Equilibrium and thermodynamic studies of Pb(II), Zn(II), Cu(II) and Cd(II) adsorption onto mesembryanthemum activated carbon

Alkherraz, Abdulfattah Mohammed; Ali, Aisha Khalifa; Elsherif, Khaled Muftah

doi:10.26655/JMCHEMSCI.2020.1.1

Document Type : Original Article

Authors

¹ Chemistry Department, Faculty of Science, Misurata University, Misurata-Libya

² Chemistry Department, Faculty of Science, University of Benghazi, Benghazi-Libya

https://doi.org/10.26655/JMCHEMSCI.2020.1.1

Abstract

Adsorption of Pb(II), Zn(II), Cu(II), and Cd(II) ions onto Mesembryanthemum activated carbon in a batch experimentby taking the consideration of adsorbent particle size, initial concentration, temperature, and pH was studied. Langmuir and Freundlich isotherm models were tested to fit the equilibrium data. Freundlich isotherm model gave a better fit to our experimental data than the Langmuir model. The adsorption capacity values were 66.67, 52.63, 45.45, and 40.00 mg/g for Pb(II), Zn(II), Cu(II), and Cd(II), respectively. The ideal pH for all metal ions adsorption was at pH 5. The obtained thermodynamic parameters suggested that the adsorption process was physical, spontaneous (ΔG^o< 0), and endothermic (ΔH^o> 0).

Graphical Abstract

Keywords

References

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Journal of Medicinal and Chemical Sciences

Equilibrium and thermodynamic studies of Pb(II), Zn(II), Cu(II) and Cd(II) adsorption onto mesembryanthemum activated carbon

References

References

Volume 3, Issue 1
January 2020
Pages 1-10

Equilibrium and thermodynamic studies of Pb(II), Zn(II), Cu(II) and Cd(II) adsorption onto mesembryanthemum activated carbon

References

References

Volume 3, Issue 1January 2020Pages 1-10

Volume 3, Issue 1
January 2020
Pages 1-10