Filter made of cuprammonium regenerated cellulose for virus removal: a mini-review

Ide, Shoichi

doi:10.1007/s10570-021-04319-2

Cited by 11 publications

(4 citation statements)

References 49 publications

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“…152 With respect to cellulose derivatives used for water filtration, cellulose acetate and other derivatives are important materials. Indeed, there have even been some commercial regenerated cellulose-based products for extraction of viruses, such as Planova by Asahi Kasei, 153 and a wide range of cellulose esters made by Eastman. 154 A full description of these technologies is however beyond the scope of this article because we mostly deal with nanocellulose.…”

Section: Cellulose Used In Water Filtrationmentioning

confidence: 99%

Cellulose: A Review of Water Interactions, Applications in Composites, and Water Treatment

et al. 2023

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Cellulose is known to interact well with water, but is insoluble in it. Many polysaccharides such as cellulose are known to have significant hydrogen bond networks joining the molecular chains, and yet they are recalcitrant to aqueous solvents. This review charts the interaction of cellulose with water but with emphasis on the formation of both natural and synthetic fiber composites. Covering studies concerning the interaction of water with wood, the biosynthesis of cellulose in the cell wall, to its dispersion in aqueous suspensions and ultimately in water filtration and fiber-based composite materials this review explores water−cellulose interactions and how they can be exploited for synthetic and natural composites. The suggestion that cellulose is amphiphilic is critically reviewed, with relevance to its processing. Building on this, progress made in using various charged and modified forms of nanocellulose to stabilize oil−water emulsions is addressed. The role of water in the aqueous formation of chiral nematic liquid crystals, and subsequently when dried into composite films is covered. The review will also address the use of cellulose as an aid to water filtration as one area where interactions can be used effectively to prosper human life.

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Section: Cellulose Used In Water Filtrationmentioning

confidence: 99%

Cellulose: A Review of Water Interactions, Applications in Composites, and Water Treatment

et al. 2023

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“…Furthermore, inactivation efficacy is also affected by the physiochemical properties of the virus, such as the presence or absence of a viral envelope. Virus removal can be achieved through filtration using a virus removal filter to effectively remove viruses via size exclusion 10–14 . Virus filtration (VF) is superior to inactivation as it can remove a wide range of viruses regardless of their physiochemical properties.…”

Section: Introductionmentioning

confidence: 99%

“…Virus removal can be achieved through filtration using a virus removal filter to effectively remove viruses via size exclusion. [10][11][12][13][14] Virus filtration (VF) is superior to inactivation as it can remove a wide range of viruses regardless of their physiochemical properties. Moreover, VF does not apply undue stress to proteins.…”

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confidence: 99%

Size‐based analysis of virus removal filter fouling using fractionated protein aggregates

Tsukamoto,

Hamamoto,

Oguri

et al. 2023

Biotechnology Progress

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Fouling by protein aggregates reduces virus removal filter performance. In the present study, we investigated the effects of different‐sized protein aggregates on fouling and aggregate retention in order to better understand the fouling mechanisms. Human immunoglobulin G was denatured by heating to produce aggregates of various sizes and then fractionated by size exclusion chromatography into different‐sized aggregates with a narrow size distribution. The fractionated aggregates were filtered on Planova 20N, a virus removal filter known for its stable filtration capability. Analysis of flux behavior demonstrated different flux decrease patterns for different‐sized aggregates. Observation of aggregate retention by staining revealed that larger aggregates were captured closer to the inner surface of the membrane while smaller aggregates penetrated farther into the membrane. These findings demonstrate that Planova 20N has a gradient structure with decreasing pore size from the inner to the outer surface of the membrane. This structure minimizes fouling and enables stable filtration by protecting the smaller pores located closer to the outer surface from clogging by large aggregates. Applying the predominant clogging models to the present filtrations revealed that clogging behavior transitioned from complete blocking to cake filtration as filtration progressed. In this combination model, after a certain number of pores are blocked by complete blocking, newly arrived aggregates begin to accumulate on previously captured aggregates, generating cake between capture layers within the membrane. Application of the approaches described here will facilitate elucidation of membrane fouling and virus removal mechanisms.

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“…It is well-known that the membrane separation technology has been focused in various fields, such as biomedical [1] , petrochemical industry [2] , and environmental protection [3] etc. Among the many kinds of membrane forms, polymer hollow fiber membranes are regarded as the most popular part in the membrane application process due to simple operation, easily assemble, and small foot space and so on [4][5][6] . However, the hollow fiber membranes by wet-spinning method usually occurred breaking, flattening and peeling in filtration process owing to hydraulic flushing and membrane shaking [7][8] .…”

Section: Introductionmentioning

confidence: 99%

Fabrication of robust homogeneous braid reinforced CA hollow fiber membranes with enhanced hydrophilicity

Zhao

Jin

Sun

et al. 2023

Preprint

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Cellulose acetate (CA) membrane is usually utilized in wastewater treatment and biomedical process due to its good biocompatibility and easy processing but low flux and poor anti-fouling. The hydrophilicity and anti-fouling property of membrane could be improved through the doping of functional nanoparticles. Herein, the robust homogeneous braid reinforced (HBR) CA hollow fiber membranes with GO doping were fabricated by the continuous skin-core spinning method. The content of GO exhibited noticeable effects on the structure and property of HBR CA hollow fiber membranes. On the one hand, the neatly arranged finger-like pore structure and good permeability could be designed. On the other hand, the high protein rejection and anti-fouling property were obtained. For example, the pure water flux and BSA rejection could be obviously improved from 115.7 L·m-2·h-1 to 201.4 L·m-2·h-1, 97.2% to 99.5% respectively. The optimal GO content was 0.1 wt.% according to the assessment of flux decline coefficient, flux recovery rate and BSA rejection. Moreover, the HBR structure provided favorable interface bonding strength and excellent mechanical strength, which was suitable for the high pressure backwash and aeration process in filtration system. In a word, the HBR CA hollow fiber membrane with good hydrophilicity and anti-fouling property showed potential applications for wastewater treatment and biomedical process.

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Filter made of cuprammonium regenerated cellulose for virus removal: a mini-review

Cited by 11 publications

References 49 publications

Cellulose: A Review of Water Interactions, Applications in Composites, and Water Treatment

Cellulose: A Review of Water Interactions, Applications in Composites, and Water Treatment

Size‐based analysis of virus removal filter fouling using fractionated protein aggregates

Fabrication of robust homogeneous braid reinforced CA hollow fiber membranes with enhanced hydrophilicity

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