Naslov
Occurrence of pharmaceutical chemicals in landfill leachate and their removal by membrane biological reactor, nanofiltration and advanced oxidation

Autori
Terzić, Senka ; Korajlija Jakopović, Helena ; Matošić, Marin ; Mijatović, Ivan ; Ahel, Marijan

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of abstracts / - Frankfurt : Deutsche Gesellschaft für chemisches Apparatewesen (DECHEMA), 2007, 496-496

Skup
Micropol & Ecohazard 2007

Mjesto i datum
Frankfurt na Majni, Njemačka, 17.06.2007. - 20.06.2007

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
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.

Izvorni jezik
Engleski

Znanstvena područja
Geologija, Biotehnologija

POVEZANOST RADA