| Autor: |
BĂLĂU MÎNDRU Tudorel, POPA Emil, PRUNEANU Melinda, BĂLĂU MÎNDRU Iulia, MUREŞAN Augustin |
| Jazyk: |
angličtina |
| Rok vydání: |
2014 |
| Předmět: |
|
| Zdroj: |
Annals of the University of Oradea: Fascicle of Textiles, Leatherwork, Vol XV, Iss 1, Pp 127-132 (2014) |
| Popis: |
Leather industry is a relatively large source of waste from raw material, so skin waste recovery is a goal of clean technologies. Capitalization of skin waste aims to obtain: chemical auxiliaries, technical articles, hydrolyzed protein, artificial leather, composite building materials, heat sources and collagen biomaterials with applications in medicine, cosmetics, etc. A first step in the recovery of skin waste is the degreasing operation. Ultrasound is an effective tool to improve the efficiency of the conventional degreasing affecting the chemical substances as well as the treated skin. In addition, the processing time is reduced. Ultrasound is known to enhance the emulsification and dispersion of oils/fat. The usual degreasing methods requires more emulsifier/solvent ratio and process time for emulsification and additional solvent for washing out the emulsified fat. This paper investigates the possibility of recovery through ecological processes of leather waste from finishing operations for further capitalization. The present study aims emulsification and subsequent removal of the fat present in the chamois powder waste from polishing operation with the aid of ultrasound by an aqueous ecofriendly method. The study also took into account the ultrasonic treatment of the leather waste using trichlorethylene as a medium of propagation-degreasing, and realized a comparative analysis of efficiency of fat extraction by Soxhlet method and via ultrasonication. IR-ATR and optical microscopy highlight both morphological and chemical-structural changes of treated materials by different degreasing methods |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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