title: Contribution of a submerged membrane bioreactor in the treatment of synthetic effluent contaminated by Bisphenol-A: mechanism of BPA removal and membrane fouling.
abstract: A submerged membrane bioreactor has been operated at the laboratory scale for the treatment of a synthetic effluent containing Bisphenol-A (BPA). COD, NH4-N, PO4-P and BPA were eliminated respectively, at 99%, 99%, 61% and 99%. The increase of volumetric loading rate from 0 to 21.6 g/m(3)/d did not affect the performance of the MBR system. However, the removal rate decreased rapidly when the BPA loading rate increased above 21.6 g/m(3)/d. The adsorption process of BPA on the biomass was very well described by Freundlich and Langmuir isotherms. Subsequently, biodegradation of BPA occurred and followed the first order kinetic reaction, with a constant rate of 1.13 ± 0.22 h(-1). During treatment, membrane fouling was reversible in the first 84 h of filtration, and then became irreversible. The membrane fouling was mainly due to the accumulation of suspended solid and development of biofilm on the membrane surface.
authors.affiliation: Institut national de la recherche scientifique (INRS-Eau, Terre et Environnement), Université du Québec, 490 rue de la Couronne, Québec, Qc, Canada G1K 9A9.
authors.forename: Brahima
authors.initials: B
authors.lastname: Seyhi
authors.forename: Patrick
authors.initials: P
authors.lastname: Drogui
authors.forename: Gerardo
authors.initials: G
authors.lastname: Buelna
authors.forename: Antonin
authors.initials: A
authors.lastname: Azaïs
authors.forename: Marc
authors.initials: M
authors.lastname: Heran
mesh_terms: D001559:Benzhydryl Compounds / Q000032:analysis*; D001673:Biodegradation, Environmental; D018441:Biofilms; D019149:Bioreactors; D008567:Membranes, Artificial; D010636:Phenols / Q000032:analysis*; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000032:analysis*; D000098826:Bisphenol A Compounds
chemical_list: D001559:Benzhydryl Compounds; D008567:Membranes, Artificial; D010636:Phenols; D014874:Water Pollutants, Chemical; C006780:bisphenol A; D000098826:Bisphenol A Compounds
keywords: Adsorption; Biodegradation; Bisphenol-A; Membrane bioreactor; Membrane fouling; Removal pathways