 102:2<313 2011 102 11144 https://doi.org/10.1007/s11144-010-0274-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11144-010-0274-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ramavandi B. Department of Environmental Health, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran aut NATIONALLICENCE 700 1- Mortazavi S. Department of Environmental Health, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran aut NATIONALLICENCE 700 1- Moussavi G. Department of Environmental Health, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran aut NATIONALLICENCE 700 1- Khoshgard A. Department of Chemical Engineering, Faculty of Engineering, Islamic Azad University, South Tehran Branch, Tehran, Iran aut NATIONALLICENCE 700 1- Jahangiri M. Department of Occupational Health, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran aut NATIONALLICENCE 773 0- Reaction Kinetics, Mechanisms and Catalysis Springer Netherlands 102/2(2011-04-01), 313-329 1878-5190 102:2<313 2011 102 11144 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer