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

Abstract

Adsorption can be efficiently employed for the removal of various toxic dyes from water and wastewater. In this article, the authors reviewed variety of adsorbents used by various researchers for the removal of malachite green (MG) dye from an aqueous environment. The main motto of this review article was to assemble the scattered available information of adsorbents used for the removal of MG to enlighten their wide potential. In addition to this, various optimal experimental conditions (solution pH, equilibrium contact time, amount of adsorbent and temperature) as well as adsorption isotherms, kinetics and thermodynamics data of different adsorbents towards MG were also analyzed and tabulated. Finally, it was concluded that the agricultural solid wastes and biosorbents such as biopolymers and biomass adsorbents have demonstrated outstanding adsorption capabilities for removal of MG dye.

Canna indica-chitin-alginate composite beads for the treatment of textile dye effluent containing Rose Bengal dye

“…Coagulation, chemical flocculation, filtration by activated carbon and membrane filters are some of the effective but toxic and expensive physio-chemical methods applied for effluent treatment (Rajasulochana and Preethy, 2016). Alternatively, adsorption is the most versatile and widely used technology which uses chemical adsorbents like alumina, silica, metal hydroxides and activated carbon (Raval et al, 2017); however they are not much preferred in recent times due to their production cost, toxic nature, low regeneration capacity and other properties. Chitin is a polysaccharide that occurs naturally in large quantity.…”

Reduction of COD of Textile Industry Waste Water by Using Acoustic Cavitation Coupled with Advanced Oxidation Processes

“…In general, wastewaters generated by the textile industries are characterized with the presence of low biodegradable organic dyes, which are not suitable for conventional biological wastewater treatment technologies. Conventional biological methods have limitations to treat the high level of COD [5][6][7]. Advanced oxidation processes (AOP) were found to be more efficient for the treatment of elevated levels of COD [7][8].Advanced oxidation processes (AOP) such as Acoustic cavitation, Fenton and Photo Fenton process are useful for the treatment of high initial concentration of COD [9].…”

“…Conventional biological methods have limitations to treat the high level of COD [5][6][7]. Advanced oxidation processes (AOP) were found to be more efficient for the treatment of elevated levels of COD [7][8].Advanced oxidation processes (AOP) such as Acoustic cavitation, Fenton and Photo Fenton process are useful for the treatment of high initial concentration of COD [9]. The sonochemical effect is cavitational phenomena based on ultrasound interaction with aqueous liquid medium, when ultrasound passed through the liquid medium cycles of compression and rarefaction are developed.…”

Decolorization of brilliant green dye using immersed lamp sonophotocatalytic reactor

“…These is a major threat to ecology and aquatic biota (Gole and Gogate 2014;Sood et al 2015). Conventional biological methods have limitations to treat the high level of COD (Khuntia et al 2015;Dong et al 2015;Raval et al 2016). Advanced oxidation processes were found to be more efficient for the treatment of elevated levels of COD (Shambharkar and Chowdhury 2016).…”

“…This dye is commonly used for various applications, typically in paper industries (Ertugay and Acar 2014;Kumar et al 2015;Anju et al 2012). BG is highly toxic and recalcitrant compound and it poses a danger to human and aquatic biota due to mutagenic and carcinogenic effects (Sood et al 2015;Khuntia et al 2015;Shambharkar and Chowdhury 2016;Raval et al 2016). Degradation of BG dye using photocatalysis (distributed lamp position) and sonocatalysis has been well studied and reported in the literature.…”