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The physical structure of limestones and the reactivity as sorbents of atmospheric pollutant

Grant number: 08/07215-4
Support type:Scholarships in Brazil - Master
Effective date (Start): September 01, 2009
Effective date (End): March 31, 2011
Field of knowledge:Engineering - Chemical Engineering - Chemical Technology
Principal researcher:Paula Cristina Garcia Manoel Crnkovic
Grantee:Daniela Andresa Mortari
Home Institution: Escola de Engenharia de São Carlos (EESC). Universidade de São Paulo (USP). São Carlos , SP, Brazil

Abstract

The utilization of mineral coals becomes an alternative to supply the growing energetic demand. However, the combustion of Brazilian coals has caused considerable preoccupation with the environment, mainly because of their sulphur contents, which range is from 1 to 6%. The combustion of these coals in conventional plants is problematic due to the generation and emission of SO2 to the atmosphere. An alternative to minimize this problem is the use of fluidized bed combustors that permit adding limestone to remove SO2. The aim of this project is to apply thermogravimetry to study the gas-solid process SO2-CaO, and to use the factorial design to compare the behavior of pollutant gases sorption by different limestones in optimized conditions. From the results, both the porous structure of calcined limestones and a correlation between these characteristics and the reactive capacity with SO2 will be evaluated. Studies that allow improving the conversion of regent material and consequently decreasing the environmental impact and utilization of raw material are very important mainly regarding the sustainable alternatives for the energetic sector. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
MORTARI, DANIELA A.; AVILA, IVONETE; CRNKOVIC, PAULA M. Response Surface Methodology Applied to the Evaluation of the SO2 Sorption Process in Two Brazilian Limestones. ENERGY & FUELS, v. 27, n. 6, p. 2890-2898, JUN 2013. Web of Science Citations: 2.
MORTARI, DANIELA ANDRESA; CRNKOVIC, PAULA MANOEL; ÁVILA, IVONETE; MILIOLI, FERNANDO EDUARDO. Interpretação do mecanismo de difusão no processo gás-sólido da reação de dessulfurização. Química Nova, v. 33, n. 9, p. 1887-1891, 2010.
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
. The physical structures of a dolomite and a limestone and their reactivities as \'SO IND.2\' sorbents. 2011. Master's Dissertation - Universidade de São Paulo (USP). Escola de Engenharia de São Carlos (EESC/SBD) São Carlos.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.