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Title: Impact of different catalysis supported by oyster shells on the pyrolysis of tyre wastes in a single and a double fixed bed reactor

Abstract

Highlights: • An innovative way in the disposal of tyre wastes with energy recovery by pyrolysis is proposed. • Performance of catalysts is improved by spreading them over layers of oyster shells. • One or two levels of supported catalytic beds may favor the quantity and/or the calorific value of the pyrolysis by-products. - Abstract: The treatment and disposal of tyres from vehicles has long been of considerable environmental importance. Studies have been undertaken to reduce their environmental impact. In this study, an alternative gas was produced from automobile tyre wastes by the means of a controlled pyrolysis. To do so, a novel catalytic system was designed with the aim of increasing the rate of conversion and improving the quality of the pyrolysis products. This work aimed also to reduce the severity of the overall reactions, by using powder catalysts (MgO, Al{sub 2}O{sub 3}, CaCO{sub 3}, and zeolite ZSM-5) uniformly distributed on two layers of oyster shells (OS) particles. The catalyst/tyres mass ratio was kept for all the tests at 1/30. The pyrolysis reactor was maintained at 500 °C and the influence of each catalyst and of the number of shell beds (0, 1 or 2), on the yield andmore » composition of the derived products, was examined. The gas yields could contribute by 1.2% of total consumption in Tunisia. Furthermore, some combinations could upgrade the derived gas and made it possible to use it as such or with the minimum of post-treatment. It was found that, with the use of supported catalyst, the gas produced is 45% greater compared to classical thermal pyrolysis. The Heating value of the produced gas was also improved by the use of supported catalysts; it was found 16% greater with the use of Al{sub 2}O{sub 3}/OS compared to non-catalytic pyrolysis. When compared to the gas obtained from only one catalytic supported bed, the sulfur content was reduced by 80% with the use of CaCO{sub 3}/OS on two catalytic beds.« less

Authors:
 [1];  [2];  [3];  [4];  [5];  [6];  [4];  [7]
  1. Ecole Nationale d'Ingénieurs de Monastir, Avenue Ibn EL Jazzar, 5019 Monastir (Tunisia)
  2. (France)
  3. (Tunisia)
  4. Unité de Recherche en Science et Technologies de l’Environnement, Institut Supérieur des Sciences et Technologies de l'Environnement de Borj Cédria, Hammam Lif (Tunisia)
  5. National Institute of R&D for Biological Science, 296 Spl. Independentei, 060031 Bucharest (Romania)
  6. (CAMPUS), University Politehnica of Bucharest, 313 Spl. Independentei, 060042 Bucharest (Romania)
  7. Ecole des Mines de Nantes, GEPEA UMR 6144, CNRS, 4 Rue Alfred Kastler, 44307 Nantes (France)
Publication Date:
OSTI Identifier:
22742123
Resource Type:
Journal Article
Journal Name:
Waste Management
Additional Journal Information:
Journal Volume: 67; Other Information: Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0956-053X
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; CALORIFIC VALUE; CATALYSTS; ENERGY RECOVERY; ENVIRONMENTAL IMPACTS; GAS YIELDS; MASS SPECTROSCOPY; OYSTERS; PACKED BEDS; PYROLYSIS PRODUCTS; WASTE PROCESSING; WASTES

Citation Formats

Kordoghli, Sana, Ecole des Mines de Nantes, GEPEA UMR 6144, CNRS, 4 Rue Alfred Kastler, 44307 Nantes, Unité de Recherche en Science et Technologies de l’Environnement, Institut Supérieur des Sciences et Technologies de l'Environnement de Borj Cédria, Hammam Lif, Khiari, Besma, Paraschiv, Maria, Research Center for Advanced Materials, Products and Processes, Zagrouba, Fethi, and Tazerout, Mohand. Impact of different catalysis supported by oyster shells on the pyrolysis of tyre wastes in a single and a double fixed bed reactor. United States: N. p., 2017. Web. doi:10.1016/J.WASMAN.2017.06.001.
Kordoghli, Sana, Ecole des Mines de Nantes, GEPEA UMR 6144, CNRS, 4 Rue Alfred Kastler, 44307 Nantes, Unité de Recherche en Science et Technologies de l’Environnement, Institut Supérieur des Sciences et Technologies de l'Environnement de Borj Cédria, Hammam Lif, Khiari, Besma, Paraschiv, Maria, Research Center for Advanced Materials, Products and Processes, Zagrouba, Fethi, & Tazerout, Mohand. Impact of different catalysis supported by oyster shells on the pyrolysis of tyre wastes in a single and a double fixed bed reactor. United States. doi:10.1016/J.WASMAN.2017.06.001.
Kordoghli, Sana, Ecole des Mines de Nantes, GEPEA UMR 6144, CNRS, 4 Rue Alfred Kastler, 44307 Nantes, Unité de Recherche en Science et Technologies de l’Environnement, Institut Supérieur des Sciences et Technologies de l'Environnement de Borj Cédria, Hammam Lif, Khiari, Besma, Paraschiv, Maria, Research Center for Advanced Materials, Products and Processes, Zagrouba, Fethi, and Tazerout, Mohand. Fri . "Impact of different catalysis supported by oyster shells on the pyrolysis of tyre wastes in a single and a double fixed bed reactor". United States. doi:10.1016/J.WASMAN.2017.06.001.
@article{osti_22742123,
title = {Impact of different catalysis supported by oyster shells on the pyrolysis of tyre wastes in a single and a double fixed bed reactor},
author = {Kordoghli, Sana and Ecole des Mines de Nantes, GEPEA UMR 6144, CNRS, 4 Rue Alfred Kastler, 44307 Nantes and Unité de Recherche en Science et Technologies de l’Environnement, Institut Supérieur des Sciences et Technologies de l'Environnement de Borj Cédria, Hammam Lif and Khiari, Besma and Paraschiv, Maria and Research Center for Advanced Materials, Products and Processes and Zagrouba, Fethi and Tazerout, Mohand},
abstractNote = {Highlights: • An innovative way in the disposal of tyre wastes with energy recovery by pyrolysis is proposed. • Performance of catalysts is improved by spreading them over layers of oyster shells. • One or two levels of supported catalytic beds may favor the quantity and/or the calorific value of the pyrolysis by-products. - Abstract: The treatment and disposal of tyres from vehicles has long been of considerable environmental importance. Studies have been undertaken to reduce their environmental impact. In this study, an alternative gas was produced from automobile tyre wastes by the means of a controlled pyrolysis. To do so, a novel catalytic system was designed with the aim of increasing the rate of conversion and improving the quality of the pyrolysis products. This work aimed also to reduce the severity of the overall reactions, by using powder catalysts (MgO, Al{sub 2}O{sub 3}, CaCO{sub 3}, and zeolite ZSM-5) uniformly distributed on two layers of oyster shells (OS) particles. The catalyst/tyres mass ratio was kept for all the tests at 1/30. The pyrolysis reactor was maintained at 500 °C and the influence of each catalyst and of the number of shell beds (0, 1 or 2), on the yield and composition of the derived products, was examined. The gas yields could contribute by 1.2% of total consumption in Tunisia. Furthermore, some combinations could upgrade the derived gas and made it possible to use it as such or with the minimum of post-treatment. It was found that, with the use of supported catalyst, the gas produced is 45% greater compared to classical thermal pyrolysis. The Heating value of the produced gas was also improved by the use of supported catalysts; it was found 16% greater with the use of Al{sub 2}O{sub 3}/OS compared to non-catalytic pyrolysis. When compared to the gas obtained from only one catalytic supported bed, the sulfur content was reduced by 80% with the use of CaCO{sub 3}/OS on two catalytic beds.},
doi = {10.1016/J.WASMAN.2017.06.001},
journal = {Waste Management},
issn = {0956-053X},
number = ,
volume = 67,
place = {United States},
year = {2017},
month = {9}
}