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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Guo, Weilin Lin, Xin Wang, Anqi Yan, Liangguo Hao, Feifei Leng, Yanqiu Yue, Xinxin |
| Description | Country affiliation: China Author Affiliation: Hao F ( University of Jinan, Jinan, China.) |
| Abstract | Increasing attention has been paid to pyrite due to its ability to generate hydroxyl radicals in air-saturated solutions. In this study, the mineral pyrite was studied as a catalyst to activate molecular oxygen to degrade Acid Orange 7 (AO7) in aqueous solution. A complete set of control experiments were conducted to optimize the reaction conditions, including the dosage of pyrite, the AO7 concentration, as well as the initial pH value. The role of reactive oxygen species (ROS) generated by pyrite in the process was elucidated by free radical quenching reactions. Furthermore, the concentrations of Fe(II) and total Fe formed were also measured. The mechanism for the production of ROS in the $pyrite/H_{2}O/O_{2}$ system was that $H_{2}O_{2}$ was formed by hydrogen ion and superoxide anion $(O_{2}^{·−})$ which was produced by the reaction of pyrite activating $O_{2}$ and then reacted with Fe(II) dissolved from pyrite to produce $^{·}OH$ through Fenton reaction. The findings suggest that $pyrite/H_{2}O/O_{2}$ system is potentially practical in pollution treatment. Moreover, the results provide a new insight into the understanding of the mechanism for degradation of organic pollutants by pyrite. |
| ISSN | 09441344 |
| Issue Number | 10 |
| Volume Number | 21 |
| e-ISSN | 16147499 |
| Journal | Environmental Science and Pollution Research |
| Language | English |
| Publisher | Springer |
| Publisher Date | 2014-05-01 |
| Publisher Place | Germany |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Azo Compounds Chemistry Benzenesulfonates Hydrogen Peroxide Hydroxyl Radical Iron Sulfides Water Pollutants, Chemical Models, Chemical Oxygen Reactive Oxygen Species Superoxides Journal Article Research Support, Non-u.s. Gov't Discipline Environmental Science Discipline Environmental Chemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Environmental Chemistry Health, Toxicology and Mutagenesis Pollution Medicine |
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