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Control of Several Emissions during Olive Pomace Thermal Degradation

Department of Mechanical, Energetic and Materials Engineering, Industrial Engineering School, University of Extremadura, Avda Elvas s/n, 06071 Badajoz, Spain
Department of Applied Physics, Industrial Engineering School, University of Extremadura, Avda Elvas s/n, 06071 Badajoz, Spain
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Int. J. Mol. Sci. 2014, 15(10), 18349-18361;
Received: 10 July 2014 / Revised: 5 September 2014 / Accepted: 24 September 2014 / Published: 13 October 2014
(This article belongs to the Special Issue Green Chemistry and the Biorefinery)
PDF [2351 KB, uploaded 13 October 2014]


Biomass plays an important role as an energy source, being an interesting alternative to fossil fuels due to its environment-friendly and sustainable characteristics. However, due to the exposure of customers to emissions during biomass heating, evolved pollutants should be taken into account and controlled. Changing raw materials or mixing them with another less pollutant biomass could be a suitable step to reduce pollution. This work studied the thermal behaviour of olive pomace, pyrenean oak and their blends under combustion using thermogravimetric analysis. It was possible to monitor the emissions released during the process by coupling mass spectrometry analysis. The experiments were carried out under non-isothermal conditions at the temperature range 25–750 °C and a heating rate of 20 °C·min−1. The following species were analysed: aromatic compounds (benzene and toluene), sulphur emissions (sulphur dioxide), 1,4-dioxin, hydrochloric acid, carbon dioxide and nitrogen oxides. The results indicated that pollutants were mainly evolved in two different stages, which are related to the thermal degradation steps. Thus, depending on the pollutant and raw material composition, different emission profiles were observed. Furthermore, intensity of the emission profiles was related, in some cases, to the composition of the precursor. View Full-Text
Keywords: combustion; emissions; biomass; mass spectrometry; thermogravimetry combustion; emissions; biomass; mass spectrometry; thermogravimetry

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Miranda, T.; Nogales, S.; Román, S.; Montero, I.; Arranz, J.I.; Sepúlveda, F.J. Control of Several Emissions during Olive Pomace Thermal Degradation. Int. J. Mol. Sci. 2014, 15, 18349-18361.

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