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Electronic waste: https://en.wikipedia.org/wiki/Electronic_waste https://en.wikipedia.org/wiki/Electronic_waste From https://news.ycombinator.com/item?id=44269

Electronic waste: https://en.wikipedia.org/wiki/Electronic_waste https://en.wikipedia.org/wiki/Electronic_waste From https://news.ycombinator.com/item?id=44269481 https://news.ycombinator.com/item?id=44269481 : > From "Turning waste into gold" (2024) https://www.sciencedaily.com/releases/2024/02/240229124612.htm https://www.sciencedaily.com/releases/2024/02/240229124612.h... : >> Researchers have recovered gold from electronic waste. Their highly sustainable new method is based on a protein fibril sponge, which the scientists derive from whey /? e-waste: https://hn.algolia.com/?dateRange=all&page=0&prefix=false&query=e-waste&sort=byDate&type=story https://hn.algolia.com/?dateRange=all&page=0&prefix=false&qu... "“Toasterlike” Process Recovers Rare Earths From E-waste: Flash joule heating can recover important magnet metals" (2026) FJH https://spectrum.ieee.org/rare-earth-minerals-recycling-ewaste https://spectrum.ieee.org/rare-earth-minerals-recycling-ewas... Hydrogen plasma and hydrogen cold plasma can recycle plastic with less energy than FJH, FWIU. I have some notes on a semiconductor fabrication process with just sustainable inputs: Ethyl Lactate, Lignin-Vitrimer, Nitrogen, CO2, Laser-induced Graphene, A-CNT, PCLP Photo-cleavable Lignin Polymer, Hexyl Cellulose But A-CNT need to be encased in something to prevent health hazard if they burn. Phytic acid from e.g. Bran seed is high in phosphorous which might prevent health risks of CNT.

alexandrehtrb 9mo ago
> I have some notes on a semiconductor fabrication process with just sustainable inputs: Ethyl Lactate, Lignin-Vitrimer, Nitrogen, CO2, Laser-induced Graphene, A-CNT, PCLP Photo-cleavable Lignin Polymer, Hexyl Cellulose Yeah, I was thinking of something like that. If there are fewer chemical components, recycling gets easier.
- westurner 9mo ago
  A biodegradable product out of biodegradable inputs would be great for computing Before looking into Lignin I was looking at deoxidizing rGO reduced graphene oxide with hydrogen plasma. I learned that the work functions of graphene and CNT are actually sufficiently different such that the graphene could be a substrate for CNT FET without the charge jumping out of the gate to the board. Salt apparently dissipates electric discharge about as well as silicon. But a plasma process would probably have a lower yield rate unless there are masks, which are expensive to fab but maybe necessary to compete at production scale. Monolithic chip fab is slower but the fabrication plant CapEx and OpEx are lower. LCS SLM with LCoS, CO2 fiber laser / Yb Laser, plain old DUV Some helpful prompts for a sustainablefactory agent skill: Identify and redesign to eliminate production health hazards and environmental hazards Find and compare sustainable alternatives, workarounds, substitutes for Consider cellulose, graphene CNT and other carbon allotropes, CO2, nitrogen

alexandrehtrb 9mo ago

> I have some notes on a semiconductor fabrication process with just sustainable inputs: Ethyl Lactate, Lignin-Vitrimer, Nitrogen, CO2, Laser-induced Graphene, A-CNT, PCLP Photo-cleavable Lignin Polymer, Hexyl Cellulose Yeah, I was thinking of something like that. If there are fewer chemical components, recycling gets easier.

westurner 9mo ago
A biodegradable product out of biodegradable inputs would be great for computing Before looking into Lignin I was looking at deoxidizing rGO reduced graphene oxide with hydrogen plasma. I learned that the work functions of graphene and CNT are actually sufficiently different such that the graphene could be a substrate for CNT FET without the charge jumping out of the gate to the board. Salt apparently dissipates electric discharge about as well as silicon. But a plasma process would probably have a lower yield rate unless there are masks, which are expensive to fab but maybe necessary to compete at production scale. Monolithic chip fab is slower but the fabrication plant CapEx and OpEx are lower. LCS SLM with LCoS, CO2 fiber laser / Yb Laser, plain old DUV Some helpful prompts for a sustainablefactory agent skill: Identify and redesign to eliminate production health hazards and environmental hazards Find and compare sustainable alternatives, workarounds, substitutes for Consider cellulose, graphene CNT and other carbon allotropes, CO2, nitrogen