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Business of climate change
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How Hong Kong carbon-capture firm CS Tech will help construction industry lower its emissions

  • The firm is working to not only capture emissions on site from chimneys in Hong Kong, but also to permanently store carbon in construction materials, co-founder and CEO Dixon Chan says
  • CS Tech’s first carbon-capture system is being manufactured in Europe as part of a pilot project

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A construction site in Hong Kong’s Kai Tak area. Photo: Jelly Tse
Martin Choi

An environmentally friendly building materials entrepreneur is bringing carbon capture and utilisation technology to Hong Kong with the aim of helping the construction industry reduce its emissions.

Founded in 2022, Hong Kong-based CS Tech Solution is working in its research-and-development centre in Tuen Mun to not only capture carbon emissions on site from chimneys, but also to permanently store it in construction materials, a first in the city, its co-founder and CEO, Dixon Chan, said in an interview.

“We would like to produce something that is low carbon and provide [it] to the Hong Kong construction industry,” Chan said. “That is why we came up with the idea to do carbon-capture utilisation.”

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Carbon capture and utilisation refers to a range of applications through which carbon dioxide is captured and used in various products, according to the International Energy Agency (IEA). New utilisation methods, for instance through the production of carbon dioxide-based synthetic fuels, chemicals and building aggregates, are gaining momentum, according to the IEA.

Chan founded Tiostone Environmental Limited in Hong Kong, a building materials supplier providing environmentally friendly precast concrete products made with recycled aggregates and glass to local developers and the construction industry, in 2008.

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The captured carbon dioxide from CS Tech can be used in Tiostone’s products and provided to other construction industry players, Chan said. “I don’t think one single technology can achieve net zero or carbon neutrality, so we need different technology [and] concepts to work together to achieve net zero,” he added.

CS Tech co-founder and CEO Dixon Chan at COP28 in Dubai. Photo: Handout
CS Tech co-founder and CEO Dixon Chan at COP28 in Dubai. Photo: Handout
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