Fouling-resistant membranes for water reuse

Rezakazemi, Mashallah; Dashti, Amir; Harami, Hossein Riasat; Hajilari, Nasibeh; Inamuddin, .

doi:10.1007/s10311-018-0717-8

Cited by 91 publications

(29 citation statements)

References 291 publications

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“…Major drawbacks of membrane fouling includes decline in permeation flux, selectivity change and reduction in membrane life during filtration operation. On the basis of nature of foulants and membrane processes fouling can be categorized into inorganic fouling, colloidal fouling, organic fouling and biofouling [36,37]. Thus, fabrication of fouling resistant membranes is a common strategy for fouling mitigation as it reduces foulants coagulation on membrane which results in clogging.…”

Section: Membrane Foulingmentioning

confidence: 99%

A Comprehensive Review on Polymeric Nano-Composite Membranes for Water Treatment

Zahid¹,

Rashid²,

Akram³

et al. 2018

J Membr Sci Technol

188

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During last few decades, membrane technology has emerged as an efficient technique over conventional methods due to its high removal capacity, ease in operation and cost effectiveness for wastewater treatment and production of clean water. Membrane based separations are commonly based on polymeric membranes because of their higher flexibility, easily pore forming mechanism, low cost and smaller space for installation as compared to inorganic membranes. Commonly employed membrane fabrication phase inversion method has been shortly reviewed in this article. Major limitation of membrane based separations is fouling and polymeric membranes being hydrophobic in nature are more prone to fouling. Fouling is a deposition of various colloidal particles, macromolecules (polysaccharides, proteins), salts etc. on membrane surface and within pores thus impedes membrane performance, reduces flux and results in high cost. Modification of polymeric membranes due to its tailoring ability with nanomaterials such as metal based and carbon based results in polymeric nano-composite membranes with high antifouling characteristics. Nanomaterials impart high selectivity, permeability, hydrophilicity, thermal stability, mechanical strength, and antibacterial properties to polymeric membranes via blending, coating etc. modification methods. Characterization techniques has also discussed in later section for studying morphological properties and performance of polymer nano-composite membranes. Graphical Abstract

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Section: Membrane Foulingmentioning

confidence: 99%

A Comprehensive Review on Polymeric Nano-Composite Membranes for Water Treatment

Zahid¹,

Rashid²,

Akram³

et al. 2018

J Membr Sci Technol

188

View full text Add to dashboard Cite

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“…The filter cake is probably caused by the adhesion of colloidal particles. Moreover, limiting transporting properties of NF membranes by organic compounds is associated with their adsorption on the surface of the membrane [66]. For the purposes of further analyses of the intensity of blocking pores and the level of its reversibility, it is necessary to extend the process in time.…”

Section: Resultsmentioning

confidence: 99%

“…In the context of POOLW purification, further analysis is necessary to develop a complete procedure for the NF process. Limitation of fouling can be achieved by pretreatment, change in the membrane material (including surface modification), change in operating parameters, and the use of cleaning methods [66].…”

Section: Resultsmentioning

confidence: 99%

Evaluation of the effect of body fluid analogs on the parameters of nanofiltration during the purification of swimming pool water

2019

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This study presents the possible application of membrane nanofiltration for purifying swimming pool water by removing compounds from human body secretions. The effect of the matrix (swimming pool, demineralized, tap water) on the analyzed pollutants was evaluated. We used asymmetric flat membranes (polyamide-thin film composite) in a dead-end filtration system. The effect of the matrix on the transport properties of the membranes was noticeable. A maximum reduction in value of permeate flux was obtained for 15.6 μL fluid analog solution/L of pool water. For all the analyzed matrices, a distinct reduction in the value of relative permeate flux was obtained along with an increase in the content of the investigated compounds in the feed. There was a marked increase in the separation properties along with an increase in the pollutants. The average value of the retention coefficient for total organic carbon was 87.21% and 79.67% for the concentrations of 3.90 and 15.60 μL fluid analog solution/L of pool water, respectively. This study provides evidence that further research into highly effective solutions for purifying pool water would be beneficial.

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“…In terms of structure, membranes are classified as non-porous and porous in which porous membranes provide better separation performance in terms of mass transfer flux due to the large pore size of membranes [22][23][24][25][26][27][28][29][30]. However, they do not have a high separation factor in molecular separation.…”

Section: Introductionmentioning

confidence: 99%