Palestra: Novel Photoreactors for Photochemical/Photocatalytic Processes: Towards Process Intensification
O Programa de Pós-Graduação em Engenharia Química, através do Programa CAPES PrInt/UFSC, tem o prazer de convidá-los para assistir a palestra intitulada:
Novel Photoreactors for Photochemical/Photocatalytic Processes: Towards Process Intensification
Palestrante: Dr. Vítor Jorge Pais Vilar
Instituição: Laboratory of Separation and Reaction Engineering – Laboratory of Catalysis and Materials (LSRE-LCM), Faculty of Engineering, University of Porto, Porto, Portugal, e-mail: vilar@fe.up.pt
Local: Auditório I do Departamento de Engenharia Química e Engenharia de Alimentos (52 lugares)
Data: 13/05/2019 – segunda-feira
Horário: 09h30min
Observação: a palestra será ministrada em inglês.
Abstract:
Light induced Advanced Oxidation Processes (AOPs) are attractive technologies with potential application in the area of water, wastewater and air treatment. The lack of knowledge on photoreactor design among the wider scientific and industrial community and integration with conventional technologies are some of the factors that are limiting the adoption of these emerging technologies for remediation purposes. Our research has been focused on: i) the integration of AOPs, using natural and artificial light, with other technologies such as biological oxidation and coagulation/flocculation to reduce substantially the costs associated with the AOPs step, considering the treatment of high strength wastewaters; ii) new designs for solar collectors to promote photocatalytic processes including aspects of reflective surface materials (anodized aluminum with and without protective coating, soiled aluminum and stainless steel) and geometries (flat, single piece-double parabola and two pieces-double parabola); iii) novel photoreactors for photochemical/photocatalytic processes using artificial UV light minimizing photon and mass transfer limitations.
An innovative photoreactor, named FluHelik, was designed to promote photochemical (UVC/H2O2) and photocatalytic processes (photo-Fenton) using artificial light. The FluHelik reactor can generate a helical motion of fluid around the UVC lamp, inducing unique fluid dynamics and irradiation properties. A novel mili-photoreactor (NETmix) with microscale illumination (UVA LEDs), consisting in a network of small sized static mixing chambers interconnected by transport channels, was designed to promote efficiently heterogeneous photocatalytic reactions for water and air purification. The NETmix maximizes the pollutant/reactants/catalyst contact and allows an uniform irradiance on the entire catalyst surface and through the entire reactor depth. Furthermore, research has been also oriented to the design of photocatalytic membrane reactors, in which inorganic membranes coated with photoactive nanoparticles allows only the permeation of small molecules and water through the membrane pores (i.e. separation function) and simultaneously its photocatalytic activity causes the degradation of the larger organic pollutants present in water.
