Removal of hexavalent and total chromium from aqueous solutions by Schinus molle Bark

Alma Rosa Netzahuatl-Muñoz; Erick Aranda-García; María Del Carmen Cristiani-Urbina; Blanca Estela Barragán-Huerta; Thelma Lilia Villegas-Garrido; Eliseo Cristiani-Urbina

Removal of hexavalent and total chromium from aqueous solutions by Schinus molle Bark

Alma Rosa Netzahuatl-Muñoz, Erick Aranda-García, María Del Carmen Cristiani-Urbina, Blanca Estela Barragán-Huerta, Thelma Lilia Villegas-Garrido, Eliseo Cristiani-Urbina

Escuela Nacional de Ciencias Biológicas (ENCB)

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

The main purpose of this work was to evaluate the potential of Schinus molle bark to remove hexavalent chromium [Cr(VI)] and total chromium from aqueous solutions. Results showed that Schinus molle bark removed Cr(VI) by two different mechanisms: chromium biosorption and bioreduction of Cr(VI) to Cr(III). The capacity for removing Cr(VI) and total chromium gradually increased as the contact time proceeded, reaching values of 97.56 and 73.18 mg g ^-1 respectively, after 120 h. The opposite behavior was observed concerning the volumetric rates of Cr(VI) and total chromium removal. The pseudo-second order model adequately described the kinetic process of chromium biosorption by Schinus molle bark, which suggests that this process chiefly occurs as a result of chemisorption.

Original language	English
Pages (from-to)	2911-2918
Number of pages	8
Journal	Fresenius Environmental Bulletin
Volume	19
Issue number	12
State	Published - 2010

Keywords

Bioreduction
Biosorption
Hexavalent chromium [Cr(VI)]
Schinus molle bark
Total chromium

Cite this

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title = "Removal of hexavalent and total chromium from aqueous solutions by Schinus molle Bark",

abstract = "The main purpose of this work was to evaluate the potential of Schinus molle bark to remove hexavalent chromium [Cr(VI)] and total chromium from aqueous solutions. Results showed that Schinus molle bark removed Cr(VI) by two different mechanisms: chromium biosorption and bioreduction of Cr(VI) to Cr(III). The capacity for removing Cr(VI) and total chromium gradually increased as the contact time proceeded, reaching values of 97.56 and 73.18 mg g -1 respectively, after 120 h. The opposite behavior was observed concerning the volumetric rates of Cr(VI) and total chromium removal. The pseudo-second order model adequately described the kinetic process of chromium biosorption by Schinus molle bark, which suggests that this process chiefly occurs as a result of chemisorption.",

keywords = "Bioreduction, Biosorption, Hexavalent chromium [Cr(VI)], Schinus molle bark, Total chromium",

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TY - JOUR

T1 - Removal of hexavalent and total chromium from aqueous solutions by Schinus molle Bark

AU - Netzahuatl-Muñoz, Alma Rosa

AU - Aranda-García, Erick

AU - Cristiani-Urbina, María Del Carmen

AU - Barragán-Huerta, Blanca Estela

AU - Villegas-Garrido, Thelma Lilia

AU - Cristiani-Urbina, Eliseo

PY - 2010

Y1 - 2010

N2 - The main purpose of this work was to evaluate the potential of Schinus molle bark to remove hexavalent chromium [Cr(VI)] and total chromium from aqueous solutions. Results showed that Schinus molle bark removed Cr(VI) by two different mechanisms: chromium biosorption and bioreduction of Cr(VI) to Cr(III). The capacity for removing Cr(VI) and total chromium gradually increased as the contact time proceeded, reaching values of 97.56 and 73.18 mg g -1 respectively, after 120 h. The opposite behavior was observed concerning the volumetric rates of Cr(VI) and total chromium removal. The pseudo-second order model adequately described the kinetic process of chromium biosorption by Schinus molle bark, which suggests that this process chiefly occurs as a result of chemisorption.

AB - The main purpose of this work was to evaluate the potential of Schinus molle bark to remove hexavalent chromium [Cr(VI)] and total chromium from aqueous solutions. Results showed that Schinus molle bark removed Cr(VI) by two different mechanisms: chromium biosorption and bioreduction of Cr(VI) to Cr(III). The capacity for removing Cr(VI) and total chromium gradually increased as the contact time proceeded, reaching values of 97.56 and 73.18 mg g -1 respectively, after 120 h. The opposite behavior was observed concerning the volumetric rates of Cr(VI) and total chromium removal. The pseudo-second order model adequately described the kinetic process of chromium biosorption by Schinus molle bark, which suggests that this process chiefly occurs as a result of chemisorption.

KW - Bioreduction

KW - Biosorption

KW - Hexavalent chromium [Cr(VI)]

KW - Schinus molle bark

KW - Total chromium

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M3 - Artículo

SN - 1018-4619

VL - 19

SP - 2911

EP - 2918

JO - Fresenius Environmental Bulletin

JF - Fresenius Environmental Bulletin

IS - 12

ER -

Removal of hexavalent and total chromium from aqueous solutions by Schinus molle Bark

Abstract

Keywords

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