Application of various methods for removal of polycyclic aromatic hydrocarbons from synthetic solid matrices


Karaca G. , TAŞDEMİR Y.

Environmental Technology (United Kingdom), vol.35, no.14, pp.1840-1850, 2014 (Journal Indexed in SCI Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 35 Issue: 14
  • Publication Date: 2014
  • Doi Number: 10.1080/09593330.2014.884634
  • Title of Journal : Environmental Technology (United Kingdom)
  • Page Numbers: pp.1840-1850
  • Keywords: PAH removal, solid matrix, advanced oxidation, diethylamine, titanium dioxide, POLYCHLORINATED-BIPHENYLS PCBS, WASTE-WATER, UV-LIGHT, SEWAGE-SLUDGE, SOIL SURFACES, SIMULATED SUNLIGHT, PHOTOCATALYTIC DEGRADATION, ORGANOCHLORINE PESTICIDES, AUTOMOTIVE INDUSTRY, MUNICIPAL SLUDGE

Abstract

In the present study, removal of polycyclic aromatic hydrocarbons (PAHs) from synthetic solid matrices with various methods was investigated. PAH removal experiments were conducted in a specifically designed UV apparatus for this study. Polyurethane foams (PUF) cartridges were used to remove PAHs from the incoming air and to capture PAHs from the evaporated gases. Sodium sulphate (Na2SO4) was used as a synthetic solid matrices. The effects of temperature, UV radiation, titanium dioxide (TiO2) and diethylamine (DEA) dose on the PAH removal were determined. TiO2and DEA were added to the Na2SO4 sample at the rate of 5% and 20% of dry weight of samples. PAHs removal from the Na2SO4 enhanced with increasing temperature. 12 PAH content in the Na 2SO4 reduced up to 95% during UV light application. Moreover, the 12 PAH removal ratio was calculated as 95% with using 5% of TiO2, and increasing of TiO2 dose negatively affected PAH removal. PAH concentration in the samples decreased by 93% and 99% with addition of 5% and 20% DEA, respectively. Especially, 3- and 4-ring PAH compounds evaporated during the PAH removal applications. As expected, evaporation mechanism became more effective at high temperature for light PAH compounds. It was concluded that PAHs can successfully be removed from synthetic solid matrices such as Na2SO4 with the applications of UV light and UV-photocatalysts. © 2014 Taylor & Francis.