Agronomic characteristics of five different urban waste digestates

Journal of Environmental Management
Elina TampioJukka Rintala

Abstract

The use of digestate in agriculture is an efficient way to recycle materials and to decrease the use of mineral fertilizers. The agronomic characteristics of the digestates can promote plant growth and soil properties after digestate fertilization but also harmful effects can arise due to digestate quality, e.g. pH, organic matter and heavy metal content. The objective of this study was to evaluate the differences and similarities in agronomic characteristics and the value of five urban waste digestates from different biogas plants treating either food waste, organic fraction of organic solid waste or a mixture of waste-activated sludge and vegetable waste. The digestate agronomic characteristics were studied with chemical analyses and the availability of nutrients was also assessed with growth experiments and soil mineralization tests. All studied urban digestates produced 5-30% higher ryegrass yields compared to a control mineral fertilizer with a similar inorganic nitrogen concentration, while the feedstock source affected the agronomic value. Food waste and organic fraction of municipal solid waste digestates were characterized by high agronomic value due to the availability of nutrients and low heavy metal load. Waste-acti...Continue Reading

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Citations

Feb 17, 2019·Waste Management & Research : the Journal of the International Solid Wastes and Public Cleansing Association, ISWA·Jing HuangGuangqun Huang
Dec 19, 2019·Environmental Science and Pollution Research International·Marzieh Taghipour, Mohsen Jalali
Sep 17, 2020·International Journal of Environmental Research and Public Health·Michela Langone, Daniele Basso
Feb 15, 2019·Waste Management & Research : the Journal of the International Solid Wastes and Public Cleansing Association, ISWA·Mohanakrishnan Logan, Chettiyappan Visvanathan
Jul 30, 2020·The Science of the Total Environment·Michele MariniMarianne Thomsen
Mar 10, 2019·Journal of Environmental Management·Andreina LaeraEric D van Hullebusch
May 16, 2021·Waste Management·Aleksandra Chuda, Krzysztof Ziemiński
Oct 20, 2018·Environmental Science & Technology·Maureen Le BarsEmmanuel Doelsch

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