Photocatalytic oxidation of the textile dye basic red 18 with irradiated titanium dioxide

Ghazi, Ismail; Elamrani, M.; Mansour, M.

doi:10.1080/02772240310001644980

Cited by 8 publications

(5 citation statements)

References 12 publications

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“…This includes biological aerobic (e.g., activated sludge, SBR, biofilter) [8][9][10] or anaerobic (e.g., UASB) [1,11] treatments, enzymatic biodegradation (actinomycetes, fungi) [12], chemical oxidation (H 2 O 2 /Fe 2? (Fenton), e.g., hypochlorite), [13,14] or reduction (e.g., Fe 0 ) [15], electrochemical oxidation (e.g., O 3 /UV, O 3 /H 2 O 2 , O 3 /UV/H 2 O 2 , H 2 O 2 /UV) [16,17], photodegradation (e.g., TiO 2 /UV, photo-Fenton) [18,19], adsorption (e.g., activated carbons, silica, biosorbents) [20,21], membrane separation (e.g., microfiltration, ultrafiltration, nanofiltration) [22], chemical coagulation/flocculation (e.g., aluminum, iron, or calcium salts) [23], and electrolytic treatments, which include electroflocculation [24], and/or electrocoagulation [25][26][27][28], and electro-oxidation [29][30][31].…”

Section: Introductionmentioning

confidence: 99%

In situ active chlorine generation for the treatment of dye-containing effluents

et al. 2009

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This study examined the possibility to remove colour causing-compounds from synthetic effluent by indirect electrochemical oxidation using iridium oxide anode electrodes. Using a high concentration of chloride ions (17.1 mM) and various current densities, it was possible to produce high concentration of active chlorine with a specific production rate of 2.8 mg min -1 A -1 . The best performance for acid methyl violet 2B dye (MV2B) decomposition was obtained using Ti/IrO 2 anodes operated at a current density of 15 mA cm -2 during 40 min of treatment in the presence of 3.42 mM of chloride ions. Under these conditions, more than 99% of MV2B was removed (with a reaction rate apparent constant of 0.20 min -1 ), whereas COD and TOC removal were 51% and 75%, respectively. The electrolytic cell was then used for the degradation of three other synthetic dye solutions: Eosin yellowish (EOY), Trypan Blue (TRB), Acridine Orange (ACO). TRB was the most difficult dye to remove from solution with a value reaction rate constant of 0.12 min -1 , compared to 0.19 min -1 and 0.24 min -1 recorded for ACO and EOY dyes, respectively. More than 99% of these dyes were removed by electrochemical oxidation.

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Section: Introductionmentioning

confidence: 99%

In situ active chlorine generation for the treatment of dye-containing effluents

et al. 2009

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“…Samples were taken at different contact times to determine the time required to reach equilibrium. After centrifugation at 10000 rpm, the absorbance of the supernatant was measured at 484 nm (Ghazi et al, 2003) using a Spekol-1100 UV-Vis spectrophotometer and then converted into concentration. The adsorption equilibrium capacity of BR 18 was calculated using the following relationship:…”

Section: Methodsmentioning

confidence: 99%

Removal of cationic dye (basic red 18) from aqueous solution using natural turkish clay

Fìl¹,

Karakaş²,

Boncukçuoğlu³

2013

Global NEST Journal

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<p>In this study, the removal of a cationic dye, basic red 18, used in the textile industry with montmorillonite was investigated as a function of initial dye concentration, pH, agitation speed, adsorbent dosage, ionic strength, and temperature. Adsorption process was attained to the equilibrium within 30 minutes. The adsorption capacity of basic red 18 increased with increasing ionic strength, initial dye concentration, pH, agitation speed, and temperature, but decreased with increasing adsorbent dosage. The experimental data were analyzed by Langmuir, Freundlich, Temkin, Elovich and Dubinin-Radushkevich isotherms, and it was found that the isotherm data were reasonably correlated by Freundlich isotherm. Pseudo-first order, pseudo-second order, Elovich kinetic equations and intraparticle diffusion model were used to examine the experimental data of different initial conditions. It was found that the pseudo-second order kinetic equation described the data of dye adsorption onto montmorillonite very well. Furthermore, for the removal of basic red 18, a semi-empirical model was established. Thermodynamic analysis was carried out for basic red 18 onto montmorillonite. It was found that the adsorption processes were endothermic in nature. The values of Ea, ΔH*, ΔS* and ΔG* at 293 K for basic red 18 adsorption on clay were calculated as 27.635 kJ mol-1, 25.041kJ mol-1, -0.090 kJ mol-1 K-1 and 51.412 kJ mol-1, respectively. The results indicated that montmorillonite could be employed as an alternative to commercial adsorbents in wastewater treatment for the removal of color and dyes.</p>

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“…In this study, iron electrode material used as an anode produced iron hydroxide (monomeric and polymeric), Fe(OH)n where n = 2 or 3. Two mechanisms were proposed to explain the production of iron hydroxides [6][7][8][9][10]. Ferric ions generated by the electrocoagulation of iron electrode may form monomeric and polymeric iron species depending on the pH of the dye solution.…”

Section: Electrocoagulation Processmentioning

confidence: 99%

Decolorization of Reactive Dye Wastewater by Electrocoagulation

Huang¹,

Zhang²

2012

AMR

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Electrocoagulation is an electrochemical technique for treating polluted effluent, such as dye wastewater. In this paper, Remazol Brilliant Blue R was decolorized by electrocoagulation method used iron electrode. The operating cost was also considered to confirm the optimum operation conditions. High decolorization efficiency (>99%) for Remazol Brilliant Blue R dye solution was obtained with 15mA cm-2 of current density, 10min of electrolysis time, pH 6 and 500mg l-1 dye concentration.

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Photocatalytic oxidation of the textile dye basic red 18 with irradiated titanium dioxide

Cited by 8 publications

References 12 publications

In situ active chlorine generation for the treatment of dye-containing effluents

In situ active chlorine generation for the treatment of dye-containing effluents

Removal of cationic dye (basic red 18) from aqueous solution using natural turkish clay

Decolorization of Reactive Dye Wastewater by Electrocoagulation

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