Heat from industrial installations and buildings can be captured to create renewable electricity.
Scientists are working to develop devices that can harness waste heat from buildings and industrial uses to produce energy. As Muhammad Muddasar explains in The Conversation, most existing thermoelectric materials used to make such devices contain cadmium, lead, or mercury, toxic and often expensive substances.
Muddasar and other researchers at the University of Limerick and the University of Valencia have discovered a way to use wood-derived materials to convert waste heat. “This approach not only enhances energy efficiency, but also redefines how we view everyday materials as essential components of sustainable energy solutions.”
The research team used lignin, a byproduct of the paper industry, to convert low-temperature waste heat into electricity. “Since around 66% of industrial waste heat falls within this temperature range, this innovation presents a significant opportunity for eco-friendly energy solutions.”
In addition to capturing energy, thermoelectricity also requires storage solutions. Lignin-based porous carbon can also be used in supercapacitors to store energy. According to Muddasar, “This technology could find use in various settings, from providing power in remote areas to powering sensors and devices in everyday applications.”
FULL STORY: How waste heat could be captured and converted into green energy
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