Mechanistic aspects of magnetic MgAlNi barium-ferrite nanocomposites enhanced adsorptive removal of an anionic dye from aqueous phase

Journal of Saudi Chemical Society

卷:24

Nabeel Jarrah¹  Shamsuddeen A. Haladu²  Mohammad H. Essa³  Mukarram Zubair⁴  Aleem Qureshi⁵  Nawaf I. Blaisi⁶  Nuhu Dalhat Mu'azu⁶  Taye Saheed Kazeem⁶  Mamdouh A. Al-Harthi⁶  Mohammad Saood Manzar⁶ 

[1] Corresponding author.;

[2] Minerals, 31261 Dhahran, Saudi Arabia;

[3] Department of Basic Sciences, College of Engineering, Imam Abdulrahman bin Faisal University Dammam, 31451 Dammam, Saudi Arabia;

[4] Department of Chemical Engineering, Mutah University, 61710 Karak 61710, Jordan;

[5] Department of Civil and Environmental Engineering, King Fahd University of Petroleum &

[6] Department of Environmental Engineering, College of Engineering, Imam Abdulrahman bin Faisal University Dammam, 31451 Dammam, Saudi Arabia;

关键词: Dyes adsorption;    Magnetic layered double hydroxide;    Uptake mechanisms;    Adsorption–desorption;    Adsorbent regeneration;    Aqueous phase adsorption;   

DOI  :  

来源: DOAJ

【 摘 要 】

The mechanistic aspects of improved aqueous removal of methyl orange (MO) dyes using high performance novel magnetic MgAlNi barium-ferrite (MgAlNi-BaFe) ternary double layer hydroxide (LDH) nanocomposites is reported in this study. Detailed surface characterization coupled with kinetic, equilibrium, thermodynamics and regeneration studies were undertaken under different operational conditions of temperature (298–318 K), initial concentration (20–100 mg/L), pH (2–6). The kinetic results show that MO sorption was mainly, associated with pseudo-second order and intra-particular diffusion process. The MO adsorption onto the MgAlNi-BaFe nanocomposites suggests a multi-layered sorption process that is endothermic and spontaneous in nature. The MO adsorption mechanism insight taken in cognizance of FTIR, XRD, pKa, zeta potential, the adsorbates surface functional groups and the adsorbate-adsorbent surface charges interactions suggest involvement of hydrogen bonding and n-π interactions, predominantly via physisorption process (ΔG° = −7.406 to −5.69 kJ/mol). The excellent adsorptive performance of the MgAlNi-BaFe adsorbents for removal of MO from water compared with other magnetic LDH nanocomposites was further elucidated via the MgAlNi-BaFe nanomaterials high rates of regeneration and superior performances for three successive desorption-adsorption cycles. This study demonstrates the high potentials of employing MgAlNi-BaFe nanomaterials for removal of dyes from water and wastewater.

【 授权许可】

Unknown