Adsorption of Malachite Green from Aqueous Solution using Hen Feathers -Application of Different Mathematical Models to Continuous Biosorption Service Unavailable

Proper remediation of aquatic environments contaminated by toxic organic dyes has become a major research focus for environmental and chemical engineers in recent years. The focus of this study was to evaluate the adsorption of malachite green from an aqueous solution in a continuous fixed-bed column system. Waste materials like hen feathers, a biosorbent was proven to remove the water-soluble malachite green dye from wastewater. This study evaluates the adsorption potential of malachite green dye ions in a continuous flow adsorption column. The performance of the hen feathers was evaluated in the fixed bed column at various operating conditions such as bed height (۶-۱۰cm), flow rate (۴-۱۲ml/min), and initial concentration (۱۰-۳۰ mg/l). The bed height (۸cm), flowrate(۱۲ ml/min), and highest inlet concentration (۲۰mg/l) resulted in the highest malachite green uptake of ۲.۸۲۹mg/g compared to other experimental conditions. The column experimental data obtained at different conditions were analyzed using three different models viz., Bohart-Adams model, Yoon-Nelsons model, BDST model, which provided a good breakthrough curve prediction. However, the results obtained from the Yoon-nelson model and BDST model were more satisfactory. The various characteristics of the hen feathers were studied using FTIR studies. The activated hen feather powder was a successful potential bio sorbent for the malachite green from the aqueous phase.Proper remediation of aquatic environments contaminated by toxic organic dyes has become a major research focus for environmental and chemical engineers in recent years. The focus of this study was to evaluate the adsorption of malachite green from an aqueous solution in a continuous fixed-bed column system. Waste materials like hen feathers, a biosorbent was proven to remove the water-soluble malachite green dye from wastewater. This study evaluates the adsorption potential of malachite green dye ions in a continuous flow adsorption column. The performance of the hen feathers was evaluated in the fixed bed column at various operating conditions such as bed height (۶-۱۰cm), flow rate (۴-۱۲ml/min), and initial concentration (۱۰-۳۰ mg/l). The bed height (۸cm), flowrate(۱۲ ml/min), and highest inlet concentration (۲۰mg/l) resulted in the highest malachite green uptake of ۲.۸۲۹mg/g compared to other experimental conditions. The column experimental data obtained at different conditions were analyzed using three different models viz., Bohart-Adams model, Yoon-Nelsons model, BDST model, which provided a good breakthrough curve prediction. However, the results obtained from the Yoon-nelson model and BDST model were more satisfactory. The various characteristics of the hen feathers were studied using FTIR studies. The activated hen feather powder was a successful potential bio sorbent for the malachite green from the aqueous phase.

Keywords:

pH , Adsorption , Hen feathers , Dye , Breakthrough curve , Fixed bed column