Seawater pretreatment by dead-end micro and ultrafiltration in pressure-driven inside feed

Julie Guilbaud, Anthony Massé, François-Charles Wolff and Pascal Jaouen ()
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Julie Guilbaud: GEPEA - Laboratoire de génie des procédés - environnement - agroalimentaire - Mines Nantes - Mines Nantes - UN UFR ST - Université de Nantes - UFR des Sciences et des Techniques - UN - Université de Nantes - ONIRIS - École nationale vétérinaire, agroalimentaire et de l'alimentation Nantes-Atlantique - CNRS - Centre National de la Recherche Scientifique
Anthony Massé: GEPEA - Laboratoire de génie des procédés - environnement - agroalimentaire - Mines Nantes - Mines Nantes - UN UFR ST - Université de Nantes - UFR des Sciences et des Techniques - UN - Université de Nantes - ONIRIS - École nationale vétérinaire, agroalimentaire et de l'alimentation Nantes-Atlantique - CNRS - Centre National de la Recherche Scientifique
Pascal Jaouen: GEPEA - Laboratoire de génie des procédés - environnement - agroalimentaire - Mines Nantes - Mines Nantes - UN UFR ST - Université de Nantes - UFR des Sciences et des Techniques - UN - Université de Nantes - ONIRIS - École nationale vétérinaire, agroalimentaire et de l'alimentation Nantes-Atlantique - CNRS - Centre National de la Recherche Scientifique

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Abstract: Low pressure microfiltration (MF) and ultrafiltration (UF) is used as seawater pretreatment before reverse osmosis membranes for capacity that ranged from 6,700 to 140,000 m 3 per day at Colakoglu Steel Mill (Turkey), Yu-Han (China), Kindasa (Saudi Arabia), Fukuoka (Japan), and Ad Dur (Bahrain). Among all modes of porous membrane filtration, pressure-driven inside feed configuration accounts for about 30% of all membrane configurations used for water and wastewater treatment. The present study deals with the MF and UF with hollow fiber membranes (polyacrylonitrile [PAN] 50 kDa, polyethersulfone [PES] 100 kDa, and polyvinylidene fluoride [PVDF] 0.1 lm) of seawater in pressure-driven inside feed configuration. Several cycles of filtration have been carried out at 100 L h À1 m À2 during 30 min for each followed by 30 s of permeate backwash at 250 L h À1 m À2. Microalgae-rich seawater has been prepared at laboratory which contained 30 g of salt, 1.2 Â 10 8 (+/À0.25 Â 10 8) of cells (Nannochloropsis oculata and Skeletonema costatum) per liter. The highest fouling resistance ranging from 1.57 to 3.25 Â 10 11 m À1 has been found for the PES membrane with an increase of the resistance value along filtration cycles. Whatever the used membrane, all microalgae have been retained and the backwash efficiencies to microalgae removal from membrane increased along filtration cycles. On the basis of these results, the 0.1 lm PVDF membrane seems to be more suitable to seawater membrane pretreatment.

Keywords: Seawater; Ultrafiltration; Microfiltration; Microalgae; Natural organic matter (search for similar items in EconPapers)
Date: 2013-01
Note: View the original document on HAL open archive server: https://hal.science/hal-03914257
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Published in Desalination and Water Treatment, 2013, 51 (1-3), pp.416 - 422. ⟨10.1080/19443994.2012.714890⟩

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Persistent link: https://EconPapers.repec.org/RePEc:hal:journl:hal-03914257

DOI: 10.1080/19443994.2012.714890

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