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090			_aB-20212
245	1	0	_aEfficient 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
490	0		_vChemistrySelect, 8(17), p.e202300697, 2023
520	3		_aThe 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? percent 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.
700	1	2	_aBarrón-Zambrano, J. A.
700	1	2	_aOrdaz-Rivera, J.
700	1	2	_aCarrera-Figueiras, C.
700	1	2	_aCelaya, C. A.
700	1	2	_aReina, M.
700	1	2	_aUc-Cayetano, E. G.
700	1	2	_aEsparza-Ruiz, A
856	4	0	_uhttps://drive.google.com/file/d/1VV35eqOHIRrBEhFY0k16W9zFeaNwI03n/view?usp=drivesdk _zPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
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