Thermogravimetric Analysis of biosolids pyrolysis in the presence of mineral oxides

Patel, S, Kundu, S, Halder, P, Rickards, L, Paz-Ferreiro, J, Surapanenin, A, Madapusi, S and Shah, K 2019, 'Thermogravimetric Analysis of biosolids pyrolysis in the presence of mineral oxides', Renewable Energy, vol. 141, pp. 707-716.


Document type: Journal Article
Collection: Journal Articles

Title Thermogravimetric Analysis of biosolids pyrolysis in the presence of mineral oxides
Author(s) Patel, S
Kundu, S
Halder, P
Rickards, L
Paz-Ferreiro, J
Surapanenin, A
Madapusi, S
Shah, K
Year 2019
Journal name Renewable Energy
Volume number 141
Start page 707
End page 716
Total pages 10
Publisher Pergamon Press
Abstract Biosolids, the treated and stabilised sewage sludge, was pyrolysed in the presence of naturally occurring minerals in a Thermogravimetric Analyser (TGA). The results were then compared with a synthetic catalyst (i.e., 5% Co/Al2O3). Higher mass loss was observed in TGA in the presence of both minerals and the metal oxide based catalyst when compared to biosolids' alone pyrolysis. The scanning electron microscope (SEM) images confirmed significant morphological changes in the produced biochars while Fourier Transform Infrared (FTIR) spectra corroborated noticeable chemical changes in their structure. The kinetic analyses conducted using a hybrid approach consisting of model-fitting and model-free methods, suggested that there was a reduction in activation energy in the presence of minerals and the catalyst. Overall, it is concluded that minerals despite their low catalytic activity, offer various process and morphological advantages.
Subject Chemical Engineering not elsewhere classified
Chemical Engineering Design
Environmental Technologies
Keyword(s) Biosolids
Renewable resource
Pyrolysis
Natural mineral
Metal oxide based catalyst
DOI - identifier 10.1016/j.renene.2019.04.047
Copyright notice © 2019 Elsevier
ISSN 0960-1481
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