naa a22 4500 510820336 CHVBK 20180411083528.0 cr unu---uuuuu 180411e20130301xx s 000 0 eng 10.1007/s11814-012-0212-z doi (NATIONALLICENCE)springer-10.1007/s11814-012-0212-z Photocatalytic degradation of ammonia by light expanded clay aggregate (LECA)-coating of TiO2 nanoparticles [Elektronische Daten] [Masoud Zendehzaban, Shahram Sharifnia, Seyed Hosseini] Photocatalytic degradation of ammonia on supported TiO2 nanoparticles was investigated. The TiO2 nanoparticles used as photocatalyst were coated on light expanded clay aggregate granules (LECA), which is a porous and light weight support. Photocatalytic reaction activity of prepared catalyst was determined by ammonia degradation from water synthetically polluted with ammonia. Experiment results showed significantly high photocatalytic activity for the immobilized catalysts. The ammonia was removed more than 85% within 300 min of the process with optimum calcinations temperature 550 °C and pH 11. Kinetics of the photocatalytic reaction followed a pseudo-first order model. XRF, XRD and SEM analyses revealed a rather uniform coating of TiO2 on the support. By using floated TiO2/LECA as a photocatalyst in aqueous solution of NH 3 − , the ammonia was photodegraded into N2 and H2 gases, while NO 2 − and NO 3 − were formed at very low concentrations. Korean Institute of Chemical Engineers, Seoul, Korea, 2013 Wastewater nationallicence Photocatalyst nationallicence Ammonia nationallicence TiO2 nationallicence LECA nationallicence Zendehzaban Masoud Faculty of Engineering, Islamic Azad University, South Tehran Branch, Tehran, Iran aut Sharifnia Shahram Catalyst Research Center Chemical Engineering Department, Razi University, 67149-67246, Kermanshah, Iran aut Hosseini Seyed Research and Production Complex, Pasteur Institute of Iran, Tehran, Iran aut Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/3(2013-03-01), 574-579 0256-1115 30:3<574 2013 30 11814 https://doi.org/10.1007/s11814-012-0212-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11814-012-0212-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zendehzaban Masoud Faculty of Engineering, Islamic Azad University, South Tehran Branch, Tehran, Iran aut NATIONALLICENCE 700 1- Sharifnia Shahram Catalyst Research Center Chemical Engineering Department, Razi University, 67149-67246, Kermanshah, Iran aut NATIONALLICENCE 700 1- Hosseini Seyed Research and Production Complex, Pasteur Institute of Iran, Tehran, Iran aut NATIONALLICENCE 773 0- Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/3(2013-03-01), 574-579 0256-1115 30:3<574 2013 30 11814 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer