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Green walls are the forest of a modern city

We have known since school that plants purify the air. This is especially important for the stone jungle - modern cities. Here are some inspiring examples that have already been implemented in different parts of the world.

One of the easiest ways to green the city and make the air cleaner is to use the facades of buildings to place as much greenery there as possible.
Source: https://www.tensile.com.au/project/one-central-park/
The green facades surrounding the One Central Park complex are the first of their kind in the world. A total of 15,000 m of stainless steel cables and rods cover 34 floors on 3 facades of two buildings, supporting more than 2,500 vines. Tensile has carried out large-scale design and modeling, including wind tunnel studies, to understand the impact on plants in the air at an altitude of more than 110 meters. This made it possible to bring the technology of green facades to a new level.
Photo by Zac Wolff on Unsplash
Photo by Danist Soh on Unsplash
Photo by Jw. on Unsplash
Photo by Lily Banse on Unsplash
Source: https://www.dezeen.com/2021/04/21/2177-third-street-woods-bagot-living-wall/
The facades of this factory in an industrial park near Ho Chi Minh City are covered with layers of greenery that protect from rain and sun, and also help to purify the air.
Source: https://www.dezeen.com/2022/11/01/jakob-factory-rollimarchini-g8a-architects/
However, it is possible to create walls covered with plants even at the stage of the material from which they will be built. So UVA researchers printed living walls on a 3D printer, from which greenery sprouts.
Source: https://www.dezeen.com/2022/09/05/university-of-virginia-3d-printed-soil-seed-walls/
Zenger, a horticulturist, and Wu, a computer scientist, combined moss (one of the oldest green forces) with advanced Internet of Things technologies to create the world's first sustainable biotechnological air filter. The slogan of their company is "We grow fresh air".
Source: https://www.eurekanetwork.org/blog/green-city-solutions-refresh-air-pollution-s-primeval-enemy-moss
Moss in Green City Solutions products filters up to 82% of fine dust particles due to electrostatic binding (moss is negatively charged, and fine dust is positively charged). Moss "eats" half of the fine dust it absorbs, turning it into biomass, a quarter is biodegradable by bacteria, and the remaining quarter is stored in sediments.

Peatlands are known for their ability to capture carbon, and individual moss is no different. Half a square meter of moss can absorb a huge kilogram of carbon dioxide. It's more than a small forest. The surface area of moss is 30 times its size, which allows it to store and evaporate water, thereby reducing the ambient temperature by 4 degrees Celsius.
Source: http://www.tea-after-twelve.com/all-issues/issue-03/issue-03-overview/chapter1/city-tree/
CityTree from Green City Solutions is a green vertical wall covered with real greenery. It filters the same amount of solid particles as 275 trees, but takes up 99% less space.
And how would you rate the air quality in your city? Take a short survey to share your opinion! Go to the question of air quality in the city
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