TY - JOUR
T1 - Chicken feathers derived materials for the removal of chromium from aqueous solutions: kinetics, isotherms, thermodynamics and regeneration studies
AU - Chakraborty, Rupa
AU - Asthana, Anupama
AU - Singh, Ajaya Kumar
AU - Verma, Renu
AU - Sankarasubramanian, Sreevidya
AU - Yadav, Sushma
AU - Carabineiro, Sónia A. C.
AU - Susan, Md Abu Bin Hasan
N1 - This work has been supported by Fundacao para a Ciencia e a Tecnologia, Portugal (2020-2023 multiannual funding to Centro de Quimica Estrutural and Project UIDB/00100/2020).
This work was also partially supported by the Associate Laboratory for Green Chemistry (LAQV), financed by national funds from FCT/MCTES (UIDB/50006/2020 and CEECINST/00102/2018) (Portugal).
PY - 2022
Y1 - 2022
N2 - In the present study, chicken feathers (CFs), obtained from animal waste, were used as bio-adsorbent for the removal of hazardous Cr(VI) ions from aqueous solutions. Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), energy-dispersive x-ray spectroscopy (EDX), x-ray diffraction (XRD), adsorption of N2 at −196 °C, thermogravimetric analysis (TGA), and point of zero charge (pHpzc) determination were used to characterize the adsorbent. The N2 adsorption results revealed high surface area and microporous structure for the adsorbent. The experimental results in batch adsorption show that optimum conditions are: pH 2.5, equilibrium contact time 180 minutes, concentration of CFs 11 g L−1, and initial Cr(VI) concentration 25 mg L−1. The experimental data on Cr(VI) adsorption were fitted using the Langmuir and Freundlich equations at different temperatures. The Langmuir adsorption model showed the best fit. The maximum monolayer capacity (q max) of CFs was found to be 333.33 mg/g. The kinetic results of Cr(VI) ion were fitted to four kinetic models: pseudo-first-order, pseudo-second-order, intra-particle diffusion, and Elovich. The pseudo-second-order chemisorption model had a higher coefficient. The thermodynamics data showed that the adsorption process of Cr(VI) on CFs was endothermic and spontaneous. The desorption efficiency and reusability of CFs were determined for three adsorption–desorption cycles, which proved to be very effective for the removal of Cr(VI) ions from aqueous solutions.
AB - In the present study, chicken feathers (CFs), obtained from animal waste, were used as bio-adsorbent for the removal of hazardous Cr(VI) ions from aqueous solutions. Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), energy-dispersive x-ray spectroscopy (EDX), x-ray diffraction (XRD), adsorption of N2 at −196 °C, thermogravimetric analysis (TGA), and point of zero charge (pHpzc) determination were used to characterize the adsorbent. The N2 adsorption results revealed high surface area and microporous structure for the adsorbent. The experimental results in batch adsorption show that optimum conditions are: pH 2.5, equilibrium contact time 180 minutes, concentration of CFs 11 g L−1, and initial Cr(VI) concentration 25 mg L−1. The experimental data on Cr(VI) adsorption were fitted using the Langmuir and Freundlich equations at different temperatures. The Langmuir adsorption model showed the best fit. The maximum monolayer capacity (q max) of CFs was found to be 333.33 mg/g. The kinetic results of Cr(VI) ion were fitted to four kinetic models: pseudo-first-order, pseudo-second-order, intra-particle diffusion, and Elovich. The pseudo-second-order chemisorption model had a higher coefficient. The thermodynamics data showed that the adsorption process of Cr(VI) on CFs was endothermic and spontaneous. The desorption efficiency and reusability of CFs were determined for three adsorption–desorption cycles, which proved to be very effective for the removal of Cr(VI) ions from aqueous solutions.
KW - adsorption isotherm
KW - chicken feathers
KW - Chromium(VI)
KW - kinetics
KW - thermodynamics
UR - http://www.scopus.com/inward/record.url?scp=85096139596&partnerID=8YFLogxK
U2 - 10.1080/01932691.2020.1842760
DO - 10.1080/01932691.2020.1842760
M3 - Article
AN - SCOPUS:85096139596
SN - 0193-2691
VL - 43
JO - Journal of Dispersion Science and Technology
JF - Journal of Dispersion Science and Technology
IS - 3
ER -