CARBON TO CUPCAKES: 6 AMAZING THINGS WE CAN CREATE FROM CARBON DIOXIDE

     Surely you’ve heard of carbon dioxide (CO₂), a greenhouse gas and major contributor to climate change. It’s a clear, colorless, odor-less gas, and we produce a ton of it. Over 35 billion tons per year, actually. To put number that in perspective, that’s more than all of the concrete, steel produced on earth every year!

     What does it mean to actually make a material out of carbon dioxide (CO₂)? Unless you are a professional chemist, chemical engineer, or materials synthesis expert, the concept probably sounds like science fiction. Possibly even magical and unfathomable. After all, how can a colorless, odorless gas be transformed into, say, shoes, bricks, or green fuels, as some are proposing? A lot of people are starting to ask how CO₂ recycling really works or if it could become a full-fledged industry. CO₂ conversion is real, and may be poised more than ever before to make a transformational leap forward.

As an introduction, here are five tangible things that can be made from CO₂, a gas.

Cupcakes  

     When you think about baking soda (and if you’re reading this, you probably are) cupcakes and cookies probably come to mind much more than industrial gases. Yet baking soda (calcium bicarbonate) is a great example of a cheap, useful and economic product that can be manufactured from CO₂. Aside from the baking and food sector, baking soda has a number of uses in industrial processes, including water treatment, steelmaking and metallurgy, concrete, and others.

Lego Figures

      Lego figures are a favorite example of durable plastics, but they are only one example of a range of polymers that can be produced from CO₂. Ethylene and styrene, for instance, crucial materials used to manufacture many of the products that we use and take for granted every day, such as carpets, furniture, and packaging. All can be made using CO₂. The concept of recycling greenhouse gas emissions into plastics and other polymers is truly amazing. It’s also a growing focus of the green chemistry movement, and receiving significant uptake and investment from traditional and new companies in the materials synthesis space.

Skyscrapers

    One of the most mentally jarring concepts in CO₂ conversion is the idea that a gas can be transformed into a durable, solid building material. CO₂ emissions are associated with almost every aspect of conventional cement and concrete manufacturing. That’s why there is growing interest and technology development focused on using those emissions in the fabrication of those same materials. The first step is trapping CO₂ in a mineralized form. From there, the solid mineralized form of carbon (often a carbonate) can be incorporated into cements, concretes, bricks, and other building materials.

Fertilizer

     Yes, carbon dioxide can be used to improve crop yields. This isn’t so strange if you remember that while we animals inhale oxygen and exhale CO₂, plants, on the other hand, thrive on CO₂ and produce oxygen as a waste product. The link between CO₂ and farming is fertilizer. Most nitrogen fertilizers use the chemical “urea”. These are not specialty fertilizers or chemicals; they are actually the used regularly in farms around the world. Urea can and has been produced from CO₂ for decades, and may be on the of the most important CO₂-derived products globally in decades to come.

Carbon Fiber

     Some of the most advanced carbon-based materials are graphene, carbon nanotubes, and carbon fiber. Graphene may be the most hyped material of the early 21st century, while carbon nanotubes and carbon fiber have already found their way into lab-scale, high-tech, and consumer goods markets. As their names suggest, these materials are heavily carbon-based, and extremely tantalizing candidates for CO₂ conversion. The prospect of “supermaterials” like graphene and carbon fiber being produced from a waste product is great marketing, but also great engineering. Research on new materials tends to focus on possible applications, but also techniques to fabricate and manufacture products using the material. Since methods for manufacturing these advanced materials are still rapidly evolving, new approaches like CO₂ conversion can have an important influence on the industry.

     The diversity of products we can make from CO₂ is truly astounding. Imagine a world where one of our greatest liabilities (CO₂) becomes an asset. CO₂ has the potential to be harnessed as valuable input to our materials industries in a way that reduces the carbon intensity of our energy sector and other heavy industries.