Tag

Alkaline Thermal Treatment

All articles tagged with #alkaline thermal treatment

technology1 month ago•4 min saved

Turning Plastic Waste Into Clean Hydrogen With a Low-Temp Alkaline Process

A study published in PNAS describes an alkaline thermal treatment (ATT) that converts mixed plastic waste into high-purity hydrogen at lower temperatures with negligible direct CO2 emissions, potentially tackling both plastic pollution and clean-energy needs. Lab tests on PET, PE, and PP show hydrogen yields comparable to pyrolysis/gasification, with a need for pre-treatment of some plastics. While promising, researchers caution that scalability, economic viability, and full life-cycle environmental impact still require further research, along with handling contaminated plastics and recycling the sodium hydroxide.

via Gizmodo|

#alkaline-thermal-treatment #energy-transition #hydrogen

energy1 month ago•10 min saved

Unsorted plastic waste yields 90% hydrogen in a single-reactor process

Researchers from UCLA and Ewha Womans University demonstrated a lab-scale, single-reactor Alkaline Thermal Treatment (ATT) that converts a mixed, unsorted stream of PET, PE and PP plastics into hydrogen gas with over 90% purity, without emitting CO2. The process uses heat, sodium hydroxide, and a mild oxidation pretreatment, and the plastic-derived carbon is captured as sodium carbonate (with potential to become calcium carbonate for construction). While promising for reducing plastic waste and decarbonizing hydrogen, significant scaling and economic viability work is needed before it can be deployed in municipal plants.

via Interesting Engineering|

#alkaline-thermal-treatment #co2-free #energy