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Circularity in prac...
Circularity in practice: reusing restaurant waste for in-house vegetable production
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- Asp, Håkan (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Biosystem och teknologi,Department of Biosystems and Technology
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- Bergstrand, Karl-Johan (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Biosystem och teknologi,Department of Biosystems and Technology
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- Hultberg, Malin (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Biosystem och teknologi,Department of Biosystems and Technology
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(creator_code:org_t)
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- 2021
- 2021
- English.
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In: Acta Horticulturae. - 0567-7572 .- 2406-6168. ; , s. 281-286
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https://res.slu.se/i...
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Abstract
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- Production of biogas is a common way to handle organic waste products and it provides not only energy but also an anaerobic digestate (AD) rich in plant nutrients. In order to create a close loop between food consumption and vegetable production this project was undertaken to see if food waste from a restaurant, could be used to produce a liquid fertilizer for lettuce production to the same restaurant. Growth experiments in a hydroponic set up were made with nitrified AD. The AD was tested as a hydroponic fertilizer at two dilution levels. In one trial the solution was also amended with mineral nutrients and all the trials were compared to a mineral nutrient control. Results indicate that it is possible to use the digestate as a fertilizer for lettuce, and that amendment with certain mineral nutrients enhances the growth. Plant concentrations of Na and Cl indicates that there might be a problem with toxicity but it was not clarified by these experiments.
Subject headings
- LANTBRUKSVETENSKAPER -- Lantbruksvetenskap, skogsbruk och fiske -- Trädgårdsvetenskap/hortikultur (hsv//swe)
- AGRICULTURAL SCIENCES -- Agriculture, Forestry and Fisheries -- Horticulture (hsv//eng)
Publication and Content Type
- ref (subject category)
- kon (subject category)
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