Cited by 112Algal biology and biofuel productionAnaerobic Digestion and Biogas ProductionCarbon Dioxide Capture Technologies

Integration of anaerobic digestion and microalgal cultivation for digestate bioremediation and biogas upgrading

Nagarajan, Dillirani, Lee, Duu-Jong, Chang, Jo-Shu·2019·Bioresource Technology

Abstract

Biogas is the gaseous byproduct obtained during anaerobic digestion which is rich in methane, along with a significant amount of other gases like CO 2. The removal of CO 2 is essential to upgrade the biogas to biomethane (>95% methane content). High CO 2 tolerant microalgae can be employed as a biological CO 2 scrubbing agent for biogas upgrading. Many microalgal strains tolerant to the levels of CO 2 and CH 4 seen in biogas have been reported. A CO 2 removal efficiency of 50-99% can be attained based on the microalgae used and the cultivation conditions applied. Nutrient-rich liquid digestate obtained from anaerobic digestion can also be used as the cultivation medium for microalgae, performing biogas upgrading and digestate bioremediation simultaneously. Mixotrophic cultivation enables microalgae to utilize the organic carbon present in the liquid digestate along with nitrogen and phosphorus. Microalgae appears to be a potential biological CO 2 scrubbing agent for efficient biogas upgrading.

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Crossref · 10.1016/j.biortech.2019.121804

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130 of 130 references verified0 citation errors · 0 not checkable

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  • The non-negligible cost of production related to microalgae CO2 consumption can be significantly reduced, not just through the CO2 generated from the bacterial partner but also by using CO2 emissions from industrial plants in the cultivation systems or through biogas upgrading.

    “The non-negligible cost of production related to microalgae CO2 consumption can be significantly reduced, not just through the CO2 generated from the bacterial partner but also by using CO2 emissions from industrial plants in the cultivation systems [138,139] or through biogas upgrading [140].”

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Authors
Nagarajan, D., Lee, D.-J., & Chang, J.-S.
Affiliations
  • National Taiwan University (TW)
  • National Taiwan University of Science and Technology (TW)
  • Tunghai University (TW)
Corresponding author
Chang, Jo-Shu
Venue
Bioresource Technology
Publisher
Elsevier BV
Published
2019-10
Volume
290
Pages
121804
ISSN
0960-8524 (ISSN-L)
OpenAlex
W2961319244
Cited by
112
References
130
Citations by year
2026: 8 · 2025: 10 · 2024: 15 · 2023: 17 · 2022: 27 · 2021: 13 · 2020: 19 · 2019: 3
FWCI
0.60
Type
journal article
Language
en
Open access
closed
Locations
  • Bioresource Technology (publishedVersion)
  • PubMed (publishedVersion)
Funders
Ministry of Science and Technology, Taiwan
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
  • Physical Sciences › Engineering › Building and Construction › Anaerobic Digestion and Biogas Production
  • Physical Sciences › Engineering › Mechanical Engineering › Carbon Dioxide Capture Technologies
Keywords
anaerobic digestion, microalgae cultivation, biogas upgrading, biomethane, carbon dioxide removal, mixotrophic cultivation, methane
MeSH terms
Anaerobiosis, Biodegradation, Environmental, Methane, Phosphorus, Biofuels, Microalgae

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