Plants Powering Pollution-Fighting Batteries

Industrial wastewater often contains harmful pollutants like p-chlorophenol (4-CP) and hexavalent chromium (Cr(VI)). Scientists are looking for ways to clean up this mess and create energy at the same time. They've been experimenting with a type of plant called Leersia hexandra and a clever system called constructed wetland-microbial fuel cells (CW-MFC). Imagine a garden that can clean water and produce electricity! This is what the scientists created. They designed three different setups, using stacks, multiple stages, and modules. Each setup had Leersia hexandra plants, and they tested how well these setups could remove 4-CP and Cr(VI) from wastewater.

The modular setup turned out to be the best at removing these pollutants. It even generated some power—about 254. 0 millivolts of voltage and 150. 60 milliwatts per cubic meter of power density. This shows that using plants and these special systems could be a great way to clean wastewater and produce sustainable energy. More research could really push wastewater treatment forward and help us make cleaner energy.

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