Two-phase exponential model for describing kinetics of biosorption of Cr(III) ions by microalgae Spirulina maxima

• Published in: Chemical engineering journal (Lausanne, Switzerland : 1996) Vol. 197; pp. 49 - 55
• Main Authors: Saeid, Agnieszka, Chojnacka, Katarzyna, Balkowski, Grzegorz
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier B.V 15.07.2012; Elsevier
• Subjects: Applied sciences; Biological and medical sciences; biosorption; Biosorption kinetics; Biotechnology; Chemical engineering; Correlation; Cr(III) ions; Diffusion; Diffusion layers; Exact sciences and technology; Fundamental and applied biological sciences. Psychology; ions; Mathematical models; Maxima; Methods. Procedures. Technologies; microalgae; Others; Rate constants; Spirulina maxima; Two-phase exponential model; Various methods and equipments; Cr(III) ions; Two-phase exponential model; Biosorption kinetics; Spirulina maxima; Second order; Biosorption; Kinetics; Rate constant; Diffusion; Modeling; Boundary layer
• ISSN: 1385-8947; 1873-3212
• DOI: 10.1016/j.cej.2012.05.001

► A new two-phase exponential model for describing kinetics of biosorption was used. ► It was proved that obtained parameters were correlated with the parameters of models described in the literature. ► Application of new model yielding better description of obtained results. In the present work, two-phase exponential model for describing kinetics of biosorption was used. The parameters were compared with other models (pseudo-second order model, Weber–Morris model of diffusion into the boundary layer) used in describing kinetics of the experiments. It was shown that the proposed model was a good tool in description of the results. The rate constants of two-phase exponential model were considered valid and were statistically significantly correlated with parameters of other models.