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Anaerobically-Digested Brewery Wastewater as a Nutrient Solution for Substrate-Based Food Production

Department of Horticultural Sciences, University of Minnesota, Saint Paul, MN 55108, USA
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Horticulturae 2019, 5(2), 43; https://doi.org/10.3390/horticulturae5020043
Received: 30 January 2019 / Revised: 26 April 2019 / Accepted: 10 May 2019 / Published: 2 June 2019
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Abstract

Urban agriculture, due to its location, can play a key role in recycling urban waste streams, promoting nutrient recycling, and increasing sustainability of food systems. This research investigated the integration of brewery wastewater treatment through anaerobic digestion with substrate-based soilless agriculture. An experiment was conducted to study the performance of three different crops (mustard greens (Brassica juncea), basil (Ocimum basilicum), and lettuce (Lactuca sativa) grown with digested and raw brewery wastewater as fertilizer treatments. Mustard greens and lettuce grown in digested wastewater produced similar yields as the inorganic fertilizer control treatment, while basil had slightly lower yields. In all cases, crops in the digested wastewater treatments produced higher yields than raw wastewater or the no fertilizer control, indicating that nutrients in the brewery wastewater can be recovered for food production and diverted from typical urban waste treatment facilities. View Full-Text
Keywords: urban agriculture; reclaimed wastewater; controlled environment agriculture; soilless production; brewery; Brassica juncea; Lactuca sativa; Ocimum basilicum urban agriculture; reclaimed wastewater; controlled environment agriculture; soilless production; brewery; Brassica juncea; Lactuca sativa; Ocimum basilicum
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Riera-Vila, I.; Anderson, N.O.; Flavin Hodge, C.; Rogers, M. Anaerobically-Digested Brewery Wastewater as a Nutrient Solution for Substrate-Based Food Production. Horticulturae 2019, 5, 43.

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