To prevent or absorb pollution?

Spanish version

And this week I want to tell you about new trends of construction material that help to drastically reduce pollution levels generated by traffic and factories.

Depolluting, what is this? It´s a substance that has been created by LafargeHolcim company, its mixed with any type of concrete and pavement then it´s possible to use this substance for walls, tunnels, parking lots and highways.

Picture by Materialist

But you ask yourself, how does it work? The depolluting reacts with carbon dioxide, which is produced by the motors, converting carbon dioxide to solid innocuous products similar to salt. This salt then dissolves and is washed away by the rain. Sunlight is not necessary for this process, Depolluting can work day and night. The process is accelerated by more pollution.

Depolluting has been used in Spain and France with good results. We don´t know about the price, but I think that it´s a great system to eliminate pollution.

Bamboo: It´s a quickly renewable resource, a good alternative to wood, their collection doesn´t create deforestation. It´s ecologic, natural and sustainable, and also absorbs 30% more CO2 than the trees.

  • It´s flexible and light in weight
  • It´s cheaper
  • It´s usable in hot and humid weather
  • It´s very durable

The inconvenience of Bamboo is that it isn´t a European crop and it´s necessary to consider the cost of import.

Picture by Eco Planeta verde

Tarps: The big advertising banners, on the walls of buildings, can absorb CO2 like a sponge. The first is already on a building, you can find it on Gran Vía Street in Madrid. It alone can absorb 85% of pollution compared to a thousand trees in a year.


A Bridge: It works like a plant during photosynthesis. It consumes CO2 and cleans the air. This bridge is in Barcelona and is called Sarajevo Bridge.

The inconvenience is the price because it´s about 15% more expensive.

Lamp microalgae: This lamp is self-sufficient, all it needs is sun rays, CO2 and some nutrients to survive on the street. These algae produce electricity at night when it stops the photosynthesis process. During this time, the algae releases that energy to power LED lights, which illuminate the street.

It´s possible to use these lamps inside because the lamp also runs with artificial light, therefore it is very good to use for parking lots.

Pictures by unocero and ecoesfera

I know many city halls plan to use these materials and products in our cities and communities around Spain. Do you know if these plans exist in your country?

What is better, to prevent or absorb pollution? Do you believe that city halls should subsidize if people use these materials? Or on the contrary, do you think that it is better to reduce traffic?