AI Article Synopsis
- The study investigates how effectively 4-chlorophenol (4-CP) can be degraded in water using a solar-powered photo-Fenton process.
- Key factors such as the concentration of iron and hydrogen peroxide, as well as the path length of the solution, were analyzed to optimize degradation efficiency.
- Results indicate that increasing iron concentration enhances removal of organic carbon and chloride, while longer solution paths hinder mineralization; however, the effects of longer paths can be balanced by adjusting iron levels.
Article Abstract
This study reports the photodegradation of 4-chlorophenol (4-CP) in aqueous solution by the photo-Fenton process using solar irradiation. The influence of solution path length, and Fe(NO(3))(3) and H(2)O(2) concentrations on the degradation of 4-CP is evaluated by response surface methodology. The degradation process was monitored by the removal of total organic carbon (TOC) and the release of chloride ion. The results showed a very important role of iron concentration either for TOC removal or dechlorination. On the other hand, a negative effect of increasing solution path length on mineralization was observed, which can be compensated by increasing the iron concentration. This permits an adjustment of the iron concentration according to the irradiation exposure area and path length (depth of a tank reactor). Under optimum conditions of 1.5 mM Fe(NO(3))(3), 20.0 mM H(2)O(2) and 4.5 cm solution path length, 17 min irradiation under solar light were sufficient to reduce a 72 mg CL(-1) solution of 4-CP by 91%.
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| http://dx.doi.org/10.1016/j.jhazmat.2006.04.046 | DOI Listing |
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