|Stex is a spin-off from a group which between 2012 and 2017 developed a process to obtain Bioethanol from Eucalyptus residues. In 2015 we identified a more mature legal framework in Europe and we found non-exploited opportunities to implement our concept of Biorefineries (small scale, flexible and modular). In 2019 we made a technological agreement with the National Laboratory of Energy and Geology (LNEG), created a new 100% Portuguese company and we started to operate within LNEG campus in Lisbon a pilot unit.|
Our technology will contribute to the transition to a carbon neutral society by liquid biofuels with neutral emissions, obtained from residues, as forest residues (FR), agriculture or municipal solid wastes (MSW).
In the the case of FR, we aim to change the way the forest exploitation is seen. Currently, logs are used in paper and sawmill industries and FR is seen as a burden that needs to removed to avoid fires. But, these fires still happen and FR is used just to be burned directly to produce electricity. Our proposal is to extract valuable products, as Bioethanol, before the burn, increasing the added value, creating new markets and generating jobs, while the forest sustainability is ensured.
In the case of MSW, in Portugal, more than 50% have the landfill as the final destination. Our technology allows to produce Bioethanol from these residues, besides compost and biomethane, in a process fully developed with the LNEG. In this way it is possible to tackle two problems at once: to reduce the MSW by its valorization and to contribute to greenhouse gas emission mitigation.