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Leachate treatment and anaerobic digestion using aquatic plants and algae
Linköping University, The Tema Institute, Department of Water and Environmental Studies.
2010 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Phytoremediation as a way to control and lessen nutrient concentrations in landfill leachate is a cheap and environmentally sustainable method. Accumulated nutrients in the plants can then be removed by harvesting and anaerobically digesting the biomass. This study presents two aquatic plants (L. minor (L.) and P. stratiotes (L.)) and one microalgae species (C. vulgaris (L.)), their capacities for growth and nutrient removal in leachate from Häradsudden landfill, Sweden, are investigated. The biogas potential of the two plants is determined via anaerobic digestion in a batch run, followed by a lab-scale reactor run for L. minor only. Results show that growth in leachate directly from the landfill is not possible for the selected species, but at a leachate dilution of 50% or more. Nutrients are removed in leachates with plants to a higher extent than in leachates without, yet the actual amounts do not differ notably between plant species. L. minor proves a better choice than P. stratiotes despite this as growth is superior for L. minor under the experimental conditions of this study. Considering biogas production, L. minor gives more methane than P. stratiotes according to the results from the batch run. The former is however not suitable for large-scale anaerobic digestion unless as an additional feedstock due to practical cultivation issues.

Place, publisher, year, edition, pages
2010. , 41 p.
Keyword [en]
Anaerobic digestion, Landfill leachate, Lemna minor, Phytoremediation, Pistia stratiotes
National Category
Environmental Sciences
Identifiers
URN: urn:nbn:se:liu:diva-57512ISRN: LIU-TEMAV/MPSSD-A--10/011--SEOAI: oai:DiVA.org:liu-57512DiVA: diva2:326223
Uppsok
Physics, Chemistry, Mathematics
Supervisors
Examiners
Available from: 2010-06-23 Created: 2010-06-22 Last updated: 2011-04-26Bibliographically approved

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • 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