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Electrocoagulation as a high-efficiency strategy for microplastic removal from water: Process optimization and predictive modeling
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Scientists found that a water treatment method using electricity and iron electrodes—called electrocoagulation—can remove 100% of microplastic fibers from water in under 20 minutes, for less than a dollar per cubic meter of water treated. This matters because microplastics are increasingly found in our drinking water and have been linked to potential health concerns, so an affordable, effective way to filter them out could be a big step toward cleaner tap water. That said, this was tested in a controlled lab setting, so more research is needed to confirm it works just as well in real-world water systems.
This study evaluated and optimized the removal of polyester microplastics (MPs) from water by electrocoagulation (EC), while developing a predictive model and estimating operating cost. Synthetic effluent containing polyester MPs (51–150 µm) was treated in a batch EC system using iron electrodes, direct current, magnetic stirring, and NaCl as a supporting electrolyte. A full factorial 2 5 design (32 runs) was first applied to assess the effects of pH, voltage, operation time, NaCl concentration, and initial MPs concentration. Subsequently, a Box–Behnken design (15 runs) was used to optimize the most influential variables. Screening experiments showed high removal efficiencies ranging from 80% to 100%, identifying MPs concentration, NaCl concentration, and operation time as the dominant factors. The regression model showed strong predictive performance, with R 2 = 0.9852 and adjusted R 2 = 0.9655. Under optimized conditions of 200 mg L -1 MPs, 363.64 mg L -1 NaCl, and 18.38 min, complete MPs removal was achieved, with an estimated operating cost of US$0.57 m -3 . These results indicate that EC is an efficient and low-cost strategy for polyester MPs removal, although validation in real effluents remains necessary.
More Papers Like This
Assessing the Removal Efficiency of Microplastics from Water Using Electrocoagulation
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Researchers in Pakistan tested electrocoagulation as an affordable method for removing microplastics from water, measuring removal efficiency across different electrode materials and operating conditions. The technique achieved high removal rates while meeting sustainable development goals around clean water access, with iron electrodes outperforming aluminum.
Evaluating Factors Affecting Microplastic Removal from Synthetic Leachate Using Electrocoagulation
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Landfill runoff (called leachate) can carry tiny plastic particles into soil and groundwater, raising concerns about microplastics contaminating water supplies. This study found that a water treatment method called electrocoagulation, which uses electricity to clump and remove particles, can filter out nearly 98% of these plastic fragments from landfill leachate, and it's cheap enough to be practical for real-world use. This matters because it offers a promising, affordable way to keep microplastics out of the water we may eventually drink.
Evaluating the performance of electrocoagulation system in the removal of polystyrene microplastics from water
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Researchers tested electrocoagulation, a water treatment method that uses electric current to clump particles together, for removing polystyrene microplastics from water. Using aluminum electrodes at neutral pH, they achieved over 90% removal efficiency. This technology could provide a practical and effective way to remove microplastics from drinking water and wastewater, reducing human exposure to these contaminants.
Experimental Investigation of Microplastic Removal from Drinking Water Using Aluminium Electrocoagulation: Process Performance and Operating Parameters
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Researchers tested a method called electrocoagulation, which uses aluminium electrodes and electricity, to remove microplastic particles from real drinking water samples in a small lab reactor. Under optimised settings, the process removed about 80% of microplastics, working best at near-neutral pH and moderate electrical current.
Research progress on electrocoagulation treatment of microplastics in the water environment
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Tiny plastic particles called microplastics are showing up everywhere in our water, and they don't break down naturally, raising concerns about long-term exposure through what we drink. This review rounds up existing research on a promising cleanup method called electrocoagulation, which uses electricity to make plastic particles clump together and settle out of water, making them easier to filter out. While the technology shows real promise for cleaning up drinking water sources, the researchers note there's still work to do on making it more cost-effective and practical for widespread use.
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