Magnetic resonance imaging and 3D simulation studies of biofilm accumulation and cleaning on reverse osmosis membranes

Creber, S.A.; Pintelon, T.R.R.; Schulenburg, D.A.W. Graf von der; Vrouwenvelder, Johannes S.; Loosdrecht, M.C.M. van; Johns, Michael L.

doi:10.1016/j.fbp.2010.08.010

Cited by 53 publications

(17 citation statements)

References 17 publications

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“…MRI is known in medical applications, but also explored in technical and scientific processes and filtration. [4][5][6][7][8][9][10][11][12][13][14][15][16][17] In this arti cle, MRI is used for the in situ, time resolved observation of the filtration progress in CHFM lumen. Especially the time evolution and the nature of the deposit is of major interest.…”

Section: Introductionmentioning

confidence: 99%

In‐situcharacterization of deposits in ceramic hollow fiber membranes by compressed sensing RARE‐MRI

et al. 2018

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Ultrafiltration with ceramic hollow fiber membranes was investigated by compressed sensing rapid acquisition relaxation enhancement (CS-RARE) magnetic resonance imaging (MRI) to characterize filtration mechanisms. Sodium alginate was used as a model substance for extracellular polymeric substances. Dependent on the concentration of divalent ions like Ca 21 in an aqueous alginate solution, the characteristics of the filtration change from concentration polarization to a gel layer. The fouling inside the membrane lumen could be measured by MRI with a CS-RARE pulse sequence. Contrast agents have been used to get an appropriate contrast between deposit and feed. The lumen was analyzed quantitatively by exploring the membrane's radial symmetry, and the resulting intensity could be modeled. Thus, different fouling mechanisms could be distinguished. CS-RARE-MRI was proven to be an appropriate in situ tool to quantitatively characterize the deposit formation during in-out filtration processes. The results were underlined by flux interruption experiments and length dependent studies, which make it possible to differentiate between gel layer or cake filtration and concentration polarization filtration processes.

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Section: Introductionmentioning

confidence: 99%

In‐situcharacterization of deposits in ceramic hollow fiber membranes by compressed sensing RARE‐MRI

et al. 2018

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“…In other words, it is the formation of biofilm to an unacceptable degree which could cause huge operational costs. Biofilm formation is essential in this process (Creber et al, 2010a). Biofouling is more complex than other fouling types.…”

Section: Biofoulingmentioning

confidence: 99%

A review of reverse osmosis membrane fouling and control strategies

Jiang

Li²

2017

Science of The Total Environment

711

362

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Reverse osmosis (RO) membrane technology is one of the most important technologies for water treatment. However, membrane fouling is an inevitable issue. Membrane fouling leads to higher operating pressure, flux decline, frequent chemical cleaning and shorter membrane life. This paper reviews membrane fouling types and fouling control strategies, with a focus on the latest developments. The fundamentals of fouling are discussed in detail, including biofouling, organic fouling, inorganic fouling and colloidal fouling. Furthermore, fouling mitigation technologies are also discussed comprehensively. Pretreatment is widely used in practice to reduce the burden for the following RO operation while real time monitoring of RO has the advantage and potential of providing support for effective and efficient cleaning. Surface modification could slow down membrane fouling by changing surface properties such as surface smoothness and hydrophilicity, while novel membrane materials and synthesis processes build a promising future for the next generation of RO membranes with big advancements in fouling resistance. Especially in this review paper, statistical analysis is conducted where appropriate to reveal the research interests in RO fouling and control.Graphic Abstract

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“…Figure 6 shows the distribution of the residual protein amount according to the location on the six membranes issued from the autopsied fouled spiral membrane. At first sight, 11 regardless of the membrane, the zone in close vicinity to the permeate collector axis is always the most fouled one. The other parts of the membranes are heterogeneously fouled.…”

Section: Physico-chemical Characterisationmentioning

confidence: 98%

“…Nevertheless, some recent studies attempt to overcome this conclusion coupling CFD calculations and in-situ analysis of fouling distribution in spiral membrane [9][10][11][12][13][14]. Graf von der Schulenburg et al [9] and Creber et al [10][11][12] studied the membrane fouling directly in spiral wounded membranes using nuclear magnetic resonance (NMR) for magnetic resonance imaging (MRI). This non-invasive technique enables quite thick biofilm to be identified (few microns) directly in a whole RO spiral element used for water treatment.…”

Section: Introductionmentioning

confidence: 99%

How the experimental knowledge of the irreversible fouling distribution can contribute to understand the fluid circulation in a spiral ultrafiltration membrane

Rabiller-Baudry

Diagne

Lebordais

2014

Separation and Purification Technology

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Magnetic resonance imaging and 3D simulation studies of biofilm accumulation and cleaning on reverse osmosis membranes

Cited by 53 publications

References 17 publications

In‐situcharacterization of deposits in ceramic hollow fiber membranes by compressed sensing RARE‐MRI

In‐situcharacterization of deposits in ceramic hollow fiber membranes by compressed sensing RARE‐MRI

A review of reverse osmosis membrane fouling and control strategies

How the experimental knowledge of the irreversible fouling distribution can contribute to understand the fluid circulation in a spiral ultrafiltration membrane

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