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Photocatalytic degradation of furfural by titania nanoparticles in a floating-bed photoreactor
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Photocatalytic degradation of furfural by titania nanoparticles in a floating-bed photoreactor

Faramarzpour, M

Photocatalytic degradation of furfural by titania nanoparticles in a floating-bed photoreactor

Faramarzpour, M ; Sharif University of Technology | 2009

819 Viewed
  1. Type of Document: Article
  2. DOI: 10.1016/j.cej.2008.05.033
  3. Publisher: 2009
  4. Abstract:
  5. In this research, an attempt was made to investigate the potential of nanophotocatalysts for treatment of hazardous wastewater streams. Titanium dioxide nanoparticles (as photocatalyst) were immobilized on a porous and low-density support called "perlite" using a very simple and inexpensive method. TiO2-coated perlite granules were used in a "Floating-bed photoreactor" to study the photocatalytic purification process of a typical wastewater polluted by furfural. The effects of initial concentration, catalyst mass/solution volume ratio, oxidant molar flow, residence time, and light intensity on process removal efficiency, and kinetics of the reactions were studied. SEM analyses showed a properly uniform distribution of titanium dioxide nanoparticles on perlite granules. HPLC analyses of the photocatalytic treatment experiments of water streams synthetically polluted with furfural showed a fairly good performance for the immobilized catalyst. A furfural concentration reduction of more than 95% was observed within 120 min. Kinetics of the reaction, strongly depends on pollutant concentration in the solution and mass diffusion phenomenon seems to be the controlling step. Crown Copyright © 2008
  6. Keywords:
  7. Furfural ; Titanium dioxide (TiO2) ; Aldehydes ; Catalysis ; Chemical oxygen demand ; Concentration (process) ; Degradation ; Furfural ; Granulation ; Metal refining ; Nanoparticles ; Nanostructured materials ; Nanostructures ; Oxides ; Photocatalysis ; Photodegradation ; Reaction kinetics ; Removal ; River pollution ; Titanium ; Titanium dioxide ; Titanium oxides ; Wastewater ; Wastewater treatment ; Concentration reductions ; Hazardous wastewaters ; Hplc analyses ; Immobilized catalysts ; Initial concentrations ; Light intensities ; Mass diffusions ; Molar flows ; Perlite ; Photocatalytic ; Photocatalytic treatments ; Photoreactor ; Pollutant concentrations ; Purification processes ; Removal efficiencies ; Residence times ; SEM analyses ; Titania nanoparticles ; Titanium dioxide nanoparticles ; Uniform distributions ; Volume ratios ; Water streams ; Water treatment
  8. Source: Chemical Engineering Journal ; Volume 146, Issue 1 , 2009 , Pages 79-85 ; 13858947 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/pii/S1385894708003136