Adverse atmospheric conditions, the evolution of climate change and the increase in emissions contribute to the deterioration of the healthiness of the ecosystem, especially in areas such as the Po Valley. From a future perspective, the topic is crucial and requires effective solutions to mitigate pollution and improve the quality of life in our country. In this regard, some research has demonstrated the effectiveness of microalgae, which thanks to photosynthesis act as real natural filters thanks to the ability to absorb CO2 releasing O2, but are also able to “retain” complex pollutants such as nitrogen oxides (NOx), sulfur oxides (SOx) and fine particulate matter, among the main causes of the smog which suffocates large cities in particular.
The objective of “less CO2, more oxygen” guides scientific research and the study of microalgae is currently booming, also because it is supported by investments from figures such as Bill Gates and by the interest of institutions such as NASA and the European Commission, which support green technologies.
Italy is also active in this field with projects such as MicroalgaeX, founded by Giuliano Regonesi, which focuses on biotechnological research.
From these studies, systems for the purification of urban air were born such as Liquid Forest and Liquid Tree, the latter also exhibited in Paolo Berlusconi’s Milanese studio, who would like “it to be tried in schools, in hospitals. And why not, even in open spaces”.