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Wetland biomass - suitable for biogas production?
Halmstad University, School of Business and Engineering (SET).
2013 (English)Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

Wetlands have long been used as natural waste water treatment systems to remove excess nutrients from agriculture or other waste waters. Common reed (Phragmites australis) is the most prominent feature of wetlands in Sweden. This wetland vegetation needs to be harvested and can be used as substrate for biofuel production. In this study, common reed and submerged vegetation from two wetlands outside Halmstad have been harvested in August and October and have been used as substrate for anaerobic digestion in a laboratory experiment. August harvested common reed produced on average 147 ml CH4/g VS, October harvested common reed produced 150 ml CH4/g VS while August harvested free floating vegetation produced 130 ml CH4/g VS. Similar methane production was seen from reed harvested in August and reed harvested in October, but the dry weight of October harvested reed is much higher indicating that harvesting in October can be beneficial not only because of more biogas production but also because a late harvest reduces the amount of biomass to be harvested and transported. Apart from that harvesting in October will not affect the migratory birds which use wetlands as resting place during autumn migration. 

Place, publisher, year, edition, pages
2013. , 28 p.
National Category
Environmental Sciences
Identifiers
URN: urn:nbn:se:hh:diva-22397OAI: oai:DiVA.org:hh-22397DiVA: diva2:625026
Subject / course
Environmental Science
Supervisors
Examiners
Available from: 2013-06-04 Created: 2013-06-03 Last updated: 2013-06-04Bibliographically approved

Open Access in DiVA

Thesis-Viswa Raj Akula(1982 kB)2721 downloads
File information
File name FULLTEXT01.pdfFile size 1982 kBChecksum SHA-512
96d9d77fb520a373c73b84e650e4a71f0743a549f74b3d84878d31798992c3626919c00f1fab5400a30c5bc053b64d1f2454be18de9cddf10b227b23b132191d
Type fulltextMimetype application/pdf

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • 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