COMPARISON OF SAFFLOWER OIL EXTRACTION KINETICS UNDER TWO CHARACTERISTIC MOISTURE CONDITIONS: STATISTICAL ANALYSIS OF NON-LINEAR MODEL PARAMETERS

被引：7
作者：
Bauemler, E. [1 ]
Fernandez, M. B. [1 ]
Nolasco, S. M. [1 ]
Perez, E. E. [1 ]
机构：
[1] UNCPBA, Fac Ingn, Grp TECSE, RA-7400 Olavarria, Argentina
来源：
BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING | 2014年 / 31卷 / 02期
关键词：
Effective-diffusion coefficients; Extraction kinetics; Safflower; SEED OIL; OPTIMIZATION;
D O I：
10.1590/0104-6632.20140312s00002467
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
In this study the kinetics of oil extraction from partially dehulled safflower seeds under two moisture conditions (7 and 9% dry basis) was investigated. The extraction assays were performed using a stirred batch system, thermostated at 50 degrees C, using n-hexane as solvent. The data obtained were fitted to a modified diffusion model in order to represent the extraction kinetics. The model took into account a washing and a diffusive step. Fitting parameters were compared statistically for both moisture conditions. The oil yield increased with the extraction time in both cases, although the oil was released at different rates. A comparison of the parameters showed that both the portion extracted in the washing phase and the effective diffusion coefficient were moisture-dependent. The effective diffusivities were 2.81 10(-12) and 8.06 10(-13) m(2) s(-1) for moisture contents of 7% and 9%, respectively.
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页码：553 / 559
页数：7
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