title: Analysis of nanoporous membrane fouling relying on experimental observation and theoretical model for landfill leachate treatment.
abstract: This paper is focused on the fouling behaviour of the ultrafiltration membrane for landfill leachate treatment. Natural organic matter fouling is considered a critical factor controlling the membrane performance. In this regard, the polyethersulphone nanoporous membrane was fabricated by phase inversion. In order to investigate the effects of operating conditions on fouling, landfilled leachate treatment was done at different transmembrane pressure and feed concentration. At high concentration of landfill leachate, the effect of operating pressure can be negligible. The maximum amount of RFR was 0.961 for raw landfill leachate. Flux decline data were also obtained for the filtration of landfill leachate. The rates of flux decline drastically dropped to about 46-48% of the initial values in the first 30 minutes of the experiment at all the examined pressures. The data were also analyzed using a model in order to provide explanations for simultaneous pore blockage and cake formation. The model showed very good agreement with the data for all transmembrane pressures and feed concentrations. The initial fouling due to pore blockage is related to the feed concentration at constant pressure, so by diluting the feed concentration, the effect of pore blocking was increased.
authors.affiliation: Membrane Research Group, Nanobiotechnology Institute, Babol University of Technology, Babol, Iran E-mail: majid.peyravi@nit.ac.ir.
authors.forename: Mohsen
authors.initials: M
authors.lastname: Jahanshahi
authors.affiliation: Membrane Research Group, Nanobiotechnology Institute, Babol University of Technology, Babol, Iran E-mail: majid.peyravi@nit.ac.ir.
authors.forename: Majid
authors.initials: M
authors.lastname: Peyravi
authors.affiliation: Membrane Research Group, Nanobiotechnology Institute, Babol University of Technology, Babol, Iran E-mail: majid.peyravi@nit.ac.ir.
authors.forename: Nader
authors.initials: N
authors.lastname: Shafaei
authors.affiliation: Membrane Research Group, Nanobiotechnology Institute, Babol University of Technology, Babol, Iran E-mail: majid.peyravi@nit.ac.ir.
authors.forename: Hatef
authors.initials: H
authors.lastname: Mirani
mesh_terms: D057219:Biofouling; D005374:Filtration; D008567:Membranes, Artificial; D008962:Models, Theoretical; D058608:Nanopores; D011108:Polymers; D011312:Pressure; D013450:Sulfones; D014462:Ultrafiltration / Q000295:instrumentation*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification
chemical_list: D008567:Membranes, Artificial; D011108:Polymers; D013450:Sulfones; D014874:Water Pollutants, Chemical; C022840:polyether sulfone