Staged organosolv pretreatment to increase net energy and reactive lignin yield in whole oil palm tree biorefinery

Md Khairul Islam; Amornpan Thaemngoen; Chun Yin Lau; Jianyu Guan; Chi Shun Yeung; Sumate Chaiprapat; Shao Yuan Leu

doi:10.1016/j.biortech.2021.124766

Staged organosolv pretreatment to increase net energy and reactive lignin yield in whole oil palm tree biorefinery

Md Khairul Islam, Amornpan Thaemngoen, Chun Yin Lau, Jianyu Guan, Chi Shun Yeung, Sumate Chaiprapat, Shao Yuan Leu

Research output: Journal article publication › Journal article › Academic research › peer-review

21 Citations (Scopus)

Abstract

Pretreatment is the most crucial and energy-intensive unit process affecting the feasibility of biorefinery, especially when lignin valorization is of concern. This study investigated and quantified the potential benefits of an innovative staged organosolv (OS)-dilute acid (DA) pretreatment process for whole oil palm tree residues conversion. The staged OS-DA pretreatment resulted in approximately five times higher net energy (1.50 GJ/tonne) over the single-step OSDA process (0.30GJ/tonne) due to potential energy saving on solvent recovery and less water consumption. For sugar, OS-DA pretreated substrate achieved more than 90% of cellulose digestibility which was more than 40% higher than DA-OS substrate. For mono-lignin, significant reduction in crude lignin condensation (21.7%) was confirmed by two-dimensional NMR analysis. The overall mass balance showed that approximately 142.45 tonnes of bioethanol, or a net energy yield of 969.5 GJ, can be produced by OS-DA process from palm tree residues per hectare of oil palm farm.

Original language	English
Article number	124766
Journal	Bioresource Technology
Volume	326
DOIs	https://doi.org/10.1016/j.biortech.2021.124766
Publication status	Published - Apr 2021

Keywords

Biofuel
Energy footprint
Lignin condensation
Organosolv pretreatment
Palm biomass

ASJC Scopus subject areas

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

UN SDGs

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

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10.1016/j.biortech.2021.124766

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title = "Staged organosolv pretreatment to increase net energy and reactive lignin yield in whole oil palm tree biorefinery",

abstract = "Pretreatment is the most crucial and energy-intensive unit process affecting the feasibility of biorefinery, especially when lignin valorization is of concern. This study investigated and quantified the potential benefits of an innovative staged organosolv (OS)-dilute acid (DA) pretreatment process for whole oil palm tree residues conversion. The staged OS-DA pretreatment resulted in approximately five times higher net energy (1.50 GJ/tonne) over the single-step OSDA process (0.30GJ/tonne) due to potential energy saving on solvent recovery and less water consumption. For sugar, OS-DA pretreated substrate achieved more than 90% of cellulose digestibility which was more than 40% higher than DA-OS substrate. For mono-lignin, significant reduction in crude lignin condensation (21.7%) was confirmed by two-dimensional NMR analysis. The overall mass balance showed that approximately 142.45 tonnes of bioethanol, or a net energy yield of 969.5 GJ, can be produced by OS-DA process from palm tree residues per hectare of oil palm farm.",

keywords = "Biofuel, Energy footprint, Lignin condensation, Organosolv pretreatment, Palm biomass",

author = "Islam, {Md Khairul} and Amornpan Thaemngoen and Lau, {Chun Yin} and Jianyu Guan and Yeung, {Chi Shun} and Sumate Chaiprapat and Leu, {Shao Yuan}",

note = "Funding Information: The authors thank for the financial support from the Hong Kong Research Grant Council, General Research Fund (GRF 15212319); Innovation and Technology Commission (ITS 188/15FP & GHP/042/18GD); and Research and Researchers for Industries Program, the Thailand Research Fund (Grant No. PHD57I0032) in supporting Amornpan Thaemngoen's research exchange to the Hong Kong Polytechnic University. The authors also thank Mr. W.S. Lam in the Water and Waste Analysis Laboratory and Dr. Kenneth Yan in the University Research Facility in Chemical and Environmental Analysis (UCEA) for sample analysis. Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd Copyright: Copyright 2021 Elsevier B.V., All rights reserved.",

year = "2021",

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doi = "10.1016/j.biortech.2021.124766",

language = "English",

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journal = "Bioresource Technology",

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AU - Islam, Md Khairul

AU - Thaemngoen, Amornpan

AU - Lau, Chun Yin

AU - Guan, Jianyu

AU - Yeung, Chi Shun

AU - Chaiprapat, Sumate

AU - Leu, Shao Yuan

N1 - Funding Information: The authors thank for the financial support from the Hong Kong Research Grant Council, General Research Fund (GRF 15212319); Innovation and Technology Commission (ITS 188/15FP & GHP/042/18GD); and Research and Researchers for Industries Program, the Thailand Research Fund (Grant No. PHD57I0032) in supporting Amornpan Thaemngoen's research exchange to the Hong Kong Polytechnic University. The authors also thank Mr. W.S. Lam in the Water and Waste Analysis Laboratory and Dr. Kenneth Yan in the University Research Facility in Chemical and Environmental Analysis (UCEA) for sample analysis. Publisher Copyright: © 2021 Elsevier Ltd Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2021/4

Y1 - 2021/4

N2 - Pretreatment is the most crucial and energy-intensive unit process affecting the feasibility of biorefinery, especially when lignin valorization is of concern. This study investigated and quantified the potential benefits of an innovative staged organosolv (OS)-dilute acid (DA) pretreatment process for whole oil palm tree residues conversion. The staged OS-DA pretreatment resulted in approximately five times higher net energy (1.50 GJ/tonne) over the single-step OSDA process (0.30GJ/tonne) due to potential energy saving on solvent recovery and less water consumption. For sugar, OS-DA pretreated substrate achieved more than 90% of cellulose digestibility which was more than 40% higher than DA-OS substrate. For mono-lignin, significant reduction in crude lignin condensation (21.7%) was confirmed by two-dimensional NMR analysis. The overall mass balance showed that approximately 142.45 tonnes of bioethanol, or a net energy yield of 969.5 GJ, can be produced by OS-DA process from palm tree residues per hectare of oil palm farm.

AB - Pretreatment is the most crucial and energy-intensive unit process affecting the feasibility of biorefinery, especially when lignin valorization is of concern. This study investigated and quantified the potential benefits of an innovative staged organosolv (OS)-dilute acid (DA) pretreatment process for whole oil palm tree residues conversion. The staged OS-DA pretreatment resulted in approximately five times higher net energy (1.50 GJ/tonne) over the single-step OSDA process (0.30GJ/tonne) due to potential energy saving on solvent recovery and less water consumption. For sugar, OS-DA pretreated substrate achieved more than 90% of cellulose digestibility which was more than 40% higher than DA-OS substrate. For mono-lignin, significant reduction in crude lignin condensation (21.7%) was confirmed by two-dimensional NMR analysis. The overall mass balance showed that approximately 142.45 tonnes of bioethanol, or a net energy yield of 969.5 GJ, can be produced by OS-DA process from palm tree residues per hectare of oil palm farm.

KW - Biofuel

KW - Energy footprint

KW - Lignin condensation

KW - Organosolv pretreatment

KW - Palm biomass

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SN - 0960-8524

VL - 326

JO - Bioresource Technology

JF - Bioresource Technology

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Staged organosolv pretreatment to increase net energy and reactive lignin yield in whole oil palm tree biorefinery

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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