Microwave Technology Using Low Energy Concentrated Beam for Processing of Solid Waste Materials from Rapana thomasiana Seashells

Sorin Vasile Savu, Daniela Tarnita, Gabriel Constantin Benga, Ilie Dumitru, Iulian Stefan, Nicolae Craciunoiu, Adrian Bebe Olei and Ionel Danut Savu
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Sorin Vasile Savu: Department of Engineering and Management of Technological Systems, University of Craiova, 1 Calugareni Str., 220037 Drobeta-Turnu Severin, Romania
Daniela Tarnita: Department of Applied Mechanics, University of Craiova, 107 Calea Bucuresti Str., 200512 Craiova, Romania
Gabriel Constantin Benga: Department of Engineering and Management of Technological Systems, University of Craiova, 1 Calugareni Str., 220037 Drobeta-Turnu Severin, Romania
Ilie Dumitru: Department of Automotive, Transport and Industrial Engineering, University of Craiova, 200585 Craiova, Romania
Iulian Stefan: Department of Engineering and Management of Technological Systems, University of Craiova, 1 Calugareni Str., 220037 Drobeta-Turnu Severin, Romania
Nicolae Craciunoiu: Department of Automotive, Transport and Industrial Engineering, University of Craiova, 200585 Craiova, Romania
Adrian Bebe Olei: Department of Engineering and Management of Technological Systems, University of Craiova, 1 Calugareni Str., 220037 Drobeta-Turnu Severin, Romania
Ionel Danut Savu: Department of Engineering and Management of Technological Systems, University of Craiova, 1 Calugareni Str., 220037 Drobeta-Turnu Severin, Romania

Energies, 2021, vol. 14, issue 20, 1-25

Abstract: The solid waste of Rapana thomasiana seashells both from domestic activities and natural waste on seashore can be used to obtain viable products for medical applications. However, conventional technologies applied for sintering the materials require massive energy consumption due to the resistance heating. Microwave heating represents an advanced technology for sintering, but the stability of the process, in terms of thermal runaway and microwave plasma arc discharge, jeopardizes the quality of the sintered products. This paper aims to present the results of research focused on viable heating technology and the mechanical properties of the final products. A comparative analysis, in terms of energy efficiency vs. mechanical properties, has been performed for three different heating technologies: direct microwave heating, hybrid microwave heating and resistance heating. The results obtained concluded that the hybrid microwave heating led to final products from Rapana thomasiana solid waste with similar mechanical properties compared with resistance heating. In terms of energy efficiency, the hybrid microwave heating was 20 times better than resistance heating.

Keywords: Rapana thomasiana solid waste; microwave heating; energy efficiency (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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