Nondestructive and rapid determination of lignocellulose components of biofuel pellet using online hyperspectral imaging system
文献类型： 外文期刊
作者： Feng, Xuping 1 ; Yu, Chenliang 2 ; Liu, Xiaodan 1 ; Chen, Yunfeng 1 ; Zhen, Hong 1 ; Sheng, Kuichuan 1 ; He, Yong 1 ;
作者机构： 1.Zhejiang Univ, Coll Biosyst Engn & Food Sci, Hangzhou 310058, Zhejiang, Peoples R China
2.Zhejiang Acad Agr Sci, Vegetable Res Inst, Hangzhou 310021, Zhejiang, Peoples R China
关键词： Hyperspectral imaging; Image processing analysis; Biofuel pellet; Lignocellulose components; Wavelength selection; Biomass
期刊名称：BIOTECHNOLOGY FOR BIOFUELS （ 影响因子：6.04； 五年影响因子：6.485 ）
ISSN： 1754-6834
年卷期： 2018 年 11 卷
页码：
收录情况： SCI
摘要： Background: In the pursuit of sources of energy, biofuel pellet is emerging as a promising resource because of its easy storage and transport, and lower pollution to the environment. The composition of biomass has important implication for energy conversion processing strategies. Current standard chemical methods for biomass composition are laborious, time-consuming, and unsuitable for high-throughput analysis. Therefore, a reliable and efficient method is needed for determining lignocellulose composition in biomass and so to accelerate biomass utilization. Here, near-infrared hyperspectral imaging (900-1700 nm) together with chemometrics was used to determine the lignocellulose components in different types of biofuel pellets. Partial least-squares regression and principal component multiple linear regression models based on whole wavelengths and optimal wavelengths were employed and compared for predicting lignocellulose composition.& para;& para;Results: Out of 216 wavelengths, 20, 10 and 17 were selected by the successive projections algorithm for cellulose, hemicellulose and lignin, respectively. Three simple and satisfactory prediction models were constructed, with coefficients of determination of 0.92, 0.84 and 0.71 for cellulose, hemicellulose and lignin, respectively. The relative parameter distributions were quantitatively visualized through prediction maps by transferring the optimal models to all pixels on the hyperspectral image.& para;& para;Conclusions: Hence, the overall results indicated that hyperspectral imaging combined with chemometrics offers a non-destructive and low-cost method for determining biomass lignocellulose components, which would help in developing a simple multispectral imaging instrument for biofuel pellets online measurement and improving the production management.
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