Change search
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
Will different pretreatment methods influence the biogas production of seaweeds
Halmstad University, School of Business, Engineering and Science.
2018 (English)Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

Global warming along with energy demand and rising prices of natural energy resources have motivated studies to find some renewable and clean energy. The use of algae as third generation biofuel can avoid the competition for farmland and algae can be considered as a potential future source of renewable energy. Algae can be used for biogas production through anaerobic digestion (AD). Fucus vesiculosus and Fucus serratus are the two dominating species of brown seaweed growing in the Baltic sea in the southwest of Sweden. Pretreatment can significantly affect the biogas production since hydrolysis of algae cell wall structure is a rate-limiting step in AD process. In this study, four different pretreatments: mechanical, microwave (600W, 2min), ultrasonic (110V, 15min), and microwave combined with ultrasonic (600W, 2min;110V, 15min) were applied to the seaweed and then co-digested with biogas plant leachate. The aim was to investigate the biogas production and methane yield from AD after these pretreatments. The results showed when comparing with mechanical pretreated only, that the ultrasonic, ultrasonic combined with microwave and microwave pretreatments could obtain increased cumulative methane yields with 167%, 185% and 156% , respectively. The maximum methane yield was 260 ml/g∙VS with combined pretreatment after 20 days of digestion. The ultrasonic combined with microwave pretreatment showed a significant improvement of methane yield when comparing with mechanical pretreatment.

Place, publisher, year, edition, pages
2018. , p. 31
Keywords [en]
methane; seaweed; pretreatments; anaerobic digestion
National Category
Environmental Sciences
Identifiers
URN: urn:nbn:se:hh:diva-37396OAI: oai:DiVA.org:hh-37396DiVA, id: diva2:1228919
Subject / course
Environmental Science
Educational program
Master's Programme in Applied Environmental Science
Examiners
Available from: 2018-08-07 Created: 2018-06-29 Last updated: 2018-08-07Bibliographically approved

Open Access in DiVA

fulltext(1688 kB)8 downloads
File information
File name FULLTEXT02.pdfFile size 1688 kBChecksum SHA-512
8409b6237d627fb84c2189877238f871370c513541f045202de4ee5fbd477f91fd0ddaff2a0835418bb7dec1c39f93f36f8b6f3df4ed44372381b465a9e39cb2
Type fulltextMimetype application/pdf

By organisation
School of Business, Engineering and Science
Environmental Sciences

Search outside of DiVA

GoogleGoogle Scholar
Total: 8 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 19 hits
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