Original Articles A Model of Drying Kinetics of Acacia mangium Wood at Different Temperatures

DOI:

10.1080/07373937.2013.829855

Wan Noor Aidawati Wan Nadhari^a, Rokiah Hashim^a*, Mohammed Danish^a, Othman Sulaiman^a & Salim Hiziroglu^b

pages 361-370

Publishing models and article dates explained

• Published online: 24 Jan 2014

Drying Technology: An International Journal

Volume 32, Issue 3, 2014

• 
  

Abstract 

The objective of this study was to determine the isothermal drying kinetics of Acacia mangium wood blocks by employing a relative humidity-controlled drying chamber. A model was developed based on solution of Fick's second law and evaluated through the coefficient of determination (R ² ), sum of square error (SSE), root mean square error (RMSE), and reduced chi-square (χ ² ). This model was compared to semi-theoretical models which are commonly used to describe the drying behavior of biomass in previous studies. The porosity and shrinkage characteristics of dried specimens were also evaluated. Based on the findings in this work, it was determined that the proposed model resulted in an excellent fit with experimental data for all four drying temperature levels of 30, 35, 40, and 45 ^∘ C to describe the isothermal drying kinetics of Acacia mangium . It appears that volumetric shrinkage of the samples decreased quadratically with decreasing moisture ratio. The activation energy of the drying process was determined to be 41.07 kJ/mol.

Author affiliations

• ^a Division of Bioresource, Paper and Coatings Technology, School of Industrial Technology , Universiti Sains Malaysia , Penang ,  Malaysia
• ^b Department of Natural Resource Ecology and Management , Oklahoma State University , Stillwater , Oklahoma ,  USA

For further details log on website :

http://www.tandfonline.com/doi/full/10.1080/07373937.2013.829855#abstract