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Autori: Terzić, Senka; Korajlija Jakopović, Helena; Matošić, Marin; Mijatović, Ivan; Ahel, Marijan
Naslov: Occurrence of pharmaceutical chemicals in landfill leachate and their removal by membrane biological reactor, nanofiltration and advanced oxidation
( Occurrence of pharmaceutical chemicals in landfill leachate and their removal by membrane biological reactor, nanofiltration and advanced oxidation )
Izvornik: Book of abstractsFrankfurt, Njemačka : Dechema e.V. , 2007. 496-496.
Skup: Micropol & Ecohazard 2007
Mjesto i datum: Frankfurt, Njemčka, 17-20. 06. 2007.
Ključne riječi: pharmaceutical chemicals; landfill leachate; membrane biological reactor; advanced treatment
( pharmaceutical chemicals; landfill leachate; membrane biological reactor; advanced treatment )
Sažetak:
Landfill leachates have been known to contain complex assemblages of various contaminants, but the significance of pharmaceutical chemicals as groundwater contaminants was recognised only relatively recently. The aim of this study was to determine the occurrence of pharmaceutical chemicals in the municipal solid waste landfill of the city of Zagreb (Jakusevec landfill), Croatia, with a special emphasis on their occurrence in the landfill leachate, as well as to examine applicability of membrane and advanced oxidation processes for their removal. The Jakusevec landfill contains solid waste from both domestic and industrial origin and produces about 350000 m3 of heavily contaminated leachate per year. Broad-spectrum analysis of the leachate using gas chromatography/mass spectrometry (GC/MS) and liquid chromatography/mass spectrometry (LC/MS) has revealed that the composition of individual organic contaminants was very complex and included a significant contribution of different pharmaceutical chemicals. The predominant classes of pharmaceutical compounds in the leachate were intermediates from the vitamin C production and analgesics of the phenazone type, reaching the total concentration up to 50 mg/L. The behaviour of these pharmaceuticals in the leachate plume indicated their high mobility and persistence in the adjacent groundwater aquifer. Treatment of the leachate, using simple retention lagoons or conventional bioreactors, was not effective in reducing the levels of these pharmaceuticals. As an alternative for their removal, we have investigated the efficiency of different membrane processes, including membrane biological reactors (MBR) and nanofiltration (NF), and advanced oxidation (AO). Due to the biorefractory nature of vitamin C intermediates, their removal using MBR was rather modest, while NF revealed very high efficiencies, mostly above 90 %. AO was also very efficient, in particular in removing the recalcitrant vitamin C intermediate diacetone a-ketogulonic acid.
Vrsta sudjelovanja: Poster
Vrsta prezentacije u zborniku: Sažetak
Vrsta recenzije: Međunarodna recenzija
Projekt / tema: 098-0982934-2712, 058-0582171-2173
Izvorni jezik: eng
Kategorija: Znanstveni
Znanstvena područja:
Geologija,Biotehnologija
Upisao u CROSBI: ahel@irb.hr (ahel@irb.hr), 11. Svi. 2008. u 20:34 sati



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