Comparative material balances around pretreatment technologies for the conversion of switchgrass to soluble sugars

Rebecca J. Garlock; Venkatesh Balan; Bruce E. Dale; V. Ramesh Pallapolu; Y. Y. Lee; Youngmi Kim; Nathan S. Mosier; Michael R. Ladisch; Mark T. Holtzapple; Matthew Falls; Rocio Sierra-Ramirez; Jian Shi; Mirvat A. Ebrik; Tim Redmond; Bin Yang; Charles E. Wyman; Bryon S. Donohoe; Todd B. Vinzant; Richard T. Elander; Bonnie Hames; Steve Thomas; Ryan E. Warner

doi:10.1016/j.biortech.2011.04.002

Comparative material balances around pretreatment technologies for the conversion of switchgrass to soluble sugars

Rebecca J. Garlock
, Venkatesh Balan
, Bruce E. Dale
, V. Ramesh Pallapolu
, Y. Y. Lee
, Youngmi Kim
, Nathan S. Mosier
, Michael R. Ladisch
, Mark T. Holtzapple
, Matthew Falls
, Rocio Sierra-Ramirez
, Jian Shi
, Mirvat A. Ebrik
, Tim Redmond
, Bin Yang
, Charles E. Wyman
, Bryon S. Donohoe
, Todd B. Vinzant
, Richard T. Elander
, Bonnie Hames

Steve Thomas, Ryan E. Warner

Research output: Contribution to journal › Article › peer-review

119 Scopus citations

Abstract

For this project, six chemical pretreatments were compared for the Consortium for Applied Fundamentals and Innovation (CAFI): ammonia fiber expansion (AFEX), dilute sulfuric acid (DA), lime, liquid hot water (LHW), soaking in aqueous ammonia (SAA), and sulfur dioxide (SO ₂). For each pretreatment, a material balance was analyzed around the pretreatment, optional post-washing step, and enzymatic hydrolysis of Dacotah switchgrass. All pretreatments+enzymatic hydrolysis solubilized over two-thirds of the available glucan and xylan. Lime, post-washed LHW, and SO ₂ achieved >83% total glucose yields. Lime, post-washed AFEX, and DA achieved >83% total xylose yields. Alkaline pretreatments, except AFEX, solubilized the most lignin and a portion of the xylan as xylo-oligomers. As pretreatment pH decreased, total solubilized xylan and released monomeric xylose increased. Low temperature-long time or high temperature-short time pretreatments are necessary for high glucose release from late-harvest Dacotah switchgrass but high temperatures may cause xylose degradation.

Original language	English
Pages (from-to)	11063-11071
Number of pages	9
Journal	Bioresource Technology
Volume	102
Issue number	24
DOIs	https://doi.org/10.1016/j.biortech.2011.04.002
State	Published - Dec 2011

Bibliographical note

Funding Information:
This research was funded under the Office of the Biomass Program of the United States Department of Energy (Contract: DE-FG36-07GO17102). We would like to acknowledge the many undergraduate and graduate students, post doctoral candidates, and technicians at their respective institutions for their vital role in obtaining and compiling this information.

Funding

This research was funded under the Office of the Biomass Program of the United States Department of Energy (Contract: DE-FG36-07GO17102). We would like to acknowledge the many undergraduate and graduate students, post doctoral candidates, and technicians at their respective institutions for their vital role in obtaining and compiling this information.

Funders	Funder number
U.S. Department of Energy	DE-FG36-07GO17102

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Cellulosic ethanol
Enzymatic hydrolysis
Material balance
Pretreatment
Switchgrass

ASJC Scopus subject areas

Environmental Engineering
Bioengineering
Renewable Energy, Sustainability and the Environment
Waste Management and Disposal

Access to Document

10.1016/j.biortech.2011.04.002

Cite this

Garlock, R. J., Balan, V., Dale, B. E., Ramesh Pallapolu, V., Lee, Y. Y., Kim, Y., Mosier, N. S., Ladisch, M. R., Holtzapple, M. T., Falls, M., Sierra-Ramirez, R., Shi, J., Ebrik, M. A., Redmond, T., Yang, B., Wyman, C. E., Donohoe, B. S., Vinzant, T. B., Elander, R. T., ... Warner, R. E. (2011). Comparative material balances around pretreatment technologies for the conversion of switchgrass to soluble sugars. Bioresource Technology, 102(24), 11063-11071. https://doi.org/10.1016/j.biortech.2011.04.002

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title = "Comparative material balances around pretreatment technologies for the conversion of switchgrass to soluble sugars",

abstract = "For this project, six chemical pretreatments were compared for the Consortium for Applied Fundamentals and Innovation (CAFI): ammonia fiber expansion (AFEX), dilute sulfuric acid (DA), lime, liquid hot water (LHW), soaking in aqueous ammonia (SAA), and sulfur dioxide (SO 2). For each pretreatment, a material balance was analyzed around the pretreatment, optional post-washing step, and enzymatic hydrolysis of Dacotah switchgrass. All pretreatments+enzymatic hydrolysis solubilized over two-thirds of the available glucan and xylan. Lime, post-washed LHW, and SO 2 achieved >83\% total glucose yields. Lime, post-washed AFEX, and DA achieved >83\% total xylose yields. Alkaline pretreatments, except AFEX, solubilized the most lignin and a portion of the xylan as xylo-oligomers. As pretreatment pH decreased, total solubilized xylan and released monomeric xylose increased. Low temperature-long time or high temperature-short time pretreatments are necessary for high glucose release from late-harvest Dacotah switchgrass but high temperatures may cause xylose degradation.",

keywords = "Cellulosic ethanol, Enzymatic hydrolysis, Material balance, Pretreatment, Switchgrass",

author = "Garlock, \{Rebecca J.\} and Venkatesh Balan and Dale, \{Bruce E.\} and \{Ramesh Pallapolu\}, V. and Lee, \{Y. Y.\} and Youngmi Kim and Mosier, \{Nathan S.\} and Ladisch, \{Michael R.\} and Holtzapple, \{Mark T.\} and Matthew Falls and Rocio Sierra-Ramirez and Jian Shi and Ebrik, \{Mirvat A.\} and Tim Redmond and Bin Yang and Wyman, \{Charles E.\} and Donohoe, \{Bryon S.\} and Vinzant, \{Todd B.\} and Elander, \{Richard T.\} and Bonnie Hames and Steve Thomas and Warner, \{Ryan E.\}",

note = "Funding Information: This research was funded under the Office of the Biomass Program of the United States Department of Energy (Contract: DE-FG36-07GO17102). We would like to acknowledge the many undergraduate and graduate students, post doctoral candidates, and technicians at their respective institutions for their vital role in obtaining and compiling this information. ",

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Garlock, RJ, Balan, V, Dale, BE, Ramesh Pallapolu, V, Lee, YY, Kim, Y, Mosier, NS, Ladisch, MR, Holtzapple, MT, Falls, M, Sierra-Ramirez, R, Shi, J, Ebrik, MA, Redmond, T, Yang, B, Wyman, CE, Donohoe, BS, Vinzant, TB, Elander, RT, Hames, B, Thomas, S & Warner, RE 2011, 'Comparative material balances around pretreatment technologies for the conversion of switchgrass to soluble sugars', Bioresource Technology, vol. 102, no. 24, pp. 11063-11071. https://doi.org/10.1016/j.biortech.2011.04.002

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T1 - Comparative material balances around pretreatment technologies for the conversion of switchgrass to soluble sugars

AU - Garlock, Rebecca J.

AU - Balan, Venkatesh

AU - Dale, Bruce E.

AU - Ramesh Pallapolu, V.

AU - Lee, Y. Y.

AU - Kim, Youngmi

AU - Mosier, Nathan S.

AU - Ladisch, Michael R.

AU - Holtzapple, Mark T.

AU - Falls, Matthew

AU - Sierra-Ramirez, Rocio

AU - Shi, Jian

AU - Ebrik, Mirvat A.

AU - Redmond, Tim

AU - Yang, Bin

AU - Wyman, Charles E.

AU - Donohoe, Bryon S.

AU - Vinzant, Todd B.

AU - Elander, Richard T.

AU - Hames, Bonnie

AU - Thomas, Steve

AU - Warner, Ryan E.

N1 - Funding Information: This research was funded under the Office of the Biomass Program of the United States Department of Energy (Contract: DE-FG36-07GO17102). We would like to acknowledge the many undergraduate and graduate students, post doctoral candidates, and technicians at their respective institutions for their vital role in obtaining and compiling this information.

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N2 - For this project, six chemical pretreatments were compared for the Consortium for Applied Fundamentals and Innovation (CAFI): ammonia fiber expansion (AFEX), dilute sulfuric acid (DA), lime, liquid hot water (LHW), soaking in aqueous ammonia (SAA), and sulfur dioxide (SO 2). For each pretreatment, a material balance was analyzed around the pretreatment, optional post-washing step, and enzymatic hydrolysis of Dacotah switchgrass. All pretreatments+enzymatic hydrolysis solubilized over two-thirds of the available glucan and xylan. Lime, post-washed LHW, and SO 2 achieved >83% total glucose yields. Lime, post-washed AFEX, and DA achieved >83% total xylose yields. Alkaline pretreatments, except AFEX, solubilized the most lignin and a portion of the xylan as xylo-oligomers. As pretreatment pH decreased, total solubilized xylan and released monomeric xylose increased. Low temperature-long time or high temperature-short time pretreatments are necessary for high glucose release from late-harvest Dacotah switchgrass but high temperatures may cause xylose degradation.

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KW - Cellulosic ethanol

KW - Enzymatic hydrolysis

KW - Material balance

KW - Pretreatment

KW - Switchgrass

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Comparative material balances around pretreatment technologies for the conversion of switchgrass to soluble sugars

Abstract

Bibliographical note

Funding

UN SDGs

Keywords

ASJC Scopus subject areas

Access to Document

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