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

Carlos Montalvo; Claudia Aguilar; Roberto Alcocer; Miguel Ramirez

doi:10.20944/preprints201711.0004.v1

Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

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

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.

rotating photocatalytic reactor; TiO2 /Ag catalysts; water treatment

MATERIALS SCIENCE, General Materials Science

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

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