Geopolymers
Inorganic polymeric new materials
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Giseli Aparecida Bernabé
Giseli Aparecida Bernabé
Chemistry Institute, Analytical Chemistry Department, São Paulo State University, Prof. Francisco Degni, s/n, P.O. Box 355, Araraquara, SP, 14801-970, Brazil
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S. Almeida
S. Almeida
Chemistry Institute, Analytical Chemistry Department, São Paulo State University, Prof. Francisco Degni, s/n, P.O. Box 355, Araraquara, SP, 14801-970, Brazil
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C. A. Ribeiro
C. A. Ribeiro
Chemistry Institute, Analytical Chemistry Department, São Paulo State University, Prof. Francisco Degni, s/n, P.O. Box 355, Araraquara, SP, 14801-970, Brazil
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M. S. Crespi
M. S. Crespi
Chemistry Institute, Analytical Chemistry Department, São Paulo State University, Prof. Francisco Degni, s/n, P.O. Box 355, Araraquara, SP, 14801-970, Brazil
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Abstract
The composting process using sugarcane bagasse, animal manure, and urea as source of organic matter, microorganism, and nitrogen, respectively, were evaluated regarding the thermal behavior considering the maturation period: 0 (raw), 15, 22, 30, and 60 days. Thermogravimetric and differential thermal analysis curves were obtained in a synthetic air atmosphere and heating rate of 10 °C min−1 in the range of 30–600 °C. The raw compost showed 80% organic matter, which was reduced up to 58% to 60 days compost. Two main mass losses were verified, corresponding to characteristics exothermic peak in differential thermal analysis curves depending on the maturation period. The variation in organic composition was evaluated by Fourier transform infrared spectroscopy verifying the structures (lignin, cellulose, and hemicelluloses) changes with composting process, and the gas chromatography–mass spectrometry was used to identify substance soluble in hexane.
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| Journal of Thermal Analysis and Calorimetry | |
|---|---|
| Language | English |
| Size | A4 |
| Year of Foundation |
1969 |
| Volumes per Year |
1 |
| Issues per Year |
24 |
| Founder | Akadémiai Kiadó |
| Founder's Address |
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. |
| Publisher | Akadémiai Kiadó Springer Nature Switzerland AG |
| Publisher's Address |
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11. |
| Responsible Publisher |
Chief Executive Officer, Akadémiai Kiadó |
| ISSN | 1388-6150 (Print) |
| ISSN | 1588-2926 (Online) |
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Temperature dependence of the rate of reaction in thermal analysis
The Arrhenius equation in condensed phase kinetics
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