Immobilized Oleaginous Microalgae as Effective Two-phase Purify Unit for Biogas and Anaerobic Digester Effluent Coupling with Lipid Production
Abstract
Oleaginous microalga Scenedesmus sp. was immobilized in alginate-gel beads and applied as two-phase purify unit for biogas and anaerobic digester effluent from palm oil mill. Optimal microalgal cell concentration and bead volume ratio were 10 6 cells mL-1 and 25% v/v, respectively. The use of 20% effluent and light intensity at 128 µmol·proton·m-2 s-1 most promoted CO 2 removal by immobilized microalgae and achieved the maximum CO 2 removal rate of 4.63 kg-CO 2 day-1 m-3. This process upgraded methane content in biogas (>95%) and completely remove nitrogen and phosphorus in the effluent. After process operation, 2.98 g L-1 microalgal biomass with 35.92% lipid content were recovered by simple sieving method. Microalgal lipids are composed of C16-C18 (>98%) with prospect high cetane number and short ignition delay time. This study has shown the promising biorefinery concept which is effective not only in CO 2 fixation, biogas upgrading and pollutant removal but also cost-effective production of microalgae-based biofuel.
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The processes generated microalgal biomass of above 2.98-4.40 gL-1 with a lipid content of greater than 34% and consisting of long-chain fatty acids.
“The processes were also reported to generate microalgal biomass of above 2.98 -4.40 gL -1 with a lipid content of greater than 34% and consisting of long-chain fatty acids (Srinuanpan et al., 2019, 2018).”
From Strategies to Produce Cost-Effective Third-Generation Biofuel From Microalgae (2021) · cites this paper as Srinuanpan et al., 2019
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Strategies to Produce Cost-Effective Third-Generation Biofuel From Microalgae
Rafa, N., Ahmed, S. F., Badruddin, I. A., Mofijur, M., & Kamangar, S. (2021) · Frontiers in Energy Research · doi:10.3389/fenrg.2021.749968 · Cited by 169 · see citing works
“The processes were also reported to generate microalgal biomass of above 2.98–4.40 gL-1 with a lipid content of greater than 34% and consisting of long-chain fatty acids (Srinuanpan et al., 2019, 2018).”
BackgroundInfluentialNagarajan, D., Lee, D.-J., & Chang, J.-S. (2019) · Bioresource Technology · doi:10.1016/j.biortech.2019.121804 · Cited by 112 · see citing works
- Authors
- Srinuanpan, S., Cheirsilp, B., Boonsawang, P., & Prasertsan, P.
- Affiliations
- Prince of Songkla University (TH)
- Corresponding author
- Cheirsilp, Benjamas
- Venue
- Bioresource Technology
- Publisher
- Elsevier BV
- Published
- 2019-06
- Volume
- 281
- Pages
- 149-157
- ISSN
- 0960-8524 (ISSN-L)
- OpenAlex
- W2916625297
- Cited by
- 43
- References
- 31
- Citations by year
- 2026: 2 · 2025: 1 · 2024: 2 · 2023: 6 · 2022: 11 · 2021: 11 · 2020: 7 · 2019: 3
- FWCI
- 1.70
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Bioresource Technology (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Prince of Songkla University
- Southern Palm Oil Co., Ltd
- Thailand Research Fund (RTA6080010)
- Research and Researchers for Industries (PHD 58I0030)
- Energy Conservation Promotion Fund
- 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
- oleaginous microalgae, Scenedesmus, alginate immobilization, biogas upgrading, digestate, palm oil mill effluent, carbon dioxide removal, nitrogen and phosphorus removal, microalgal lipid production, biodiesel, biorefinery, light intensity
- MeSH terms
- Anaerobiosis, Lipids, Methane, Nitrogen, Phosphorus, Biomass, Scenedesmus, Biofuels, Microalgae
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