Photocatalytic decolorization and mineralization of malachite green in an aqueous suspension of titanium(IV) oxide nano-particles under aerated conditions: correlation between some physical properties and their photocatalytic activity

Abstract

Titanium(IV) oxide (TiO 2 ) nano-particles with various physical properties, which had been prepared by hydrothermal crystallization in organic media (HyCOM) and post-calcination, were used for photocatalytic decomposition of malachite green (MG)

Malachite green “a cationic dye” and its removal from aqueous solution by adsorption

“…Many treatment technologies have been applied to decolorize MG from aqueous medium, such as biodegradation and decolorization Levin et al 2004;Ren et al 2006;Eichlerová et al 2006;Daneshvar et al 2007a, b;Ayed et al 2008;Ali et al 2009;Wu et al 2009;Cheriaa and Bakhrouf 2009;Ayed et al 2010;Du et al 2011;Khataee et al 2011a, b;Shedbalkar and Jadhav 2011;Hu et al 2011;Abd-El-Kareem and Taha 2012); photocatalytic degradation (Hasnat et al 2003;Kominami et al 2003;Lv et al 2005;Yang et al 2005;Chen et al 2007;Sayılkan et al 2007aSayılkan et al , b, 2008Tayade et al 2007;Wang et al 2008a;Ju et al 2008;Asiltürk et al 2009;Prado and Costa 2009;Bansal et al 2009;Kaneva et al 2010;Liu et al 2010;Bojinova and Dushkin 2011; Maximum wavelength 618 nm Table 2 Applications and toxicity of Malachite green dye…”

Adsorption studies of hazardous malachite green onto treated ginger waste

“…Many treatment methods have been developed to remove dyes from wastewater, which can be divided into physical, chemical and biological method such as photo-degradation (Nogueira et al, 2005;Wu et al, 1999), photo catalytic degradation (Hachem et al, 2001;Kominami et al, 2003;Sayılkan et al, 2007), biodegradation (Parshetti et al, 2006;Daneshvar et al, 2007) and adsorption (Zhang et al, 2008;Mendez et al, 2007). Adsorption techniques have potential for removing organic and inorganic pollutants from wastewater due to their high efficiency and ability to separate a wide range of compounds (Jain et al, 2007;.…”

Photo-degradation of malachite green in mudfish tissues — investigation of UV-induced photo-degradation

“…MG photo-degradation pathway in dye-aquacultured mudfish Several recent investigations focused on MG photo-degradation only in MG aqueous solution (9,10). To the best of our information, however, there is still no report on the MG photo-degradation mechanism in sample tissue.…”

“…The samples were removed from the UV apparatus for each of the specified time intervals (10,20,30,45, and 60 min) and allowed to cool until they reached room temperature. No juices were observed during the UV irradiation.…”

“…Some promising technologies have been reported to MG degradation (9)(10)(11)(12). Most reports have focused on new photocatalysts, the experimental conditions, and the possibility of environmental applications.…”