Related Experiment Video
Updated: Apr 27, 2026

Implementation of a Hyperbolic Vortex Plasma Reactor for the Removal of Micropollutants in Water
Published on: July 25, 2025
Enhanced sonochemical degradation of perfluorooctanoic acid by sulfate ions
Jo-Chen Lin1, Shang-Lien Lo1, Ching-Yao Hu2
1Graduate Institute of Environmental Engineering, National Taiwan University, 71, Chou-Shan Road, Taipei 106, Taiwan, ROC.
Abstract:
This study investigated the effects of sulfate ions on the decomposition of perfluorooctanoic acid (PFOA) by ultrasonic (US) irradiation at various pHs, sulfate doses, powers and temperatures. The removal of PFOA was augmented with an increased sulfate ion concentration, with PFOA being almost completely decomposed in 90min at 25°C with a sulfate dose of 117mM. The two major mechanisms in the sulfate-assisted sonochemical system are the direct destruction of PFOA by cavitation and the indirect destruction of PFOA by sulfate free radicals. The decomposition of PFOA followed pseudo-first-order kinetics and was not influenced by pH. The reaction rate constants decreased with increases in temperature due to decreases in the surface tension of the solution.
More Related Videos
Related Concept Videos
Electrophilic Aromatic Substitution: Sulfonation of Benzene
Acid Mine Drainage
Microbial Corrosion
Esters to Carboxylic Acids: Saponification
The reaction requires a base in stoichiometric amounts, which participates in the reaction and is not regenerated later. So, the base acts as a...
Microbial Bioremediation of Pesticides
Preparation and Reactions of Sulfides

