Highly porous, carbon fiber sorbents for hemo- and lymphosorption

Морозова, А. А.; Ermolenko, I. N.; Danilov, I. P.

doi:10.1007/bf00765142

Cited by 2 publications

(5 citation statements)

References 2 publications

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“…Atmospheric chemical agents are presented mainly in the form of toxic gases. Previous studies, have reported different methods for removing such gases [18][19][20][21][22][23]. The most important among these methods are: 1-By using fibrous filter alone or incorporated with adsorbent or sorbent materials [18].…”

Section: Introductionmentioning

confidence: 99%

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Nonwoven Nylon-6 Functional Filters for Protection from Air Pollutants

Shalaby

Al-Balakocy²,

Ibrahium

et al. 2019

Egypt. J. Chem.

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T HE present work aims to assess the effectiveness of Nylon-6 nonwoven fabrics containing antimicrobial substance (AS) and grafted with poly methacrylic acid (PMAA), polydimethylaminoethylmerthacrylate (PDMAEMA) and the blended fabric containing the above mentioned two types of nonwoven fabrics for air and gas filtration. The efficiency of the textile filters on the removal of anions and cations pollutants from the atmosphere of the selected indoor sites were studied under the normal conditions in the indoor environment. Air samples were collected before and after fitting the three tested types of textile nonwoven filters. The absorption method was used for collecting the gaseous pollutants, SO 2 , NO 2 and NH 3 , before and after filtration. The removal efficiency % of each filter was calculated. Nonwoven fabric containing 1:1wt/wt from two types of nonwoven fabrics showed high removal efficiency when applied for the collection of suspended anion and cation particulates.

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Section: Introductionmentioning

confidence: 99%

“…2-By catalitic conversion of volatile compound into less hazardous one on the fiber surface [19]. 3-By using for filtration modified with structuring agents fibers during wet or dry spinning [7,20,21]. 4-By using fibers impregnated with smaller, more active sorbent particles [22].…”

Section: Introductionmentioning

confidence: 99%

Nonwoven Nylon-6 Functional Filters for Protection from Air Pollutants

Shalaby

Al-Balakocy²,

Ibrahium

et al. 2019

Egypt. J. Chem.

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“…We know [5][6][7][8] that the benzene vapor sorption~esorption isotherms carry information on the character of the pore structure of SCFM. It can be used to obtain a number ofstructural-sorption characteristics: maximum adsorption pore volume (V), mesopore (Vme) and micropore (Vmi) volume, and specific area of mesopores (Sine).…”

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confidence: 99%

“…These properties of CFM allow using them in different areas of modern technology and in some cases, forr example, in creating construction materials, severe requirements are imposed on the physicomechanical indexes, while in other cases, the strength is not of decisive importance, but the adsorption [5][6][7][8], ion-exchange [9], or catalytic properties [10] are the most important. It is preferable to use less expensive CFM for manufacturing new CFM, so-called sorption-active materials (SCFM) [4,5].…”

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New carbon fibre adsorbents based on natural cellulose

Морозова¹,

Brezhneva²,

Anan'eva³

2000

Fibre Chem

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The expansion of the areas of application of carbon fibre materials (CFM) made it necessary to create new varieties with a number of valuable properties [1][2][3][4][5][6][7][8]. These properties of CFM allow using them in different areas of modern technology and in some cases, forr example, in creating construction materials, severe requirements are imposed on the physicomechanical indexes, while in other cases, the strength is not of decisive importance, but the adsorption [5][6][7][8], ion-exchange [9], or catalytic properties [10] are the most important. It is preferable to use less expensive CFM for manufacturing new CFM, so-called sorption-active materials (SCFM) [4,5]. However, there has recently been a trend toward sharply rising prices and a shortage of primary stock. The importance of using secondary resources of some textile products, for example, wastes from the flaxprocessing industry, has increased for this reason. In our opinion, the use of secondary stock (tow) from the flax-processing industry for manufacture of SCFM can be 2-3 times more efficient than using hydrated cellulose or polyacrylonitrile fibre materials. In addition, the study of thermal transformations of natural cellulose fibres is of both theoretical and applied importance, since it predetermines the possibility of regulating the processes of their thermooxidation.It should be noted that the effect of chemicaI reagents on pyrolysis of natural cellulose, wood in particular, has been the subject of many studies whose results are most completely summarized in [11][12][13][14]. As these studies showed, chemical reagents alter the temperature region of active pyrolysis of wood or polymer fibres, accelerate the process at lower temperatures, and change the activation energy of thermal reactions. The degree of the effect of the reagents is most frequently determined by the nature and to a lesser degree, the concentration of the additives.However, the effect of reagents in pyrolysis of natural cellulose is not limited to their effect on the parameters of pyrolysis alone. The quantitative and sometimes also the qualitative composition of the final product changes most frequently in carbonization of cellulose in the presence of inorganic, usually phnsphorus-containing additives [14]. The density and degree of order of the carbon matrix of the fibre simultaneously increases and its reactivity in subsequent treatments decreases [14,15].In the study examined below, carbonization and subsequent activation of natural cellulose fibre stock, in particular flax tow, were investigated by derivatographic, structural-sorption, and adsorption methods.Flax cloth (sarp cloth), nonwoven needle-punching material (NM), and flax sewing thread (GOST 11970.2-76) were used as the initial stock and NaH2PO 4, KH2PO4, and K2HPO 4 were selected as the inorganic additives. The criteria for selection of the phosphorus-containing additives were not only their effectiveness and availability, but also the technological effectiveness of their use for manufacturing CFM and ...

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Highly porous, carbon fiber sorbents for hemo- and lymphosorption

Cited by 2 publications

References 2 publications

Nonwoven Nylon-6 Functional Filters for Protection from Air Pollutants

Nonwoven Nylon-6 Functional Filters for Protection from Air Pollutants

New carbon fibre adsorbents based on natural cellulose

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