Author: Corneel Bogaert

The “Agronautics: Merging Space & AgriFood” workshop, held at Wageningen on 22 April 2024, brought together stakeholders from the space and agrifood sectors to facilitate the exchange of knowledge and technology. Organised in collaboration by the ESA Technology Broker NL, agrifood accelerator StartLife and OnePlanet Research Centre, the event showcased space-inspired innovations aimed at advancing farming practices on Earth.

Space farming

To achieve this, a closed research facility in the form of a dome will be developed. Remarkably, this dome won’t solely rely on plants; bees will aid in pollination, while worm hotels will facilitate organic matter composting. Mealworms, in particular, emerge as vital contributors to the circular food system, not only reducing waste but also providing essential amino acids crucial for human health.

The implications of space farming offer potential applications on Earth as well, such as sustainable crop cultivation in arid regions like deserts. Looking forward, the WUR Rethink Food challenge aims to leverage insights from space farming research to innovate terrestrial agriculture. The initiative seeks to inspire participants through a 4-month trajectory spanning January to May 2025. The programme ignites global student enthusiasm for food production on Earth, Moon and Mars. It provides a space where interested students, companies and researchers meet and innovative ideas flourish.

Space food

Transitioning from the celestial fields of space farming, the workshop delved into a more tangible realm – what should we eat during space missions? Spacefood, a German startup making dry fruits and vegetables for space missions, ideal for everyday health, began this journey with a simple question. Why not enjoy our favourite foods, even when far from home? However, the reality of space presents some obstacles. Every crumb and every drop of sauce poses a potential hazard in the microgravity environment. Therefore, the company focuses on dried fruits, packaged in sustainable materials, offering a taste of familiarity without the mess. It is a small, yet significant step towards providing astronauts with nutritious and enjoyable meals that won’t compromise their safety or the efficiency of their missions.

Staying on the food topic, Mag Soar then demonstrated the potential impact of space technology in everyday life. This Spanish company specialises in contactless mechanical systems for the aerospace industry. One of the organisation’s projects –  HERMAT (Highly Efficient, Reliable & clean Magneto mechanical ATomiser) –  focuses on developing a high-speed, contactless and oil-free magnetic gear for use in the food and pharma industries. Magnetic gears, being oil and lubricant-free, reduce the risks of contamination and so could also be suitable for dairy, chemical, pigment and environmental applications. Powder production from liquid, slurry or suspensions is a critical process in these sectors, demanding quality, safety, product sterilisation, purity and lack of contamination. Centrifugal atomisers are currently the only technology capable of handling liquids of different viscosity and density while selecting powder properties. The HERMAT project seeks to offer an innovative solution to meet these demanding requirements, potentially revolutionising various industrial processes.

From waste to taste

MELiSSA (Micro-Ecological Life Support System Alternative) stands as a European project dedicated to developing circular life support systems for producing food, water and oxygen from mission wastes. Its space technology portfolio, encompassing bio-based economy, circular technology, sustainability, cleantech and life sciences, is overseen by its technology transfer partner, SEMiLLA IPStar. Among the sanitation solutions unveiled during the workshop was the “Pee to Tea” concept. Leveraging the same water treatment system used aboard the International Space Station, this concept transforms urine into potable water. This technology offers cost-effective solutions for processing human waste and generating water and nutrients. The sanitation unit, comprising toilets and washing facilities, converts yellow, grey and black water into clean water and nutrients. The aim is to scale-up sanitation systems converting waste into drinking water for entire communities. The concept has been piloted in a refugee camp in Rwanda and has also demonstrated effectiveness in other settings, such as festivals and football stadiums.

Energy farming

As the European Union aims for climate neutrality by 2050, transitioning to renewable energy sources is essential. Metalot introduces the space-inspired concept of iron powder as a circular energy carrier. Iron powder offers a more compact alternative to hydrogen and boasts cost competitiveness due to its circular nature.

Carbon dioxide in the atmosphere poses another significant challenge in our society, contributing to climate change. In fact, reducing emissions alone will be insufficient. Capturing CO₂ from the air is also imperative. Skytree offers technologies to address this issue, capturing CO₂ from the air and storing it for future use. The technology behind this initiative originates from the air filtration systems aboard the International Space Station, where CO₂ is recycled into oxygen, ensuring astronauts have breathable air. Discover more in this ESA BIC interview with the founder.

This capability turns out to be particularly beneficial for greenhouse farmers who utilise CO₂ to enhance crop growth. By providing a steady supply of CO₂ without price fluctuations, Skytree’s solution mitigates the risks associated with sourcing CO₂ from external suppliers. Currently, greenhouse farmers face uncertainties related to CO₂ shortages and price fluctuations, often influenced by changes in fossil fuel prices. Skytree’s integrated solution for on-site CO₂ capture, storage and supply alleviates these concerns.

Smart farming

To complement remote sensing data, Aardvark Sensing showcased its soil-sensing robot. Traditional soil sampling methods are costly, logistically challenging, and limited by human constraints. The ESA BIC incubatee Aardvark offers a solution with its autonomous robot equipped with satellite navigation, providing high-resolution sensor data at scale. The robots enhance soil monitoring capabilities, surpassing the limitations of manual sampling and offering real-time insights into soil health and composition.

The 3D-printed Aardvark robot boasts several advantages. It is cost-effective, autonomous, capable of performing repetitive experiments, operational in any weather condition, and equipped with its own charging station. With precision positioning accuracy of 1 cm and automatic cloud synchronisation, it is employed for generating high-resolution soil moisture maps, detecting early signs of dike erosion and identifying plant biodiversity. Furthermore, its adaptable payload carrier allows seamless integration of a wide range of sensors, catering to diverse agricultural needs. Find out more about Aardvark’s journey at ESA BIC Noordwijk.

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