scholarly journals Response surface methodology for optimization of methylene blue adsorption onto carboxymethyl cellulose-based hydrogel beads: adsorption kinetics, isotherm, thermodynamics and reusability studies

RSC Advances ◽  
2019 ◽  
Vol 9 (65) ◽  
pp. 37858-37869 ◽  
Author(s):  
Dalia Allouss ◽  
Younes Essamlali ◽  
Othmane Amadine ◽  
Achraf Chakir ◽  
Mohamed Zahouily
Keyword(s):  
Methylene Blue ◽  
Response Surface Methodology ◽  
Graphene Oxide ◽  
Response Surface ◽  
Adsorption Kinetics ◽  
Carboxymethyl Cellulose ◽  
Environment Friendly ◽  
Hydrogel Beads ◽  
Ionotropic Gelation ◽  
Efficient Adsorbent

Environment-friendly composite hydrogel beads based on carboxymethyl cellulose (CMC), alginate (Alg) and graphene oxide (GO) were synthesized by an ionotropic gelation technique and studied as an efficient adsorbent for methylene blue (MB).

scholarly journals Fabrication and Response Surface Methodology for the Adsorption of Nickel Ferrite-Graphene Oxide Nanocomposite for the Removal of Methylene Blue from Water

2021 ◽  
Vol 2021 ◽  
pp. 1-16
Author(s):  
Lu Thi Mong Thy ◽  
Nguyen Thi Chi Linh ◽  
Nguyen Thi Tuyet Tram ◽  
Tran Hoang Tu ◽  
Le Tan Tai ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Response Surface Methodology ◽  
Graphene Oxide ◽  
Response Surface ◽  
Photoelectron Spectroscopy ◽  
Nickel Ferrite ◽  
Interactive Effects ◽  
Isotherm Models ◽  
Order Kinetic ◽  
X Ray

This study is aimed at studying the adsorption of methylene blue (MB) from aqueous solutions by nickel ferrite/graphene oxide (NGO) nanocomposite. The nanocomposite was characterized by Fourier transform infrared spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy, energy dispersive X-ray, Brunauer-Emmett-Teller-specific surface area, and vibrating sample magnetometer analyses. The interactive effects of critical variables including pH, initial concentration, and contact time on the adsorption capacity of NGO for MB were studied using response surface methodology (RSM) according to composite central design. In RSM models, the predicted values agreed well with verification experiments, with a high correlation coefficient of 0.9887. The adsorption process followed the pseudo-second-order kinetic and Langmuir isotherm models. The maximum capacity for adsorption of MB onto NGO was found to be 476.19 mg/g. Based on these results, NGO has the potential as an efficient adsorbent for the removal of MB from water.

Preparation, characterization and adsorption kinetics of methylene blue dye in reduced-graphene oxide supported nanoadsorbents

2020 ◽  
Vol 309 ◽  
pp. 113171 ◽  
Author(s):  
Mehmet Harbi Calimli ◽  
Mehmet Salih Nas ◽  
Hakan Burhan ◽  
Sibel Demiroglu Mustafov ◽  
Özkan Demirbas ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Adsorption Kinetics ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Reduced Graphene ◽  
Kinetics Of
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