This was on Friday 24. April 2026: the Long Night of Research at our campus in Tulln.
Featuring Luis Quiroga Gutierrez in the middle of the cycle, and a poster by Carolina Páez Velez.

Meanwhile, I'm still working on the composter. I'm doing some first tests without any electronic control or even forced aeration. Promising as a first result: the temperature reached 63°C yesterday at the core, after adding 1kg sugar. The passive aeration system with chimney effect seems to be sufficient.

On 24.04.26 I will be holding a stand at the long night of research in Tulln entitled "What's my shit good for?" together with Luis Quiroga Gutierrez and Carolina Paez-Velez, two master students, and my son Raphael.
Experience the cycle: Have you ever wondered how to manage a dry toilet so it does not stink? And a toilet compost so it is hygienically safe and produces abundant crops? Or simply ever asked yourself: "what happens with my shit after I flush the toilet?"
Come and visit us! Konrad-Lorenz-Straße 24, 3430 Tulln, Fr. 24.04.2026

I had the chance to give a lecture about minerals in soils in the frame of the NAHR Salon 2026. Thanks to Ilaria for the opportunity!

This was the title of a spontaneous poster, which I presented at the conference of the Danube region in Tulln, 16.09.2025. About my own experiments with a compost toilet, hands on recycling dealing with the most nutritive resources we all happen to produce every day. 

In early 2024 I started a Facebook group called "Trockentoiletten in Österreich", with the aim to gather like-minded people in Austria interested in the topic, with a focus on going full cycle.
Not sure how it will end, me not being very active on social media. But a start is a start!

Apart of the fact that soil alone will not solve the CO2 emission crisis, I liked the movie
https://kissthegroundmovie.com/

2. December 2019: my PhD Defense!
"Nutrient recycling, and testing methods for diverse fertilizers"
The crowning of 5 years of work at BOKU's Institute of Soil Research.
Looking back, it's been such a rewarding time. The research was exciting, and it's been so enriching to work in a team for 5 years: my supervisors, the master, bachelor and trainee students, the rhizosphere ecology (Rhizo) group, the FERTI-MINE project team, and all other the people I've worked or interacted with.

The defense ended well (!) with french cider, chocolate truffles & salted butter caramels.
Big thanks to all who attended, and those who prepared this great wish card & present!

I am now part of the LEX4BIO, Horizon 2020 project at BOKU!

"Optimizing bio-based fertilisers in agriculture”.
EU Horizon 2020 project to provide a knowledge-base on bio-based fertilisers, collect regional nutrient stock, flow, surplus and deficiency data, assess technological solutions, and develop a toolkit for use of bio-based fertilisers and for their environmental impacts.

Objectives are to optimise the usage of bio-based fertilisers from nutrient-rich side-streams, ensure their safety, build evidence-based trust in their usage and develop the legislative framework. 

From the Natural Climate Solutions website.

Funny interview with Bill Gates reinventing the toilet