Researchers at the National University of Singapore have developed a nanobiochar material made from upcycled pomegranate peels. This carbon-based purifier removes over 94 percent of 4-nitrophenol, a toxic industrial pollutant used in pesticides and dyes, without requiring harsh chemical activating agents. The production process involves heating fruit waste to 600 degrees Celsius and using ball milling to create nanoparticles. This increases the surface area for capturing pollutants. Initial tests show the material remains effective even after multiple reuse cycles, offering a low-cost alternative to energy-intensive wastewater treatment methods.
