Producción Científica Profesorado

Removal and confinement of Hg(II) by polyurethane foam functionalized with potassium O-ethyldithiocarbonate



Alvarado Rodríguez, José Guadalupe

2019

Flores-Aguilar, J.F., Galán-Vidal, C.A., Rodríguez, J.A, Alvarado-Rodriguez, J.G, Paez-Hernandez, M.E.Removal and confinement of Hg(II) by polyurethane foam functionalized with potassium O-ethyldithiocarbonate.l. Int. J. Environ. Sci. Technol. (2019), 16, 1005-1014. https://doi.org/10.1007/s13762-018-1723-x


Abstract


Polyurethane foam functionalized with potassium O-ethyldithiocarbonate was evaluated as an extractant material for Hg(II). Several parameters such as pH, mass amount and extraction time were studied. Under the best conditions, a 86% of mercury extraction was achieved. Dubinin?Radushkevich isotherm model indicated that the nature of interaction between functionalized foam and Hg(II) is chemical. Regarding interferents, metallic ions Ag(I) and Sn(IV) have a significant influence on the Hg extraction percentage. In the case of silver, it had a synergistic effect increasing the percentage of mercury due to a metallophilic interaction. Also, once the mercury was extracted, its leaching from the functionalized polyurethane foam was evaluated by means of two sequential extraction procedures. In this way, the functionalized foam emerges as a good material for the removal and confinement of chemical species. Obtained results show that mercury extraction is successful even from complex solution and that mercury-foam material is stable under extreme chemical and temperature conditions.



Producto de Investigación




Artículos relacionados

Structural Studies by NMR and X-Ray Crystallography of N-(p-Toluenesulfonyl)-Amino Acids

Synthesis and Spectroelectrochemical Studies of Mixed Heteroleptic Chelate Complexes of Ruthenium(II...

Synthesis, characterization and crystal structures of organolead dithiolate compounds displaying tra...

Study on the intramolecular transannular chalcogentin interactions in dithiastannecine compounds.

Synthesis and Relative Stability of a Series of Compounds of Type [Fe(II)(bztpen)X]+, Where bztpen =...

Structural differences in eight- and ten-membered heterocyclic tin compounds displaying transannular...

Synthesis and crystal structure of the N-8-(diphenyl-hydroxy-2-aminomethylpyridine)borane

Hypervalence in germanium compounds containing the tetracylic moiety {S(C6H3S)2O}Ge via OGe transann...

Pyrite?Arsenopyrite Galvanic Interaction and Electrochemical Reactivity

Hypervalence at tin(IV) by transannular bonding of sulfur in an eight-membered ring: The case of dib...