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dc.contributor.authorChen, D.
dc.contributor.authorLewandowski, Zbigniew
dc.contributor.authorRoe, Frank L.
dc.contributor.authorSurapaneni, P.
dc.identifier.citationChen, D., Z. Lewandowski, F. Roe, and P. Surapaneni, "Diffusivity of cu2+ in calcium alginate gel beads," Biotechnology and Bioengineering, 41(7):755-760 (1993).en_US
dc.description.abstractA linear absorption model (LAM) is used to describe the process of metal binding to spherically shaped biopolymers particles. The LAM was solved using a numerical algorithm which calculates diffusivities of metal ion in biopolymer gels. It assumes attainment of rapid metal-biopolymer binding equilibrium accompanied by rate limiting diffusion of the metal ions through the gel. The model was tested using batch experiments in which copper (Cu2+) binding with calcium alginate beads was investigated. Biopolymer density in the beads was varied between 2% and 5%. The diffusion coefficient of Cu2+ calculated from the LAM ranged from 1.19 × 10−9 to 1.48 × 10−9 m2 s−1 (average 1.31 ± 0.21 × 10−9 m2 s−1), independent of biopolymer density. The LAM has theoretical advantages over the shrinking core model (shell progressive model). The latter calculated an unreasonable exponential increase in the diffusion coefficient as density of alginate polymer in the bead increased. © 1993 John Wiley & Sons, Inc.en_US
dc.titleDiffusivity of cu2+ in calcium alginate gel beadsen_US
mus.citation.journaltitleBiotechnology and Bioengineeringen_US
mus.identifier.categoryEngineering & Computer Scienceen_US
mus.relation.collegeCollege of Engineeringen_US
mus.relation.departmentCenter for Biofilm Engineering.en_US
mus.relation.departmentChemical & Biological Engineering.en_US
mus.relation.departmentChemical Engineering.en_US
mus.relation.universityMontana State University - Bozemanen_US
mus.relation.researchgroupCenter for Biofilm Engineering.en_US

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