| Full text | |
| Author(s): |
Lopes Grotto, Carlos Guilherme
[1]
;
Gomes Colares, Carla Jovania
[1]
;
Lima, Daniel Rodrigues
[1]
;
Pereira, Douglas Henrique
[1]
;
do Vale, Ailton Teixeira
[2]
Total Authors: 5
|
| Affiliation: | [1] Fed Univ Tocantins, Exact & Biotechnol Sci Collegiate, Campus Gurupi Badejos, POB 66, BR-77402970 Gurupi, TO - Brazil
[2] Univ Brasilia, Dept Forestry, Campus Darcy Ribeiro, BR-70910900 Brasilia, DF - Brazil
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | BIOMASS & BIOENERGY; v. 142, NOV 2020. |
| Web of Science Citations: | 2 |
| Abstract | |
This work aimed to characterize and evaluate the energy potential of the residual biomass of genetically improved rice varieties (Pampeira rice and Catiana rice) introduced in the Brazilian market in 2016 and an indefinite variety of rice to establish a comparison. The two varieties of rice species enabled an increase in producers' profits of up to 57% and therefore with high production of residues and without problems of supply. The thermogravimetric analysis (TGA), middle and near infrared spectroscopy were used to characterize the biomass. The TGA curves evidenced the degradation of lignocellulosic matter as hemicellulose and cellulose (120 degrees C and 350 degrees C) and lignin (350 degrees C and 600 degrees C). The middle and near infrared spectroscopy identified the main characteristic bands of the rice husks: O-H, Si-OH, -CH2, -CH3, C=O and C-O. The elementary analysis showed that the percentage of carbon 40.68% and 42.29% and the total lignin 33.21% and 31.55% for Catiana and Pampeira rice husk, respectively, have a good potential for generating useful energy. The higher heating values (HHV) 4409.50 kcal kg(-1) and 4488.00 kcal kg(-1) for Catiana and Pampeira risk husk evaluate and proven the energetic potential of these materials. On the other hand, the ash content determined is lower, which facilitates its application in the combustion process. The theoretical results showed that the lignin presents greater enthalpy of combustion, when compared with hemicellulose and cellulose, confirming the results of the experiments found in the work. (AU) | |
| FAPESP's process: | 13/08293-7 - CCES - Center for Computational Engineering and Sciences |
| Grantee: | Munir Salomao Skaf |
| Support Opportunities: | Research Grants - Research, Innovation and Dissemination Centers - RIDC |
| FAPESP's process: | 17/11485-6 - Computational and theoretical developments based on ab initio methods and the Density Functional Theory |
| Grantee: | Rogério Custodio |
| Support Opportunities: | Regular Research Grants |