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Comparative analysis of biogas slurry and urine as sustainable nutrient sources for hydroponic vertical farming
Linköping University, The Tema Institute, Department of Water and Environmental Studies. Linköping University, Faculty of Arts and Sciences.
2013 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Sustainable alternatives to using mined nutrients in agriculture must be found in order to limit environmental impacts such as eutrophication, habitat destruction and greenhouse gas emis-sions. Biogas slurry and urine recycled to hydroponic food production (a type of soilless agri-culture) have the potential of providing inorganic nitrogen and phosphorus, the main essential nutrients required for plant growth. A Life Cycle Inventory Assessment (LCI) methodology has been used to compare the systems of producing artificial fertilizer, biogas slurry and urine based nutrient solutions for the growth of Brassica rapa L. (Chinese cabbage) in the context of a large scale hydroponic vertical farm. Costs and energy requirements have been the basis of the comparison and results show that both biogas slurry and urine are considerably cheaper than the commercial alternative and based on the nutrient content they have the potential of being successful nutrient solutions after dilution and nutrient supplementation. Filtration might also be required in order to remove suspended particles and pathogens. 

Place, publisher, year, edition, pages
2013. , 36 p.
Keyword [en]
biogas slurry, hydroponics, LCI, urine
National Category
Environmental Sciences
URN: urn:nbn:se:liu:diva-96368ISRN: LIU-TEMAV/MPSSD-A-13/007--SEOAI: diva2:641017
External cooperation
Plantagon AB
Subject / course
Master´s Programme in Science for Sustainable Development, 120 ects
2013-05-28, Linköping, Sweden, 11:13 (English)
Available from: 2013-08-20 Created: 2013-08-15 Last updated: 2013-08-20Bibliographically approved

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Department of Water and Environmental StudiesFaculty of Arts and Sciences
Environmental Sciences

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