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Desalination and Water Treatment Volume 57, 2016 - Issue 60
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Articles

Sulfate radicals from Fe3+/persulfate system for Rhodamine B degradation

Yongsheng LuSchool of Environmental and Chemical Engineering, Shanghai University, No. 99 Shangda Rd., Shanghai, 200444, P.R. China, Tel. +86 21 66137748; Fax: +86 21 66137761, Tel. +86 21 66137745; Fax: +86 21 66137761, Tel./Fax: +86 21 66137758Correspondence[email protected]
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Xingxing YangSchool of Environmental and Chemical Engineering, Shanghai University, No. 99 Shangda Rd., Shanghai, 200444, P.R. China, Tel. +86 21 66137748; Fax: +86 21 66137761, Tel. +86 21 66137745; Fax: +86 21 66137761, Tel./Fax: +86 21 66137758Correspondence[email protected]
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Lu XuSchool of Environmental and Chemical Engineering, Shanghai University, No. 99 Shangda Rd., Shanghai, 200444, P.R. China, Tel. +86 21 66137748; Fax: +86 21 66137761, Tel. +86 21 66137745; Fax: +86 21 66137761, Tel./Fax: +86 21 66137758Correspondence[email protected]
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Zhan WangSchool of Environmental and Chemical Engineering, Shanghai University, No. 99 Shangda Rd., Shanghai, 200444, P.R. China, Tel. +86 21 66137748; Fax: +86 21 66137761, Tel. +86 21 66137745; Fax: +86 21 66137761, Tel./Fax: +86 21 66137758Correspondence[email protected]
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Yunfeng XuSchool of Environmental and Chemical Engineering, Shanghai University, No. 99 Shangda Rd., Shanghai, 200444, P.R. China, Tel. +86 21 66137748; Fax: +86 21 66137761, Tel. +86 21 66137745; Fax: +86 21 66137761, Tel./Fax: +86 21 66137758Correspondence[email protected]
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Guangren QianSchool of Environmental and Chemical Engineering, Shanghai University, No. 99 Shangda Rd., Shanghai, 200444, P.R. China, Tel. +86 21 66137748; Fax: +86 21 66137761, Tel. +86 21 66137745; Fax: +86 21 66137761, Tel./Fax: +86 21 66137758Correspondence[email protected]
Pages 29411-29420 | Received 25 Nov 2015, Accepted 26 Jan 2016, Published online: 01 Mar 2016
 
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Abstract

The Fe3+/persulfate system for Rhodamine B (RhB) oxidative degradation has been investigated. The catalytic mechanism in the Fe3+/persulfate system was proposed as follows: Fe3+ was restored to Fe2+ by the generated intermediate products during the degradation process. The influence parameters were examined in batch experiments, including Fe3+ and persulfate concentration and initial pH. The results indicated that the Fe3+/persulfate system exhibited good performance for RhB degradation and followed first-order kinetics. 95.91% of the RhB was removed within 30 min under the following conditions: [Fe3+]0 = 1 mM, [persulfate]0 = 1 mM and pH 3.0. The RhB degradation efficiencies increased as the Fe3+ and persulfate concentrations increased. In addition, the RhB degradation was inhibited in the presence of inorganic anions, which was primarily due to a complex reaction between Fe3+ and various anions except for .

Acknowledgments

The authors appreciate technical support from the Instrumental Analysis & Research Center of Shanghai University. This study was financially supported by the National Nature Science Foundation of China (Nos. 41472312/D0218, 21107067/B070303) and the Innovative Research Team in University (No. IRT13078).

Notes

Presented at the 8th International Conference on Challenges in Environmental Science & Engineering (CESE-2015) 28 September–2 October 2015, Sydney, Australia

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