[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.7464/ksct.2012.18.1.031

Comparative Study of NIR-based Prediction Methods for Biomass Weight Loss Profiles

Cho, Hyun-Woo (Department of Industrial and Management Engineering, Daegu University)
Liu, J. Jay (Department of Chemical Engineering, Pukyong National University)

Publication Information

Clean Technology / v.18, no.1, 2012 , pp. 31-37 More about this Journal

Abstract

Biomass has become a major feedstock for bioenergy and other bio-based products because of its renewability and environmental benefits. Various researches have been done in the prediction of crucial characteristics of biomass, including the active utilization of spectroscopy data. Near infrared (NIR) spectroscopy has been widely used because of its attractive features: it's non-destructive and cost-effective producing fast and reliable analysis results. This work developed the multivariate statistical scheme for predicting weight loss profiles based on the utilization of NIR spectra data measured for six lignocellulosic biomass types. Wavelet analysis was used as a compression tool to suppress irrelevant noise and to select features or wavelengths that better explain NIR data. The developed scheme was demonstrated using real NIR data sets, in which different prediction models were evaluated in terms of prediction performance. In addition, the benefits of using right pretreatment of NIR spectra were also given. In our case, it turned out that compression of high-dimensional NIR spectra by wavelet and then PLS modeling yielded more reliable prediction results without handling full set of noisy data. This work showed that the developed scheme can be easily applied for rapid analysis of biomass.

Keywords

Biofuel; Biomass; Near Infrared (NIR); Wavelet analysis; Partial least squares;

Citations & Related Records

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