[article]
| Titre : |
Modification of collagen for high Cr(III) adsorption |
| Type de document : |
texte imprimé |
| Auteurs : |
Zhaoyang Luo, Auteur ; Bi Shi, Auteur ; Yuansen Liu, Auteur ; Haojun Fan, Auteur ; Zhang Xiuli, Auteur |
| Année de publication : |
2009 |
| Article en page(s) : |
p. 149-155 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
Collagen has an ability to coordinate with chromium (III) salts which is mostly determined by the amount of pendent carboxyl groups on the backbone of collagen. Based on this principle, when an oxazolidine derivative which contains carboxyl group and oxazolidine rig was sinthesized and used as a modification agent, a novel collagen fiberbased high Cr (III) adsorption material was developed. In contrast to unmodified collagen fiber, the hydrothermal stability of the modified collagen fiber increased from 63.1°C to 78.8°C and the maximum adsorption capacity (A max) of Cr3+ increased from 41mg/G(Cr3+/collagen) with a pH value of 4.0. In the waste water from a leather tannery treated with the modified collagen fiber, the Cr2O3 content decreased from 1.76/L to 0.06g/L. Investigation of high chromium adsorption mechanism indicates that the increased number of carboxyl groups attached to the backbone of collagen and the intrinsic carboxyl groups of collagen coordinate together with chromium (III) and form ui- or multi-point bound chromium complexes, which seems to contribute to the modified collagen high chromium (III) adsorption. |
| En ligne : |
https://drive.google.com/file/d/17DaW2SoRgqBhQl4fw1JbOeE-PabaVk-2/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4808 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CIV, N° 4 (04/2009) . - p. 149-155
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Modification of collagen for high Cr(III) adsorption in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIV, N° 4 (04/2009)
