Electrocatalytic degradation of bisphenol A in water on a Ti-based PbO2–ionic liquids (ILs) electrode

Ju, Peng; Fan, Hai; Guo, Doudou; Meng, Xiaomeng; Xu, Minrong; Ai, Shiyun

doi:10.1016/j.cej.2011.10.065

Cited by 44 publications

(18 citation statements)

References 41 publications

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“…Thus, the aqueous solution contains a mixture of oxidants, which may oxidize BPA from aqueous solution using graphite electrodes. The effect of current densities on BPA degradation was examined by Ju et al [15] using PbO 2 -ILs(10%)/Ti electrode, under the condition with the supporting electrolyte concentration of 0.05 M and initial BPA concentration of 50 mg L −1 . They observed that the increase of current density, a significant increase of degradation efficiency, and the degradation efficiency of BPA reached approximately 85% within 150 min under the current density of 30 mA cm −2 .…”

Section: Electrochemical Oxidation Processmentioning

confidence: 99%

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Electrochemical treatment of endocrine-disrupting chemical from aqueous solution

Govindaraj

Pattabhi

2013

Desalination and Water Treatment

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Treatment of endocrine-disrupting chemical (EDC) from aqueous solution was studied using electrocoagulation followed by electrochemical oxidation techniques. An aqueous solution of bisphenol-A (BPA) was used as the model contaminant of EDC. The present experimental study has revealed two major treatment techniques such as electrocoagulation followed by electrochemical oxidation processes. These two treatments can be operated independently in batch mode processes. In the first stage, the aqueous BPA solution was subjected to the electrocoagulation under various operating conditions. In electrocoagulation, aluminum (Al) electrode, at the current density of 12 mA cm −2 , 56.12% of chemical oxygen demands (COD) removal was achieved in a relatively short treatment time of 20 min. After completion of electrocoagulation, the sample was then subjected to electrochemical oxidation with different current density. In the electrochemical oxidation, complete COD removal could be achieved at current density of 12 mA cm −2 within 50 min of treatment time. Kinetic analysis indicates that the removal rate might be obeyed as a first order model. The results of UV-vis spectrum showed that at the end of the treatment, BPA compound was completely removed from the aqueous solution. Electrochemically produced sludge was characterized using fourier transform infra red spectroscopy.

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Section: Electrochemical Oxidation Processmentioning

confidence: 99%

“…Therefore, it is important to develop a simple, safe, and effective method for the degradation of BPA. However, there are few studies dealing with electrochemical treatment of aqueous BPA in literature [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical treatment of endocrine-disrupting chemical from aqueous solution

Govindaraj

Pattabhi

2013

Desalination and Water Treatment

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“…At pH 7, it was necessary to increase contact time to longer than 10 min in order to achieve higher than 93.9% removal. On the other hand, a low pH solution will corrode the electrode and inhibit the activity of electrode, even hinder the proceeding of degradation reaction [15]. Yavuz and Kaporal [16] have reported that electrochemical oxidation without initial pH adjustment (initial pH around 7.0) was more effective in removing phenol, compared to pH 3.0 and pH 11.…”

Section: Effect Of Initial Ph On Colour Removalmentioning

confidence: 98%

Decolourization of Rhodamine B from aqueous solution by electrochemical oxidation using graphite electrodes

Rathinam

Govindaraj

Vijayakumar

et al. 2015

Desalination and Water Treatment

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A B S T R A C TThis study investigated the colour removal efficiency of Rhodamine B (RhB) by electrochemical oxidation. The influences of various operating variables such as current density (from 5 to 25 mA/cm 2 ), initial concentration of dye solution (from 50 to 250 mg/L), initial pH of solution (3,5,7,9), the stirrer speed (150-300 rpm) and the concentration of electrolytes (0.025-0.10 M NaCl) on removal efficiency were explored in a batch mode treatment to achieve a higher removal capacity. The results obtained with synthetic wastewater revealed that the most effective removal of dye could be achieved when the pH was kept neutral. The results showed that the colour removal increases with the increase in applied current density, NaCl concentration, while it was found to decrease with the increase in initial dye concentration. The complete (100%) colour removal has been achieved under the optimal experimental conditions such as NaCl concentration of 0.05 M, applied current density of 15 mA/cm 2 , initial pH 7.0, stirrer speed of 200 rpm and electrolysis time of 40 min. The result of UV-vis spectrum analysis confirms the removal of colour from RhB aqueous solution at the short treatment time. In addition, the increase of current intensity, in the range of 0.6-2.0 A, enhanced the treatment rate. The method was found to be highly efficient and relatively fast compared to conventional treatment techniques.

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“…Because of the easy deactivation of pure PbO 2 , the stability and electrocatalytic activity of the PbO 2 anodes are expected to be improved to further satisfy the requirement of practical application [10]. To solve this problem, recent researches have focused on modification of PbO 2 anodes by element doping, such as Bi [11,12], Co [13,14], Fe [15], polytetrafluoroethylene (PTFE) [16], Zr [17], clay [18], ionic liquids [19], Nb [20] and F [21,22]. In addition, rare earth oxides, as powerful oxidants, can easily catalyze organics compounds [23].…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of Ce and PVP co-doped PbO2 electrode for waste water treatment

Jia

Wang

et al. 2015

Journal of the Taiwan Institute of Chemical Engineers

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Electrocatalytic degradation of bisphenol A in water on a Ti-based PbO2–ionic liquids (ILs) electrode

Cited by 44 publications

References 41 publications

Electrochemical treatment of endocrine-disrupting chemical from aqueous solution

Electrochemical treatment of endocrine-disrupting chemical from aqueous solution

Decolourization of Rhodamine B from aqueous solution by electrochemical oxidation using graphite electrodes

Preparation and characterization of Ce and PVP co-doped PbO2 electrode for waste water treatment

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