Inorganic fouling of pressure-driven membrane processes — A critical review

Shirazi, Saqib; Lin, Che‐Jen; Chen, Dong

doi:10.1016/j.desal.2009.02.056

Cited by 416 publications

(216 citation statements)

References 75 publications

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“…Then the sample is coated with a layer of gold, carbon or platinum by sputtering to render it electrically conductive [15,95]. It must be pointed out that due to both immersion in liquid nitrogen and coating, the fouled membrane sample limits the use of this technique for fouling characterization because it gives the sample some artifacts and damages changing the fouling layer characteristics [2,15,96]. More details on this technique can be found in [2,15].…”

Section: Scanning Electron Microscopy (Sem) and Energy Dispersive X-rmentioning

confidence: 99%

Fouling in Membrane Distillation, Osmotic Distillation and Osmotic Membrane Distillation

et al. 2017

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Various membrane separation processes are being used for seawater desalination and treatment of wastewaters in order to deal with the worldwide water shortage problem. Different types of membranes of distinct morphologies, structures and physico-chemical characteristics are employed. Among the considered membrane technologies, membrane distillation (MD), osmotic distillation (OD) and osmotic membrane distillation (OMD) use porous and hydrophobic membranes for production of distilled water and/or concentration of wastewaters for recovery and recycling of valuable compounds. However, the efficiency of these technologies is hampered by fouling phenomena. This refers to the accumulation of organic/inorganic deposits including biological matter on the membrane surface and/or in the membrane pores. Fouling in MD, OD and OMD differs from that observed in electric and pressure-driven membrane processes such electrodialysis (ED), membrane capacitive deionization (MCD), reverse osmosis (RO), nanofiltration (NF), ultrafiltration (UF), microfiltration (MF), etc. Other than pore blockage, fouling in MD, OD and OMD increases the risk of membrane pores wetting and reduces therefore the quantity and quality of the produced water or the concentration efficiency of the process. This review deals with the observed fouling phenomena in MD, OD and OMD. It highlights different detected fouling types (organic fouling, inorganic fouling and biofouling), fouling characterization techniques as well as various methods of fouling reduction including pretreatment, membrane modification, membrane cleaning and antiscalants application.

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Section: Scanning Electron Microscopy (Sem) and Energy Dispersive X-rmentioning

confidence: 99%

Fouling in Membrane Distillation, Osmotic Distillation and Osmotic Membrane Distillation

et al. 2017

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“…Hence, RO membranes exhibit significantly different fouling characteristics than MD membranes [3,14,18,19].…”

Section: Introductionmentioning

confidence: 99%

“…However, significant advancements are needed in membrane technology for MD to reach the theoretical cost competitiveness and develop market share growth [13]. Fouling in MD is of particular importance, as fouling increases costs of energy consumption, downtime, cleaning, required membrane area, required membrane replacement, and creates problems with product water contamination from pore wetting [14,15].…”

Section: Introductionmentioning

confidence: 99%

Scaling and fouling in membrane distillation for desalination applications: A review

et al. 2015

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“…Colloids are also implicated in membrane fouling, which we specifically refer to as colloidal fouling in the following discussion. Colloidal fouling is a phenomenon typical [31,34,35] but not exclusive to microfiltration processes [13,36,37]. It is influenced by some factors including colloidal particle size, applied pressure and the interaction with other colloidal particles that may be present in activated sludge [11,38,39].…”

Section: Implications Of Sio2 Nps Retention For Membrane Fouling In Amentioning

confidence: 99%

Retention of Silica Nanoparticles in a Lab-Scale Membrane Bioreactor: Implications for Process Performance and Membrane Fouling

Sibag

Lee

Kim³

et al. 2016

Water

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Abstract:In conventional activated sludge (CAS) involving aerobic biological processes, the retention of silica nanoparticles (SiO 2 NPs) has no detrimental effect on chemical oxygen demand (COD) and ammonia nitrogen (NH 3 -N) removal. However, for the membrane bioreactor (MBR) system, which is also based on the activated sludge process in addition to the membrane separation process, it has implications not only on the process performance but also on membrane fouling. To investigate these two implications in lab-scale experiments, we continuously operated a control MBR and two experimental MBRs, in which the 28 nm SiO 2 NPs and 144 nm SiO 2 NPs were added separately to the influent at a final concentration of 100 mg/L. Although the retention of SiO 2 NPs in the MBR, as confirmed by dynamic light scattering (DLS) analysis, did not compromise the COD and NH 3 -N removal, it resulted in substantial increases in the transmembrane pressure (TMP) suggesting the onset of membrane fouling. Analyses by batch-dead end filtration revealed the same fouling trend as observed during the continuous MBR experiments; membrane fouling is aggravated in the presence of SiO 2 NPs. This was evident from permeate flux decline of between 30% and 74% at very low TMP (5 kPa) and the further increases in the total resistance.

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Inorganic fouling of pressure-driven membrane processes — A critical review

Cited by 416 publications

References 75 publications

Fouling in Membrane Distillation, Osmotic Distillation and Osmotic Membrane Distillation

Fouling in Membrane Distillation, Osmotic Distillation and Osmotic Membrane Distillation

Scaling and fouling in membrane distillation for desalination applications: A review

Retention of Silica Nanoparticles in a Lab-Scale Membrane Bioreactor: Implications for Process Performance and Membrane Fouling

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