Biodegradation of olive mill wastewater in a membrane bioreactor: acclimation of the biomass and constraints
| Autor: | Yasamine Jaouad, Laila Mandi, Maud Villain, Benoit Marrot, Naaila Ouazzani |
|---|---|
| Přispěvatelé: | Laboratoire de Mécanique, Modélisation et Procédés Propres (M2P2), Aix Marseille Université (AMU)-École Centrale de Marseille (ECM)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-École Centrale de Marseille (ECM)-Aix Marseille Université (AMU) |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Ultrafiltration
Biomass Ocean Engineering 02 engineering and technology 010501 environmental sciences Membrane bioreactor 01 natural sciences chemistry.chemical_compound Soluble microbial products [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering 0105 earth and related environmental sciences Water Science and Technology Olive mill wastewater Waste management External ceramic membrane bioreactor Chemical oxygen demand Membrane fouling food and beverages Fouling Biodegradation 021001 nanoscience & nanotechnology Pulp and paper industry Pollution 6. Clean water Wastewater chemistry Hydroxytyrosol 0210 nano-technology Acclimation |
| Zdroj: | Desalination and Water Treatment Desalination and Water Treatment, 2015, 57 (18), pp.8109-8118. ⟨10.1080/19443994.2015.1025435⟩ Desalination and Water Treatment, FHF, 2015, 57 (18), pp.8109-8118. ⟨10.1080/19443994.2015.1025435⟩ |
| ISSN: | 1944-3994 1944-3986 |
| Popis: | International audience; In order to overcome the toxic effect of olive mill wastewater (OMWW) on biomass during biological treatment, this work will test OMWW biodegradation in a membrane bioreactor (MBR) using an acclimation procedure and will study its constraints. Special focus will be put on soluble microbial products (SMP) analysis in MBR and their impact on membrane fouling. The study was realized in an external ceramic ultrafiltration MBR which offers more flexibility than the other biological treatments (i.e. independence between both hydraulic and sludge retention time) and a smaller footprint. Fed with a mass ratio of 40% OMWW/60% glucose, MBR biomass showed efficient chemical oxygen demand and polyphenols removal rates of, respectively, 90 and 65% despite a low activity of 3.2 mgO2 gMLVSS−1 h−1 due to the harsh and toxic environment. Moreover, HPLC analysis has showed a removal from the permeate of the major phenolic compounds including hydroxytyrosol, tyrosol, and caffeic acid. The monitoring of SMP concentrations has contributed to identify the presence of an environmental stress during OMWW input. Polysaccharide and protein are the main SMP fractions released with, respectively, 10 ± 0.1–20 ± 0.5 mg gMLVSS−1 and 4 ± 0.01–8 ± 0.01 mg gMLVSS−1. These SMP and higher molecular weight compounds brought by OMWW were found to be partially responsible for the intensive membrane fouling obtained. The feasibility of biomass acclimation directly to OMWW composed of multi-phenolic compounds was proved in MBR and its constraints were discussed. Microfiltration membrane would be suggested to overcome the constraints observed when ultrafiltration membrane was used (150 kDa). |
| Databáze: | OpenAIRE |
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