TY - JOUR
T1 - Adsorption of anionic dyes from aqueous solution using polyelectrolyte pdapdadmac-modified-montmorillonite clay
AU - Akbour, Rachid Ait
AU - El Gaayda, Jamila
AU - Titchou, Fatima Ezzahra
AU - Khenifi, Aïcha
AU - Afanga, Hanane
AU - Farahi, Abdelfettah
AU - Yap, Pow Seng
AU - Forte, Marcus Bruno Soares
AU - Hamdani, Mohamed
N1 - Publisher Copyright:
© 2020 Desalination Publications. All rights reserved.
PY - 2020/12
Y1 - 2020/12
N2 - A novel polyelectrolyte poly diallyl-dimethyl-ammonium chloride (PDADMAC)-modified-montmorillonite was evaluated as low-cost adsorbent material to eliminate anionic dyes, namely congo red (CR) and methyl orange (MO), from the aqueous phases via batch adsorption experiments. The PDADMAC-modified-montmorillonite samples were characterized using X-ray diffraction, Fourier transform infrared, scanning electron microscopy, surface area measurement (Brunauer– Emmett–Teller method), zeta potential, and thermogravimetric analysis techniques. The sorption of anionic dyes on PDADMAC-modified-montmorillonite was studied. The experimental results demonstrated that the adsorption of anionic dye differs when varying pH and temperature val-ues. In the presence of interfering anions (SO4 2– 2– 2–, CO3, and HPO4), a decrease in the CR and MO adsorbed amounts were observed. These results highlight the pertinence of PDADMAC-modified-montmorillonite adsorbent for the removal of organic dyes from water contaminated. For both two anionic dyes, the investigations of sorption kinetics and isotherm model indicated that the adsorption kinetic was described better by the pseudo-first-order model, and the equilibrium data obtained were well-described by the Langmuir model. The removal efficiency of PDADMAC-modified-montmorillonite were beyond 90.7% and 69.2% of CR and MO dyes, respectively, showing that the PDADMAC-modified-montmorillonite can be utilized as an efficient adsorbent for anionic dye removal. The calculated thermodynamic parameters showed the spontaneous sorption of CR and MO on PDADMAC-modified-montmorillonite, and also its endothermic character.
AB - A novel polyelectrolyte poly diallyl-dimethyl-ammonium chloride (PDADMAC)-modified-montmorillonite was evaluated as low-cost adsorbent material to eliminate anionic dyes, namely congo red (CR) and methyl orange (MO), from the aqueous phases via batch adsorption experiments. The PDADMAC-modified-montmorillonite samples were characterized using X-ray diffraction, Fourier transform infrared, scanning electron microscopy, surface area measurement (Brunauer– Emmett–Teller method), zeta potential, and thermogravimetric analysis techniques. The sorption of anionic dyes on PDADMAC-modified-montmorillonite was studied. The experimental results demonstrated that the adsorption of anionic dye differs when varying pH and temperature val-ues. In the presence of interfering anions (SO4 2– 2– 2–, CO3, and HPO4), a decrease in the CR and MO adsorbed amounts were observed. These results highlight the pertinence of PDADMAC-modified-montmorillonite adsorbent for the removal of organic dyes from water contaminated. For both two anionic dyes, the investigations of sorption kinetics and isotherm model indicated that the adsorption kinetic was described better by the pseudo-first-order model, and the equilibrium data obtained were well-described by the Langmuir model. The removal efficiency of PDADMAC-modified-montmorillonite were beyond 90.7% and 69.2% of CR and MO dyes, respectively, showing that the PDADMAC-modified-montmorillonite can be utilized as an efficient adsorbent for anionic dye removal. The calculated thermodynamic parameters showed the spontaneous sorption of CR and MO on PDADMAC-modified-montmorillonite, and also its endothermic character.
KW - Adsorption
KW - Clay
KW - Dyes
KW - Montmorillonite
KW - Surfactant
UR - http://www.scopus.com/inward/record.url?scp=85098496899&partnerID=8YFLogxK
U2 - 10.5004/dwt.2020.26446
DO - 10.5004/dwt.2020.26446
M3 - Article
AN - SCOPUS:85098496899
SN - 1944-3994
VL - 208
SP - 407
EP - 422
JO - Desalination and Water Treatment
JF - Desalination and Water Treatment
ER -