Gamma radiation-induced degradation of p-nitrophenol (PNP) in the presence of hydrogen peroxide (H2O2) in aqueous solution

Journal of Hazardous Materials
Shaoqing YuJianlong Wang

Abstract

The synergistic effect of gamma radiation with hydrogen peroxide (H(2)O(2)) for p-nitrophenol (PNP) decomposition in aqueous solution was evaluated. The PNP solution with initial concentration of 50mg/L was irradiated in the presence of extra H(2)O(2) at initial concentration of 0, 20, 40, and 80 mg/L. The experimental results showed that the decomposition of PNP conformed to the pseudo-first-order reaction kinetics under the applied conditions. When initial H(2)O(2) concentration was in the range of 0-80 mg/L, higher concentration of H(2)O(2) was more effective for the decomposition, mineralization and nitrogen release of PNP. However, the removal of total organic carbon (TOC) and total nitrogen (TN) was not as effective as that of PNP. Ammonia and nitrate were detected as the main inorganic nitrogen products of PNP decomposition without extra H(2)O(2), whereas nitrate was considered as a final inorganic nitrogen product with extra H(2)O(2) in the initial concentration range of 0-80 mg/L. Major decomposition products, including organic acids were identified by LC/MS and IC. Possible pathways for PNP decomposition by gamma radiation in aqueous solution were proposed.

References

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Citations

Mar 1, 2012·Environmental Science and Pollution Research International·Weihua SunJianlong Wang
Apr 25, 2013·Journal of Hazardous Materials·Hu-Chun TaoNan Xu
Feb 26, 2013·Journal of Hazardous Materials·Yuankun Liu, Jianlong Wang
Dec 29, 2012·Journal of Hazardous Materials·Yanrong ZhangSachio Yoshihara
Sep 14, 2010·Journal of Hazardous Materials·Dongkyu ChoiSeung-Woo Jeong
Mar 1, 2015·Journal of Hazardous Materials·Javed Ali KhanHasan M Khan
Jul 9, 2016·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Germán Cruz-GonzálezUlises J Jáuregui-Haza
Aug 24, 2016·Journal of Environmental Management·Jianlong Wang, Shizong Wang
Oct 4, 2016·Journal of Hazardous Materials·Shizong Wang, Jianlong Wang
Oct 17, 2016·Chemosphere·Shizong WangJianlong Wang
Apr 11, 2017·Environmental Technology·Omar A AlsagerMajid Muneer
Jun 13, 2020·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Lorianne R ShultzTitel Jurca
Sep 23, 2018·Environmental Science and Pollution Research International·Rahil ChangotraLalit Varshney
Jul 25, 2019·Environmental Science and Pollution Research International·Run Zhuan, Jianlong Wang
Dec 29, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Lorianne R ShultzTitel Jurca
May 15, 2021·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Xiaojie FuZhiguo Zhang
Sep 22, 2018·The Science of the Total Environment·Jianlong WangLibing Chu

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