Modelling and optimization of chromiumIII biosorption on soybean meal

• Authors: Anna Witek-Krowiak , Daria Podstawczyk , Katarzyna Chojnacka , Anna Dawiec , Krzysztof Marycz
• Languages of publication: EN

Abstracts

EN

Abstract In this investigation a waste biological material, soybean meal, was applied as a biosorbent for heavy metal ions (CrIII). The diffusive Webber-Morris model and the pseudo-II-order model suitably described the kinetics of CrIII ions binding on soybean meal. The Langmuir-Freundlich equation was valid for the description of the isotherm. Inductively coupled plasma optical emission spectroscopy (ICP-OES), FTIR and scanning electron microscopy with an energy dispersive X-ray analytical system (SEM-EDX) were used in order to identify the mechanism of the metal ions binding. The analysis of the composition of the enriched soybean meal confirmed the contribution of ion exchange in the biosorption process. Three-variable-three-level Box-Behnken design was used to determine the optimal conditions for biosorption of CrIII on soybean meal. The optimal conditions for predicted maximum Cr3+ uptake (61.07 mg g−1) by soybean meal were estimated by Matlab and established as temperature of 38.04°C, initial metal concentration 500 mg L−1 and biosorbent dosage 1 g L−1. Graphical abstract [...]

Keywords

EN

Biosorption; Soybean meal; Chromium; Optimization; Box-Behnken

• Publisher: De Gruyter Open
• Journal: Open Chemistry
• Year: 2013
• Volume: 11
• Issue: 9
• Pages: 1505-1517

Dates

published

1 - 9 - 2013

online

29 - 6 - 2013

Contributors

author

Anna Witek-Krowiak

• Department of Chemistry, Wroclaw University of Technology, Wroclaw, 50-373, Poland

author

Daria Podstawczyk

• Department of Chemistry, Wroclaw University of Technology, Wroclaw, 50-373, Poland

author

Katarzyna Chojnacka

• Institute of Inorganic Technology and Mineral Fertilizers, Wroclaw University of Technology, 50-372, Wroclaw, Poland

author

Anna Dawiec

• Department of Chemistry, Wroclaw University of Technology, Wroclaw, 50-373, Poland

author

Krzysztof Marycz

• Laboratory of Electron Microscopy, Wroclaw University of Environmental and Life, Sciences, 50-631, Wroclaw, Poland

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Identifiers

DOI

10.2478/s11532-013-0274-8