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Scientists find a simple way to destroy 'forever chemicals' — by beheading them
(www.livescience.com)
this post was submitted on 07 Mar 2024
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You do realize, many of those "forever chemicals" have no alternative? PFOA for example is essential for modern production, because there is no other material known to withstand the temperatures and pressures needed in the production processes? So the alternative is either not to use them at all, with ALL the consequences - or we have use a proper way to dispose them.
Purification Plants are the same ~~argument~~ analogy.
Depending on their impact, it is often worthwhile to seek alternatives that are less effective or convenient, but also less dangerous. We've had materials in the past which were also deemed "essential", and yet we moved away from them.
A lot of miracle substances tend to be extremely dangerous. There's nothing quite like asbestos when it comes to fire and heat resistance, but we can still make firefighters' clothes, or fireproof buildings, or brakes, even if it means they're heavier or harder to manufacture. R134 and especially R12 make fantastic refrigerants for car AC systems, but we phased those out in favor of substances that are more complex and costly to implement because of the calamitous effect they had on the ozone layer. Carbon tet is an incredible solvent and great at extinguishing fires too. But we don't use that anymore either.
You could be right, maybe there is truly no way around PFOAs, but I'm just calling out a pattern here. And maybe there's no workaround right now that doesn't cause more harm, but with enough research and investment, we can get there in the future.
Well, since working in the industry, i can say with a very high confidence: There will be substitutes, but not for everything - at least at this point in time. There may soon very well be a breakthrough in material science, but at this point there is no alternative in some use cases (like gaskets, that have to sustain extreme temperatures and pressures...).
But i absolutely do agree with you.
Good old copper is pretty hard to beat for a high temp/pressure (or vacuum). Chemical compatibility can be an issue though.
Viton gets used a lot & I'm struggling to think of alternatives to it.