Electrochemical impedance spectroscopy investigation of adsorption-precipitation mechanisms governing phosphate removal by fly ash

Key Points

• Phosphate removal efficiencies reached up to 95%, demonstrating the effectiveness of fly ash in treating wastewater.
• Key evidence includes electrochemical impedance spectroscopy analysis revealing distinct adsorption and precipitation processes.
• Observational analysis with electrochemical impedance spectroscopy evaluates the mechanisms involved in phosphate removal.
• This investigation highlights the potential of fly ash for effective water treatment, promoting sustainable waste management practices.