This article refers to:
Article title: Adsorption of Cd2+ from aqueous solution onto composites
based on powdered activated carbon and Maghnia clay
adsorbents: experimental design, kinetic, equilibrium and
thermodynamic study
Authors: Souhila Ait Hamoudi, Loubna Nouri, Nedjma Khelifa, Sabra Hemidouche,
Aissa Khelifi, Amel Boudjemaa and Khaldoun Bachari
Journal: International Journal of Environmental Analytical Chemistry
DOI: https://doi.org/10.1080/03067319.2023.2267450
When this article was first published online, the was erroneously deleted.
Figure 9. Iso curves and response surfaces.
Below is the missing .
The online version of this article has been corrected.