Mathematical models applied to the Cr(III) and Cr(VI) breakthrough curves

Margarita Ramirez C.; Mônica Pereira da Silva; Selma G. Ferreira L.; Oscar Vasco E.

doi:10.1016/j.jhazmat.2006.11.056

Mathematical models applied to the Cr(III) and Cr(VI) breakthrough curves

Margarita Ramirez C.
, Mônica Pereira da Silva
, Selma G. Ferreira L.
, Oscar Vasco E.

Research output: Contribution to scientific journal › Article in an indexed scientific journal › peer-review

21 Scopus citations

Abstract

Trivalent and hexavalent chromium continuous biosorption was studied using residual brewer Saccharomyces cerevisiae immobilized in volcanic rock. The columns used in the process had a diameter of 4.5 cm and a length of 140 cm, working at an inlet flow rate of 15 mL/min. Breakthrough curves were used to study the yeast biosorption behavior in the process. The saturation time (t_s) was 21 and 45 h for Cr(III) and Cr(VI), respectively, and a breakthrough time (t_b) of 4 h for Cr(III) and 5 h for Cr(VI). The uptake capacity of the biosorbent for Cr(III) and Cr(VI) were 48 and 60 mg/g, respectively. Two non-diffusional mathematical models with parameters t₀ and σ were used to adjust the experimental data obtained. Microsoft Excel tools were used for the mathematical solution of the two parameters used.

Original language	English
Pages (from-to)	86-90
Number of pages	5
Journal	Journal of Hazardous Materials
Volume	146
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jhazmat.2006.11.056
State	Published - 19 Jul 2007

Keywords

Biosorption
Breakthrough curves
Chromium
Models
Saccharomyces cerevisiae

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10.1016/j.jhazmat.2006.11.056

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title = "Mathematical models applied to the Cr(III) and Cr(VI) breakthrough curves",

abstract = "Trivalent and hexavalent chromium continuous biosorption was studied using residual brewer Saccharomyces cerevisiae immobilized in volcanic rock. The columns used in the process had a diameter of 4.5 cm and a length of 140 cm, working at an inlet flow rate of 15 mL/min. Breakthrough curves were used to study the yeast biosorption behavior in the process. The saturation time (ts) was 21 and 45 h for Cr(III) and Cr(VI), respectively, and a breakthrough time (tb) of 4 h for Cr(III) and 5 h for Cr(VI). The uptake capacity of the biosorbent for Cr(III) and Cr(VI) were 48 and 60 mg/g, respectively. Two non-diffusional mathematical models with parameters t0 and σ were used to adjust the experimental data obtained. Microsoft Excel tools were used for the mathematical solution of the two parameters used.",

keywords = "Biosorption, Breakthrough curves, Chromium, Models, Saccharomyces cerevisiae",

author = "\{Ramirez C.\}, Margarita and \{Pereira da Silva\}, M{\^o}nica and \{Ferreira L.\}, \{Selma G.\} and \{Vasco E.\}, Oscar",

year = "2007",

month = jul,

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doi = "10.1016/j.jhazmat.2006.11.056",

language = "Ingl{\'e}s",

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TY - JOUR

T1 - Mathematical models applied to the Cr(III) and Cr(VI) breakthrough curves

AU - Ramirez C., Margarita

AU - Pereira da Silva, Mônica

AU - Ferreira L., Selma G.

AU - Vasco E., Oscar

PY - 2007/7/19

Y1 - 2007/7/19

N2 - Trivalent and hexavalent chromium continuous biosorption was studied using residual brewer Saccharomyces cerevisiae immobilized in volcanic rock. The columns used in the process had a diameter of 4.5 cm and a length of 140 cm, working at an inlet flow rate of 15 mL/min. Breakthrough curves were used to study the yeast biosorption behavior in the process. The saturation time (ts) was 21 and 45 h for Cr(III) and Cr(VI), respectively, and a breakthrough time (tb) of 4 h for Cr(III) and 5 h for Cr(VI). The uptake capacity of the biosorbent for Cr(III) and Cr(VI) were 48 and 60 mg/g, respectively. Two non-diffusional mathematical models with parameters t0 and σ were used to adjust the experimental data obtained. Microsoft Excel tools were used for the mathematical solution of the two parameters used.

AB - Trivalent and hexavalent chromium continuous biosorption was studied using residual brewer Saccharomyces cerevisiae immobilized in volcanic rock. The columns used in the process had a diameter of 4.5 cm and a length of 140 cm, working at an inlet flow rate of 15 mL/min. Breakthrough curves were used to study the yeast biosorption behavior in the process. The saturation time (ts) was 21 and 45 h for Cr(III) and Cr(VI), respectively, and a breakthrough time (tb) of 4 h for Cr(III) and 5 h for Cr(VI). The uptake capacity of the biosorbent for Cr(III) and Cr(VI) were 48 and 60 mg/g, respectively. Two non-diffusional mathematical models with parameters t0 and σ were used to adjust the experimental data obtained. Microsoft Excel tools were used for the mathematical solution of the two parameters used.

KW - Biosorption

KW - Breakthrough curves

KW - Chromium

KW - Models

KW - Saccharomyces cerevisiae

UR - https://www.scopus.com/pages/publications/34250649742

U2 - 10.1016/j.jhazmat.2006.11.056

DO - 10.1016/j.jhazmat.2006.11.056

M3 - Artículo en revista científica indexada

C2 - 17276593

AN - SCOPUS:34250649742

SN - 0304-3894

VL - 146

SP - 86

EP - 90

JO - Journal of Hazardous Materials

JF - Journal of Hazardous Materials

IS - 1-2

ER -

Mathematical models applied to the Cr(III) and Cr(VI) breakthrough curves

Abstract

Keywords

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