Heterogeneous fenton-like catalytic degradation of 2,4-dichlorophenoxyacetic acid in water with FeS

Chen, Hai; Zhang, Zhonglei; Yang, Zhilin; Yang, Qi; Li, Bo; Bai, Zhiyong

doi:10.1016/j.cej.2015.03.079

Cited by 228 publications

(51 citation statements)

References 56 publications

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“…Solution pH was adjusted varying from 3 to 11 and tested by a pH meter (Orion star A211, The concentration of 2,4-D was determined by high performance liquid chromatogram (Waters 1525) equipped with an UV detector (Waters 2487) using a C 18 column (4.6 × 150 mm, 5 m) as stationary phase [7]. To assess reproducibility, each experiment was tested in duplicate.…”

Section: Batch Adsorption Experimentsmentioning

confidence: 99%

“…In this context, several technologies such as biological degradation [6], advance oxidation [7] and adsorption [8,9] have been developed to treat the wastewater contaminated by 2,4-D. Among these methods, adsorption was frequently used because of its unique advantageous, such as low cost, simplicity in operation and fewer harmful secondary products [10].…”

Section: Introductionmentioning

confidence: 99%

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Adsorption of 2,4-D on magnetic graphene and mechanism study

Liu

Yang

et al. 2016

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Section: Batch Adsorption Experimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Adsorption of 2,4-D on magnetic graphene and mechanism study

Liu

Yang

et al. 2016

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“…The results also show that decolorization efficiency has a slight fluctuation when the dosage of catalyst is increased from 5 g to 10 g, indicating that the increased catalyst dosage has little effect, and the amount of H 2 O 2 is the limiting factor. In addition, excessive AC/Fe could react with hydroxide radicals (Equation ) produced by the Fenton reaction, resulting in decreased concentration of •OH available for the decolorization of Sunset Yellow . Therefore, the optimal dosage of the catalyst was selected as 5 g in this study.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of a Fe/AC Fenton‐like catalyst and heterogeneous catalysis in decolorization of Sunset Yellow by pulsed high‐voltage discharge

Zhu

Liu

et al. 2017

J of Chemical Tech & Biotech

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BACKGROUND A new Fe/AC heterogeneous Fenton‐like catalyst was prepared using a dipping–sintering method. The prepared catalyst was characterized by X‐ray diffraction and scanning electron microscopy. The decolorization of Sunset Yellow was conducted in a self‐designed pulsed high‐voltage discharge system by the catalysis of the prepared heterogeneous catalyst. Effects of preparation conditions of catalyst (carrier material, sintering temperature and dipping time) and operating conditions (catalyst dosage, pH and treatment method) on decolorization efficiency were investigated. RESULTS Spherical activated carbon (AC) was selected as the carrier material and the optimal dipping time and sintering temperature were 8 h and 350 °C, respectively. The efficiency of decolorization of Sunset Yellow was above 90% after 30 min of a pulsed high‐voltage discharge process with 5 g heterogeneous catalyst and at pH 2.00. The utilization of copper mesh not only enhanced the decolorization of Sunset Yellow but also facilitated the reusability of the prepared heterogeneous catalyst. The efficiency of decolorization of Sunset Yellow with prepared Fe/AC heterogeneous Fenton‐like catalyst (5 g) was even a little higher than that with homogeneous catalyst (1.635 mmol L−1 Fe2+). The decolorization efficiency remained above 90% after ten recycles of the catalyst, indicating that the prepared heterogeneous catalyst has good stability and reusability. In addition, a possible catalytic mechanism for the decolorization reaction in a pulsed high‐voltage discharge system with prepared Fe/AC heterogeneous Fenton‐like catalyst was proposed by determination of H2O2 and ·OH concentrations in deionized water. CONCLUSIONS The prepared Fe/AC heterogeneous Fenton‐like catalyst efficiently degrades Sunset Yellow wastewater in a pulsed high‐voltage discharge system. © 2016 Society of Chemical Industry

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“…It is well known that pH is an important factors for catalyst surface properties in aqueous solution [30]. Therefore, it is necessary to examine the influence of pH on catalytic oxidation.…”

Section: Effect Of Phmentioning

confidence: 99%