Seasonal variation in the properties of titania photocatalysts produced from Ti-salt flocculated bioresource sludge

Bioresour Technol. 2011 May;102(9):5545-9. doi: 10.1016/j.biortech.2010.11.060. Epub 2010 Nov 19.

Abstract

Ti-salt flocculation of biologically treated sewage effluent (BTSE) was carried out on monthly basis during one year to trace the seasonal variation in the properties of BTSE, Ti-salt flocculated BTSE and titania photocatalysts. Titania photocatalysts were produced from incineration of Ti-salt flocculated sludge at 600°C. The physio-chemical properties of BTSE, Ti-salt flocculated BTSE and titania photocatalysts were investigated. The photocatalytic activity of titania was examined using different substrates of rhodamine B and humic acid under UV light irradiation. Results indicated that the flocculation performance of Ti-salt was not affected by the seasonal variation of BTSE. BTSE characteristics resulted in marginal effect in titania characterisation and photocatalytic activity. Titania photocatalysts produced from Ti-salt flocculated sludge in different seasons showed constant anatase phase, high BET surface area and high photocatalytic activity.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alkalies / chemistry
  • Catalysis / radiation effects
  • Flocculation / radiation effects
  • Hardness / radiation effects
  • Humic Substances / analysis
  • Metals, Heavy / isolation & purification
  • Microscopy, Electron, Scanning
  • Microscopy, Electron, Transmission
  • Nephelometry and Turbidimetry
  • Phosphorus / isolation & purification
  • Photoelectron Spectroscopy
  • Rhodamines / chemistry
  • Seasons*
  • Sewage / chemistry*
  • Spectrometry, X-Ray Emission
  • Surface Properties / radiation effects
  • Titanium / chemistry*
  • Ultraviolet Rays*
  • Waste Disposal, Fluid
  • X-Ray Diffraction

Substances

  • Alkalies
  • Humic Substances
  • Metals, Heavy
  • Rhodamines
  • Sewage
  • titanium dioxide
  • Phosphorus
  • Titanium
  • rhodamine B