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Joined 1 year ago
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Cake day: June 4th, 2023

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  • The disposal of organic waste poses an environmental challenge as it emits large amounts of greenhouse gasses including methane and carbon dioxide, which contribute to climate change,

    I mean, yeah, but isn’t it carbon neutral? The coffee comes from the earth, returns to the earth. And couldn’t coffee also be used for biogas?

    natural sand as the particulate’s rough exterior provides more surface area for water and cement to bind

    What further puzzles me is how they decided to use coffee. Surely there are many other waste products that have the required structure. Is coffee the first thing they tried?


  • he team would squirt polyacrylonitrile and Jeffamine polymers in molten form through an electrical current in a technique known as “electrospinning.” The high voltage caused molecular changes in the polymers that saw them become solid again, resembling a scaffold of tiny fibers that attracted water yet maintained mechanical strength.

    Pity they didn’t explain what those materials even are. I wikipedia doesn’t do a good job of explaining it as it looks copy pasted out of a chemistry book.

    Still, 3D scaffold used to grow retina cells sounds pretty cool.