Removal of cadmium, zinc, manganese and chromium cations from aqueous solution by a clay mineral

Equilibrium and Kinetic Parameters Determination of Cr(VI) Adsorption by Hogla Leaves (Typha elephantina Roxb.)

“…Natural materials which are available in large quantities or certain waste products from industries or agriculture have drawn attentions to researchers to be used as inexpensive adsorbents. Some of these are tea factory waste [4], eucalyptus bark [5], Hevea brasilinesis sawdust [6], beech sawdust [7], the agricultural byproduct of Lentinus edodes [8], non-living microbial biomass [9], fresh water algae [10], clay mineral [11], phosphate rock [12], etc. Among these adsorbents the ability of biological materials to adsorb metal ions has drawn considerable attention for the development of an efficient, clean and cheap technology for wastewater treatment [4].…”

Avaliação Ambiental de Produtos e Sistemas Construtivos Inovadores com Resíduos: Lixiviação e Solubilização

“…Argilominerais do tipo 2:1, que é o caso da ilita, da esmectita, da vermiculita, entre outros, podem demonstrar uma grande potencialidade na remoção de íons, exercendo fundamental importância na E/S de metais metálicos (CHUI, 2005;FONSECA et al, 2006;ABOLLINO, 2008). Porém os argilominerais do tipo 1:1, como exemplo da caulinita, pouco contribuem para a adsorção de íons metálicos (FERREIRA, 2008).…”

Stabilization of Cr(VI) from fine ferrochrome dust using exfoliated vermiculite

“…In this study, Freundlich and Langmuir adsorption isotherm models were selected to fit the experimental data [12,13,27,29,30,31].…”

“…Adsorption emerges as one of the most versatile, low cost and effective methods for removing heavy metals from aqueous solutions [13]. Several researchers demonstrated that clay minerals exhibit a great propensity for adsorbing heavy metals such as chromium, lead, nickel, zinc, copper, and cadmium from aqueous solutions [12][13][14][15][16].…”

“…Several researchers demonstrated that clay minerals exhibit a great propensity for adsorbing heavy metals such as chromium, lead, nickel, zinc, copper, and cadmium from aqueous solutions [12][13][14][15][16]. Clay minerals have therefore been widely used in water treatment for decades.…”