10.6084/m9.figshare.5670016.v1
Fabiano Tomazini da Conceição
Fabiano Tomazini da
Conceição
Beatriz Cestaro Pichinelli
Beatriz Cestaro
Pichinelli
Mariana Scicia Gabrial da Silva
Mariana Scicia Gabrial da
Silva
Maria Lúcia Pereira Antunes
Maria Lúcia Pereira
Antunes
Mayara Sakamoto Lopes
Mayara Sakamoto
Lopes
Rodrigo Braga Moruzzi
Rodrigo Braga
Moruzzi
Adsorption of Cd2+, Ni2+ and Zn2+ in aqueous solutions using anhydrite and red mud
SciELO journals
2017
red mud
anhydrite
metals
wastewater treatment
2017-12-05 13:48:17
Dataset
https://scielo.figshare.com/articles/dataset/Adsorption_of_Cd2_Ni2_and_Zn2_in_aqueous_solutions_using_anhydrite_and_red_mud/5670016
<p></p><p>ABSTRACT Various minerals and industrial waste have been studied for use as an adsorbent, in particular the anhydrite and the red mud. The red mud is an insoluble residue that is generated in large quantities during the processing of bauxite. The anhydrite is a calcium sulfate (CaSO4), crystallized as a rhombic way, and used as raw material in the industry. In this study, the Cd2+, Ni2+ and Zn2+adsorption capacity by anhydrite and by red mud was evaluated using adsorption isotherms obtained by the Langmuir and Freundlich models. The materials used showed adsorption ≥75±1% for all metals in aqueous solutions with a concentration of 0.5 mmol.25 mL-1. The Langmuir isotherm was more appropriate to describe the phenomenon of Cd2+, Ni2+ and Zn2+ removal, with highest adsorption capacity at 0.47 and 0.51 mmol.g-1 for Cd2+, 1.18 and 1.56 mmol.g-1 for Ni2+, and 0.84 and 1.47 mmol.g-1 for Zn2+, respectively. These values were higher than those ones obtained for other materials described in previous studies.</p><p></p>