scholarly journals Photocatalytic removal of Malachite green dye from aqueous solutions by nano-composites containing titanium dioxide: A systematic review

2021 ◽  
Vol 8 (4) ◽  
pp. 295-302
Author(s):  
Soheila Amiri-Hosseini ◽  
Yalda Hashempour
Keyword(s):  
Aqueous Solutions ◽  
Malachite Green ◽  
Dye Removal ◽  
Web Of Science ◽  
Uv Light ◽  
Photocatalytic Decomposition ◽  
Photocatalytic Process ◽  
Malachite Green Dye ◽  
Photocatalytic Removal ◽  
Aquaculture Industry

Background: Malachite green (MG) is widely used as a fungicide, Bactericide parasiticide in the aquaculture industry, as a food additive, medical disinfectant, and also, as a dye for materials such as silk, leather, paper, etc. In this study, the photocatalytic removal of MG from aqueous solutions using TiO2-containing nanocomposites was reviewed. Methods: In this study, four databases (PubMed, Web of Science, ScienceDirect, and Scopus) were systematically searched to collect studies on the decomposition of MG using nanocomposites containing TiO2 under UV light radiation. Results: In total, 10 related and eligible studies were selected. Based on the results, TiO2 was doped with iron, Sn, Ag, Si, and Ni. The highest percentage of photocatalytic decomposition for MG was observed in Sn > Ni > Ag > Fe > Si. The removal efficiency of MG in the studied papers was between 75%-100%. Conclusion: Recombinant nanocomposites had a higher dye removal percentage than uncombined ones because they play an important role in the photocatalytic process of dye, by producing free radicals.

scholarly journals Synthesis of a biodegradable interpenetrating polymer network of Av-cl-poly(AA-ipn-AAm) for malachite green dye removal: kinetics and thermodynamic studies

RSC Advances ◽  
2018 ◽  
Vol 8 (73) ◽  
pp. 41920-41937 ◽  
Author(s):  
Vaneet Kumar ◽  
Vishal Rehani ◽  
Balbir Singh Kaith ◽  
Saruchi Saruchi
Keyword(s):  
Acrylic Acid ◽  
Malachite Green ◽  
Dye Removal ◽  
Polymer Network ◽  
Aloe Vera ◽  
Interpenetrating Polymer Network ◽  
Thermodynamic Studies ◽  
Malachite Green Dye ◽  
Natural Polysaccharide ◽  
Kinetics And Thermodynamic

This paper deals with the synthesis of a biodegradable interpenetrating polymer network (IPN) from the natural polysaccharide aloe vera (Av), acrylamide (AAm) and acrylic acid (AA), and its evaluation as a dye removal device.

scholarly journals Photocatalytic Properties of Microwave-Synthesized TiO2 and ZnO Nanoparticles Using Malachite Green Dye

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
A. K. Singh ◽  
Umesh T. Nakate
Keyword(s):  
Malachite Green ◽  
Zno Nanoparticles ◽  
Uv Light ◽  
Hexagonal Wurtzite Structure ◽  
Stoichiometric Ratio ◽  
X Ray Diffraction ◽  
Zno Nps ◽  
Malachite Green Dye ◽  
Photodegradation Rate ◽  
Scherrer Formula

TiO2 and ZnO nanoparticles (NPs) were synthesized using microwave-assisted method. Synthesized NPs were characterized for their structure, morphology, and elemental composition using X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS). The crystallite size of synthesized NPs of TiO2 and ZnO was about 12.3 and 18.7 nm as obtained from the Scherrer formula from the most intense XRD peak. The synthesized NPs have been found to be in stoichiometric ratio having anatase and hexagonal wurtzite structure for TiO2 and ZnO, respectively, and are spherical in shape. Surface area of TiO2 and ZnO NPs was found to be about 43.52 m2/g and 7.7 m2/g. Photocatalytic (PC) properties of synthesized NPs were studied for malachite green (MG) dye under UV light. TiO2 NPs were found to be highly photocatalytically active among the two, having efficiency and apparent photodegradation rate of 49.35% and , respectively.

scholarly journals Kinetic Behavior of the Adsorption of Malachite Green Using Jordanian Diatomite as Adsorbent

2020 ◽  
Vol 3 (1) ◽  
pp. 1-10
Author(s):  
Emad El Qada
Keyword(s):  
Malachite Green ◽  
Dye Removal ◽  
Considerable Effect ◽  
Intraparticle Diffusion ◽  
Adsorption Rate ◽  
External Mass Transfer ◽  
Experimental Conditions ◽  
Malachite Green Dye ◽  
Series Of Experiments ◽  
Rate Controlling Step

The main intention of this work is to study the adsorption rate and mechanism for the adsorption of Malachite Green dye (MG) onto Jordanian diatomite. A series of experiments were conducted under a variety of conditions such as the mass of diatomite, initial MG concentration, and pH of the solution. The mechanism of adsorption was elucidated based on different kinetic models. Experimental conditions showed a considerable effect on the adsorption rate. Alkali conditions promote MG uptake and increase the rate of adsorption. Approximately 99% of dye removal was achieved as the diatomite dosage increased from 0.25g to 1.5g. The adsorption rate-controlling step was found to be a combination of chemisorption and intraparticle diffusion, with the external mass transfer predominating in the first five minutes of the experiment.

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