Methane yield from Chlorella vulgaris: Assessing its potential for anaerobic digestion in biogas production

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F24%3A10255935" target="_blank" >RIV/61989100:27710/24:10255935 - isvavai.cz</a>

Result on the web

<a href="https://www.greendeal-conference.eu/programme-on-site" target="_blank" >https://www.greendeal-conference.eu/programme-on-site</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Methane yield from Chlorella vulgaris: Assessing its potential for anaerobic digestion in biogas production

Original language description

This study investigates the potential of Chlorella vulgaris for biogas production through anaerobic digestion, with a focus on optimizing the process to achieve higher methane yields. Algal biomass is a promising feedstock for renewable energy due to its rapid growth rate and high lipid content. Chlorella vulgaris was cultivated under controlled conditions using the BG 11 medium, maintaining temperatures between 24-26 oC and pH levels from 6.5 to 7.5. The algae were then subjected to a biochemical methane potential (BMP) test under anaerobic conditions at 40 oC for 40 days. Two different organic loading rates (OLRs) were tested: 3.48 kgVS m-3 and 7.19 kgVS m-3.The results revealed that methane production was significantly higher at the lower OLR of 3.27 kgVS m-3, reaching 0.4918 m3/kgVS, while biogas production was recorded at 0.7604 m3/kgVS. Additionally, the average methane content in the biogas was greater at the lower OLR, averaging 64.7 vol. %. In contrast, the methane content was lower at the higher OLR (61.2 vol. %) and in the inoculum without substrate (60.7 vol. %). These findings indicate that Chlorella vulgaris is easily and rapidly biodegradable, making it a suitable and efficient substrate for biogas production, especially at lower OLRs.The study also suggests the possibility of integrating algae cultivation with biogas processing, using treated digestate as a nutrient source for algae growth. This approach could enhance the sustainability and efficiency of biogas production by creating a circular system. Overall, Chlorella vulgaris shows great potential as an addition to feedstock for biogas plants, offering a viable alternative to conventional biomass sources.Contribution (poster) at the 5th International Conference Strategies toward Green Deal Implementation - Water, Raw Materials &amp; Energy in Green Transition

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

20704 - Energy and fuels

Project

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Continuities

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Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů