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Modeling of Convective Drying of Sawdust Using a Reaction Engineering Approach
Author(s) -
Mohd Yusof Hanna Amirah,
Ng Jes Lynn,
Ng Sze Chiat,
Lee Yan Jie,
Hii Ching Lik,
Putranto Aditya
Publication year - 2020
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.202000013
Subject(s) - sawdust , mass transfer , kinetics , chemical reaction engineering , activation energy , convection , water content , thermodynamics , process (computing) , moisture , chemistry , materials science , process engineering , chromatography , physics , composite material , engineering , geotechnical engineering , computer science , organic chemistry , quantum mechanics , operating system , catalysis , biochemistry
Drying as a simultaneous heat and mass transfer process can be modeled via the reaction engineering approach (REA) where the apparent activation energy of the material is established and related to its moisture content during drying. This relationship is unique as the normalized activation energies can be collapsed into a single equation irrespective of the drying conditions and dryer types. Here, REA was applied to model the drying kinetics of sawdust using convective hot air in a laboratory setup. The normalized (relative) activation energy curve generated from one drying experiment was employed to predict the drying kinetics and temperature profiles. The REA can describe well the convective drying kinetics of sawdust, and major physics of the drying process was captured well with this technique.