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Joined 1 year ago
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Cake day: July 15th, 2023

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  • This has been posted to a bunch of different communities, and I’m gonna be a stick in the mud each time.

    I’m a process chemist. I do this for a living. I’ve made kilo-scale batches of pharmaceuticals at work that have gone through the regulatory process and made it into people. I went to school for ten years to do this.

    This is a colossally dangerous thing.

    Every time you run a chemical synthesis, you generate impurities. Slightly different temperatures, concentrations, reagent quality, and a million other things will vary the identities and concentrations of those impurities in your product.

    The nature of biochemistry is that most compounds, even at very small concentrations, can have effects. Usually bad ones. So drugs have tight specs on how much of each potential impurity can be present. Usually it’s in the 0.1% range, but sometimes a lot lower.

    Detection of impurities at that level cannot be done with ‘hacker’ gear in your garage. So if you do this, you’re going to be taking unknown quantities of unknown impurities.

    There are trade-offs. If you’re definitely gonna die without the medicine, then the worst that can happen is you die faster, or more painfully. If it’s medicine to maintain quality of life, then you might die fast and painfully.

    I’m not saying the current system is good at all. Medicine is too expensive. It shouldn’t be limited by right wing nutjobs. Those things are true. Those things require a solution.

    This is not a good solution.














  • Plastic that’s got a lot of color (especially black) is very, very hard to recycle. Getting the color out so you can make like-new, colorless plastic makes the economics pretty much impossible.

    Should recycled plastic that isn’t colorless be accepted? Yep. But basically every manufacturer that uses recycled plastic only accepts colorless stuff. Even if they’re going to turn around and dump a bunch of pigment and dye into it! (Or especially if they’re going to do that. They have specific color targets.)

    So, for now, if you buy something that’s made from recycled plastic but isn’t clear and colorless, that plastic is now outside of the recycle-able ecosystem. It’s a bummer.

    But there are ways to get around that coming online. One is to turn the plastic polymers back into monomers (the building block molecules). It’s sometimes easier to separate out the pigments and dyes once you have a chemical soup of monomers instead of a block of plastic. Then you take the purified monomers and repolymerize them. Bam, you have recycled plastic that’s nearly indistinguishable from new.

    I worked on a chemical recycling / depolymerization project for a couple of years. That tech is currently being scaled up into a big plant that’ll actually churn out like-new plastic from really crappy input material. Pretty exciting stuff. (As long as the business and engineering guys running the project now don’t ruin it.)