Lee, Yu-ChiYu-ChiLeeChen, Man-LiMan-LiChenChiueh, Pei-TePei-TeChiuehLiou, Yau-HsuanYau-HsuanLiouSHANG-LIEN LO2012-10-162018-06-282012-10-162018-06-282010https://www.scopus.com/record/display.uri?eid=2-s2.0-76249083011&origin=resultslist&sort=plf-f&cite=2-s2.0-76249083011&src=s&imp=t&sid=d9026cad0acbe4894890386c176f26c0&sot=cite&sdt=a&sl=0The microwave-hydrothermal decomposition of persistent and bioaccumulative perfluorooctanoic acid (PFOA) in aqueous solution using persulfate activated by zero-valent iron (ZVI) at 60 and 90 °C was examined. The results of laboratory study reveal that when PFOA is treated with 5 mM persulfate (PS) and ZVI at 90 °C for 2 h, 67.6% of PFOA is effectively decomposed to form shorter-chain perfluorinated carboxylic acids (PFCAs) and fluoride ions, with 22.5% defluorination efficiency. Introducing ZVI into the PFOA solution with PS addition will lead to synergetic effect that accelerates the PFOA decomposition rate, and reduces the reaction time. ZVI not only decomposes PFOA, but also releases ferrous ions to lower the activation energy of PS while forming sulfate free radicals at a lower reaction temperature. The combined use of ZVI and persulfate will lead to significant savings in energy consumption and reduction of process time. © 2009.en-US[SDGs]SDG7Activation energy; Energy utilization; Fluorine compounds; Free radicals; Microwaves; Sulfur compounds; Hydrothermal decomposition; Perfluorooctanoic acid; Persulfate; PFOA; Zero-valent iron; Iron compounds; ferrous ion; perfluorooctanoic acid; peroxysulfuric acid; unclassified drug; zero valent iron; activation energy; aqueous solution; bioaccumulation; decomposition; free radical; iron; low temperature; organic acid; reduction; water chemistry; aqueous solution; article; controlled study; decomposition; defluorination; energy conservation; energy consumption; high temperature; irradiation; microwave radiation; oxidation; priority journal; reaction time; water temperaturejournal article10.1016/j.watres.2009.09.0552-s2.0-76249083011http://ntur.lib.ntu.edu.tw/bitstream/246246/242752/-1/115.pdf