Preprint Article Version 1 This version is not peer-reviewed

A Semi-Pilot Photocatalytic Rotating Reactor (RFR) with Supported TiO2 /Ag Catalysts for Water Treatment

Version 1 : Received: 31 October 2017 / Approved: 1 November 2017 / Online: 1 November 2017 (04:44:39 CET)

A peer-reviewed article of this Preprint also exists.

Montalvo-Romero, C.; Aguilar-Ucán, C.; Alcocer-Dela hoz, R.; Ramirez-Elias, M.; Cordova-Quiroz, V. A Semi-Pilot Photocatalytic Rotating Reactor (RFR) with Supported TiO2/Ag Catalysts for Water Treatment. Molecules 2018, 23, 224. Montalvo-Romero, C.; Aguilar-Ucán, C.; Alcocer-Dela hoz, R.; Ramirez-Elias, M.; Cordova-Quiroz, V. A Semi-Pilot Photocatalytic Rotating Reactor (RFR) with Supported TiO2/Ag Catalysts for Water Treatment. Molecules 2018, 23, 224.

Journal reference: Molecules 2018, 23, 224
DOI: 10.3390/molecules23010224

Abstract

A four stage semi-pilot scale RFR reactor with ceramic disks as support for TiO2 modified with silver particles was developed for the removal of organic pollutants. The design presented in this article is an adaptation of the rotating biological reactors (RBR) and its coupling with the modified catalyst provides additional advantages to designs where a catalyst in suspension is used. The optimal parameter of rotation was 54 rpm and the submerged surface of the disks offer a total contact area of 387 M2. The modified solid showed a decrease in the value of its bandgap compared to commercial titanium. The system has a semi-automatic operation with a maximum reaction time of 50 h. Photo-activity tests show high conversion rates at low concentrations. The results conform to the Langmuir heterogeneous catalysis model.

Subject Areas

rotating photocatalytic reactor; TiO2 /Ag catalysts; water treatment

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