Kinetic analysis of microalgae cultivation utilizing 3D-printed real-time monitoring system reveals potential of biological CO2 conversion

Jeong Seop Lee; Young Joon Sung; Sang Jun Sim

doi:10.1016/j.biortech.2022.128014

Kinetic analysis of microalgae cultivation utilizing 3D-printed real-time monitoring system reveals potential of biological CO₂ conversion

Jeong Seop Lee
, Young Joon Sung
, Sang Jun Sim^*

^*Corresponding author for this work

Department of Chemical and Biological Engineering

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

10 Citations (Scopus)

Abstract

The microalgae-based bioconversion process is a promising carbon utilization technology because it can upgrade CO₂ into valuable substances, but a multiplex monitoring system required for process control to maximize biomass productivity has not been well established. Herein, a 3D printed real-time optical density monitoring device (RTOMD) combined platform was presented. This platform enables precise kinetics analysis by maintaining high accuracy (over 95 %) under raucous outdoor conditions. Through RTOMD-based high-frequency measurements, it was observed that maximum biomass productivity of 4.497 g L⁻¹ d⁻¹ was reached, which greatly exceeds the requirements for a feasible microalgae process. We discovered that the CO₂ fixation efficiency could be achieved to 70.75 %, indicating the potential of a bioconversion process to realize a carbon–neutral society. Consequently, the RTOMD system can contribute to promoting microalgae cultivation as an attractive carbon mitigation technology based on an improved understanding of the photosynthetic CO₂ fixation kinetics.

Original language	English
Article number	128014
Journal	Bioresource technology
Volume	364
DOIs	https://doi.org/10.1016/j.biortech.2022.128014
Publication status	Published - 2022 Nov

Bibliographical note

Publisher Copyright:
© 2022 Elsevier Ltd

Keywords

3D printing
CO bioconversion
Flue gas
Microalgae
Process real-time monitoring

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)

Access to Document

10.1016/j.biortech.2022.128014

Cite this

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title = "Kinetic analysis of microalgae cultivation utilizing 3D-printed real-time monitoring system reveals potential of biological CO2 conversion",

abstract = "The microalgae-based bioconversion process is a promising carbon utilization technology because it can upgrade CO2 into valuable substances, but a multiplex monitoring system required for process control to maximize biomass productivity has not been well established. Herein, a 3D printed real-time optical density monitoring device (RTOMD) combined platform was presented. This platform enables precise kinetics analysis by maintaining high accuracy (over 95 \%) under raucous outdoor conditions. Through RTOMD-based high-frequency measurements, it was observed that maximum biomass productivity of 4.497 g L−1 d−1 was reached, which greatly exceeds the requirements for a feasible microalgae process. We discovered that the CO2 fixation efficiency could be achieved to 70.75 \%, indicating the potential of a bioconversion process to realize a carbon–neutral society. Consequently, the RTOMD system can contribute to promoting microalgae cultivation as an attractive carbon mitigation technology based on an improved understanding of the photosynthetic CO2 fixation kinetics.",

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Y1 - 2022/11

N2 - The microalgae-based bioconversion process is a promising carbon utilization technology because it can upgrade CO2 into valuable substances, but a multiplex monitoring system required for process control to maximize biomass productivity has not been well established. Herein, a 3D printed real-time optical density monitoring device (RTOMD) combined platform was presented. This platform enables precise kinetics analysis by maintaining high accuracy (over 95 %) under raucous outdoor conditions. Through RTOMD-based high-frequency measurements, it was observed that maximum biomass productivity of 4.497 g L−1 d−1 was reached, which greatly exceeds the requirements for a feasible microalgae process. We discovered that the CO2 fixation efficiency could be achieved to 70.75 %, indicating the potential of a bioconversion process to realize a carbon–neutral society. Consequently, the RTOMD system can contribute to promoting microalgae cultivation as an attractive carbon mitigation technology based on an improved understanding of the photosynthetic CO2 fixation kinetics.

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