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Waste oils have been studied as a solvent for absorption and biodegradation of 7 VOC  Volatility, viscosity, partition coefficient and toxicity towards VOC were investigated  Choice of a solvent depends also on its availability and cost  Engine oil is not appropriate to absorption of VOC because of its high volatility  Hydraulic oil is the most suitable waste oil for absorption and biodegradation of VOC

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International audienceThis study focused on the removal of antibiotic by coupling of heterogeneous photocatalysis with ozonation and hydrogen peroxide. The main objective was to intensify the efficiency of photocatalytic activity for better and faster antibiotic elimination/mineralization in wastewater. To fulfill this purpose a photocatalytic process based on falling film reactor was designed and optimized. The effects of operating parameters such as wastewater flow rate in the falling film reactor, the presence of an oxidizing agent (H2O2 and O3), inlet concentrations, including catalyst dosage and light intensity were investigated and discussed. Experiments were mainly conducted with Flumequine and Clarithromycin. The first molecule (Flumequine) will serve as an example of fluoroquinolone antibiotics and the second (Clarithromycin) as an example of macrolide antibiotics. Experimentally, the results have shown interesting degradation and mineralization efficiency (on the order of 94% for degradation and 76% for mineralization). Evidence for redox catalysis was shown using X-ray photoelectron spectroscopy (XPS) before and after pollutant degradation. Moreover, special attention was also paid to identify the reaction products and the plausible degradation pathway during Flumequine degradation

Plasma catalysis association for indoor air treatment has been investigated.  Synergetic effect between plasma and catalysis has been confirmed  Good performance on combination of photocatalysis to plasma technologies.  Mineralization and oxidize by-products of a binary mixture were monitored.

 Hydrodynamics of two waste oils and PDMS in a structured packing was investigated  Pressure drop in the loading zone was lower than 450 Pa m-1  Loading and flooding velocities were relatively low, especially using the viscous lubricant  Billet-Schultes correlations were efficient to predict the loading and flooding points and the pressure drop  Scale-up calculations proved that transformer oil can be used in an industrial scale packed column