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Citations since 2017
19 Research Items
I am an agricultural scientist, specialized in fertilization, nutrient cycling, soil matter dynamics and GHG emissions. I am interested in closing nutrient cycles and integrating novel recycling fertilizers, as well as increasing the sustainability and resilience of agricultural production systems. Currently I am focussing on soil quality assessment and how to effectively adapt farm soil management.
Recycling nutrients is essential for closing nutrient loops within a circular economy. Using locally available resources such as human excreta to produce bio-based recycling fertilizers can substitute mineral fertilizers and thereby promote environmentally friendly food production. To better understand the fertilizer potential and nitrogen value of...
A variety of organic feedstocks can be used for anaerobic digestion, resulting in digestates with different compositions, affecting the fertiliser value. Therefore, two experiments were conducted to assess (1) differences in the nitrogen (N) fertiliser value of seven digestates from different feedstocks in a 2-year field experiment with spring whea...
Dieser Bericht befasst sich mit Inhaltstoffen von Kompost aus Inhalten von Trockentoiletten und leitet hieraus ein Risikopotenzial für betreffende Stoffe ab. Die Risikoanalyse ist Teil der DIN SPEC 91421.
Soilless culture systems offer an environmentally friendly and resource-efficient alternative to traditional cultivation systems fitting within the scheme of a circular economy. The objective of this research was to examine the sustainable integration of recycling fertilizers in hydroponic cultivation—creating a nutrient cycling concept for horticu...
The average nutrient concentrations values presented in Table 1 on page 4 in the publication have the unit mg L⁻¹ for the mineral nutrients Fe, Zn, B, Mn and Cu and must read as follows
A Correction to this paper has been published: https://doi.org/10.1007/s11356-021-15054-3
Human excreta are a sustainable, economical source of nutrients, and can be used to produce recycling fertilizer for horticulture by collecting and processing the contents of dry toilets. Herein, we discuss the key categories of risk associated with the main groups of materials commonly found in dry toilets. The study was part of the development of...
A transformation towards sustainable food production requires improved circular nutrient management. Urban organic waste contains relevant nutrients and organic matter, yet only 4% of global urban nitrogen (N) and phosphorus (P) sources are presently recycled. One recycling approach is the composting of urban wastes for urban horticulture. We chara...
Anaerobic digestion (AD) can generate biogas while simultaneously producing digestate which can be used as fertilizer. Feedstocks used for AD influence digestate composition, which in turn may affect carbon (C) and nitrogen (N) turn-over in soils and subsequently influence nitrous oxide (N 2 O) emissions after soil application. Assessment of greenh...
Soilless culture systems offer an environmentally friendly and resource-efficient alternative to traditional cultivation systems fitting within the scheme of a circular economy. The objective of this research was to examine the sustainable integration of recycling fertilizers in hydroponic cultivation-creating a nutrient cycling concept for horticu...
Recycling nutrients is essential to close nutrient loops within a circular economy. Using locally available resources, such as human excreta, to produce bio-based recycling fertilizer can substitute mineral fertilizers and thereby promote an environmentally-friendly food production. To better understand the fertilizer potential and N value of human...
Operating within a scheme of circular economies (CE) and the incorporation of nutrient cycling are principle components of future sustainable food systems (Springmann et al., 2018). The socio-political awareness of CE has prompted interest into classifying waste as a resource in economies of the future. Recycling-fertilizers are one such example of...
The need for sustainable food production systems to stay within the planetary boundaries also requires the recycling of waste, thus establishing a circular economy (CE) (Springmann et al., 2018). Along the nexus of food-water-energy, sanitized human excreta provide a large nutrient source of nitrogen (N) and phosphorus (P), particularly in urban an...
Evaluating urine-based fertilizers for horticultural crop production
Evaluating urine-based recycling fertilizers for horticultural crop production; presentation of our work within the SiEUGreen project and as part of the conference session "Recycling and resource reuse as tools for efficient circular economy"
Agroscope’s research programme Indicate develops indicators for positive and negative farm environmental impacts. Recorded by means of new digital technologies, these metrics are intended to support farmers in easily identifying and optimising the ecological services of their farms. Bodencockpit [= ‘Soil Cockpit’] The indicators of this project create a per-plot overview of the state of the soil and the management methods used. A comparison of the current metrics with location-related recommendations as well as with reference values of comparable farms is intended to highlight the potential for improvement.
Aim of the project was to characterize C and N fractions of digestates form different feedstocks and to refer differences in composition to C and N mineralization, N fertilizer value, and short-term N2O emissions.
SiEUGreen aspires to enhance the EU-China cooperation in promoting urban agriculture for food security, resource efficiency and smart, resilient cities. Building on the model of zero-waste and circular economy, it will demonstrate how technological and societal innovation in urban agriculture can have a positive impact on society and economy, by applying novel resource-efficient agricultural techniques in urban and peri-urban areas, developing innovative approaches for social engagement and empowerment and investigating the economic, environmental and social benefits of urban agriculture. In order to achieve its objectives, SiEuGreen brings together a multi-disciplinary Consortium of European and Chinese researchers, technology providers, SMEs, financiers, local and regional authorities and citizen communities. The project consists in the preparation, deployment and evaluation of showcases in 5 selected European and Chinese urban and peri-urban areas: a previous hospital site in Norway, community gardens in Denmark, previously unused municipal areas with dense refugee population in Turkey, big urban community farms in Beijing and Central China. Throughout SiEUGreen’s implementation, EU and China will share technologies and experiences, thus contributing to the future developments of urban agriculture and urban resilience in both continents. The impact measurement during and especially beyond the project period is a key component in the project’s design. Information and results obtained from the project will be disseminated through diverse communication and dissemination tools including, social media, an innovative app enhancing urban codesign, stakeholder conferences, hand-on training workshops, showcase demonstration forums, municipality events. A sustainable business model allowing SiEUGreen to live beyond the project period is planned by joining forces of private investors, governmental policy makers, communities of citizens, academia and technology providers. The project has received funding from the European Union’s Horizon 2020 Research, and Innovation programme, under grant Agreement N 774233 and from the Chinese Ministry of Science and Technology.