Scientists have created 'liquid trees' as a solution to the city's pollution problems

SOFIA, Bulgaria - April 6, 2023 - PRLog -- Large tanks filled with green algae, called urban photo-bioreactors or "liquid trees", are being touted as a possible solution to air pollution problems in big cities.
The "Liquid Trees" urban photo-bioreactors actually appeared in late 2021, having been developed by scientists at the University of Belgrade in neighboring Serbia. Dubbed "LIQUID 3", the tanks are claimed to be Serbia's first urban photobioreactor designed to remove carbon dioxide (CO2) from urban air.

The 600-liter tank is filled with microalgae that use photosynthesis to convert CO2 into oxygen in the same process that trees and other plants do by harvesting energy from sunlight using chlorophyll.
LIQUID3 represents an alternative sustainable landscaping concept for urban environments that exhibit limited space and heavy pollution.
LIQUID3 is an urban photobioreactor that harnesses the power of microalgae to efficiently remove CO 2 and produce O 2 and biomass.
LIQUID3 replaces one adult tree or 200 m 2 lawn.
LIQUID3 works in winter.
Algae are also more efficient than trees at removing CO2 from the atmosphere, acting between 10 to 50 times faster. One type of algae, Chlorella (Chlorella vulgaris), is up to 400 times more efficient at sequestering CO2 than trees, according to biotech company Hypergiant Industries.
source: https://spiritell.com/%d1%83%d1%87%d0%b5%d0%bd%d0%b8-%d1%... %b4%d0%b0%d0%b4%d0%be%d1%85%d0%b0-%d1%82%d0%b5%d1%87%d0%bd%d0%b8-%d0%b4%d1 %8a%d1%80%d0%b2%d0%b5%d1%82%d0%b0-%d0%ba%d0%b0%d1%82/