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Detailed Analysis of Sewage Sludge Pyrolysis Gas: Effect of Pyrolysis Temperature

1
Faculty of Environmental Technology, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague, Czech Republic
2
Institute of Chemical Process Fundamentals of the Czech Academy of Sciences, v. v. i., Rozvojová 135, 16502 Prague, Czech Republic
3
Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Gent, Belgium
4
Institute of Plasma Physics of the Czech Academy of Sciences, v. v. i., Za Slovankou 1782/3, 182 00 Prague, Czech Republic
*
Author to whom correspondence should be addressed.
Energies 2020, 13(16), 4087; https://doi.org/10.3390/en13164087
Received: 30 June 2020 / Revised: 28 July 2020 / Accepted: 4 August 2020 / Published: 6 August 2020
(This article belongs to the Section Energy and Environment)
Conventional methods of sewage sludge disposal are often limited by their environmental impact and economic demands. Pyrolysis has been studied as a viable method for sewage sludge disposal and transformation into usable products. Pyrolytic products may have various uses, and their complex characteristics shall be described to assess their potential for safe utilization. Here, we studied slow pyrolysis of stabilized sewage sludge in a fixed bed reactor at 400–800 °C to describe the composition of the pyrolysis gas and the condensate fraction. We found that condensate elemental composition was practically independent of pyrolysis temperature. On the other hand, the composition of the pyrolysis gas was strongly temperature-dependent regarding both the share of major components (H2, CO, CO2, CH4) and C2–C6 hydrocarbons speciation (which as a sum attributed to 7–9 vol. % of the gas). The increase in pyrolysis temperature also resulted in increasing the N2 content of the gas, whereas the sulfur containing gas compounds were substantially diluted in the increasing gas volume. View Full-Text
Keywords: sewage sludge; pyrolysis; gas composition; mass balance; energy balance sewage sludge; pyrolysis; gas composition; mass balance; energy balance
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MDPI and ACS Style

Moško, J.; Pohořelý, M.; Skoblia, S.; Beňo, Z.; Jeremiáš, M. Detailed Analysis of Sewage Sludge Pyrolysis Gas: Effect of Pyrolysis Temperature. Energies 2020, 13, 4087.

AMA Style

Moško J, Pohořelý M, Skoblia S, Beňo Z, Jeremiáš M. Detailed Analysis of Sewage Sludge Pyrolysis Gas: Effect of Pyrolysis Temperature. Energies. 2020; 13(16):4087.

Chicago/Turabian Style

Moško, Jaroslav; Pohořelý, Michael; Skoblia, Siarhei; Beňo, Zdeněk; Jeremiáš, Michal. 2020. "Detailed Analysis of Sewage Sludge Pyrolysis Gas: Effect of Pyrolysis Temperature" Energies 13, no. 16: 4087.

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