The Prediction of Higher Heating Value, Lower Heating Value and Ash Content of Rice Husk Using FT-NIR Spectroscopy

  • Natrapee Nakawajana King Mongkut’s Institute of Technology Ladkrabang
  • Jetsada Posom Khon Kaen University
  • Jaruwat Paeoui King Mongkut’s Institute of Technology Ladkrabang

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Abstract

Rice husk is the significant waste residue to be used as renewable energy. The growth of the use on rice husk for generating electricity lead to the verification of its properties. This research aimed to predict higher heating value (HHV), lower heating value (LHV), and ash content (A) of rice husk using Fourier Transform near infrared (FT-NIR) spectroscopy. Rice husk samples used in this experiment were collected from variable areas in Thailand in order to improve the model and get the robust model. The models were built using partial least squares (PLS) regression and validated by unknown sample collected from different area to calibration set. The prediction of HHV, LHV and A were represented the root mean square error of cross validation (RMSECV) of 199 J/g, 199 J/g, and 0.859%wb, respectively. The calibration model can predict the unknown sample successfully with the relative standard error of prediction (RSEP) of 1.104 %, 1.159 %, and, 5.975 %, which implied good performance of NIR model for future prediction. The results suggested that HHV, LHV, and A models should be able to assess the properties of rice husk samples and showed that NIR was reliable and suitable method for combustion system to screening material.

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Author Biographies
Natrapee Nakawajana

Department of Agricultural Engineering, Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang, 1 Chalongkrung Road, Ladkrabang, Bangkok 10520, Thailand

Jetsada Posom

Applied Engineering for Important Crops of the North East Research Group, Khon Kaen University, Khon Kaen 40002, Thailand

Department of Agricultural Engineering, Faculty of Engineering, Khon Kaen University, Khon Kaen 40002, Thailand

Jaruwat Paeoui

Department of Agricultural Engineering, Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang, 1 Chalongkrung Road, Ladkrabang, Bangkok 10520, Thailand

Published
Vol 22 No 5, Sep 30, 2018
How to Cite
N. Nakawajana, J. Posom, and J. Paeoui, “The Prediction of Higher Heating Value, Lower Heating Value and Ash Content of Rice Husk Using FT-NIR Spectroscopy”, Eng. J., vol. 22, no. 5, pp. 45-56, Sep. 2018.

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