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Removal of PAHs and LAS in three lab scale Sequencing Batch Reactors

The removal of selected Polycyclic Aromatic Hydrocarbons (PAHs) (i.e., phenanthrene, fluoranthene and pyrene) as well as a mixture of Linear Alkylbenzene Sulfonates (LAS) in three bench top Sequencing Batch Reactors (SBR) with a 2 L working volume were examined. The bioreactors were fed with increasing concentrations of these compounds, spiked in synthetic domestic wastewater over a time period of 48 days with a loading rate of 3 L.d-1 at 20°C.

In general the reactor operation was marginally affected by the presence of xenobiotics and at every pulse increase in the influent concentration, a respond in no less than three days was followed by a relative increase in the biodegradation and metabolism rate in the reactors and a decrease in effluent concentration to previous low levels. Percent removal of PAHs varied for each compound from an average of 93.7±5.4%, 95.8±2.1%, 76.8±10.3% and 89.3±4.5% for phenanthrene, fluoranthene, pyrene and the sum of these compounds respectively. Furthermore, percent removal of C10-C13 LAS homologues was found to be 95.4± 5.0 for C10, 96.9± 3.5 for C11, 96.0± 5.1 for C12 and 93.7± 8.5 for C13.

Copyright:	© Aristotle University of Thessaloniki
Quelle:	2nd International Conference 2009 (Juni 2009)
Seiten:	6
Preis:	€ 5,00
Autor:	S. Terzakis Dr. Michael Fountoulakis S. Mamounas M. Patinioti Professor Nicolas Kalogerakis
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