Analysis of physical and mechanical properties and of gross calorific value of Jatropha curcas seeds and waste from pressing process
¹Technical University of Košice, Faculty of Manufacturing Technologies, Department of Technological Systems Operation, Štúrova 31, Prešov 08001, Slovak Republic;
*Correspondence: juraj.ruzbarsky@tuke.sk
²Department of Material Science and Manufacturing Technology, Faculty of Engineering, Czech University of Life Science, Kamýcká 129, 16521 Prague, Czech Republic
Abstract:
The research was performed with an aim to investigate physical and mechanical properties and a gross calorific value of Jatropha curcas seeds and particular products (waste) of a pressing process. Sizes of seeds, an energy which is necessary for pressing an oil and a setting of the gross calorific value were tested parameters. Tests were performed at Jatropha Curcas seeds of a brown colour (that means gnaw). The pressing process waste amounts up to 80%. The proportion of the kernel mass to the coat mass is 1:0.62. From the research results it follows that the coat mass is 37.60%. The seed coat belongs among interesting material owing to the gross calorific value. For pressing the whole seeds it is necessary of about 30% higher energy than for pressing the kernels of Jatropha curcas.
Key words:
coat of seed, energy, kernel, oil-cakes, pressing, seed