TY - JOUR
T1 - From disposal problem to valuable product
T2 - the route of sewage sludge as an adsorbent for congo red removal
AU - Aoulad El Hadj Ali, Youssef
AU - N’diaye, Abdoulaye Demba
AU - Benahdach, Kaouthar
AU - Ahrouch, Mohammadi
AU - Ait Lahcen, Abdellatif
AU - Silanpaa, Mika
AU - Stitou, Mostafa
N1 - Publisher Copyright:
© The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2023.
PY - 2024/7
Y1 - 2024/7
N2 - The present work is an attempt to address the feasibility of sewage sludge as a cost-effective adsorbent for the Congo Red (CR) elimination from a wastewater sample. The physicochemical properties of treated sewage sludge SS40 were identified by using several techniques, such as Thermo-gravimetric analysis (TGA), scanning electron microscopy (SEM), zeta potential, and Fourier transform infrared spectroscopy (FTIR), Furthermore, to describe the adsorption balance, the experimental results were analyzed using the Langmuir, Freundlich, and Sips isotherms. The equilibrium was perfectly described by the Langmuir model, and the peak adsorption capacity in the monolayer was 25.10 mg. g−1 at 40 °C. The kinetic data of adsorption were analyzed by the Pseudo-First Order (PFO), Pseudo-Second Order (PSO), and Elovich models. The results indicated that both Elovich and PSO models were the most appropriate for describing the adsorption of CR onto (SS40) for all initial CR concentrations, indicating that the chemisorption controlled the dye retention by SS40. The determination of thermodynamic parameters showed that ΔG0 was − 9.42 kJ.mol−1 at 40 °C, ΔH0 was 10.64 kJ.mol−1, and ΔS0 was 30.14 J.mol−1. K−1. The adsorption of CR on SS40 was found to be feasible, spontaneous, and endothermic. The results of this study demonstrate that sewage sludge from the domestic wastewater treatment plant can be used advantageously as an economical, easy-to-handle, and eco-friendly sorbent for the elimination of CR as an emerging pollutant from aqueous solutions.
AB - The present work is an attempt to address the feasibility of sewage sludge as a cost-effective adsorbent for the Congo Red (CR) elimination from a wastewater sample. The physicochemical properties of treated sewage sludge SS40 were identified by using several techniques, such as Thermo-gravimetric analysis (TGA), scanning electron microscopy (SEM), zeta potential, and Fourier transform infrared spectroscopy (FTIR), Furthermore, to describe the adsorption balance, the experimental results were analyzed using the Langmuir, Freundlich, and Sips isotherms. The equilibrium was perfectly described by the Langmuir model, and the peak adsorption capacity in the monolayer was 25.10 mg. g−1 at 40 °C. The kinetic data of adsorption were analyzed by the Pseudo-First Order (PFO), Pseudo-Second Order (PSO), and Elovich models. The results indicated that both Elovich and PSO models were the most appropriate for describing the adsorption of CR onto (SS40) for all initial CR concentrations, indicating that the chemisorption controlled the dye retention by SS40. The determination of thermodynamic parameters showed that ΔG0 was − 9.42 kJ.mol−1 at 40 °C, ΔH0 was 10.64 kJ.mol−1, and ΔS0 was 30.14 J.mol−1. K−1. The adsorption of CR on SS40 was found to be feasible, spontaneous, and endothermic. The results of this study demonstrate that sewage sludge from the domestic wastewater treatment plant can be used advantageously as an economical, easy-to-handle, and eco-friendly sorbent for the elimination of CR as an emerging pollutant from aqueous solutions.
KW - Adsorption
KW - Aqueous solution
KW - Congo red
KW - Pollutants
KW - Sewage sludge
UR - http://www.scopus.com/inward/record.url?scp=85146219830&partnerID=8YFLogxK
U2 - 10.1007/s13399-023-03748-2
DO - 10.1007/s13399-023-03748-2
M3 - Article
AN - SCOPUS:85146219830
SN - 2190-6815
VL - 14
SP - 16035
EP - 16048
JO - Biomass Conversion and Biorefinery
JF - Biomass Conversion and Biorefinery
IS - 14
ER -
