Anodic oxidation of Reactive Black 5 dye using boron doped diamond anodes in a bipolar trickle tower reactor

Yavuz, Yusuf; Shahbazi, Reza

doi:10.1016/j.seppur.2011.10.001

Cited by 62 publications

(37 citation statements)

References 41 publications

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“…For example, Yavuz and Shahbazi [36] obtained only 29% mineralization following the electro-oxidation of RB5 using BDD anodes in a bipolar trickle tower reactor. It is possible to attain higher mineralization values for dyes by increasing the current density or time in electrolysis or by adding NaCl to the electrolyte in order to promote the formation of organochlorine compounds [51, 52].…”

Section: [Figure 7 Near Here]mentioning

confidence: 99%

“…Yavuz and Shahbazi [36] observed the delaminations of the BDD/Nb electrodes in the form of Raschig rings after the electro-oxidation of RB5 (100 mg L -1 in 0.02 mol L -1 Na2SO4) dye when current densities between 0,5 and 1,125 mA cm -2 were applied.…”

Section: Anode Stabilitymentioning

confidence: 99%

“…(100 mg L -1 in 0.02 mol L -1 Na2SO4) in a bipolar trickle tower reactor (recirculated batch mode at 100 mL min -1 flow rate) with BDD/Nb electrodes in the form of Raschig rings afforded 97% color removal, 29.3% mineralization and a reduction in initial toxicity [36].…”

Section: Introductionmentioning

confidence: 99%

“…For example, Iglesias et al [22] investigated the removal of RB5 by the electro-Fenton process using a BDD anode and graphite sheet cathode and reported that 97.2% of color was removed after 90 min of electrolysis at 5 V applied potential. Additionally, electro-oxidation of RB5(100 mg L -1 in 0.02 mol L -1 Na2SO4) in a bipolar trickle tower reactor (recirculated batch mode at 100 mL min -1 flow rate) with BDD/Nb electrodes in the form of Raschig rings afforded 97% color removal, 29.3% mineralization and a reduction in initial toxicity [36].Further studies are still required in order to elucidate completely the influence of electrochemical techniques on water matrices and degradation products. One important issue concerns the degradation pathways of organic pollutants, with particular emphasis on the identification of degradation intermediates or byproducts, to ensure that the treated wastewater is safe for discharge into the environment [37].…”

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confidence: 99%

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Electrochemical removal of Reactive Black 5 azo dye using non-commercial boron-doped diamond film anodes

Vasconcelos

Ribeiro

Migliorini

et al. 2015

Electrochimica Acta

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Section: [Figure 7 Near Here]mentioning

confidence: 99%

Section: Anode Stabilitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Electrochemical removal of Reactive Black 5 azo dye using non-commercial boron-doped diamond film anodes

Vasconcelos

Ribeiro

Migliorini

et al. 2015

Electrochimica Acta

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“…The two azo groups which act as chromophores enable the dyes to absorb light in the visible spectrum and are also responsible for the corresponding colours. These reactive groups are covalently bonded to -OH or -NH 2 groups that are present in the materials to give excellent wash fastness property [10,11,12]. Several analytical methods for the analysis of azo dyes and their intermediates in various samples have been developed and most of the methods are based on the electrophoresis, chromatographic and spectroscopic method [13,14].…”

Section: Introductionmentioning

confidence: 99%

Voltammetric Determination of Reactive Black 5 (Rb5) in Waste Water Samples From the Batik Industry

Yaacob¹

2016

MJAS

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A cyclic voltammetry (CV) and differential pulse cathodic stripping voltammetry (DPCSV) studies of RB5 in Britton-Robinson buffer (BRB) at a hanging mercury dropping electrode (HMDE) are described. CV was carried out by cathodic and anodic potential scan over the range of +200 mV to -800 mV with no accumulation time and three well-defined pH-dependent cathodic peaks were observed. The effects of different scan rates, pH of BRB, repetitive cycle and increasing concentrations on the peak height and peak potential of the analyte were studied. The results showed that RB5 dye was adsorbed and irreversibly reduced at the mercury electrode, mainly under diffusion controlled in the optimum pH 4.0 of BRB. By using DPCSV, pH of BRB and various instrumental parameters such as scan rate, accumulation time, accumulation potential and pulse amplitude that may affect the peak height of RB5 were investigated and optimized for RB5 determination. Under the optimized parameters, the peak height was found to be linear with RB5 concentration in the range from 2.5 x 10 -7 mol L -1 to 2.0 x 10 -6 mol L -1 . A detection limit (3SD/m) of 1.3 x 10 -8 mol L -1 was achieved. The precision of the developed method in terms of RSD was 0.55% for intra-day measurement and 0.55%, 0.24% and 0.40%, for inter-day measurements, respectively. The developed method was successfully applied in the determination of RB5 in batik wastewaters with the mean recovery of 83.97 ± 4.78% to 97.93 ± 5.45% (0.5 x 10 -6 mol L -1 ), 95.91 ± 2.68% to 103.49 ± 1.32% (1.0 x 10 -6 mol L -1 ) and 99.17 ± 0.75% to 105.12 ± 0.28% (2.0 x 10 -6 mol L -1 ). The developed method is considered sensitive, precise, accurate, rugged, robust, fast and low cost for routine analysis of RB5 dye in batik wastewaters over the UV-VIS spectrometry method.Keywords: Reactive Black 5, differential pulse cathodic stripping, Britton-Robinson buffer, hanging mercury dropping electrode, batik wastewater samples Abstrak Kajian voltammetri berkitar (CV) dan voltammetri perlucutan denyut kebezaan (DPCSV) terhadap pewarna RB5 dalam larutan penimbal Britton-Robinson (BRB) menggunakan elektrod jatuhan raksa tergantung (HMDE) dihuraikan. CV dijalankan dengan mengimbas potential kathodik dan anodik dari +200 mV ke -800 mV tanpa masa pengumpulan dan tiga puncak diperhatikan selepas imbasan. Kesan perbezaan kadar imbasan, pH BRB, imbasan berkitar yang berulang dan peningkatan kepekatan RB5 ke atas ketinggian dan nilai keupayaan puncak dikaji. RB5 yang dijerap dan diturunkan secara tidak berbalik pada permukaan elektrod merkuri adalah dibawah kawalan difusi pada pH BRB yang optimum iaitu 4.0. Dengan menggunakan DPCSV, pH BRB dan parameter-parameter peralatan yang memberi kesan kepada ketinggian puncak seperti kadar imbasan, masa pengumpulan, keupayaan pengumpulan dan amplitud denyut telah dioptimumkan untuk analisis RB5. Ketinggian puncak berkadar terus dengan kepekatan RB5 dalam julat dari 2.5 x 10 -7 mol L -1 hingga 2.0 x 10 -6 mol L -1 . Had pengesanan adalah 1.3 x 10 -8 mol L -1 . Ketepatan (RSD...

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Toward the Quantitative Evaluation of an Activated Carbon Particle Electrode Performance in a Packed‐Bed System

et al. 2017

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Determination of electrode area and effective current is an important, also an outstanding issue, for reaction progression kinetics analysis of an electrochemical system, especially for a packed‐bed electrode usually used in fuel cell processes, the oxygen reduction reaction, hydrogen electro‐generation, and the oxidation of organics. Herein, we report a novel strategy for the quantitative evaluation of oxidative performance towards a three‐dimensional framework, using cyclic voltammetry and electrochemical impedance spectroscopy analyses to obtain the electrode area expansion factor (λ) and fractional current applied on an activated carbon particle electrode (β). The two variables acquired through electrochemical tests were extremely approximate to those from simulating experimental data in phenol, helianthin B, and oxalic acid oxidation. These results not only provide an assessment tool for particle electrode performances, but also lead to efficient design, control, and operation of a reaction, thus having implications in improving kinetics within the electrochemistry field.

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Anodic oxidation of Reactive Black 5 dye using boron doped diamond anodes in a bipolar trickle tower reactor

Cited by 62 publications

References 41 publications

Electrochemical removal of Reactive Black 5 azo dye using non-commercial boron-doped diamond film anodes

Electrochemical removal of Reactive Black 5 azo dye using non-commercial boron-doped diamond film anodes

Voltammetric Determination of Reactive Black 5 (Rb5) in Waste Water Samples From the Batik Industry

Toward the Quantitative Evaluation of an Activated Carbon Particle Electrode Performance in a Packed‐Bed System

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