We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Back cover
Summary
Researchers developed a scalable continuous low-pressure hydrothermal processing method to convert polystyrene plastic waste into valuable monomers, operating without catalysts, producing less char than pyrolysis, and requiring substantially lower pressures than supercritical methods.
Continuous low-pressure hydrothermal processing methods for polystyrene conversion to oilsExponential growth in the use of plastics since the 1950s has generated over 7 billion tons of waste in the landfi lls and oceans that degrades slowly, releasing microplastics and thousands of chemicals harmful to life and ecosystems.This study presents a scalable, continuous low-pressure hydrothermal processing (LP-HTP) method to convert one of the plastics, polystyrene, into valuable monomers-requiring no catalysts, producing less char than pyrolysis, operating at 220 times lower pressure than supercritical water liquefaction, and generating 95% lower green-house-gas emissions than incineration.The method has the potential to support a sustainable circular hydrocarbon economy.
Sign in to start a discussion.
More Papers Like This
ПЕРСПЕКТИВИ НИЗЬКОТЕМПЕРАТУРНОГО КАТАЛІТИЧНОГО КРЕКІНГУ ПОЛІСТИРОЛУ ЗА АТМОСФЕРНОГО ТИСКУ
Researchers reviewed low-temperature catalytic cracking of polystyrene at atmospheric pressure as a chemical recycling strategy, emphasizing how it avoids toxic emissions and produces liquid oils and fuel additives. The approach is presented as more energy-efficient than mechanical or thermal recycling methods.
Renewable aromatics from the degradation of polystyrene under mild conditions
Researchers developed a bimetallic iron-copper catalyst that breaks down polystyrene plastic into useful aromatic chemicals at just 250°C, producing a liquid yield of 66% without coke or gas waste. This low-temperature method offers a promising way to convert polystyrene waste into valuable raw materials for industry.
Enhancing sustainable waste management: Hydrothermal carbonization of polyethylene terephthalate and polystyrene plastics for energy recovery
Researchers applied hydrothermal carbonization to PET and polystyrene plastics and found PET produces higher-energy hydrochar with better energy densification (1.37 vs. 1.13) than polystyrene, identifying key structural transformations that determine each material's potential for energy recovery from plastic waste.
Hydrothermal carbonization of plastic waste: A review of its potential in alternative energy applications
Researchers reviewed how hydrothermal carbonization — a process that converts materials into a coal-like substance using heat and water under pressure — can transform plastic waste into useful products like solid fuels, catalysts, and materials for energy storage devices. While the technology is promising, challenges like variable plastic feedstock quality and scaling up production must be addressed before widespread commercial use.
Hydrothermal liquefaction of plastics: a survey of the effect of reaction conditions on the reaction efficiency
This review summarizes how hydrothermal liquefaction, a process that uses hot pressurized water, can be used to chemically recycle waste plastics. Researchers examined how different reaction conditions affect the efficiency of breaking down plastics into useful products. The study suggests that this technique holds promise as a practical approach to addressing the global plastic waste crisis.