Efficiency of advanced wastewater treatment plant system and laboratory-scale micelle-clay filtration for the removal of ibuprofen residues

Khalaf, Samer
Al-Rimawi, Fuad
Khamis, Mustafa
Zimmerman, Dikla
Shuali, Uri
Nir, Shlomo
Scrano, Laura
Bufo, Sabino A.
Karaman, Rafik
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Taylor & Francis
The efficiency of Al-Quds Waste Water Treatment Plant (WWTP), which includes sequential elements as activated sludge, ultrafiltration, activated carbon column and reverse osmosis, to remove spiked ibuprofen, a non steroid anti inflammatory drug (NSAID), was investigated. Kinetic studies in pure water and in the activated sludge indicated that the drug was stable during one month of observation. Besides, the overall performance of the integrated plant showed complete removal of ibuprofen from wastewater. Activated carbon column, which was the last element in the sequence before the reverse osmosis system, yielded 95.7% removal of ibuprofen. Batch adsorptions of the drug by using either activated charcoal or composite micelle-clay system were determined at 25◦C and well described by Langmuir isotherms. Octadecyltrimethylammonium (ODTMA) bromide and montmorillonite were used to prepare the micelle-clay adsorbent, for which the adsorption kinetics are much faster than activated charcoal. Results suggest that integrating clay-micelle complex filters within the existing WWTP may be promising in improving removal efficiency of the NSAID.
Ibuprofen, wastewater, activated carbon, micelle-clay composite, adsorption isotherms, adsorption kinetics
Samer Khalaf , Fuad Al-Rimawi , Mustafa Khamis , Dikla Zimmerman , Uri Shuali , Shlomo Nir , Laura Scrano , Sabino A. Bufo & Rafik Karaman (2013): Efficiency of advanced wastewater treatment plant system and laboratoryscale micelle-clay filtration for the removal of ibuprofen residues, Journal of Environmental Science and Health, Part B: Pesticides, Food Contaminants, and Agricultural Wastes, 48:9, 814-821