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Co-digestion of microalgae, grown on municipal wastewater, and primary sewage sludge–: Pilot study in thermophilic and mesophilic conditions
Mälardalen University, School of Business, Society and Engineering, Future Energy Center. (FE)ORCID iD: 0000-0002-0861-6438
Mälardalen University, School of Business, Society and Engineering, Future Energy Center. (FE)ORCID iD: 0000-0002-5014-3275
Mälardalen University, School of Business, Society and Engineering, Future Energy Center. (FE)ORCID iD: 0000-0003-3311-9465
Mälardalen University, School of Business, Society and Engineering, Future Energy Center. (FE)ORCID iD: 0000-0002-3485-5440
2017 (English)Conference paper, Poster (with or without abstract) (Refereed)
Abstract [en]

The most common biological treatment in a municipal waste water today is the activated sludge process (ASP). A possible substitution of the ASP could be the utilization of microalgae for the reduction and/or transformation of nutrients. The produced algal biomass can be converted to biofuel by anaerobic digestion. In the present study, co-digestion of primary sludge and microalgae are studied in semi-continuous tests at mesophilic and thermophilic conditions. Two reactors fed by waste activated sludge and primary sludge are used as reference. The results show that thermophilic digestion of microalgae and primary sludge is less attractive since the methane yield is approximately the same as the mesophilic digestion. In mesophilic conditions the results are approximately the same in the two pilot reactors and also comparable with the mesophilic full-scale digesters in Västerås, Sweden.

Place, publisher, year, edition, pages
2017.
Keyword [en]
Anaerobic digestion, waste activated sludge, biogas, continuous, microalgae based activated sludge process
National Category
Other Engineering and Technologies not elsewhere specified
Identifiers
URN: urn:nbn:se:mdh:diva-37587OAI: oai:DiVA.org:mdh-37587DiVA: diva2:1169459
Conference
The 15th World Conference on Anaerobic Digestion, Beijing, China, October 17-20, 2017
Funder
Knowledge Foundation
Available from: 2017-12-27 Created: 2017-12-27 Last updated: 2017-12-28Bibliographically approved

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Olsson, JesperSchwede, SebastianNehrenheim, EmmaThorin, Eva

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CiteExportLink to record
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Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
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Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
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  • Other locale
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Output format
  • html
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  • asciidoc
  • rtf