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Modified cellulose fibres

Turbak, A. F., ed. (1977). Solvent Spun Rayon, Modified Cellulose Fibres and Derivatives," ACS Symposium Series, No. 58. Am. Chem. Soc., Washington, D.C. [Pg.189]

The Use of Modified Cellulose Fibres as a Sorbent for the Organic Pollutants Removal... [Pg.491]

Surfactant-modified cellulose fibres appeared to be effective sorbents for the removal of organic compounds dissolved in aqueous media. Given the ready availability of this type of substrate and its low cost, the present approach could be promising in applications related to the removal of organic pollutants and toxic substances in wastewaters. However, the adsorbed surfactant molecules were found to desorb from the cellulose surface during the recycUng of the substrate [29], limiting its possible use for multiple adsorption cycles in a... [Pg.496]

The adsorption isotherms were fitted with the Langmuir model, from which the adsorption equilibrium constant K, as well as the maximum concentration of the solute uptake are established. The substrates can be easily recycled permanently by washing with ethanol or acetone without losing their adsorption capacity. This finding is one of the greatest advantages of such modified cellulose fibres compared to other much more conventional adsorbents such... [Pg.500]

Figure 17.11 Equilibrium adsorption isotherms of different organic solutes onto (a), (b) modified cellulose fibres via esterification with octyl anhydride, and (c) virgin fibres, as a function of the equilibrium solute concentration at pH 6.5-7 and room temperature, (reproduced from reference [51]). (Continued)... Figure 17.11 Equilibrium adsorption isotherms of different organic solutes onto (a), (b) modified cellulose fibres via esterification with octyl anhydride, and (c) virgin fibres, as a function of the equilibrium solute concentration at pH 6.5-7 and room temperature, (reproduced from reference [51]). (Continued)...
The adsorption properties of the modified cellulose fibres were also investigated under continuous condition using a filtration column filled with cellulose fibres modified by esterification with octanoic anhydride. The ratio (Cs/CO) of... [Pg.501]

The regeneration of saturated modified cellulose fibres has been carried out using water/ethanol solution. The new adsorbent can be regenerated easily and reused for multiple cycles of treatment without any reduction of its adsorption capacity. [Pg.503]

Luminescence measurements had shown that in addition to Wan der Waals interactions, the adsorption of polar molecules on the modified cellulose fibres involves polar and hydrogen bonding with the cellulose AGUs [34, 35]. [Pg.510]

The applicability of the isotherm equations was compared on the basis of correlation coefficient, R. Table 17.7 gathers together results deduced from Langmuir and Freundlich isotherms for a series of modified cellulose fibres. [Pg.516]

Table 17.7 Lai gmuir and Freudlich constants of the adsorption different organic solutes on modified cellulose fibres -. ... Table 17.7 Lai gmuir and Freudlich constants of the adsorption different organic solutes on modified cellulose fibres -. ...
Boufi Sami, is Professor at the Department of Chemistry of the University of Sfax (FSS). His research activities include chemical modification of cellulose and carbohydrate materials, the synthesis of functional polymer for colloidal chemistry, and the exploitation of chemically modified cellulose fibres as reusable adsorbent for dissolved organic pollutants. [Pg.521]

F. Aloulou, S. Boufi, and J. Labidi, "Modified cellulose fibres for adsorption of organic compound in aqueous solution". Separation and Purification Technology, Vol. 52, pp. 332-342,2006. [Pg.523]

S. Alila and S. Boufi, "Removal of organic pollutants from water by modified cellulose fibres", Ind. Crops Prod., Vol. 30, issu 1, pp. 93-104,2009. [Pg.523]

L.F. Vieira Ferreira, A.l. Costa, I.L. Ferreira Machado, T.J.F. Branco, S. Boufi, M. Rei-Vilar, and A.M. Botelho do Rego, "Surface Photochemistry Benzophenone as a Probe for the Study of Modified Cellulose Fibres", Research Letters in Physical Chemistry, Vol. 2007, Article ID 18278, 5 pages, 2007. [Pg.524]

Aloulou, F., Boufi, S., and Labidi, J. (2006). Modified cellulose fibres for adsorption of organic compound in aqueous solution, Sep. Purif. TechnoL, 52, 332-342. [Pg.135]

Figure 13.8 Solid-state C-NMR spectra of sugar cane leaves and modified cellulose fibre (author s experiment). Figure 13.8 Solid-state C-NMR spectra of sugar cane leaves and modified cellulose fibre (author s experiment).
Figure 13.22 Possible mechanism of NR containing the modified cellulose fibre with silane (modified from ref. 11). Figure 13.22 Possible mechanism of NR containing the modified cellulose fibre with silane (modified from ref. 11).
Felix JM, Gatenhohn P (1991) The nature of adhesion in composites of modified cellulose fibres and polypropylene. J Appl Polym Sci 42 609-620... [Pg.288]

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See also in sourсe #XX -- [ Pg.491 , Pg.497 ]



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