Removal of hexavalent and total chromium from aqueous solution by avocado shell

Eliseo Cristiani-Urbina, Alma Rosa Netzahuatl-Munoz, Maria Del Carmen Cristiani-Urbina

Research output: Contribution to conferencePaper

3 Citations (Scopus)

Abstract

The main aim of this work was to evaluate the potential of Hass avocado (Persea americana Mill var. 'Hass') shell to remove hexavalent chromium [Cr(VI)] and total chromium from aqueous solutions. Results showed that avocado shell 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 101.81 and 61.67 mg g-1respectively, 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 avocado shell, which suggests that this process chiefly occurs as a result of chemisorption. © 2011, AIDIC Servizi S.r.l.
Original languageAmerican English
Pages1339-1344
Number of pages1204
DOIs
StatePublished - 1 Jan 2011
EventChemical Engineering Transactions -
Duration: 1 Jan 2011 → …

Conference

ConferenceChemical Engineering Transactions
Period1/01/11 → …

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chromium
aqueous solution
shell
removal
mill
kinetics

Cite this

Cristiani-Urbina, E., Netzahuatl-Munoz, A. R., & Cristiani-Urbina, M. D. C. (2011). Removal of hexavalent and total chromium from aqueous solution by avocado shell. 1339-1344. Paper presented at Chemical Engineering Transactions, . https://doi.org/10.3303/CET1124224
Cristiani-Urbina, Eliseo ; Netzahuatl-Munoz, Alma Rosa ; Cristiani-Urbina, Maria Del Carmen. / Removal of hexavalent and total chromium from aqueous solution by avocado shell. Paper presented at Chemical Engineering Transactions, .1204 p.
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Cristiani-Urbina, E, Netzahuatl-Munoz, AR & Cristiani-Urbina, MDC 2011, 'Removal of hexavalent and total chromium from aqueous solution by avocado shell', Paper presented at Chemical Engineering Transactions, 1/01/11 pp. 1339-1344. https://doi.org/10.3303/CET1124224

Removal of hexavalent and total chromium from aqueous solution by avocado shell. / Cristiani-Urbina, Eliseo; Netzahuatl-Munoz, Alma Rosa; Cristiani-Urbina, Maria Del Carmen.

2011. 1339-1344 Paper presented at Chemical Engineering Transactions, .

Research output: Contribution to conferencePaper

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Cristiani-Urbina E, Netzahuatl-Munoz AR, Cristiani-Urbina MDC. Removal of hexavalent and total chromium from aqueous solution by avocado shell. 2011. Paper presented at Chemical Engineering Transactions, . https://doi.org/10.3303/CET1124224