Development of the MFI-UF in constant flux filtration

Boerlage, Śiobhàn F.E.; Kennedy, Maria D.; Tarawneh, Zeyad; Faber, Rueban De; Schippers, Jan C.

doi:10.1016/s0011-9164(04)90046-x

Cited by 87 publications

(41 citation statements)

References 7 publications

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“…Since MFI includes the solid concentration s in feed water (Park et al, 2006), it is more convenient than the average specific filtration resistance α av to evaluate the fouling potential of feed water in which the solid concentration is unknown. In order to evaluate the fouling potential of smaller colloidal particles or macromolecules, MFI was developed by using ultrafiltration membranes and nanofiltration membranes (referred to as MFI-UF (Boerlage et al, 2002(Boerlage et al, , 2003(Boerlage et al, , 2004 and MFI-NF (Khirani et al, 2006), respectively). Jin et al (2015) proposed the cake fouling index (CFI) in which the true fouling cake layer resistance can be accurately evaluated by eliminating the effect of pore blocking.…”

Section: Evaluation Of Degree Of Membrane Foulingmentioning

confidence: 99%

Developments of Blocking Filtration Model in Membrane Filtration

Iritani

Katagiri

2016

KONA

121

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Blocking filtration laws consist of four different filtration mechanisms: complete blocking, standard blocking, intermediate blocking, and cake filtration. Blocking filtration laws for describing both the pore blocking and cake formation have been extensively employed over the past several decades to evaluate the increase in filtration resistance with the progress of filtration in the field of classical particulate filtration. In recent years, blocking filtration laws become widely used also in membrane filtration such as microfiltration and ultrafiltration of colloids. This paper gives an overview of the developments of blocking filtration laws and equations under constant pressure and constant rate conditions reported for the filtrate flow of Newtonian and non-Newtonian fluids. The fouling index evaluating the degree of membrane fouling was examined on the basis of the blocking filtration equations. The blocking filtration laws were reexamined to extend the range of their application. Moreover, various combined models developed based on the blocking filtration laws were introduced for describing more rigorously the complicated filtration behaviors controlled by more than one mechanism which occurs successively or simultaneously.

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Section: Evaluation Of Degree Of Membrane Foulingmentioning

confidence: 99%

Developments of Blocking Filtration Model in Membrane Filtration

Iritani

Katagiri

2016

KONA

121

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“…S.F.E. Boerlage et al [40] further developed the MFI − UF const. pressure in order to adapt it to constant flux conditions.…”

Section: Indices Derived From Mfimentioning

confidence: 99%

A Critical Review on Predicting Fouling in RO Desalination

Ruiz-García¹,

Melián-Martel²,

I³

2017

Preprint

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RO membrane fouling is one of the main challenges that membrane manufactures, the scientific community and industry professionals have to deal with. The consequences of this inevitable phenomenon have a negative effect on the performance of the desalination system. Predicting fouling in RO systems is key to evaluating the long-term operating conditions and costs. Much research has been done on fouling indices, methods, techniques and prediction models to estimate the influence of fouling on the performance of RO systems. This paper offers a critical review evaluating the state of industry knowledge in the development of fouling indices and models in membrane systems for desalination in terms of use and applicability. Despite major efforts in this field, there are gaps in terms of effective methods and models for the estimation of fouling in full-scale RO desalination plants. In existing models applied to full-scale RO desalination plants, neither the spacer geometry of membranes nor the efficiency and frequency of chemical cleaningswhich play an important role in the performance of this process -are considered.

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“…In addition, it became clear that the predictive value of MFI measured at constant pressure was limited. For these reasons, MFI test measured at constant flux with ultrafiltration membranes (MFI-UF) was eventually developed over the last decade (Boerlage et al, 2004;Boerlage et al, 2000;Salinas Rodriguez et al, 2012). A comparison of the reduction of fouling potential as measured by MFI-UF in pretreatment systems is presented in Table 4.…”

Section: Particulate/organic Fouling Potentialmentioning

confidence: 99%