Sedimentation rate-based screening of oleaginous microalgae for utilization as a direct combustion fuel

Young Joon Sung; Anil Kumar Patel; Byung Sun Yu; Hong Il Choi; Jongrae Kim; Eon Seon Jin; Sang Jun Sim

doi:10.1016/j.biortech.2019.122045

Sedimentation rate-based screening of oleaginous microalgae for utilization as a direct combustion fuel

Young Joon Sung, Anil Kumar Patel, Byung Sun Yu, Hong Il Choi, Jongrae Kim, Eon Seon Jin, Sang Jun Sim

Department of Chemical and Biological Engineering

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

25 Citations (Scopus)

Abstract

The co-combustion of microalgae biomass with coal has the potential to significantly reduce CO₂ emissions by eliminating expensive and carbon-emitting downstream processes. In this study, the utilization of microalgal biomass as a direct combustion fuel in co-firing industries and the screening of potential oleaginous strains of high calorific value was investigated. High-lipid accumulating mutants were selected from mutant mixtures based on cell density using differential sedimentation rates. Of the mutant strains obtained in the top phase of the separation medium, 72% showed a higher lipid content than the wild-type strain. One mutant strain exhibited a 57.3% enhanced lipid content and a 9.3% lower heating value (LHV), both indicators of direct combustion fuel performance, compared to the wild-type strain. Our findings indicate that sedimentation rate-based strain selection allows for the easy and rapid screening of high-lipid content algal strains for the use of microalgae as direct combustion fuels.

Original language	English
Article number	122045
Journal	Bioresource technology
Volume	293
DOIs	https://doi.org/10.1016/j.biortech.2019.122045
Publication status	Published - 2019 Dec

Bibliographical note

Funding Information:
This work was supported by the Korea CCS R&D Center (Korea CCS 2020 Project) of the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT of Korea [grant number 2014M1A8A1049278 ]; the NRF [grant number NRF-2019R1A2C3009821/2010-002795 ]; and the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korean government (Ministry of Trade, Industry and Energy) [grant number 20172010202050 ].

Publisher Copyright:
© 2019 Elsevier Ltd

Keywords

Direct combustion fuel
High-lipid content strain
Microalgae
Sedimentation rate

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.2019.122045

Cite this

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title = "Sedimentation rate-based screening of oleaginous microalgae for utilization as a direct combustion fuel",

abstract = "The co-combustion of microalgae biomass with coal has the potential to significantly reduce CO2 emissions by eliminating expensive and carbon-emitting downstream processes. In this study, the utilization of microalgal biomass as a direct combustion fuel in co-firing industries and the screening of potential oleaginous strains of high calorific value was investigated. High-lipid accumulating mutants were selected from mutant mixtures based on cell density using differential sedimentation rates. Of the mutant strains obtained in the top phase of the separation medium, 72% showed a higher lipid content than the wild-type strain. One mutant strain exhibited a 57.3% enhanced lipid content and a 9.3% lower heating value (LHV), both indicators of direct combustion fuel performance, compared to the wild-type strain. Our findings indicate that sedimentation rate-based strain selection allows for the easy and rapid screening of high-lipid content algal strains for the use of microalgae as direct combustion fuels.",

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note = "Funding Information: This work was supported by the Korea CCS R&D Center (Korea CCS 2020 Project) of the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT of Korea [grant number 2014M1A8A1049278 ]; the NRF [grant number NRF-2019R1A2C3009821/2010-002795 ]; and the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korean government (Ministry of Trade, Industry and Energy) [grant number 20172010202050 ]. Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

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AU - Jin, Eon Seon

AU - Sim, Sang Jun

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PY - 2019/12

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N2 - The co-combustion of microalgae biomass with coal has the potential to significantly reduce CO2 emissions by eliminating expensive and carbon-emitting downstream processes. In this study, the utilization of microalgal biomass as a direct combustion fuel in co-firing industries and the screening of potential oleaginous strains of high calorific value was investigated. High-lipid accumulating mutants were selected from mutant mixtures based on cell density using differential sedimentation rates. Of the mutant strains obtained in the top phase of the separation medium, 72% showed a higher lipid content than the wild-type strain. One mutant strain exhibited a 57.3% enhanced lipid content and a 9.3% lower heating value (LHV), both indicators of direct combustion fuel performance, compared to the wild-type strain. Our findings indicate that sedimentation rate-based strain selection allows for the easy and rapid screening of high-lipid content algal strains for the use of microalgae as direct combustion fuels.

AB - The co-combustion of microalgae biomass with coal has the potential to significantly reduce CO2 emissions by eliminating expensive and carbon-emitting downstream processes. In this study, the utilization of microalgal biomass as a direct combustion fuel in co-firing industries and the screening of potential oleaginous strains of high calorific value was investigated. High-lipid accumulating mutants were selected from mutant mixtures based on cell density using differential sedimentation rates. Of the mutant strains obtained in the top phase of the separation medium, 72% showed a higher lipid content than the wild-type strain. One mutant strain exhibited a 57.3% enhanced lipid content and a 9.3% lower heating value (LHV), both indicators of direct combustion fuel performance, compared to the wild-type strain. Our findings indicate that sedimentation rate-based strain selection allows for the easy and rapid screening of high-lipid content algal strains for the use of microalgae as direct combustion fuels.

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Sedimentation rate-based screening of oleaginous microalgae for utilization as a direct combustion fuel

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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