[article]
| Titre : |
Preparation of chrome liquor using chrome shavings as reducing agent |
| Type de document : |
texte imprimé |
| Auteurs : |
Cheng Fengxia, Auteur ; Ji Xianyong, Auteur ; Li Weihua, Auteur ; Zhang Yahong, Auteur ; Zhang Hanbo, Auteur |
| Année de publication : |
2005 |
| Article en page(s) : |
p. 217-224 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
Chrome-tanned waste produced in the leather industry would be a heavy burden to the ecological environment if stored without treatment. However, the collagen protein and chrome in leather shavings are both very precious resources and can be recycled. In this study, the high protein containing chrome shavings were utilized for the reduction of chromium(VI) in the preparation of chrome liquor. In the preliminary research, a practical synthesis method using chrome shavings as reducing agent was developed. To investigate the factors influencing the reaction process such as the quantity of sulfuric acid and shavings, reduction time and temperature, etc., various experiments were carried out including orthogonal tests, homogeneous tests, and single-factor tests. Data processing methods were adopted including range analysis, variance analysis, and regression analysis. Mathematical models were built to reflect the relationship of the quantity of sulfuric acid, shavings, and the reduction time to the basicity of chrome liquor and the percent reduction of sodium dichromate by shavings. |
| En ligne : |
https://drive.google.com/file/d/1d5emrsJhJJCNzl_zzapzaCT2LRhc1Xjy/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4061 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. C, N° 6 (06/2005) . - p. 217-224
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