| Titre : |
Study on a new gypsum retarder from finished leather waste |
| Type de document : |
texte imprimé |
| Auteurs : |
Minggao Deng, Auteur ; Xiaoliang Ding, Auteur ; Zhihua Shan, Auteur |
| Année de publication : |
2022 |
| Article en page(s) : |
p. 106-111 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Caractérisation
Cuir -- Déchets
Cuirs et peaux -- Détérioration
Déchets industriels -- Elimination
Gypse
Hydratation
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
The disposal of finished leather waste (FLW) has always been a concern of the tanning industry. In this paper, the finished leather degradation solution (LDS) was obtained from the alkali-heat degradation of FLW at an 84.4% extraction rate. The solid Collagen Degradation Product (CDP) of LDS contains 47.1mg/kg of chromium. When the LDS was used for gypsum retardation, with the dosage of LDS increased, the setting time of gypsum was gradually prolonged. XRD, TG and FTIR analysis indicated that the hydration reaction of gypsum hemihydrate was inhibited after adding LDS. SEM observation showed that the crystal morphology of gypsum dihydrate changed from needle-like to columnar when the 1 mL 25% LDS was introduced. This study not only indicated that LDS obtained from FLW can be a new material for gypsum retardation but also provided a new way to deal with finished leather waste. |
| Note de contenu : |
- EXPERIMENTAL PROCEDURES : Experimental materials - Preparation of LDS - Characteristisation of LDS - Characterisation of gypsum hydration process - Characterisation of hydrated gypsum
- RESULTS AND DISCUSSION : Basic features of LDS - Analysis of hydratin process - Analysis of hydrated gypsum
- Table : Basic features of LDS |
| En ligne : |
https://drive.google.com/file/d/1fGzFnXVeBRes_MBdainllxzuWM_0T3CU/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37753 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 106, N° 3 (05-06/2022) . - p. 106-111
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