Enhancement Adsorption of Copper and Zinc Contaminated Water Using Highly Efficient Graphene Oxide Modified with Acid-Activated Bentonite
Ibrahim, S., Abdel-Monem, Y., Hasan, A. (2022). Enhancement Adsorption of Copper and Zinc Contaminated Water Using Highly Efficient Graphene Oxide Modified with Acid-Activated Bentonite. EKB Journal Management System, 65(132), 903-918. doi: 10.21608/ejchem.2022.154776.6690
Sabah Saad Ibrahim; Yasser Kamal Abdel-Monem; Abdallah Hasan. "Enhancement Adsorption of Copper and Zinc Contaminated Water Using Highly Efficient Graphene Oxide Modified with Acid-Activated Bentonite". EKB Journal Management System, 65, 132, 2022, 903-918. doi: 10.21608/ejchem.2022.154776.6690
Ibrahim, S., Abdel-Monem, Y., Hasan, A. (2022). 'Enhancement Adsorption of Copper and Zinc Contaminated Water Using Highly Efficient Graphene Oxide Modified with Acid-Activated Bentonite', EKB Journal Management System, 65(132), pp. 903-918. doi: 10.21608/ejchem.2022.154776.6690
Ibrahim, S., Abdel-Monem, Y., Hasan, A. Enhancement Adsorption of Copper and Zinc Contaminated Water Using Highly Efficient Graphene Oxide Modified with Acid-Activated Bentonite. EKB Journal Management System, 2022; 65(132): 903-918. doi: 10.21608/ejchem.2022.154776.6690

Enhancement Adsorption of Copper and Zinc Contaminated Water Using Highly Efficient Graphene Oxide Modified with Acid-Activated Bentonite

Egyptian Journal of Chemistry
Volume 65, Issue 132, December 2022, Page 903-918  XML PDF (2.23 MB)
Document Type: Review Articles
DOI: 10.21608/ejchem.2022.154776.6690
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Authors
Sabah Saad Ibrahim1; Yasser Kamal Abdel-Monem2; Abdallah Hasan email 2
1National Water Research Center
2Chemistry Departement, Faculty of Science, Menoufia University, Egypt
Abstract
The efficient sorbents for the heavy metal ions elimination from wastewater, like graphene and carbon nanotubes, are widely utilized in nanomaterials development. Clays (bentonite), activated carbon, metal oxides, and zeolites are commonly used as adsorbents in the heavy metals removal from solutions, such as Pb (II), Zn (II), Cd (II), Ni (II), as well as Cu (II). The graphene oxide (GO), in this study, was produced from graphite powder using a modified Hummer's technique, then altered by doping with acid-activated bentonite. SEM, EDX, TEM, FTIR, and XRD characterized modified graphene oxide. The Cu(II) and Zinc (II) were adsorbed onto the modified GO using the simple batch-adsorption mode. PH values, initial concentration, adsorbent dosage, reaction temperature, and contact time were used to successfully vary the percentage of removed Zn(II) and Cu(II).

At pH 5.6 under the ambient conditions ( according to the diagram of zero point charge ), over 45 min adsorption time, and 0.5 g/L adsorbent dose, the highest removal efficiency of Cu(II) and Zn(II) were 99.75% and 99.79%.

The highest adsorption capacities of modified GO were 39.896 and 39.954 (mg/g) for Cu(II) and Zn(II), respectively, and the experimental values correlate well with the Langmuir isotherm.
Keywords
Heavy metal ions; adsorption; modified graphene oxide; carbon nanotubes; activated carbon; immobilization; kinetic
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