Adsorption of industrial dye from aqueous solutions onto thermally treated green adsorbent: A complete batch system evaluation

Effective Adsorption of Doxorubicin Hydrochloride on Zirconium Metal-Organic Framework: Equilibrium, Kinetic and Thermodynamic Studies

Synthesis, identification and application of metal organic framework for removal of industrial cationic dyes

New adsorbents of DSAC@ZIF-8 (0.05:0.6) and DSAC@ZIF-8 (0.05:0.6) were prepared using date seed activated carbon (DSAC) loaded at zeolitic imidazolate framework-8 (ZIF-8). The obtained adsorbents DSAC@ZIF-8 (0.05:0.6) and DSAC@ZIF-8 (0.1:0.6) were characterized by Fourier-transform infrared spectroscopy, scanning electron microscopy, powder X-ray diffraction, nitrogen adsorption/desorption tests at 77 K revealed the surface area to be 460.23 m 2 /g for DSAC@ZIF-8 (0.1:0.6). This material showed a high affinity for Gentian violet (GV) uptake from aqueous solutions: the maximum sorption capacity reached 638.99 mg/g at pH 9.0 and ambient temperature. Uptake kinetics and sorption isotherms were obtained and modelled using con-ventional and simple equations: the best results were respectively obtained with the pseudo- second-order rate equation and the Langmuir equation. The activation energy of absorption also was measured to be 15.87 kJ/mol, showing that the process of chemisorption is included. The distribution coefficient was obtained at different temperatures and the thermodynamic parameters have been calculated: the sorption is endothermic, spontaneous (especially at high relative temperature), and contributes to increasing the entropy (randomness) of the system. HCl (1.0 M) was used for GV desorption from DSAC@ZIF-8, and the sorbent could be efficiently recycled for a minimum of three sorption/desorption cycles. Therefore, sorbent could serve as a promising adsorbent for GV removal from industrial wastewater.

Efficient adsorptive removal of industrial dye from aqueous solution by synthesized zeolitic imidazolate framework-8 loaded date seed activated carbon and statistical physics modeling

Naser A. El-Ghamaz

Papers

Synthesis, identification and application of metal organic framework for removal of industrial cationic dyes

Experimental and electrical studies of zeolitic imidazolate framework-8 for the adsorption of different dyes