A review of fouling and fouling control in ultrafiltration

Fane, Anthony G.; Fell, C.J.D.

doi:10.1016/0011-9164(87)87013-3

Cited by 302 publications

(151 citation statements)

References 20 publications

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“…Membrane fouling, the process by which foulants, namely colloidal (e.g., clays, flocs), biological (e.g., bacteria, fungi), organic (e.g., oils, polyelectrolytes, humic substances), and scaling (e.g., mineral precipitates in RO systems) foulants, deposit onto the membrane surface or in the membrane pores [72,73], may take different forms, the main mechanisms of which are adsorption (physical and/or chemical), pore blocking, deposition of a cake layer, and gel formation [74][75][76][77][78][79]. The extent of fouling, which stems from the nature of foulant-membrane interaction, is a complex function of the feed characteristics (e.g., foulant type, foulant concentration, and physicochemical properties of the foulants such as the functional groups, charge, size, and conformation [72,[80][81][82]), operating conditions (e.g., inadequate pretreatment, inadequate control of the hydrodynamics of the system, excessive flux, and low cross-flow velocity (in cross-flow systems) [72,[82][83][84]), and membrane properties (e.g., pore-size distribution, surface roughness, charge properties, and hydrophobicity [70,[85][86][87]). …”

Section: Fouling and Concentration Polarization In Submerged Hf Systemsmentioning

confidence: 99%

The Performance and Fouling Control of Submerged Hollow Fiber (HF) Systems: A Review

et al. 2017

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Abstract:The submerged membrane filtration concept is well-established for low-pressure microfiltration (MF) and ultrafiltration (UF) applications in the water industry, and has become a mainstream technology for surface-water treatment, pretreatment prior to reverse osmosis (RO), and membrane bioreactors (MBRs). Compared to submerged flat sheet (FS) membranes, submerged hollow fiber (HF) membranes are more common due to their advantages of higher packing density, the ability to induce movement by mechanisms such as bubbling, and the feasibility of backwashing. In view of the importance of submerged HF processes, this review aims to provide a comprehensive landscape of the current state-of-the-art systems, to serve as a guide for further improvements in submerged HF membranes and their applications. The topics covered include recent developments in submerged hollow fiber membrane systems, the challenges and developments in fouling-control methods, and treatment protocols for membrane permeability recovery. The highlighted research opportunities include optimizing the various means to manipulate the hydrodynamics for fouling mitigation, developing online monitoring devices, and extending the submerged HF concept beyond filtration.

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Section: Fouling and Concentration Polarization In Submerged Hf Systemsmentioning

confidence: 99%

The Performance and Fouling Control of Submerged Hollow Fiber (HF) Systems: A Review

et al. 2017

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“…Membranes with sparse surface porosity can aggravate the effect of adsorption and fouling due to a large build-up of solute near the pores. (Fane & Fell, 1987) Upon increasing surface porosity, the solute accumulation will be spread more evenly, which will also decrease the fouling.…”

Section: Surface Porositymentioning

confidence: 99%

Membrane bioreactor for domestic wastewater treatment: principles, challanges and future research directions

Bilad

2017

IJOST

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Membrane bioreactors (MBRs) have recently become widely accepted as an advanced technology for treatment of domestic and industrial wastewaters. The objective of this review is to provide overview on MBR technology for wastewater treatment application. It includes discussions on the fundamental, core problems (membrane fouling), recent effective development approach (dynamic filtration systems) and future research direction of MBRs. Since MBRs integrate a conventional activated sludge process with membrane filtration, and both fundamental aspects are discussed first. Later, a comprehensive discussion about membrane fouling, the main problems in MBR, is provided, including fouling control strategies. The discussion on the MBR membranes and relation between membrane properties and MBR performance is also provided. This review also includes one of the most promising MBR technologies that specifically design to manage membrane fouling: dynamic filtration systems. Lastly, insight into an approach to address MBRs challenges and recent research and developments are provided.

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“…Three possible approaches have been utilised for the control of membrane fouling [29]. Application of hydrophilic and charged functional groups on the membrane surface can modify the behaviour to retard microorganisms and hydrophobic solutes.…”

Section: ) Feedwater Characteristicsmentioning

confidence: 99%

“…Generating permeate flux against time curves for different types of membranes in a VSEP system, data was shown to fit with a power law mode given by equation 1 This model was utilised to calculate k fouling indices at different vibrations [70]. A lower fouling indices corresponds to a reduced decline in initial permeate flux [29]. Lower fouling indices were observed when vibration was applied.…”

Section: Open Channel Bulk Fluid Flowmentioning

confidence: 99%

Review of high recovery concentrate management options

Leong

Tan

Charrois

et al. 2014

Desalination and Water Treatment

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Current methods of inland concentrate disposal include surface water discharge, deep well injection and evaporation ponds. These methods are unsustainable and are limited by high capital cost and non-ubiquitous application. This paper gives an overview of potential alternatives and technologies available that can reduce the concentrate formed via reducing its volume or recycling. Potential alternatives explored have been electrodialysis, mechanical evaporation, VSEP and WAIV. All technologies have potential for use in areas distant from the coast and have better performance than currents management techniques. This paper reviews multiple studies that have explored alternate technologies for concentrate disposal in terms of economics and feasibility. Of the 5 case studies presented, VSEP shows promise as a secondary system of treatment via enhancing percentage recovery; higher permeate flux and lower operational costs.

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A review of fouling and fouling control in ultrafiltration

Cited by 302 publications

References 20 publications

The Performance and Fouling Control of Submerged Hollow Fiber (HF) Systems: A Review

The Performance and Fouling Control of Submerged Hollow Fiber (HF) Systems: A Review

Membrane bioreactor for domestic wastewater treatment: principles, challanges and future research directions

Review of high recovery concentrate management options

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