Modeling of membrane fouling and flux decline in reverse osmosis during separation of oil in water emulsions

Mohammadi, Toraj; Kazemimoghadam, Mansoor; Saadabadi, M.

doi:10.1016/s0011-9164(03)00419-3

Cited by 169 publications

(93 citation statements)

References 12 publications

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“…The porous membrane matrix can promote coalescence of micron and submicron oil droplets into larger ones that can be easily separated by gravity. Common membrane separation techniques employed for the separation of oil from oily wastewater are: (i) microfiltration , (ii) pervaporation (Mohammadi et al, 2003;Hlavacek, 1995), (iii) electrocoagulation (Ghosh et al, 2010), (iv) reverse osmosis (Duong and Chung, 2014;Mahendran et al, 2004) and (v) ultrafiltration (Nandi et al, 2009;Sarkar and De, 2010;Singh et al, 2011). However, few studies addressed the application of polysulfone (PSf) membranes in wastewater treatment.…”

Section: Introductionmentioning

confidence: 99%

Oil Removal from Produced Water by Ultrafiltration using Polysulfone Membrane

Kumar

Nandi

Guria

et al. 2017

Braz. J. Chem. Eng.

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-The present paper deals with the ultrafiltration (UF) of produced water using a polysulfone membrane. Membranes were prepared by the phase inversion technique using polysulfone (PSf) polymer base, poly vinyl pyrrolidone (PVP) additive and N-methyl-2-pyrrolidone (NMP) solvent. Prepared UF membranes were characterized by determining the surface morphology by scannaing electron microscopy (SEM), atomic force microscopy (AFM), porosity, (iii) water contact angle, equilibrium water content and pure water flux, whereas membrane performance was determined by measuring permeate flux and oil rejection using oily synthetic produced water. With the increase in trans-membrane pressure in the cell, the permeate flux increased significantly, but oil rejection showed a decreasing trend. The best UF membrane performance under different trans-membrane pressures was obtained by maintaining ≥90% oil rejection using an UF membrane with the following composition: PSf-15%, PVP -5% and NMP -80%.

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Section: Introductionmentioning

confidence: 99%

Oil Removal from Produced Water by Ultrafiltration using Polysulfone Membrane

Kumar

Nandi

Guria

et al. 2017

Braz. J. Chem. Eng.

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“…Permeate flux (J) is the amount of sample collected per unit area per unit time. It was calculated by dividing the volume of permeate collected (V) divided by the product of effective membrane area (A) and time (t) [9].…”

Section: B Experimental Setup and Proceduresmentioning

confidence: 99%

“…Permeate flux versus time curves were analyzed using modified form of Hernia"s model [9] to evaluate the flux decline mechanism. Permeate flux profile of RO with and without MF pre-treatment is shown in Fig.…”

Section: Mf-ro Combined Treatment At Optimized Conditionsmentioning

confidence: 99%

“…Permeate flux is a measure of membrane performance and it decreases due to the fouling of the membranes [17]. The best fit model for RO membrane fouling followed the intermediate blocking filtration equation, which assumes that all the particles don"t block the membrane pores but settle on other particles [9]. The intermediate blocking filtration model equation is given as:…”

Section: Mf-ro Combined Treatment At Optimized Conditionsmentioning

confidence: 99%

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MF as Pretreatment of RO for Tertiary Treatment of Biologically Treated Distillery Spentwash

Sharma¹,

Joshi²

2016

IJESD

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Abstract-Biologically treated spentwash from distillery usually contains high chemical oxygen demand (COD), biological oxygen demand (BOD), color, total dissolved solids (TDS) and other contaminants. In India, reverse osmosis (RO) treatment plants have been installed in many of the distilleries at tertiary treatment, but are not properly working due to fouling problem. To make the membrane process proven and reliable technology, proper pre-treatment is mandatory which not only improve quality of RO permeate but also increase life of RO. In the present study, use of micro-filtration (MF) for pre-treatment of RO has been evaluated at the tertiary treatment stage. Experiments were optimized in terms of different operating parameters viz. initial pH (pH o : 2-10), trans-membrane pressure (1-5 bars) and temperature (15-43°C). Experimental data revealed that the MF could be an effective pre-treatment in removing the pollutants (COD, color and TOC) and improving performance and water recovery (permeate flux) in comparison to RO alone. Removal efficiency for COD, color, TDS and TOC was observed as 31.5%, 42.7% and 27.6% with MF, respectively at optimized conditions with increased permeate flux from 17. LPH (RO) to 32 LPH (MF-RO).Index Terms-Bio-digested distillery spentwash, life cycle assessment, pre-treatment, reverse osmosis, response surface methodology, micro-filtration.

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“…Las moléculas de soluto contenidas en la disolución alimento que producen este tipo de ensuciamiento son más pequeñas que el poro, de forma que originan un bloqueo interno del mismo (Mohammadi et al, 2003).…”

Section: Ec 27unclassified

Modelado dinámico de procesos de ultrafiltración tangencial aplicados a la separación de macromoléculas.

Vela¹,

Cinta²

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Modeling of membrane fouling and flux decline in reverse osmosis during separation of oil in water emulsions

Cited by 169 publications

References 12 publications

Oil Removal from Produced Water by Ultrafiltration using Polysulfone Membrane

Oil Removal from Produced Water by Ultrafiltration using Polysulfone Membrane

MF as Pretreatment of RO for Tertiary Treatment of Biologically Treated Distillery Spentwash

Modelado dinámico de procesos de ultrafiltración tangencial aplicados a la separación de macromoléculas.

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