Giant vacuum turns smog to diamonds

Smog Free Tower
Netherlands (Rotterdam)

Imagine if you could donate clean air to the city simply by buying a ring or set of cufflinks? But this black bling is filled with smog pollution from factories, cars, or rubber from tyres.

You know what they say: when life gives you lemons, make lemonade. If it gives you smog, make diamond rings…

Quirky Dutch artist Daan Roosegaarde believes that good design isn’t about luxury items, but about clean air, water and energy. He was inspired to create Smog Free Project after looking out his hotel window in Beijing and realising he simply couldn’t see the city, describing China’s chronic smog as “a horror”.

So he decided to commit to a better future – by putting a ring on it.

“I’m a voluntary prisoner of my own imagination,” he tells us, “and get joy out of making new dreams for a better world.”

With his social design lab Studio Roosegaarde, Daan is providing creative local solutions to clean air in public spaces with a series of urban design innovations that reduce pollution, while providing an original experience of a clean future.

An estimated 800,000 people die prematurely each year in Europe due to the effects of air pollution. So the studio started by building the largest air purifier in the world. The solar-powered, seven-metre tall Smog Free Tower sucks pollutants out of dirty cities, filters them and returns clean bubbles of breathable air through vents in its six sides. It’s no wonder it’s been compared to “a giant vacuum cleaner”.

The tower’s filtering unit uses ionic filters to charge and remove particles of smog, cleaning 30,000 cubic metres of air an hour (approximately the size of 100 swimming pools) through a patented ionization-technique, which is similar to hospitals’ air purification systems. This form of filtering captures even the smallest particles from the air and doesn’t create ozone in the process. 

In September 2015 Roosegaarde created clean air zones in cities by taking the super-sized filtering tower to Rotterdam, before going on to Mumbai and Beijing in 2016, both cities that suffer from very poor air quality. A study by Eindhoven University of Technology showed that Roosegaarde’s creation effectively reduced pollution up to 45% within 20 metres (65 feet).

Today the Smog Free Project has successfully opened in more cities in China and Poland with the support of the respective governments. A Smog Free Tower was also revealed at the International Architecture Biennale Rotterdam and the project will continue to travel to more polluted cities around the globe  – bringing together governments, NGOs, the cleantech industry and ordinary citizens to bring awareness to cities so they get inspired to create more smog free solutions. They eventually want to take the tower to Mexico City, Paris and Los Angeles. 

“We will continue to develop our clean air journey with new smog free innovations to be released in the coming years. We can wait – or we can participate.”

Although it offers a refreshing approach to a global problem, and has received worldwide recognition and awards, the smog-sucking tower has limitations as a solution to environmental issues on a large scale – partly as the filters are so expensive (the cost hasn’t been disclosed). “The only way to stop smog is to stop making smog.” However, the artist is building awareness of the pollution problems in booming cities, to inspire designers, non-profit leaders and policymakers to think of more solutions to the air-pollution problem.

To close the waste cycle completely, the studio is making Smog Free Jewellery, which is exactly what it sounds like. Under high pressure, carbon becomes a diamond. As nearly half of the fine black pollution powder collected by the towers is carbon, the team can create and sell high end jewellery, which supports the creation of more towers. With each piece, you donate 1000m3 of clean air to the city.  The studio have also discovered how interesting it is to compare the various cities’ smog under a microscope, as they work as a “social scan”. 

Daan’s team don’t want the towers to be a one-off, artistic project. They have also created the Smog Free Bicycle, an idea that came from a workshop the studio hosted in Beijing. It’s possible to cycle and clean the air as the air-purifying bike inhales polluted air, cleans it, and releases clean air around the cyclist.

Studio Roosegaarde’s vision is not limited to Planet Earth. Together with his team of designers and engineers, Daan is developing a larger programme tackling the smog of the universe: Space Waste will investigate how to recycle floating space waste into sustainable products.

“I believe our current urban problems are caused by bad design – and creativity should lead the way out of it. There isn’t a lack of money or technology. There is a lack of imagination,” he adds. “The future is clean air, clean water and clean energy. We are all makers and can take action.”

AtlasAction: Order Smog Free Jewellery and visit the Space Waste Lab and check out Studio Roosegaarde’s psychedelic jellyfish-inspired Smart Highway,

Written by

Lisa Goldapple, Editor, Atlas of the Future (07 August 2020)

Project leader

Daan Roosegaarde, Studio Roosegaarde


This project has been selected as part of CultureFutures, a new storytelling project that maps creative and cultural projects with a social mission – and the artists, collectives and entrepreneurs behind them.

Atlas of the Future is excited to join forces with Goldsmiths Institute of Creative and Cultural Entrepreneurship and the British Council Creative Economy.

Support the Atlas

We want the Atlas of the Future media platform and our event to be available to everybody, everywhere for free – always. Fancy helping us spread stories of hope and optimism to create a better tomorrow? For those able, we'd be grateful for any donation.

Creative Commons License



  1. Debasish Dash

    Please inform me the operational procedures and the price factor . can it be place be placed in public places.

Take me somewhere
Take me somewhere
Data Protection Act: LOPD.
In compliance with Organic Law 15/1999, of 13 of December, on Personal Data Protection, and the development of Rules of Procedure, approved by Royal Decree 1720/2007, of 21 of December, Atlas of the Future subscribers may be required to provide Personal Data, which will be included in a file owned by Democratising The Future Society SL. Such file is duly incorporated in the Spanish Data Protection Agency and protected in compliance with the security measures established in the applicable legislation. Subscribers may exercise, at any time, their rights of access, rectification, cancellation and/or opposition regarding their Personal Data. The subscriber shall notice their will, either under written form addressed to Democratising The Future Society SL, Ref. LOPD, Calabria, 10 6-3 08015 - Barcelona (Spain) and/or by e-mail, clicking here. Also, the subscriber shall communicate Atlas of the Future any modifications of their Personal Data stored, so that the information stored by Atlas of the Future remains at all times updated and error-free.
Get World-changing projects and news in your inbox weekly.