Southern Illinois University Carbondale
Chunjie Xia is a graduate student in Department of Civil and Environmental Engineering at Southern Illinois University Carbondale (SIUC). His work now focuses on emerging contaminants, especially PFASs and VOCs, removal from wastewater effluents and groundwater using Fe0 nanoparticles. Chunjie earned a bachelor degree in chemical engineering from China University of Mining and Technology, and a doctoral degree in chemical engineering and technology from Beijing University of Chemical Technology.
STUDENT POSTER PRESENTATION
Zero-valent iron nanoparticle (Fe0NP) - induced photocatalysis of perfluorooctanoic acid (PFOA) under ultraviolet light
Degradation of perfluorooctanoic acid (PFOA) is very urgent owing to its global distribution, persistence, and toxicity. In this study, zero-valent iron nanoparticle (Fe0NP) - induced photocatalysis of PFOA under ultraviolet C (UVC) light was studied for the first time. According to the results, PFOA was degraded faster initially (e.g. < 13 h) with Fe0NPs than without Fe0NPs under UVC light. Shorter chain perfluorocarboxylic acids and fluoride ion (F-) were detected as main intermediates. In comparison, PFOA was not degraded under visible light and in the dark. In groundwater and wastewater effluent samples after spiking 1 mg/L PFOA, however, the degradation efficiencies of PFOA using Fe0NPs under UVC were reduced from 57% in deionized water to 28-36% after 24 h, which was attributed to the complex compositions in these water samples.