Various factors affecting photodecomposition of methylene blue by iron-oxides in an oxalate solution

Gulshan, Fahmida; Yanagida, Sayaka; Kameshima, Yoshikazu; Isobe, Toshihiro; Nakajima, Akira; Okada, Kiyoshi

doi:10.1016/j.watres.2010.01.040

Cited by 73 publications

(28 citation statements)

References 29 publications

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“…Radical-radical reaction must also be taken into account (Konstantinou and Albanis 2004 An investigation on the decomposition of methylene blue by iron oxides at various concentrations of oxalate solutions showed that much higher concentration of hydroxyl radicals was generated by iron oxides compared with those from a commercial TiO 2 (ST-01), as determined by the coumarin method. It was also found that the photodecomposition rate increased with increasing the generation of OH Á radicals (Gulshan et al 2010). …”

Section: Effect Of Oxidizing Agentmentioning

confidence: 98%

Parameters affecting the photocatalytic degradation of dyes using TiO2: a review

2015

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Traditional chemical, physical and biological processes for treating wastewater containing textile dye have such disadvantages as high cost, high energy requirement and generation of secondary pollution during treatment process. The advanced oxidation processes technology has been attracting growing attention for the decomposition of organic dyes. Such processes are based on the light-enhanced generation of highly reactive hydroxyl radicals, which oxidize the organic matter in solution and convert it completely into water, CO 2 and inorganic compounds. In this presentation, the photocatalytic degradation of dyes in aqueous solution using TiO 2 as photocatalyst under solar and UV irradiation has been reviewed. It is observed that the degradation of dyes depends on several parameters such as pH, catalyst concentration, substrate concentration and the presence of oxidants. Reaction temperature and the intensity of light also affect the degradation of dyes. Particle size, BETsurface area and different mineral forms of TiO 2 also have influence on the degradation rate.

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Section: Effect Of Oxidizing Agentmentioning

confidence: 98%

Parameters affecting the photocatalytic degradation of dyes using TiO2: a review

2015

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“…Many treatment methods, including adsorption,[4À6] chemical coagulation, [7] membrane separation, [8] photo-catalytic degradation, [9,10] and biological treatment [11] have been developed for the removal of dyes from aquatic environment. Among these methods, adsorption was proved to be an effective method due to its low cost, high efficiency, and simple operation.…”

Section: Introductionmentioning

confidence: 99%

Removal of methylene blue from water by cellulose/graphene oxide fibres

Chen

et al. 2016

Journal of Experimental Nanoscience

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A novel and efficient cellulose/graphene oxide (CGO) fibre adsorbent was prepared by wet-spinning technique. The morphology and physicochemical properties of the CGO fibres were characterised by scanning electron microscope (SEM), Fourier transform infrared spectrometer, and thermo-gravimetric analysis. The equilibrium adsorption data were well fitted to the Langmuir models, and the adsorption capacity calculated from the Langmuir model reached 480.77 mg/g at 318 K. The adsorption kinetic studies revealed that pseudo-second-order model best describes the adsorption kinetic data. The thermodynamic parameters indicated that the adsorption was an endothermic and spontaneous process. Furthermore, the CGO fibre, which is very stable and easily separable, can be recycled with a dilute NaOH solution wash, retaining over 93% of the adsorption capacity after recycling three times.

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“…Chemical treatment processes (ozonation and chlorination) are more effective 7,8 . The photocatalytic degradation over solid support is an interesting recent proposition [9][10][11] . M. Bielska et al and S. Wang et al studied the removal of methylene blue using micellar enhanced ultrafiltration, fly ash and red mud and coal respectively [12][13][14][15] .…”

Section: Introductionmentioning

confidence: 99%

Removal of Methylene Blue from Waste Water Using Activated Carbon Prepared from Rice Husk

Rahman

Amin

Alam

2012

Dhaka Univ. J. Sci.

118

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The possible utilization of rice husk activated carbon as an adsorbent for the removal of methylene blue dye from aqueous solutions has been investigated. In this study, activated carbons, prepared from low -cost rice husk by sulfuric acid and zinc chloride activation, were used as the adsorbent for the removal of methylene blue, a basic dye, from aqueous solutions. Effects of various experimental parameters, such as adsorbent dosage and particle size, initial dye concentration, pH and flow rate were investigated in column process. The maximum uptakes of methylene blue by activated rice husk carbon at optimized conditions (particle sizes: 140 µm; Flow rate: 1.4 mL/min; pH: 10.0; initial volume of methylene blue: 50 mL and initial concentration of methylene blue: 4.0 mg/L etc.) were found to 97.15%. The results indicate that activated carbon of rice husk could be employed as low-cost alternatives to commercial activated carbon in waste water treatment for the removal of basic dyes. This low cost and effective removal method may provide a promising solution for the removal of crystal violet dye from wastewater.

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Various factors affecting photodecomposition of methylene blue by iron-oxides in an oxalate solution

Cited by 73 publications

References 29 publications

Parameters affecting the photocatalytic degradation of dyes using TiO2: a review

Parameters affecting the photocatalytic degradation of dyes using TiO2: a review

Removal of methylene blue from water by cellulose/graphene oxide fibres

Removal of Methylene Blue from Waste Water Using Activated Carbon Prepared from Rice Husk

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