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Description: Bleaching removes the natural color from biomass material that increases the whiteness and improves the performance of subsequent chemical treatments. In this research, a new digital method instead of a traditional colorimetric one was used to determine the whiteness of bleached biomass material. In this digital method, a software named Image Color Picker was used to obtain a hexadecimal alpha-numerical code (HEX value, for example, #8c4c0f). This code is then inserted into ColorHexa software which gives the Hunter Lab ?L?, ?a?, and ?b? values. The whiteness index (WI) of bleached biomass samples were then calculated using an equation: [WI= ?(a^2 )+ (b^2 )+ ('L-100)'^2 '?^(1/2). It was found that the L value increased gradually with the increasing bleaching (H2O2) concentration, time, and temperature. Further, the whiteness index (WI), which is inverse of L value, showed a decreasing trend with the treatment time, temperature and concentration. It was concluded that agricultural waste biomass materials such as cattail fibers? natural color removal efficiency by bleaching could be determined by this digital method.

Keywords: agricultural waste biomass, digital method, bleaching, whiteness index, cattail fiber
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Date: 2021-06-11
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Conference name: 5th CIGR International Conference and CSBE-SCGAB AGM 2021, Quebec City,QC, 11-14 May 2021.
Session name: World Congress on Computers in Agriculture and Natural Resources (WCCA 1)

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Publication type: Presentation
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Coverage: Canada
Language 1: en
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Rights: Canadian Society for Bioengineering
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