Removal of congo red using activated carbon and its regeneration.

By M. Purkait, Abhijit Maiti, S. Dasgupta, S. De. Journal of Hazardous Materials, 2007

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Adsorption characteristics of brilliant green dye on kaolin. (2009, background): “Similar observations have een reported in the literature [8].”
Synthesis and Characterisation of Novel-Activated Carbon from Waste Biomass Pine Cone and Its Application in the Removal of Congo Red Dye from Aqueous Solution by Adsorption (2013, background): “A similar behaviour is observed for CR dye adsorption on commercial AC (Kaur et al. 2013; Purkait et al. 2007).”
Kinetic study and equilibrium isotherm analysis of Congo Red adsorption by clay materials (2009, background): “[3] M.”
Congo Red adsorption by ball-milled sugarcane bagasse (2011, background): “Decreasing CR adsorption with increasing solution pH has also been observed for jute stick powder [12], also a lignocellulosic material, and other adsorbents such as activated carbon [7], Ca-bentonite [19], perlite [17], rice husk ash [20], kaolin and zeolite [2].”
Adsorption of dyes using different types of clay: a review (2017, background): “2001) and its effectiveness and versatility (Chen et al. 2011; Purkait et al. 2007).”
Magnetic Field Application and its Potential in Water and Wastewater Treatment Systems (2014, background): “Conventional technologies that are applied to separate the organic dyes are adsorption by activated carbon (127), orange peel (128), saw-dust (129), and rice bran (130), coagulation-flocculation (131), chemical oxidation (132), ozonation (133), and nanofiltration (134).”