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STATISTICAL ANALYSYS OF THE SCFE OF A BRAZILAN MINERAL COAL Ciênc. Tecnol. Aliment.
DARIVA,Cláudio; OLIVEIRA,José Vladimir; PINTO,José C.; VALE,Maria G.; CARAMÃO,Elina B..
The influence of some process variables on the productivity of the fractions (liquid yield times fraction percent) obtained from SCFE of a Brazilian mineral coal using isopropanol and ethanol as primary solvents is analyzed using statistical techniques. A full factorial 23 experimental design was adopted to investigate the effects of process variables (temperature, pressure and cosolvent concentration) on the extraction products. The extracts were analyzed by the Preparative Liquid Chromatography-8 fractions method (PLC-8), a reliable, non destructive solvent fractionation method, especially developed for coal-derived liquids. Empirical statistical modeling was carried out in order to reproduce the experimental data. Correlations obtained were always...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Statistical analysis; SCFE; Productivity; PLC-8 characterization.
Ano: 1997 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20611997000400032
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