Packed Bed Photoreactor for the Removal of Water Pollutants Using Visible Light Emitting Diodes

A packed bed photoreactor was developed using a structured photocatalyst active under visible light. The packed bed reactor was irradiated by visible light-emitting diodes (LEDs) for the evaluation of photocatalytic activity in the removal of different types of water pollutants. By using a flexible LEDs strip as the external light source, it was possible to use a simple cylindrical geometry for the photoreactor, thereby enhancing the contact between the photocatalyst and the water to be treated. The visible light active structured photocatalyst was composed by N-doped TiO2 particles supported on polystyrene spheres. Photocatalytic results showed that the almost total methylene blue decolorization was achieved after 120 min of irradiation. Moreover, the developed packed bed photoreactor was effective in the removal of ceftriaxone, paracetamol, and caffeine, allowing it to reach the almost total degradation of the pollutants and a total organic carbon removal above 80% after 180 min of visible light irradiation.

[1]  C. Bowen,et al.  Design and validation of a LED-based high intensity photocatalytic reactor for quantifying activity measurements , 2017 .

[2]  M. E. Borges,et al.  Solar photocatalysis at semi-pilot scale: wastewater decontamination in a packed-bed photocatalytic reactor system with a visible-solar-light-driven photocatalyst , 2017, Clean Technologies and Environmental Policy.

[3]  M. Sadiq,et al.  Photocatalytic degradation of caffeine as a model pharmaceutical pollutant on Mg doped ZnO-Al2O3 heterostructure , 2018, Environmental Nanotechnology, Monitoring & Management.

[4]  D. Sannino,et al.  Degradation of terephthalic acid in a photocatalytic system able to work also at high pressure , 2017 .

[5]  Ettore Zuccato,et al.  Presence of therapeutic drugs in the environment , 2000, The Lancet.

[6]  M. Ruello,et al.  A Novel Method for the Combined Photocatalytic Activity Determination and Bandgap Estimation , 2018, Methods and protocols.

[7]  O. Sacco,et al.  ZnO supported on zeolite pellets as efficient catalytic system for the removal of caffeine by adsorption and photocatalysis , 2018 .

[8]  Huijun Zhao,et al.  A comparative study between photocatalytic and photoelectrocatalytic properties of Pt deposited TiO2 thin films for glucose degradation , 2010 .

[9]  G. Y. Töre,et al.  Visible light active N-doped TiO2 immobilized on polystyrene as efficient system for wastewater treatment , 2017 .

[10]  Aniruddha B. Pandit,et al.  A review of imperative technologies for wastewater treatment II: hybrid methods , 2004 .

[11]  H. Lasa,et al.  Advances and Perspectives for Photocatalysis , 2005 .

[12]  Khairurrijal,et al.  Prototype of a flat-panel photoreactor using TiO2 nanoparticles coated on transparent granules for the degradation of Methylene Blue under solar illumination , 2017 .

[13]  Julián Blanco,et al.  Photocatalysis with solar energy at a pilot-plant scale: an overview , 2002 .

[14]  Shengjun Wu,et al.  Treatment of municipal wastewater by a magnetic activated sludge device , 2013 .

[15]  Alberto E. Cassano,et al.  Cylindrical photocatalytic reactors. Radiation absorption and scattering effects produced by suspended fine particles in an annular space , 1997 .

[16]  H. Ngo,et al.  Adsorption and photocatalysis kinetics of herbicide onto titanium oxide and powdered activated carbon , 2008 .

[17]  Bengt Perers,et al.  Construction and testing of a large-area CPC-collector and comparison with a flat plate collector , 1996 .

[18]  M. Shokri,et al.  Photocatalytic Degradation of Ceftriaxone in Aqueous Solutions by Immobilized TiO 2 and ZnO Nanoparticles : Investigating Operational Parameters , 2016 .

[19]  M. I. Maldonado,et al.  Photocatalytic degradation of emerging contaminants in municipal wastewater treatment plant effluents using immobilized TiO2 in a solar pilot plant , 2011 .

[20]  Stefano Peratello,et al.  Experimental methods in catalytic kinetics , 1999 .

[21]  Cláudia G. Silva,et al.  Kinetic modelling for the photocatalytic degradation of phenol by using TiO2‐coated glass raschig rings under simulated solar light , 2016 .

[22]  A. Chianese,et al.  Photocatalytic Degradation of Organic Dyes under Visible Light onN-Doped Photocatalysts , 2012 .

[23]  R. Sotudeh-Gharebagh,et al.  Influence of operating parameters on gas phase photocatalytic oxidation of methyl-ethyl-ketone in a light emitting diode (LED)-fluidized bed reactor , 2015, Korean Journal of Chemical Engineering.

[24]  M. Ksibi,et al.  Photocatalytic degradation of paracetamol on TiO 2 nanoparticles and TiO 2 /cellulosic fiber under UV and sunlight irradiation , 2017 .

[25]  P. Rajasulochana,et al.  Comparison on efficiency of various techniques in treatment of waste and sewage water – A comprehensive review , 2016, Resource-Efficient Technologies.

[26]  M. Bayramoğlu,et al.  Treatment of the textile wastewater by combined electrocoagulation. , 2006, Chemosphere.

[27]  Norhashimah Morad,et al.  1 Industrial Discharge and Their Effect to the Environment , 2017 .

[28]  D. Meroni,et al.  Emerging pollutant mixture mineralization by TiO_2 photocatalysts. The role of the water medium , 2017, Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology.

[29]  P. Ciambelli,et al.  From the design to the development of a continuous fixed bed photoreactor for photocatalytic degradation of organic pollutants in wastewater , 2015 .

[30]  S. I. Patsios,et al.  Novel pilot scale continuous photocatalytic membrane reactor for removal of organic micropollutants from water , 2016 .

[31]  D. Sannino,et al.  Photocatalytic activity of a visible light active structured photocatalyst developed for municipal wastewater treatment , 2018 .

[32]  A. Zinatizadeh,et al.  Statistical modeling of photocatalytic degradation of synthetic amoxicillin wastewater (SAW) in an immobilized TiO2 photocatalytic reactor using response surface methodology (RSM) , 2014 .

[33]  Ulrich Siemann,et al.  Solvent cast technology – a versatile tool for thin film production , 2005 .

[34]  Limin Chen,et al.  Degradation of phenol using Fe3O4-GO nanocomposite as a heterogeneous photo-Fenton catalyst , 2016 .

[35]  B. Dabir,et al.  Application of a new immobilized impinging jet stream reactor for photocatalytic degradation of phenol: Reactor evaluation and kinetic modelling , 2018, Journal of Photochemistry and Photobiology A: Chemistry.

[36]  C. Achete,et al.  Immobilized TiO2 on glass spheres applied to heterogeneous photocatalysis: photoactivity, leaching and regeneration process , 2018, PeerJ.

[37]  R. Saleh,et al.  Degradation of methylene blue and congo-red dyes using Fenton, photo-Fenton, sono-Fenton, and sonophoto-Fenton methods in the presence of iron(II,III) oxide/zinc oxide/graphene (Fe3O4/ZnO/graphene) composites , 2019, Separation and Purification Technology.

[38]  J. Herrmann,et al.  Heterogeneous photocatalysis: fundamentals and applications to the removal of various types of aqueous pollutants , 1999 .

[39]  H. Lasa,et al.  Photocatalytic reaction engineering , 2005 .

[40]  Samer I. Al-Gharabli,et al.  Photocatalytic hollow fiber membranes for the degradation of pharmaceutical compounds in wastewater , 2017 .

[41]  A. Karimi,et al.  Synthesis of nano zinc oxide on granular porous scoria: Application for photocatalytic removal of pharmaceutical and textile pollutants from synthetic and real wastewaters , 2015 .

[42]  A. Chianese,et al.  Photocatalytic Degradation of Organic Dyes under Visible Light onN-Doped Photocatalysts , 2012 .

[43]  Julián Blanco-Gálvez,et al.  Solar Photocatalytic Detoxification and Disinfection of Water: Recent Overview , 2007 .

[44]  D. Sannino,et al.  Effect of solar simulated N-doped TiO2 photocatalysis on the inactivation and antibiotic resistance of an E. coli strain in biologically treated urban wastewater , 2014 .

[45]  G. Colón,et al.  Comparative study of the photodeposition of Pt, Au and Pd on pre-sulphated TiO2 for the photocatalytic decomposition of phenol , 2011 .

[46]  Ethiraj Thiruvengadam,et al.  Development and Validation of Stability Indicating Spectroscopic Method for Content Analysis of Ceftriaxone Sodium in Pharmaceuticals , 2014, International scholarly research notices.

[47]  S. B. Sawant,et al.  Photocatalytic and photochemical degradation of nitrobenzene using artificial ultraviolet light , 2004 .

[48]  Yanyan Zhao,et al.  Degradation and removal of Ceftriaxone sodium in aquatic environment with Bi2WO6/g-C3N4 photocatalyst. , 2018, Journal of colloid and interface science.

[49]  E. Imam,et al.  TiO2 Solar Photocatalytic Reactor Systems: Selection of Reactor Design for Scale-up and Commercialization—Analytical Review , 2016 .

[50]  M. Panizza,et al.  APPLICATION OF BORON-DOPED DIAMOND ELECTRODES FOR WASTEWATER TREATMENT , 2008 .

[51]  P. Ciambelli,et al.  Mathematical modelling of the heterogeneous photo-Fenton oxidation of acetic acid on structured catalysts , 2013 .

[52]  Khairurrijal,et al.  Novel Solar Photocatalytic Reactor for Wastewater Treatment , 2017 .

[53]  P. Gogate,et al.  A review of imperative technologies for wastewater treatment I: oxidation technologies at ambient conditions , 2004 .

[54]  S. Nair,et al.  Photocatalytic Water Treatment by Titanium Dioxide: Recent Updates , 2012 .

[55]  R. Tayade,et al.  New Generation Energy-Efficient Light Source for Photocatalysis: LEDs for Environmental Applications , 2014 .

[56]  N. A. Abdelwahab,et al.  Flexible Bench-Scale Recirculating Flow CPC Photoreactor for Solar Photocatalytic Degradation of Methylene Blue Using Removable TiO2 Immobilized on PET Sheets , 2016 .

[57]  A Yediler,et al.  Ozonation of hydrolyzed azo dye reactive yellow 84 (CI). , 2002, Chemosphere.

[58]  T. Heberer.  Occurrence, fate, and removal of pharmaceutical residues in the aquatic environment: a review of recent research data. , 2002, Toxicology letters.

[59]  A. K. Ray,et al.  A new photocatalytic reactor for destruction of toxic water pollutants by advanced oxidation process , 1998 .