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Utilization of slaughter plant waste proteins in gypsum retarder: A case study
- Source :
- MATEC Web of Conferences, Vol 108, p 02002 (2017)
- Publication Year :
- 2017
- Publisher :
- EDP Sciences, 2017.
-
Abstract
- Slaughter plant waste proteins contain animal hair, bones, nails etc. Improper treatment will pollute the environment and result in waste of resources. A process is proposed to prepare gypsum retarder from such waste, firstly through hydrolysis at acidic condition, and then neutralized with alkalis. The optimal conditions for acid hydrolysis are obtained: concentration of HCL 4.8 mol/L, reaction temperature 98 °C, reaction time 7 h. After neutralization (to pH=7), the product can be used as gypsum retarder (retarder A). Compared with commonly used retarder, citric acid, the mechanical strength loss of gypsum paste containing retarder A is much lower. It is a cost-effective approach for safe utilization of slaughter plant waste proteins.
- Subjects :
- Engineering (General). Civil engineering (General)
TA1-2040
Subjects
Details
- Language :
- English, French
- ISSN :
- 2261236X and 20171080
- Volume :
- 108
- Database :
- Directory of Open Access Journals
- Journal :
- MATEC Web of Conferences
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.9084ce54f2004d86840d9ee124948e12
- Document Type :
- article
- Full Text :
- https://doi.org/10.1051/matecconf/201710802002