Charcoal cloth

Product Hterature on activated carbon cloth. Charcoal Cloth Ltd., UK, 1985, and on C-tex products, Siebe Gorman Co., Ltd., UK, 1985. 

Starek, J., Zukal, A. and Rathousky, J., Comparison of the adsorption of humic acids from aqueous solutions on active carbon and activated charcoal cloths. Carbon, 1994, 32(2), 207 211. 

Activated carbon is also available in special forms such as a cloth and fibres. Activated Charcoal Cloth (ACC) represents a family of activated carbons in cloth form. These products are fundamentally unique in several important ways compared with the traditional forms of activated carbon and with other filtration media that incorporate small particles of activated carbon. Developed in the early 1970 s ACC products are... 

Charcoal cloths A filter manufactured from pretreated woven cellulose fiber cloth. 

Figure 9.13. Nitrogen adsorption isotherms ar 77 K (a) and corresponding as plots (b) for charcoal cloth JF012 after prc-adsoiption of nonane followed by outgassing at indicated temperature (after Carrott etal., 1989).

Adsorption isotherms and corresponding as plots for charcoal cloth JF005 (open symbols, adsorption solid symbols, desorption) (Carrott et al ... 

Figure 12.1. Adsorption-desorption isotherms of (a) nitrogen at 77 K, (b) toluene at 20°C and (c) water at 21°C, on AMOCO carbon PX21 (A) and charcoal cloth AM4 (Q (Atkinson et al., 1982).

The Type I character of the nitrogen and toluene isotherms displayed in Figure 12.1 indicates that a typical sample of activated charcoal cloth produced by the original Porton process had novel adsorbent properties. The activated material was strong and flexible and had a BET area of over 1200 m2 g 1, a wide distribution of micropores (no detectable mesoporosity) and a small external surface area (Atkinson et al., 1982 Hall and Williams, 1986). In view of its early promise, it was logical to attempt to control the pore structure of charcoal cloth. A systematic study of the development of porosity was therefore undertaken by Atkinson et al. (1982, 1984) and Freeman etal. (1987-1991). 

Advanced wound management products containing silver have been developed to treat difficult-to-heal wounds, chronic ulcers, and extensive burns. Odor absorbing dressings adsorb polarized bacteria onto the surface of the charcoal cloth used in the formulation. The silver present in the dressing exerts a bactericidal effect that gradually diminishes as wound exudate saturates the material. 

Reference data for the adsorption of benzene, dichloromethane and methanol have been used to construct as plots for the adsorption of these vapoius on Carbosieve, Takeda molecular sieve carbons, Maxsorb superactivated carbons and a charcoal cloth. It is shown that the as method can give satisfactory results when applied to organic adsorptives provided that good quality adsorption data at higher pressures is available. It is also shown how analysis of the as plots can lead to useful information about the pore structure of the different types of carbon, and some of the difficulties associated with the use of nitrogen adsorption at 77K for the characterisation of microporous carbons are discussed. 

Exhaled air Collection in charcoal cloth wafers GC/FID 2 mg/m3 89-120 Glaser and Arnold 1989... 

Glaser RA, Arnold JE. 1989. Investigation of charcoal cloth as a sorbent for integrated sampling of solvent vapors in mixed-expired breath using a new stainless steel sampler. Am Ind Hyg Assoc J 50 112-121. 

Purnell, C. J., Wright, M. D., Brown, R. H. Performance of the Porton Dovm Charcoal Cloth Diffusive Sampler, Analyst (London) 106, 590 (1982)... 

Kaltocarb (calcium alginate fibre bonded to a layer of activated charcoal cloth with an outer layer composed of spun bonded viscose, ConvaTec) is indicated for use as a primary dressing in the management of malodorous wounds including fungating carcinomas, leg ulcers, and pressure sores. 

Rebouillat el al [4] and Suzuki [5] give good reviews of activated carbon fibers. Traditionally, activated carbon granules are made by the carbonization of a product such as coconut shells, which due to their physical granular form, tend to be difficult to handle and the development of an activated woven cloth by the British Chemical Defence Establishment at Porton Down [6,7] via the controlled heat treatment of a woven rayon cloth offers many advantages. The activated charcoal cloth (ACC) product was made under licence in 1977, by Charcoal Cloth Ltd. One such process used a 1.8 m wide fabric, reducing to about 1.0 m at the end of the process. To aid carbonization, the cloth was treated with a solution of chemicals to confer a measure of flame retardancy. As explained in Chapter 6, there are two forms of flame retardant—one where the flame retardant acts as a catalyst and promotes removal of the —OH groups and the other form, which actually reacts with the —OH... 

Capon A, Maggs FAP, Robins GA, The mechanical properties of charcoal cloth, J Phys Appl Phys, 13, 897-907, 1980. 

Technical literature from Charcoal Cloth (International) Ltd., Tyne and Wear, UK. 

Capon A, Maggs PAP and Robins GA (1980), The mechanical properties of activated charcoal cloth, Journal of Physics D Applied Physics, 13(4), pp. 897-907. 

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