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Co-digestion of cultivated microalgae and sewage sludge from municipal waste water treatment
Mälardalen University, School of Sustainable Development of Society and Technology. (Energy Technology)ORCID iD: 0000-0002-0861-6438
Mälardalen University, School of Sustainable Development of Society and Technology. (Energy Technology)
Mälardalen University, School of Sustainable Development of Society and Technology. (Energy technology)ORCID iD: 0000-0003-3311-9465
Mälardalen University, School of Sustainable Development of Society and Technology. (Energy technology)ORCID iD: 0000-0002-3485-5440
(English)Manuscript (preprint) (Other academic)
Abstract [en]

One way to meet the increased demand for biogas in the society is to use microalgae as substrate. These algae would be cultivated in a treatment step of photobioreactors for reject water from sludge dewatering facilities. In the present study, a co-digestion experiment was established where sludge from a municipal wastewater treatment plant was fermented with harvested microalgae cultivated in lake water from lake Mälaren. The experiment was carried out as a BMP-test (Biochemical Methane Potential) under mesophilic condition (37°C) with fermentation bottles, where 0, 12, 25 and 37%, of the sludge was replaced with harvested microalgae. The results showed that the biogas production was improved with 12% for the bottles with 12% microalgae compared with the bottles with only sludge as a substrate. In the bottles with 25% and 37% microalgaes the gas production was slightly reduced compared with the bottles where only sludge was used.

Keyword [en]
biogas production; co-digestion; microalgae cultivation; sludge
National Category
Water Treatment
Research subject
Energy- and Environmental Engineering
Identifiers
URN: urn:nbn:se:mdh:diva-17496OAI: oai:DiVA.org:mdh-17496DiVA: diva2:580358
Available from: 2012-12-21 Created: 2012-12-21 Last updated: 2013-12-19Bibliographically approved

Open Access in DiVA

Co-digestion of cultivated microalgae and sewage sludge from municipal waste water treatment(312 kB)514 downloads
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File name FULLTEXT02.pdfFile size 312 kBChecksum SHA-512
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Type fulltextMimetype application/pdf

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Olsson, JesperMa, ShabiimamNehrenheim, EmmaThorin, Eva
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School of Sustainable Development of Society and Technology
Water Treatment

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf