Efficient Removal of Lead(II), Cadmium(II) and Zinc(II) from Aqueous Solutions by Bis[2-(1H-benzimidazol-2-il)phenyl]disulfide, a Solid Chelating Agent
Por:
Alberto Barron-Zambrano, Jesus, Ordaz-Rivera, Josue, Carrera-Figueiras, Cristian, Celaya, Christian A., Reina, Miguel, Guillermo Uc-Cayetano, Erbin, Perez-Padilla, Yamile, Estrella-Gutierrez, M. A., Esparza-Ruiz, Adriana
Publicada:
5 may 2023
Categoría:
Chemistry (miscellaneous)
Resumen:
The bis[2-(1H-benzimidazol-2-yl)phenyl]disulfide [bis(2phSbz)] was
characterized by SEM, nitrogen adsorption and desorption, PXRD, and TGA
analysis. It was evaluated as a solid chelating adsorbent to remove
lead(II), cadmium(II), and zinc(II) ions from aqueous solutions.
Bis(2phSbz) consists of agglomerated, rectangular particles of
non-uniform size, lacking porosity and roughness. Metal ion sorption is
pH dependent. The equilibrium data are described by the Langmuir model,
while the pseudo-second-order model fits metal ions ` adsorption
kinetics best. The maximum adsorption capacities for lead(II),
cadmium(II), and zinc(II) were 543.82, 482.56, and 306.96 mg/g,
respectively. In a competitive test, bis(2phSbz) was found to be able to
selectively remove lead(II) from multicomponent solutions. Desorption
efficiencies higher than 65 % can be achieved using EDTA 0.1 M as a
desorption agent. From a theoretical standpoint, we corroborate the
experimental results in terms of some significant quantum mechanics
descriptors. Bis(2phSbz) may be a novel and potentially valuable
chelating adsorbent for lead(II) removal.
Filiaciones:
Alberto Barron-Zambrano, Jesus:
Univ Autonoma Yucatan, Fac Ingn Quim, Perifer Norte Km 33-5,13615 Chuburna Hidalgo Inn, Merida 97203, Yucatan, Mexico
Ordaz-Rivera, Josue:
Univ Autonoma Yucatan, Fac Ingn Quim, Perifer Norte Km 33-5,13615 Chuburna Hidalgo Inn, Merida 97203, Yucatan, Mexico
Carrera-Figueiras, Cristian:
Univ Autonoma Yucatan, Fac Ingn Quim, Perifer Norte Km 33-5,13615 Chuburna Hidalgo Inn, Merida 97203, Yucatan, Mexico
Celaya, Christian A.:
Univ Nacl Autonoma Mexico, Inst Energias Renovables, Priv Xochicalcos s-n Col Ctr, Temixco 62580, Morelos, Mexico
Reina, Miguel:
Univ Nacl Autonoma Mexico, Fac Quim, Dept Quim Inorgan & Nucl, Mexico City 04510, Mexico
Guillermo Uc-Cayetano, Erbin:
Univ Autonoma Yucatan, Fac Ingn Quim, Perifer Norte Km 33-5,13615 Chuburna Hidalgo Inn, Merida 97203, Yucatan, Mexico
Perez-Padilla, Yamile:
Univ Autonoma Yucatan, Fac Ingn Quim, Perifer Norte Km 33-5,13615 Chuburna Hidalgo Inn, Merida 97203, Yucatan, Mexico
Estrella-Gutierrez, M. A.:
Univ Autonoma Yucatan, Fac Ingn Quim, Perifer Norte Km 33-5,13615 Chuburna Hidalgo Inn, Merida 97203, Yucatan, Mexico
Esparza-Ruiz, Adriana:
Univ Autonoma Yucatan, Fac Ingn Quim, Perifer Norte Km 33-5,13615 Chuburna Hidalgo Inn, Merida 97203, Yucatan, Mexico
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