Opportunities and challenges for flow-through hydrothermal pretreatment in advanced biorefineries

Xianzhi Meng; Chang Geun Yoo; Yunqiao Pu; Arthur J. Ragauskas

doi:10.1016/j.biortech.2021.126061

Opportunities and challenges for flow-through hydrothermal pretreatment in advanced biorefineries

Xianzhi Meng
, Chang Geun Yoo
, Yunqiao Pu
, Arthur J. Ragauskas

Research output: Contribution to journal › Review article › peer-review

22 Scopus citations

Abstract

Hydrothermal pretreatment (HTP) using only water offers great potential to reduce the overall cost of the bioconversion process. However, traditional HTP performed in a batch has limitations in removing lignin and often needs to be performed under severe conditions to achieve reasonable pretreatment effects. Lignin left in the pretreated residue at these conditions is also highly condensed, thus possessing an even more adverse impact on the hydrolysis process, which requires high enzyme loadings. To address these technical challenges, HTP performed in a flow-through configuration was developed to simultaneously achieve near-complete hemicellulose recovery, high lignin removal and high sugar release. Despite facing challenges such as potentially large water usage, flow-through HTP still represents one of the most cost-effective and eco-friendly pretreatment methods. This review mainly covers the latest cutting-edge innovations of flow-through HTP along with structural and compositional changes of cellulose, hemicellulose, and lignin before and after pretreatment.

Original language	English
Article number	126061
Journal	Bioresource Technology
Volume	343
DOIs	https://doi.org/10.1016/j.biortech.2021.126061
State	Published - Jan 2022

Funding

This manuscript has been authored by UT-Battelle , LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. This study was supported and performed as part of the Center for Bioenergy Innovation (CBI). The CBI is U.S Department of Energy Bioenergy Research Centers supported by the Office of Biological and Environmental Research in the DOE Office of Science. The views and opinions of the authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights.

Keywords

Biomass pretreatment
Flow-through hydrothermal pretreatment
Lignin valorization

Access to Document

10.1016/j.biortech.2021.126061

Cite this

@article{8c287dc29ac84cb9a328537389fd1248,

title = "Opportunities and challenges for flow-through hydrothermal pretreatment in advanced biorefineries",

abstract = "Hydrothermal pretreatment (HTP) using only water offers great potential to reduce the overall cost of the bioconversion process. However, traditional HTP performed in a batch has limitations in removing lignin and often needs to be performed under severe conditions to achieve reasonable pretreatment effects. Lignin left in the pretreated residue at these conditions is also highly condensed, thus possessing an even more adverse impact on the hydrolysis process, which requires high enzyme loadings. To address these technical challenges, HTP performed in a flow-through configuration was developed to simultaneously achieve near-complete hemicellulose recovery, high lignin removal and high sugar release. Despite facing challenges such as potentially large water usage, flow-through HTP still represents one of the most cost-effective and eco-friendly pretreatment methods. This review mainly covers the latest cutting-edge innovations of flow-through HTP along with structural and compositional changes of cellulose, hemicellulose, and lignin before and after pretreatment.",

keywords = "Biomass pretreatment, Flow-through hydrothermal pretreatment, Lignin valorization",

author = "Xianzhi Meng and Yoo, \{Chang Geun\} and Yunqiao Pu and Ragauskas, \{Arthur J.\}",

note = "Publisher Copyright: {\textcopyright} 2021",

year = "2022",

month = jan,

doi = "10.1016/j.biortech.2021.126061",

language = "English",

volume = "343",

journal = "Bioresource Technology",

issn = "0960-8524",

publisher = "Elsevier",

}

TY - JOUR

T1 - Opportunities and challenges for flow-through hydrothermal pretreatment in advanced biorefineries

AU - Meng, Xianzhi

AU - Yoo, Chang Geun

AU - Pu, Yunqiao

AU - Ragauskas, Arthur J.

PY - 2022/1

Y1 - 2022/1

N2 - Hydrothermal pretreatment (HTP) using only water offers great potential to reduce the overall cost of the bioconversion process. However, traditional HTP performed in a batch has limitations in removing lignin and often needs to be performed under severe conditions to achieve reasonable pretreatment effects. Lignin left in the pretreated residue at these conditions is also highly condensed, thus possessing an even more adverse impact on the hydrolysis process, which requires high enzyme loadings. To address these technical challenges, HTP performed in a flow-through configuration was developed to simultaneously achieve near-complete hemicellulose recovery, high lignin removal and high sugar release. Despite facing challenges such as potentially large water usage, flow-through HTP still represents one of the most cost-effective and eco-friendly pretreatment methods. This review mainly covers the latest cutting-edge innovations of flow-through HTP along with structural and compositional changes of cellulose, hemicellulose, and lignin before and after pretreatment.

AB - Hydrothermal pretreatment (HTP) using only water offers great potential to reduce the overall cost of the bioconversion process. However, traditional HTP performed in a batch has limitations in removing lignin and often needs to be performed under severe conditions to achieve reasonable pretreatment effects. Lignin left in the pretreated residue at these conditions is also highly condensed, thus possessing an even more adverse impact on the hydrolysis process, which requires high enzyme loadings. To address these technical challenges, HTP performed in a flow-through configuration was developed to simultaneously achieve near-complete hemicellulose recovery, high lignin removal and high sugar release. Despite facing challenges such as potentially large water usage, flow-through HTP still represents one of the most cost-effective and eco-friendly pretreatment methods. This review mainly covers the latest cutting-edge innovations of flow-through HTP along with structural and compositional changes of cellulose, hemicellulose, and lignin before and after pretreatment.

KW - Biomass pretreatment

KW - Flow-through hydrothermal pretreatment

KW - Lignin valorization

UR - https://www.scopus.com/pages/publications/85116613956

U2 - 10.1016/j.biortech.2021.126061

DO - 10.1016/j.biortech.2021.126061

M3 - Review article

C2 - 34597806

AN - SCOPUS:85116613956

SN - 0960-8524

VL - 343

JO - Bioresource Technology

JF - Bioresource Technology

M1 - 126061

ER -

Opportunities and challenges for flow-through hydrothermal pretreatment in advanced biorefineries

Abstract

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this