Electrochemical treatment of synthetic wastewaters containing Alphazurine A dye

Bensalah, Nasr; Alfaro, Marco Antonio Quiroz; Martínez‐Huitle, Carlos A.

doi:10.1016/j.cej.2008.11.031

Cited by 163 publications

(67 citation statements)

References 36 publications

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“…BDD anode (synthesized as described on [21]) was supplied by Adamant Technologies (Neuchatel, Switzerland). BDD was used as the anode, and titanium as the cathode.…”

Section: Electrooxidation Experimentsmentioning

confidence: 99%

“…These authors have reported that after 4 h of electrolysis at 30 mA cm −2 , all solutions were completely decolorized and mineralized. On the other hand, Bensalah et al [21] have studied the treatment of wastewaters containing Alphazurine A by anodic oxidation using BDD anodes. The authors reported that the energy required for removing 95% of initial chemical oxygen demand (COD) depends mainly on the applied current density, temperature and agitation rate.…”

Section: Introductionmentioning

confidence: 99%

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Electrochemical Degradation of Remazol Red BR and Novacron Blue C-D Dyes Using Diamond Electrode

et al. 2011

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In this paper, the treatment of dye solutions containing Remazol Red BR (RRB) and Novacron Blue C-D (NB) by anodic oxidation using boron-doped diamond (BDD) anodes has been investigated. Galvanostatic electrolyses of RRB and NB solutions have led to the complete decolourisation and chemical oxygen demand (COD) removal at different operating conditions (current density, pH and temperature). Energy requirements for removing colour during galvanostatic electrolyses of RRB and NB synthetic solutions depend mainly on operating conditions; for example for RRB, it passes from 3.30 kWh m −3 at 20 mA cm −2 to 4.28 kWh m −3 at 60 mA cm −2 (pH=1); 17.25 kWh m −3 at 20 mA cm −2 to 28.87 kWh m −3 at 60 mA cm −2 (pH=4.5); 13.50 kWh m −3 at 20 mA cm −2 to 37.80 kWh m −3 at 60 mA cm −2 (pH=8). Additionally, colour and COD removal rates were favoured when an increase on the temperature was attained, decreasing the energy consumption requirements. According to the experimental results obtained, the electrochemical oxidation process is suitable for depuration wastewaters containing these textile dyes, due to the electrocatalytic properties of BDD anode.

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“…BDD anode (synthesized as described on [21]) was supplied by Adamant Technologies (Neuchatel, Switzerland). BDD was used as the anode, and titanium as the cathode.…”

Section: Electrooxidation Experimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electrochemical Degradation of Remazol Red BR and Novacron Blue C-D Dyes Using Diamond Electrode

et al. 2011

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“…From several decades various methods have been evolved in wastewater treatment such as electrochemical treatment methods [12][13][14], oxidation [15], and ozonation [16]. However, the adsorption process has been proven as a most effective and reliable method for dye removal.…”

Section: Introductionmentioning

confidence: 99%

Adsorptive removal of hazardous anionic dye “Congo red” from wastewater using waste materials and recovery by desorption

Mittal

Malviya

et al. 2009

Journal of Colloid and Interface Science

662

210

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a b s t r a c tThe present investigation assesses the applicability of waste materials-bottom ash and deoiled soya-for the removal of the colorant Congo red from wastewaters. The adsorption characteristics and dye removal efficiency of adsorbents have been determined by investigating factors such as effect of pH, effect of concentration of the dye, amount of adsorbents, contact time, and temperature. Langmuir, Freundlich, Tempkin, and Dubinin-Radushkevich isotherm models have been used to evaluate the ongoing adsorption. With the help of adsorption isotherm data different thermodynamic parameters such as free energy; enthalpy, and entropy have been calculated. The estimated free energy has been obtained as À21.52 kJ mol À1 for bottom ash and À16.88 kJ mol À1 for deoiled soya. On the basis of pseudo-first-order and pseudo-second-order kinetic equations different kinetic parameters have been obtained. Column operations depicted good adsorptive tendencies for Congo red with 96.95% and 97.14% saturation of dye on bottom ash and deoiled soya, respectively. Regeneration of the saturated columns has been made by eluting NaOH solution and more than 90% dye has been recovered in both cases.

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“…Their results that higher mass transport increase the treatment rate is in agreement with our results. A higher degradation efficiency with improved mixing conditions has been obtained for other singlecomponent aqueous solutions [19,20].…”

Section: Effects Of Applied Current and Stirring Rate On The Antibiotmentioning

confidence: 97%

Antibiotic removal from waste milk by electrochemical process: degradation characteristics in concentrated organic solution

Kitazono

Ihara

Toyoda

et al. 2016

J Mater Cycles Waste Manag

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The use of antibiotics in lactating dairy cows produces waste milk containing antibiotic residues. Antibiotics have been one of the emerging pollutants in the environment. Waste milk is a concentrated wastewater because it contains organic matter at high concentrations. The objective was to clarify the removal characteristics of chlortetracycline and cefazolin contained in waste milk using the electrochemical oxidation by a comparative study with in aqueous solution. This paper discussed partial and preferential oxidation of the antibiotic dissolved in milk to reduce the energy consumption during the treatment. The preferential degradation of antibiotic as a target compound on the basis of pseudo-first-order reaction kinetics led the charge saving treatment. The results indicated that the electrochemical oxidation can effectively treat the low levels of the antibiotic residues even in concentrated wastewater not only in usual dilute solutions.

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Electrochemical treatment of synthetic wastewaters containing Alphazurine A dye

Cited by 163 publications

References 36 publications

Electrochemical Degradation of Remazol Red BR and Novacron Blue C-D Dyes Using Diamond Electrode

Electrochemical Degradation of Remazol Red BR and Novacron Blue C-D Dyes Using Diamond Electrode

Adsorptive removal of hazardous anionic dye “Congo red” from wastewater using waste materials and recovery by desorption

Antibiotic removal from waste milk by electrochemical process: degradation characteristics in concentrated organic solution

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