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Reducing of Energy Consumption by Improving the Reclaiming Technology in Autoclave of a Rubber Wastes

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  • Dan Dobrotă

    (Faculty of Engineering, Lucian Blaga University of Sibiu, 550024 Sibiu, Romania)

  • Gabriela Dobrotă

    (Faculty of Economics Science, Constantin Brâncuşi University of Târgu-Jiu, 210141 Targu Jiu, Romania)

Abstract

The devulcanization of the rubber wastes in autoclave represent a technological variant that allows the superior utilization of rubber wastes, but with high energy consumption. The researches aimed at improving the devulcanization technology in order to obtain reclaimed rubber with superior characteristics, but also with a reduction in energy consumption. An improvement to devulcanization technology consisted in vacuuming the autoclave at the end of the devulcanization process. An increase in the degree of devulcanization of the rubber from 86.83% to 93.81% and an improvement of the physico-mechanical characteristics of the reclaimed rubber was achieved by applying this technology. The realization of the new type of regenerated rubber allowed for an increase in the degree of it use for different mixtures, from 15–20 phr to 30–40 phr without substantially affecting the physical and mechanical properties of the products. Additionally, the researche has shown that, by obtaining the new type of reclaimed rubber, the duration of the refining process has been reduced by 30%. All of this leads to a considerable reduction in energy consumption and transformation of the rubber waste reclaiming process into a sustainable one.

Suggested Citation

  • Dan Dobrotă & Gabriela Dobrotă, 2019. "Reducing of Energy Consumption by Improving the Reclaiming Technology in Autoclave of a Rubber Wastes," Energies, MDPI, vol. 12(8), pages 1-18, April.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:8:p:1460-:d:223720
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    References listed on IDEAS

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    1. Veronica Winoto & Nuttawan Yoswathana, 2019. "Optimization of Biodiesel Production Using Nanomagnetic CaO-Based Catalysts with Subcritical Methanol Transesterification of Rubber Seed Oil," Energies, MDPI, vol. 12(2), pages 1-13, January.
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    4. Luzana Brasileiro & Fernando Moreno-Navarro & Raúl Tauste-Martínez & Jose Matos & Maria del Carmen Rubio-Gámez, 2019. "Reclaimed Polymers as Asphalt Binder Modifiers for More Sustainable Roads: A Review," Sustainability, MDPI, vol. 11(3), pages 1-20, January.
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    Cited by:

    1. Irina Glushankova & Aleksandr Ketov & Marina Krasnovskikh & Larisa Rudakova & Iakov Vaisman, 2019. "End of Life Tires as a Possible Source of Toxic Substances Emission in the Process of Combustion," Resources, MDPI, vol. 8(2), pages 1-10, June.
    2. Dan Dobrotă & Ionela Rotaru & Florin Adrian Nicolescu & Mădălina Marin, 2019. "Improving the Sustainability of the Manufacturing Process by Constructively Optimizing the Parts “Transition Type Fitting”," Sustainability, MDPI, vol. 11(19), pages 1-18, October.
    3. Sofia Russo & Alicia Valero & Antonio Valero & Marta Iglesias-Émbil, 2021. "Exergy-Based Assessment of Polymers Production and Recycling: An Application to the Automotive Sector," Energies, MDPI, vol. 14(2), pages 1-19, January.

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