การสร้างสมการพยากรณ์สำหรับปริมาณผลผลิตเอทานอลตามทฤษฎี : กรณีศึกษา วัชพืชบริเวณเขตอำเภอเมือง จังหวัดตาก

Boondarick Rodbumrung; Narunchara Katemee

Authors

Boondarick Rodbumrung Department of Sciences, Faculty of Science and Agricultural Technology, Rajamangala University of Technology Lanna Tak, Muang, Tak 63000, Thailand.
Narunchara Katemee Department of Mathematics, Faculty of Science and Agricultural Technology, Rajamangala University of Technology Lanna Tak, Muang, Tak 63000, Thailand.

Keywords:

weed, cellulose, ethanol, multiple regression, forecasting of the theoretical ethanol yield

Abstract

This research studied the diversity of weed species, the chemical compositions of weeds and the theoretical ethanol yields. The weed samples were collected in Muang District, Tak Province, by the quadrat sampling method. Data on the chemical compositions of weeds were used to evaluate the correlation for the equation of the theoretical ethanol yield forecast by multiple regression analysis. The result showed that Fabaceae was the family with the largest number of weeds in this area. The chemical composition analysis showed that Physalis angulata L. had the highest moisture and ash content. Phragmites karka (Retz.) Trin. ex Steud. had the highest cellulose content and theoretical ethanol yield, while Cyperus pilosus Vahl and Leucaena leucocephala (Lam.) de Wit had the highest hemicellulose and lignin content, respectively. The results of the study on the correlation between the chemical composition of weeds and the theoretical ethanol yields showed that cellulose content was the best indicator for all the chemical compositions of weeds. The equation for the theoretical ethanol yields had a coefficient of determination (R²) value of 80.7%.

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