Interplay of different NOM fouling mechanisms during ultrafiltration for drinking water production

Jermann, Doris; Pronk, Wouter; Meylan, Sébastien; Boller, Markus

doi:10.1016/j.watres.2006.12.030

Cited by 372 publications

(186 citation statements)

References 26 publications

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“…Organic fouling results from the deposition of natural organic matter (NOM) on the membrane surface like carboxylic acid, humic acid (HA), alginate acid (AA), proteins, polysaccharides, etc. The principal constituents of NOM are the humic substances, which are found in surface water, ground water and seawater, followed by carbohydrates (including polysaccharides), protein and a variety of acidic and low molecular weight (LMW) species [40,60,61]. This fouling is dependent on several factors including the surface characteristics of the membrane.…”

Section: Fouling In MDmentioning

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: Fouling In MDmentioning

confidence: 99%

Fouling in Membrane Distillation, Osmotic Distillation and Osmotic Membrane Distillation

et al. 2017

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“…Jermann et al [16] revealed the impact of molecular interactions between HA and SA on UF fouling mechanisms. This effort led to the conclusion that a mutual influence could affect each other due to steric effects and chemical interactions.…”

Section: Introductionmentioning

confidence: 99%

Identification of key factors affecting the organic fouling on low-pressure ultrafiltration membranes

Xiao

Zhang

et al. 2013

Journal of Membrane Science

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“…It was reported that humic substances and low molecular weight organics are the main constituents of NOM present in natural water sources such as surface water, ground water and seawater [20]. Furthermore, humic acid (HA) has been identified as the principal NOM foulant in membrane processes [21].…”

Section: Introductionmentioning

confidence: 99%

Humic acid fouling mitigation by ultrasonic irradiation in membrane distillation process

Hou

Zhang

Wang

et al. 2015

Separation and Purification Technology

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a b s t r a c tA novel ultrasonic assisted direct contact membrane distillation hybrid process was designed and the effect of ultrasonic irradiation on humic acid (HA) fouling mitigation during membrane distillation process was investigated. Although permeate flux declines were negligible (less than 5%) for the ranges of HA concentration studied, ultrasonic irradiation could enhance the permeate flux more than 30% without destroying HA rejection. The higher the concentration factor was, the larger the ultrasonic enhancement of permeate flux could be obtained. Severe permeate flux decline can be found when CaCl 2 was added into the HA solution. The presence of Ca 2+ would aggravate HA organic fouling phenomenon and resulted in a thick and dense HA fouling layer on membrane surface. The HA fouling increased heat transfer resistance and reduced the pores available for vapor transfer, both the permeate flux and thermal efficiency of the PTFE membrane declined. Under ultrasonic irradiation, ultrasonic wave refreshed the liquidmembrane interface continuously and alleviated the deposition of HA aggregates. Therefore, although there were still some HA fouling scattered on membrane surface, most of the membrane pores could be kept open and clean, the relative permeate flux can maintain above 94% and was hardly affected by concentration factor increasing.

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Interplay of different NOM fouling mechanisms during ultrafiltration for drinking water production

Cited by 372 publications

References 26 publications

Fouling in Membrane Distillation, Osmotic Distillation and Osmotic Membrane Distillation

Fouling in Membrane Distillation, Osmotic Distillation and Osmotic Membrane Distillation

Identification of key factors affecting the organic fouling on low-pressure ultrafiltration membranes

Humic acid fouling mitigation by ultrasonic irradiation in membrane distillation process

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