THIN LAYER CONVECTIVE DRYING OF CYSTOSEIRA BARBATA BROWN MACROALGA

被引：0

作者：

Trica, Bogdan ^{[1
]}

Parvulescu, Oana Cristina ^{[1
]}

Raducanu, Cristian Eugen ^{[1
]}

Dobre, Tanase ^{[1
]}

机构：

[1] Univ Politehn Bucuresti, Dept Chem & Biochem Engn, Bucharest, Romania

来源：

UNIVERSITY POLITEHNICA OF BUCHAREST SCIENTIFIC BULLETIN SERIES B-CHEMISTRY AND MATERIALS SCIENCE | 2020年 / 82卷 / 02期

关键词：

air drying; diffusion coefficient; kinetic model; macroalga; Cystoseira barbata; KINETICS; SEAWEED; PRETREATMENT; SUSPENSIONS; FRUITS; ALGAE;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Drying kinetics of Cystoseira barbata brown macroalga were measured and predicted. Thin layer convective drying experiments were conducted in a thermobalance at 50-80 degrees C and a dehydrator at 55 degrees C. Drying kinetics were predicted using semi-theoretical kinetic models based on Fick's second law. Values of effective diffusivity (0.761-1.876x10(-9) m(2)/s), rate constant (0.961-3.040 h(-n) for Page model, 0.997-2.581 h(-1) for Newton and Handerson and Pabis (HP) models), and activation energy (26.58-37.39 kJ/mol) were determined for drying in the thermobalance. Page, Newton, and HP models based on kinetic parameters obtained for drying in the thermobalance predicted accurately experimental drying kinetics in the dehydrator. Page model was used to simulate the operation of a conveyor belt dryer with infrared radiation heating.

引用

页码：3 / 14

页数：12

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