Removal of crystal violet by advanced oxidation and microfiltration

Jana, Somen; Purkait, Mihir Kumar; Mohanty, Kaustubha

doi:10.1016/j.clay.2010.08.023

Cited by 50 publications

(23 citation statements)

References 26 publications

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“…(7) and (8) helps the scavenging effect of H 2 O 2 to become dominant, as well. Similar results were reported in literature by Jana et al [1], by Zhang et al [15], and by Alshamsi et al [9] in the oxidation of CV using several advanced oxidation techniques.…”

Section: The Influence Of H 2 O 2 Concentration On the Degradation Of CVsupporting

confidence: 91%

“…When the results obtained in this study were compared with other Fenton reaction studies in literature for CV, it was seen that almost complete color removal was achieved in the degradation of CV at 298 K for an initial dye concentration of 100 mg/dm 3 in the presence of 1,000 mg/dm 3 H 2 O 2 and 100 mg/dm 3 FeSO 4 .7H 2 O after an oxidation time of 90 min by homogeneous Fenton reaction followed by microfiltration [1].…”

Section: Effect Of Temperature On Catalytic Activitymentioning

confidence: 52%

“…(2015) [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] www.deswater.com doi: 10.1080/19443994.2015.1044915 technologies are insufficient for the decolorization of textile wastewater and the color remains due to the nonbiodegradable nature of the chromophoric groups. Physical treatment technologies, such as coagulation/ flocculation, adsorption (mainly on activated carbon), and membrane processes, can result in successful removal of color from the effluent, however, the disadvantage of these methods is the existence of another form of waste for example solid waste such as spent carbon or sludge [2,3].…”

Section: Desalination and Water Treatmentmentioning

confidence: 99%

“…Up to now, degradation of crystal violet (CV) was studied using several advanced oxidation processes (AOPs) such as: heterogeneous oxidation with H 2 O 2 over copper(II) amine complexes supported on Amberlyst-15 [6], photocatalytic degradation in the presence of Ag + doped TiO 2 or nanostructured TiO 2 ultrafine powder or silver doped TiO 2 catalysts, homogeneous, and heterogeneous Fenton reaction, in the presence of bulk CdS, nano-CdS, nano-CdS/zeolite A, and CdO/zeolite and P25-TiO 2 catalyst [1,4,[7][8][9][10][11][12][13], electrochemical oxidation using a boron-doped diamond or Ti/RuO 2 -IrO 2 anode [14,15], electrocoagulation using iron or aluminum electrodes [16], wet peroxide oxidation in the presence of FeGAC/H 2 O 2 [17], degradation with a magnetic CuFe 2 O 4 aqueous solution coupled with microwave radiation [18], and a photocatalytic-biological system combination [19]. In addition, mineralization or chemical oxygen demand (COD) removal data have been reported in a few studies for CV degradation.…”

Section: Desalination and Water Treatmentmentioning

confidence: 99%

“…Colored wastewater streams could pose serious detrimental effects to the environment and thus to human health. Hence, these effluents must be treated or decolorized prior to discharge [1].…”

Section: Introductionmentioning

confidence: 99%

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Heterogeneous Fenton-like oxidation of crystal violet using an iron loaded ZSM-5 zeolite

Ünnü

Gündüz

Dükkancı

2015

Desalination and Water Treatment

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A B S T R A C TThe heterogeneous Fenton-like oxidation of a cationic triphenylmethane dye, crystal violet (CV), dissolved in water was investigated using an iron-loaded ZSM-5 zeolite catalyst. The catalyst was characterized by powder X-ray diffraction patterns, Fourier Transform infrared spectroscopy (FTIR), scanning electron microscope, analysis, and nitrogen adsorption-Brunauer-Emmet-Teller (N 2 -BET) studies. The effects of temperature, solution pH, H 2 O 2 amount, catalyst amount, and initial dye concentration were investigated using the heterogeneous Fenton-like oxidation of an aqueous CV. The increase in the concentration of H 2 O 2 from 3 to 7.5 mM enhanced the decolorization. Whereas increasing the H 2 O 2 amount from 7.5 to 10 mM led to a decrease in the color removal from 94.1 to 85.5%. An acidic pH of 3.5 was favorable for the decolorization of the dye. The decolorization of the dye decreased with the increase in the initial concentration of CV. Doubling the amount of the catalyst enhanced the decolorization from 94.1 to 99.6% while the chemical oxygen demand (COD) removal changed from 50 to 58.8%. The increase in temperature positively affected the decolorization and the COD reduction of the dye. The stability of the catalyst was maintained even after using the catalyst for three cycles, and a small iron leaching was also proof of the stability of the catalyst. The initial color removal rate of the CV was described as −r CV , o = 7.3 e −14.7/RT C CV,o 0.7 C H2O2;0 where R = 8.314 J/mol K and C CV,o and C H2O2;0 were in mol/dm 3 .

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Section: The Influence Of H 2 O 2 Concentration On the Degradation Of CVsupporting

confidence: 91%

Section: Effect Of Temperature On Catalytic Activitymentioning

confidence: 52%

Section: Desalination and Water Treatmentmentioning

confidence: 99%

Section: Desalination and Water Treatmentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Heterogeneous Fenton-like oxidation of crystal violet using an iron loaded ZSM-5 zeolite

Ünnü

Gündüz

Dükkancı

2015

Desalination and Water Treatment

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Treatment of Crystal Violet from Synthetic Solution Using Membranes Doped with Natural Fruit Extract

Căprărescu

Miron

Purcar

et al. 2018

CLEAN Soil Air Water

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Innovative polymer membranes with and without natural fruit extract (rosehip) are characterized in terms of their ability of treating a solution containing Crystal violet by a three‐compartment laboratory scale electro‐dialysis cell. Electro‐dialysis is performed at different time intervals and using a constant voltage of 15 V. The dye removal percentage (%) and energy consumption are calculated. The highest value of dye removal is obtained for 90 min (>96%) for membranes doped with natural fruit extract. Water uptake is also determined for the prepared membranes. The physical and chemical properties of the final membranes are investigated by Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), and thermal gravimetric analysis‐differential scanning calorimetry (TGA‐DSC). FTIR spectra indicated no significant modifications of membrane structure due to the small amount of natural fruit extract. The surface morphology shows that the prepared membranes doped with natural fruit extract is more dense and compact. TGA results shows that the prepared membranes are stable up to 330 °C.

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Monitoring the quality consistency of Weibizhi tablets by micellar electrokinetic chromatography fingerprints combined with multivariate statistical analyses, the simple quantified ratio fingerprint method, and the fingerprint-efficacy relationship

et al. 2015

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Micellar electrokinetic chromatography fingerprinting combined with quantification was successfully developed and applied to monitor the quality consistency of Weibizhi tablets, which is a classical compound preparation used to treat gastric ulcers. A background electrolyte composed of 57 mmol/L sodium borate, 21 mmol/L sodium dodecylsulfate and 100 mmol/L sodium hydroxide was used to separate compounds. To optimize capillary electrophoresis conditions, multivariate statistical analyses were applied. First, the most important factors influencing sample electrophoretic behavior were identified as background electrolyte concentrations. Then, a Box-Benhnken design response surface strategy using resolution index RF as an integrated response was set up to correlate factors with response. RF reflects the effective signal amount, resolution, and signal homogenization in an electropherogram, thus, it was regarded as an excellent indicator. In fingerprint assessments, simple quantified ratio fingerprint method was established for comprehensive quality discrimination of traditional Chinese medicines/herbal medicines from qualitative and quantitative perspectives, by which the quality of 27 samples from the same manufacturer were well differentiated. In addition, the fingerprint-efficacy relationship between fingerprints and antioxidant activities was established using partial least squares regression, which provided important medicinal efficacy information for quality control. The present study offered an efficient means for monitoring Weibizhi tablet quality consistency.

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Removal of crystal violet by advanced oxidation and microfiltration

Cited by 50 publications

References 26 publications

Heterogeneous Fenton-like oxidation of crystal violet using an iron loaded ZSM-5 zeolite

Heterogeneous Fenton-like oxidation of crystal violet using an iron loaded ZSM-5 zeolite

Treatment of Crystal Violet from Synthetic Solution Using Membranes Doped with Natural Fruit Extract

Monitoring the quality consistency of Weibizhi tablets by micellar electrokinetic chromatography fingerprints combined with multivariate statistical analyses, the simple quantified ratio fingerprint method, and the fingerprint-efficacy relationship

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