Effects of fulvic acid concentration and origin on photodegradation of polycyclic aromatic hydrocarbons in aqueous solution: importance of active oxygen

Environmental Pollution
Xinghui XiaGordon H Huang

Abstract

With an Xe arc lamp house as simulated sunlight, the influences of fulvic acid (FA) concentration and origins on photodegradation of acenaphthene, fluorine, phenanthrene, fluoranthene and pyrene in aqueous solution have been studied. Similar effects of FAs, collected from five places around China, on polycyclic aromatic hydrocarbon (PAH) photodegradation have been observed. Active oxygen was of significance in PAH photodegradation with the presence of FAs. For systems with 1.25 mg L(-1) FAs, the contributions of 8*OH to PAH photodegradation rates were from 33% to 69%. FAs had two opposite effects, i.e., stimulating the generation of active oxygen and advancing PAH photodegradation; competing with PAHs for energy and photons and restraining PAH photodegradation. Generally, photodegradation rates of the 5 PAHs decreased with the increase of FAs concentration; except fluoranthene and pyrene were advanced in solutions with low FA concentration. The influences of FA concentration on PAH photodegradation were more significant than FA origin.

References

Jan 1, 1996·Journal of Photochemistry and Photobiology. B, Biology·J M AllenS F Allen
Feb 24, 2001·Journal of Environmental Quality·I K KonstantinouT A Albanis
Mar 22, 2001·Water Research·J S Miller, D Olejnik
Oct 22, 2002·Environmental Science & Technology·Matthew P Fasnacht, Neil V Blough
Jan 14, 2004·Environmental Science & Technology·Matthew P Fasnacht, Neil V Blough
Apr 15, 2004·The Science of the Total Environment·Z L ZhangG Yu
Feb 25, 2006·Science·Douglas E Latch, Kristopher McNeill
Apr 15, 2007·Journal of Photochemistry and Photobiology. A, Chemistry·Hilla Shemer, Karl G Linden

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Citations

Jul 18, 2012·Environmental Science and Pollution Research International·Rui LuHan-Qing Yu
Jul 26, 2011·Journal of Hazardous Materials·S SanchesV J Pereira
Apr 24, 2015·Environmental Science and Pollution Research International·Jing ShangAidong Ruan
Feb 7, 2015·Journal of Hazardous Materials·Yanyan GongDongye Zhao
Jun 28, 2016·Environmental Science and Pollution Research International·Bizhang Dong, Jiye Hu
Mar 20, 2018·Journal of Environmental Sciences (China)·Haotian WangXinyue Xiong
May 25, 2021·Journal of Environmental Management·A Rosińska
Nov 20, 2013·Environmental Science & Technology·J F LealE B H Santos

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