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14 15Bisphenol A (BPA) is a typical Endocrine Disrupting Chemical (EDC), which is potentially 16 harmful during wastewater reclamation. In this study, its degradation during Fenton's process 17 under different operational conditions was investigated in combination with subsequent 18 nanofiltration of low concentration remnant BPA and compounds derived from oxidation. 19The results indicate that BPA could be degraded efficiently in aqueous phase by Fenton, even 20 at very low hydrogen peroxide doses. The treatment of up to 300 mg/L solutions of BPA 21with Fenton liquor at optimal conditions resulted in its complete removal in less than 2 min. 22The optimal conditions were found to be pH r = 3, H 2 O 2 /BPA = 0.20 and Fe 2+ /BPA = 0.012. 23 Five NF polymeric membranes having different properties were used for the nanofiltration of 24 treated and non-treated solutions. The nanofiltration of BPA solutions showed that rejection 25 is related to adsorption ability of BPA on the membrane and size exclusion mechanism. In 26 the nanofiltration of the effluent after Fenton oxidation, high TOC, COD, colour and Fe 2+ 27 (>77%) removal were achieved, although significant membrane fouling was also observed. 28The normalised water flux after membrane flushing with water was lower than 60% in almost 29 all used membranes, which indicates significant non-easily removable fouling. 30 31

Abstract:In this work, internal moisture profiles obtained either by simulation or experimentally during the convective drying of resorcinol-formaldehyde gels are compared. Such a comparison constitutes an attractive way to validate drying simulation models. X-ray microtomography, a powerful 3D imaging technique, coupled to image analysis is used to determine the internal moisture profiles in a non destructive way. A thermo-hygro-mechanical coupled model is used to simulate the moisture profiles developing during drying. Resorcinol-formaldehyde gels are used because their degree of shrinkage can be easily controlled. Results show a fairly good agreement between experimental and simulated profiles, especially at high moisture contents.

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