Comprehensive approach to improving life-cycle CO2 reduction efficiency of microalgal biorefineries: A review

Hong Il Choi, Sung Won Hwang, Sang Jun Sim

Research output: Contribution to journalReview article

Abstract

Along with the increase in global awareness of rising CO2 levels, microalgae have attracted considerable interest as a promising CO2 reduction platforms since they exhibit outstanding biomass productivity and are capable of producing numerous valuable products. At this moment, however, two major barriers, relatively low photosynthetic CO2 fixation efficiency and necessity of carbon-intensive microalgal process, obstruct them to be practically utilized. This review suggests effective approaches to improve life-cycle CO2 reduction of microalgal biorefinery. In order to enhance photosynthetic CO2 fixation, strategies to augment carbon content and to increase biomass productivity should be considered. For reducing CO2 emissions associated with the process operations, introduction of efficient process elements, designing of energy-saving process routes, reuse of waste resources and utilization of process integration can be noteworthy options. These comprehensive strategies will provide guidance for microalgal biorefineries to become a practical CO2 reduction technology in near future.

Original languageEnglish
Article number121879
JournalBioresource Technology
Volume291
DOIs
Publication statusPublished - 2019 Nov 1

Fingerprint

Life cycle
life cycle
fixation
Biomass
Carbon
Productivity
productivity
carbon
biomass
Energy conservation
resource
energy saving
product

Keywords

  • Biorefinery
  • Life-cycle CO reduction
  • Microalgae
  • Negative emissions

ASJC Scopus subject areas

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

Cite this

Comprehensive approach to improving life-cycle CO2 reduction efficiency of microalgal biorefineries : A review. / Choi, Hong Il; Hwang, Sung Won; Sim, Sang Jun.

In: Bioresource Technology, Vol. 291, 121879, 01.11.2019.

Research output: Contribution to journalReview article

@article{f604593a92a34d24b33e2582d594648e,
title = "Comprehensive approach to improving life-cycle CO2 reduction efficiency of microalgal biorefineries: A review",
abstract = "Along with the increase in global awareness of rising CO2 levels, microalgae have attracted considerable interest as a promising CO2 reduction platforms since they exhibit outstanding biomass productivity and are capable of producing numerous valuable products. At this moment, however, two major barriers, relatively low photosynthetic CO2 fixation efficiency and necessity of carbon-intensive microalgal process, obstruct them to be practically utilized. This review suggests effective approaches to improve life-cycle CO2 reduction of microalgal biorefinery. In order to enhance photosynthetic CO2 fixation, strategies to augment carbon content and to increase biomass productivity should be considered. For reducing CO2 emissions associated with the process operations, introduction of efficient process elements, designing of energy-saving process routes, reuse of waste resources and utilization of process integration can be noteworthy options. These comprehensive strategies will provide guidance for microalgal biorefineries to become a practical CO2 reduction technology in near future.",
keywords = "Biorefinery, Life-cycle CO reduction, Microalgae, Negative emissions",
author = "Choi, {Hong Il} and Hwang, {Sung Won} and Sim, {Sang Jun}",
year = "2019",
month = "11",
day = "1",
doi = "10.1016/j.biortech.2019.121879",
language = "English",
volume = "291",
journal = "Bioresource Technology",
issn = "0960-8524",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Comprehensive approach to improving life-cycle CO2 reduction efficiency of microalgal biorefineries

T2 - A review

AU - Choi, Hong Il

AU - Hwang, Sung Won

AU - Sim, Sang Jun

PY - 2019/11/1

Y1 - 2019/11/1

N2 - Along with the increase in global awareness of rising CO2 levels, microalgae have attracted considerable interest as a promising CO2 reduction platforms since they exhibit outstanding biomass productivity and are capable of producing numerous valuable products. At this moment, however, two major barriers, relatively low photosynthetic CO2 fixation efficiency and necessity of carbon-intensive microalgal process, obstruct them to be practically utilized. This review suggests effective approaches to improve life-cycle CO2 reduction of microalgal biorefinery. In order to enhance photosynthetic CO2 fixation, strategies to augment carbon content and to increase biomass productivity should be considered. For reducing CO2 emissions associated with the process operations, introduction of efficient process elements, designing of energy-saving process routes, reuse of waste resources and utilization of process integration can be noteworthy options. These comprehensive strategies will provide guidance for microalgal biorefineries to become a practical CO2 reduction technology in near future.

AB - Along with the increase in global awareness of rising CO2 levels, microalgae have attracted considerable interest as a promising CO2 reduction platforms since they exhibit outstanding biomass productivity and are capable of producing numerous valuable products. At this moment, however, two major barriers, relatively low photosynthetic CO2 fixation efficiency and necessity of carbon-intensive microalgal process, obstruct them to be practically utilized. This review suggests effective approaches to improve life-cycle CO2 reduction of microalgal biorefinery. In order to enhance photosynthetic CO2 fixation, strategies to augment carbon content and to increase biomass productivity should be considered. For reducing CO2 emissions associated with the process operations, introduction of efficient process elements, designing of energy-saving process routes, reuse of waste resources and utilization of process integration can be noteworthy options. These comprehensive strategies will provide guidance for microalgal biorefineries to become a practical CO2 reduction technology in near future.

KW - Biorefinery

KW - Life-cycle CO reduction

KW - Microalgae

KW - Negative emissions

UR - http://www.scopus.com/inward/record.url?scp=85069929270&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85069929270&partnerID=8YFLogxK

U2 - 10.1016/j.biortech.2019.121879

DO - 10.1016/j.biortech.2019.121879

M3 - Review article

C2 - 31377048

AN - SCOPUS:85069929270

VL - 291

JO - Bioresource Technology

JF - Bioresource Technology

SN - 0960-8524

M1 - 121879

ER -