Solvothermal liquefaction of microalgal Tetraselmis sp. biomass to prepare biopolyols by using PEG#400-blended glycerol

Keon Hee Kim; Yoon Ju Jo; Choul Gyun Lee; Eun Yeol Lee

doi:10.1016/j.algal.2015.08.007

Solvothermal liquefaction of microalgal Tetraselmis sp. biomass to prepare biopolyols by using PEG#400-blended glycerol

Keon Hee Kim, Yoon Ju Jo, Choul Gyun Lee, Eun Yeol Lee

Kyung Hee University

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

34 Scopus citations

Abstract

The microalga Tetraselmis sp. was solvothermally liquefied to prepare biopolyols. Polyethylene glycol 400 (PEG#400)-blended glycerol was used as the liquefaction solvent in the presence of sulfuric acid as the catalyst. The effects of liquefaction parameters, such as the PEG#400/glycerol ratio, liquefaction temperature, acid loading, biomass loading, and liquefaction time on the biomass conversion of Tetraselmis sp. have been investigated and optimized. The optimal liquefaction conditions for biopolyol production were PEG#400/glycerol = 6/4, 190 °C, 5% (w/w) acid loading, 20% (w/w) biomass loading, and 60 min. At the optimal condition, biomass conversion was 88.5%, and the hydroxyl and acid numbers of biopolyols were about 650 mg KOH/g and 9 mg KOH/g polyol, respectively. Fourier transform infrared spectroscopy (FT-IR) showed that the resulting biopolyol was suitable for polyurethane synthesis.

Original language	English
Pages (from-to)	539-544
Number of pages	6
Journal	Algal Research
Volume	12
DOIs	https://doi.org/10.1016/j.algal.2015.08.007
State	Published - 1 Nov 2015

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Publisher Copyright:
© 2015 Published by Elsevier B.V.

Keywords

Biopolyol
Liquefaction
Microalgae
PEG#400-blended glycerol
Polyurethane

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10.1016/j.algal.2015.08.007

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title = "Solvothermal liquefaction of microalgal Tetraselmis sp. biomass to prepare biopolyols by using PEG#400-blended glycerol",

abstract = "The microalga Tetraselmis sp. was solvothermally liquefied to prepare biopolyols. Polyethylene glycol 400 (PEG#400)-blended glycerol was used as the liquefaction solvent in the presence of sulfuric acid as the catalyst. The effects of liquefaction parameters, such as the PEG#400/glycerol ratio, liquefaction temperature, acid loading, biomass loading, and liquefaction time on the biomass conversion of Tetraselmis sp. have been investigated and optimized. The optimal liquefaction conditions for biopolyol production were PEG#400/glycerol = 6/4, 190 °C, 5% (w/w) acid loading, 20% (w/w) biomass loading, and 60 min. At the optimal condition, biomass conversion was 88.5%, and the hydroxyl and acid numbers of biopolyols were about 650 mg KOH/g and 9 mg KOH/g polyol, respectively. Fourier transform infrared spectroscopy (FT-IR) showed that the resulting biopolyol was suitable for polyurethane synthesis.",

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author = "Kim, {Keon Hee} and Jo, {Yoon Ju} and Lee, {Choul Gyun} and Lee, {Eun Yeol}",

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doi = "10.1016/j.algal.2015.08.007",

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AU - Kim, Keon Hee

AU - Jo, Yoon Ju

AU - Lee, Choul Gyun

AU - Lee, Eun Yeol

PY - 2015/11/1

Y1 - 2015/11/1

N2 - The microalga Tetraselmis sp. was solvothermally liquefied to prepare biopolyols. Polyethylene glycol 400 (PEG#400)-blended glycerol was used as the liquefaction solvent in the presence of sulfuric acid as the catalyst. The effects of liquefaction parameters, such as the PEG#400/glycerol ratio, liquefaction temperature, acid loading, biomass loading, and liquefaction time on the biomass conversion of Tetraselmis sp. have been investigated and optimized. The optimal liquefaction conditions for biopolyol production were PEG#400/glycerol = 6/4, 190 °C, 5% (w/w) acid loading, 20% (w/w) biomass loading, and 60 min. At the optimal condition, biomass conversion was 88.5%, and the hydroxyl and acid numbers of biopolyols were about 650 mg KOH/g and 9 mg KOH/g polyol, respectively. Fourier transform infrared spectroscopy (FT-IR) showed that the resulting biopolyol was suitable for polyurethane synthesis.

AB - The microalga Tetraselmis sp. was solvothermally liquefied to prepare biopolyols. Polyethylene glycol 400 (PEG#400)-blended glycerol was used as the liquefaction solvent in the presence of sulfuric acid as the catalyst. The effects of liquefaction parameters, such as the PEG#400/glycerol ratio, liquefaction temperature, acid loading, biomass loading, and liquefaction time on the biomass conversion of Tetraselmis sp. have been investigated and optimized. The optimal liquefaction conditions for biopolyol production were PEG#400/glycerol = 6/4, 190 °C, 5% (w/w) acid loading, 20% (w/w) biomass loading, and 60 min. At the optimal condition, biomass conversion was 88.5%, and the hydroxyl and acid numbers of biopolyols were about 650 mg KOH/g and 9 mg KOH/g polyol, respectively. Fourier transform infrared spectroscopy (FT-IR) showed that the resulting biopolyol was suitable for polyurethane synthesis.

KW - Biopolyol

KW - Liquefaction

KW - Microalgae

KW - PEG#400-blended glycerol

KW - Polyurethane

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DO - 10.1016/j.algal.2015.08.007

M3 - Article

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SN - 2211-9264

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JF - Algal Research

ER -

Solvothermal liquefaction of microalgal Tetraselmis sp. biomass to prepare biopolyols by using PEG#400-blended glycerol

Abstract

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Keywords

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