Technologies: Difference between revisions
(+ === Plastics-to-fuel === + Researchers from Purdue University have developed a technology entitled 'Use of Supercritical Water for the Liquefaction of Polypropylene into Oil' that works on polyolefin waste, the sort of plastic used for grocery bags, toys, and shrink wrap...) |
(→Plastics-to-fuel: + 'Chemical Conversion of Plastic Waste into Fuel', a Youtube by Purdue Engineering (2019-02)) |
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=== Plastics-to-fuel === | === Plastics-to-fuel === | ||
Researchers from [[w:Purdue University|Purdue University]] have developed [https://pubs.acs.org/doi/10.1021/acssuschemeng.8b03841 a technology entitled 'Use of Supercritical Water for the Liquefaction of Polypropylene into Oil'] that works on [[w:polyolefin|polyolefin]] waste, the sort of plastic used for [[w:grocery bag|grocery bag]]s, [[w:toy|toy]]s, and [[w:shrink wrap|shrink wrap]]. This sort of plastic accounts for about 23% of [[w:plastic waste|plastic waste]], according to researchers who describe the process in a paper published in Sustainable Chemistry and Engineering, a publication of the [[w:American Chemical Society|American Chemical Society]]. The new technique uses a process called [[w:hydrothermal liquefaction|hydrothermal liquefaction]], in which very high temperatures melt pellets of polyolefin and then dissolve them in [[w:water|water]]. The by-products of this process are [[w:oil|oil]], [[w:gas|gas]], or [[w:solvent|solvent]]s.<ref>https://www.technologyreview.com/f/612935/a-new-chemical-process-could-turn-a-quarter-of-our-plastic-waste-into-clean-fuel/</ref> | Researchers from [[w:Purdue University|Purdue University]] have developed [https://pubs.acs.org/doi/10.1021/acssuschemeng.8b03841 a technology entitled 'Use of Supercritical Water for the Liquefaction of Polypropylene into Oil'] that works on [[w:polyolefin|polyolefin]] waste, the sort of plastic used for [[w:grocery bag|grocery bag]]s, [[w:toy|toy]]s, and [[w:shrink wrap|shrink wrap]]. This sort of plastic accounts for about 23% of [[w:plastic waste|plastic waste]], according to researchers who describe the process in a paper published in Sustainable Chemistry and Engineering, a publication of the [[w:American Chemical Society|American Chemical Society]]. The new technique uses a process called [[w:hydrothermal liquefaction|hydrothermal liquefaction]], in which very high temperatures melt pellets of polyolefin and then dissolve them in [[w:water|water]]. The by-products of this process are [[w:oil|oil]], [[w:gas|gas]], or [[w:solvent|solvent]]s.<ref>https://www.technologyreview.com/f/612935/a-new-chemical-process-could-turn-a-quarter-of-our-plastic-waste-into-clean-fuel/</ref> | ||
''' Links about plastics-to-fuel ''' | |||
* [https://www.youtube.com/watch?v=ZqRbc_0SaVs 'Chemical Conversion of Plastic Waste into Fuel'], a Youtube by Purdue Engineering (2019-02) | |||
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== Hemp tech == | == Hemp tech == | ||
Development of sound hemp products has suffered from the prohibition of the plant since 1937 | Development of sound hemp products has suffered from the prohibition of the plant since 1937 | ||