LIQUID3:

the new liquid tree

Modern cities are expanding at an increasingly frenetic rate in a race towards the future.

LIQUID3 is a multifunctional structure that uses microalgae with high photosynthetic efficiency to capture CO2 and produce oxygen. The microalgae used are able to absorb 10 to 50 times more carbon than terrestrial plants. Furthermore, LIQUID3 eliminates particulate matter, helping to purify the air. A real artificial tree, fascinating and artfully designed, which doesn't just improve air quality, but also functions as urban decor, a bench, a solar charger for phones and a streetlamp at night.

How did the LIQUID3 project come about?

The idea came about through a multidisciplinary approach at our institute. We were interested in the "Climate Smart Urban Development" challenge established by the United Nations programme for development - UNDP Serbia, the Green European Foundation and the Ministry for Environmental Protection of the Republic of Serbia. So, we created a group made up of biologists and an architect, with the goal of developing a solution for urban regeneration with the use of microalgae.

What are the main strengths of LIQUID3?

Its main strengths are its multifunctionality and its design. If we had developed a system focused on a single function, it wouldn't have been so useful to the community. It is essential that everything that needs to be used in the city is integrated into the urban fabric.

What is the research group's vision in terms of environmental sustainability, and how does LIQUID3 fit into this vision?

We believe that cities need to be a good place to live; they must offer a good quality of life and many opportunities for personal growth. However, this concept is endangered by the intense level of air pollution. Escaping from the city could absolutely be an individual solution, but it is not the most sustainable. We need to fight to improve the situation in our cities.

Can the LIQUID3 project be adapted and implemented in different urban areas?

LIQUID3 can be applied in any urban area, including indoor spaces such as metro stations. We are currently creating another two units for other cities in Serbia. Obviously, a higher number of structures would be much easier to maintain from an economic point of view.

What were the main challenges you encountered during the development process?

We had to address and resolve three main aspects: biological, technical and design. The first required us to find the optimal species of microalgae: robust and diverse, able to tolerate a wide range of temperatures and light levels, with a pleasant colour, and no odour. The technical aspects included construction, electrical installation with a solar power system, and easy access to materials for efficient maintenance. Finally, the design is an essential aspect for acceptance from the public: shape, colour and multifunctionality are the key to its success.

What are the problems the project has faced, or could face in the future?

So far we haven't encountered any major obstacles. We have received great interest from hundreds of companies, cities and entrepreneurs. At the moment, we are working to establish a spin-off company. We are very satisfied with the impact LIQUID3 has had so far on the public and the media, prompting a discussion on nature-based solutions, environmental protection and alternative concepts for regeneration. We hope to generate more and more positive green vibes from now on!

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N° 14

artificial

Staying human
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