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Article

Chemical Free Two-Step Hydrothermal Pretreatment to Improve Sugar Yields from Energy Cane

1
Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
2
Department of Chemical Engineering, State University of New York College of Environmental Science and Forestry, Syracuse, NY 13210, USA
3
Department of Renewable and Bio-energy engineering, CCS Haryana Agricultural University, Hisar, Haryana 12500, India
4
Department of Processing & Food Engineering, CCS Haryana Agricultural University, Hisar, Haryana 125004, India
*
Author to whom correspondence should be addressed.
Energies 2020, 13(21), 5805; https://doi.org/10.3390/en13215805
Received: 8 October 2020 / Revised: 29 October 2020 / Accepted: 4 November 2020 / Published: 6 November 2020
Energy cane is an attractive lignocellulosic feedstock for processing into biofuels and bioproducts. A low-severity two-step hydrothermal pretreatment was investigated on energy cane for the production of monomeric sugar. Pretreatment temperature and time, in addition to the effect of disk milling, were observed for the glucose and xylose yields during hydrolysis. At residence times above 5 min in case of pretreatment at 200 °C, all of the hemicellulose was observed to be solubilized. The pretreatment condition of 200 °C for 10 min with disk milling was observed to provide the highest glucose concentration of 5.4%, and 200 °C for 5 min with disk milling provided the highest xylose concentration of 2.15%. The effect of disk milling in improving the sugar concentrations during hydrolysis was significant, especially at lower pretreatment temperatures and times. Low xylose yields at higher temperatures were attributed to the formation of degradation products at increased severity. View Full-Text
Keywords: energy cane; liquid hot water pretreatment; disk milling; sugar production; lignocellulosic biofuels energy cane; liquid hot water pretreatment; disk milling; sugar production; lignocellulosic biofuels
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MDPI and ACS Style

Juneja, A.; Kumar, D.; Singh, V.K.; Yadvika; Singh, V. Chemical Free Two-Step Hydrothermal Pretreatment to Improve Sugar Yields from Energy Cane. Energies 2020, 13, 5805. https://doi.org/10.3390/en13215805

AMA Style

Juneja A, Kumar D, Singh VK, Yadvika, Singh V. Chemical Free Two-Step Hydrothermal Pretreatment to Improve Sugar Yields from Energy Cane. Energies. 2020; 13(21):5805. https://doi.org/10.3390/en13215805

Chicago/Turabian Style

Juneja, Ankita, Deepak Kumar, Vijay K. Singh, Yadvika, and Vijay Singh. 2020. "Chemical Free Two-Step Hydrothermal Pretreatment to Improve Sugar Yields from Energy Cane" Energies 13, no. 21: 5805. https://doi.org/10.3390/en13215805

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