Sulfate radicals from Fe<sup>3+</sup>/persulfate system for Rhodamine B degradation


<p>The Fe<sup>3+</sup>/persulfate system for Rhodamine B (RhB) oxidative degradation has been investigated. The catalytic mechanism in the Fe<sup>3+</sup>/persulfate system was proposed as follows: Fe<sup>3+</sup> was restored to Fe<sup>2+</sup> by the generated intermediate products during the degradation process. The influence parameters were examined in batch experiments, including Fe<sup>3+</sup> and persulfate concentration and initial pH. The results indicated that the Fe<sup>3+</sup>/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: [Fe<sup>3+</sup>]<sub>0</sub> = 1 mM, [persulfate]<sub>0</sub> = 1 mM and pH 3.0. The RhB degradation efficiencies increased as the Fe<sup>3+</sup> 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 Fe<sup>3+</sup> and various anions except for .</p

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oai:figshare.com:article/3079537Last time updated on 2/12/2018

This paper was published in FigShare.

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