Adsorption kinetic of arsenates as water pollutant on iron, manganese and iron-manganese-modified clinoptilolite-rich tuffs

Journal of Hazardous Materials
M J Jiménez-CedilloCh Fall

Abstract

Arsenate adsorption from aqueous solutions onto clinoptilolite-heulandite rich tuffs modified with iron or manganese or a mixture of both iron and manganese in this work was investigated. A kinetic model was considered to describe the arsenates adsorption on each zeolitic material. The modified clinoptilolite-heulandite rich tuffs were characterized by scanning electron microscopy and X-ray diffraction analysis. The elemental composition and the specific surface area of the zeolitic material were also determined. The arsenate adsorption by the modified zeolites was carried on in a batch system considering a contact time from 5 min to 24h for the kinetic experimentation. The arsenic was detected by atomic absorption spectrometer using a hydride generator. The kinetics of the arsenate adsorption processes were described by the pseudo-second-order model and the obtained parameter k varies from 0.15 to 5.66 microg/gh. In general, the results suggested that the kinetic adsorption of arsenates on the modified clinoptilolite-rich tuffs depend of the metallic specie that modified the surface characteristics of the zeolitic material, the chemical nature of the metal as well as the association between different metallic chemical species ...Continue Reading

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Citations

Apr 13, 2010·Environmental Science and Pollution Research International·Yi-Fong PanTsair-Fuh Lin
May 6, 2014·Journal of Hazardous Materials·Hugo Figueiredo, Cristina Quintelas
Jan 18, 2012·Journal of Environmental Management·Qin LiJianping Zhai
Feb 14, 2012·Journal of Environmental Management·E Gutiérrez-SeguraC Fall
Jun 29, 2010·Journal of Hazardous Materials·Daniel Dianchen GangLianShin Lin
Apr 29, 2014·International Journal of Environmental Analytical Chemistry·Min WuMiklas Scholz
Apr 18, 2012·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Jonatan Torres-PerezYves Andres
Jul 6, 2017·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Pavlina AmbrozovaVinh Dinh Nguyen
Aug 14, 2020·International Journal of Environmental Research and Public Health·Tomáš BakalárZuzana Hajduová
Jan 22, 2021·Journal of Hazardous Materials·Xiaobin TangHeng Liang
Jul 3, 2021·International Journal of Environmental Research and Public Health·Celia Margarita Mayacela-RojasCarmine Fallico

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