Chemistry

Scientists transform plastic bottles into activated carbon for water purification

How the science connects

Activated carbonWater purificationPlastic recycling

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This study investigates two methods for converting polyethylene terephthalate (PET) plastic waste into porous activated carbon through potassium hydroxide (KOH) activation: microwave-assisted heating and conventional thermal heating. The research compares the efficiency, carbon structure, surface area, and adsorption properties of activated carbon produced by both methods. Results demonstrate that microwave-assisted activation produces activated carbon with comparable or superior properties to conventional methods while requiring significantly less processing time and energy.


This work provides a practical pathway for transforming abundant plastic waste into valuable activated carbon materials used in water purification, gas storage, and environmental remediation. The microwave approach offers a more energy-efficient and time-saving alternative to conventional methods, making plastic waste upcycling more economically viable and scalable.


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Source: Upcycling PET waste into porous activated carbon via KOH activation using microwave-assisted and conventional direct thermal approaches