Equilibrium and kinetic studies on the removal of Acid Red 114 from aqueous solutions using activated carbons prepared from seed shells

Comparison of Acid Red 114 Dye Adsorption by Fe3O4and Fe3O4Impregnated Rice Husk Ash

“…Physical and chemical features of Acid Red 114 are given in Table 1. The chemical structure of the dye AR114 is shown in Figure 1 [20]. 200 mg/L of stock solution was prepared to be used in adsorption applications.…”

“…Adsorption studies were carried out at various initial concentrations (20,40,60,80, and 100 mg/L) and different pH conditions (without pH correction and pH values 2, 4, 6, and 10). Sampling intervals were set as 0, 1, 5, 10, 15, 30, 45, 60, 90, and 150 minutes.…”

“…Batch processes were used under different test parameters: pH (2, 4, 6, and 10) and without pH, initial dye concentration (20,40, 60, 80, and 100 mg/L), and contact time (0, 1, 5, 10, 15, 30, 45, 60, 90, and 150 min). Optimum conditions for AR114 removal were found to be at natural pH (pH without correction) for both adsorbents.…”

Fotocatálisis/Adsorción para la Eliminación de Carbono Orgánico Total presente en Vapor Condensado de Cocción generado en el Tratamiento de Subproductos Avícolas

“…Una opción tecnológica para el tratamiento de efluentes, es la combinación de dos o más técnicas con el fin de aumentar la eficiencia de remoción en los procesos de descontaminación. Recientemente, se han probado procesos avanzados de oxidación (Crini, 2006;Malato, 2004) para la remoción de carga contaminante presente en efluentes de la industria textil (colorantes) (Thinakaran, 2008;Gupta, 2004), compuestos orgánicos (Djilani et al, 2012;Delfin et al, 2009;López et al, 2016), productos farmacéuticos (Zhang et al, 2012) y metales pesados (Delfin et al, 2009;Sayed et al, 2005), en combinación con tratamientos primarios tales como la adsorción (Wei et al, 2008;Ho y McKay, 1999) en la que predomina el uso del carbón activado (Moreno et al, 2006;Moreno y Giraldo, 2008). El objetivo de acoplar estas técnicas ha sido aprovechar el efecto sinérgico de ambos tratamientos con el fin de mejorar la remoción de carga contaminante (Kumar y Bansal, 2010;Metiver et al, 2003) aunque en ocasiones, no se alcancen resultados satisfactorios (Shon et al, 2005;Kebir et al, 2011).…”

Comparison of adsorption behaviour of coconut coir activated carbon and commercial activated carbon for textile dye

“…In recent years, plant-based material such as silk cotton hull, coconut tree sawdust, banana pith, maize cob and sago waste [5] corncob wastes [8], coir pith [9], sawdust [10], rice husk [11], bagasse [12,13], peach stone [14], seed shell [15] and sunflower seed hull [16] have been used as sources in the production of activated carbon for the treatment of textile dye waste. Coconut coir is an agricultural solid waste.…”