Preparation of heterogeneous bio-Fenton catalyst for decolorization of Malachite Green

Elhami, Vahide; Karimi, Afzal; Aghbolaghy, Mostafa

doi:10.1016/j.jtice.2015.05.006

Cited by 26 publications

(3 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…During last few decades, water researchers have introduced several methods for removing pollutants from water [6][7][8]. Among various physical [8], chemical [9], biological [10], and electrochemical [11] techniques, Fenton-like removal [12,13] has been considered very effective due to the high range of applicability and superior degradation ability [14]. However, homogeneous Fenton process containing free iron ions and hydrogen peroxide has some critical disadvantages that limit its commercial application: the need of acid pH and further neutralization and separation of iron sludge in the end, is a costly and time consuming procedure [15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Stabilization of zero valent iron (Fe0) on plasma/dendrimer functionalized polyester fabrics for Fenton-like removal of hazardous water pollutants

Morshed

Bouazizi

Behary

et al. 2019

Chemical Engineering Journal

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Stabilization of zero valent iron (Fe0) on plasma/dendrimer functionalized polyester fabrics for Fenton-like removal of hazardous water pollutants

Morshed

Bouazizi

Behary

et al. 2019

Chemical Engineering Journal

View full text Add to dashboard Cite

“…About 1–20% of total annually produced synthetic dyes are released into the effluents of the textile, paper, pharmaceutical, food, and plastic industries [1,2]. This causes considerable environmental pollution via production of hazardous byproducts through hydrolysis, oxidation and other chemical reactions [1,3,4]. Synthetic dyes such as malachite green oxalate (MG) and crystal violet (CV) are mostly non-biodegradable.…”

Section: Introductionmentioning

confidence: 99%

Modification of Immobilized Titanium Dioxide Nanostructures by Argon Plasma for Photocatalytic Removal of Organic Dyes

et al. 2019

Self Cite

View full text Add to dashboard Cite

The aim of this study was to modify surface properties of immobilized rutile TiO2 using Argon cold plasma treatment and to evaluate the performance of the catalyst in photocatalytic elimination of synthetic dyes in UV/TiO2/H2O2 process. The surface-modified TiO2 was characterized by XRD, EDX, SEM, UV-DRS and XPS analyses. Response surface methodology was adopted to achieve high catalyst efficiency by evaluating the effect of two main independent cold plasma treatment parameters (exposure time and pressure) on surface modification of the catalyst. The increase of the plasma operation pressure led to higher decolorization percentage, while the increase of plasma exposure time decreased the decolorization efficiency. RSM methodology predicted optimum plasma treatment conditions to be 0.78 Torr and 21 min of exposure time, which resulted in decolorization of 10 mg/L solution of the malachite green solution by 94.94% in 30 min. The plasma treatment decreased the oxygen to titanium ratio and caused oxygen vacancy on the surface of the catalyst, resulting in the superior performance of the plasma-treated catalyst. Pseudo first-order kinetic rate constant for the plasma-treated catalyst was 4.28 and 2.03 times higher than the rate constant for the non-treated photocatalyst in decolorization of aqueous solutions of malachite green and crystal violet, respectively.

show abstract

“…It causes some damaging effect to ecology and its contact by human skin leashes to irritation, pain and redness. Henceforth, removal of MGO dye from textile wastewaters become ecologically vital (Elhami et al, 2015). Additionally, this report was focused on finding decolorization efficiency of MGO dye using different types of homogeneous and heterogenous types of AOPs.…”

Section: Introductionmentioning

confidence: 99%

Oxidative decolorization of a malachite green oxalate dye through the Photochemical Advanced Oxidation Processes

Ghime¹,

Goru²,

Ojha³

et al. 2019

Global NEST: The International Journal

View full text Add to dashboard Cite

<p>This report was aimed at an investigation of efficiency for Photochemical Advanced Oxidation Processes (UV photolysis, UV/H2O2, UV/TiO2, UV/H2O2/TiO2 and UV/H2O2/Fe2+ processes) to decolorize Malachite Green Oxalate (MGO) dye. Experimental runs were performed using laboratory scale photochemical reactor. About 98% decolorization was obtained with initial 100 ppm MGO dye in Photo-Fenton process under optimal conditions (60 ppm Fe2+ concentration, 12 mM of oxidant concentration, at pH 3.0 for 60 min). 97% decolorization was obtained using UV/H2O2/TiO2 process having [TiO2]o of 0.6 gm/L for similar reaction conditions. The percentage decolorization of MGO was in range of 94-95% for both UV/TiO2 and UV/H2O2 processes. Concentration of ferrous salt (60 ppm) was considered as an optimal value to carry out the UV/H2O2/Fe2+ process for MGO decolorization. Influence of oxidant (H2O2) and Fe2+ ions for oxidation of MGO was studied in Photo-Fenton process. Sulphate radical based AOPs was proved to be more effective in treating MGO dye with irradiation. Results indicate that decolorization efficiency by Photochemical AOPs for MGO dye in photochemical reactor were more efficient. Pseudo-first-order model of kinetics was noticed to be the best model fit to explain the decolorization of MGO dye solution.</p>

show abstract

Preparation of heterogeneous bio-Fenton catalyst for decolorization of Malachite Green

Cited by 26 publications

References 33 publications

Stabilization of zero valent iron (Fe0) on plasma/dendrimer functionalized polyester fabrics for Fenton-like removal of hazardous water pollutants

Stabilization of zero valent iron (Fe0) on plasma/dendrimer functionalized polyester fabrics for Fenton-like removal of hazardous water pollutants

Modification of Immobilized Titanium Dioxide Nanostructures by Argon Plasma for Photocatalytic Removal of Organic Dyes

Oxidative decolorization of a malachite green oxalate dye through the Photochemical Advanced Oxidation Processes

Contact Info

Product

Resources

About