The effective diffusion coefficient and the distribution constant for small molecules in calcium-alginate gel beads

1995 ◽  
Vol 47 (4) ◽  
pp. 492-500 ◽  
Author(s):  
Jorun Øyaas ◽  
Ivar Storrø ◽  
Hallvard Svendsen ◽  
David W. Levine
Keyword(s):  
Diffusion Coefficient ◽  
Small Molecules ◽  
Effective Diffusion Coefficient ◽  
Calcium Alginate ◽  
Effective Diffusion ◽  
Distribution Constant ◽  
Alginate Gel ◽  
Gel Beads ◽  
Calcium Alginate Gel

Nitrification and Autotrophic Denitrification in Calcium Alginate Beads

1987 ◽  
Vol 19 (1-2) ◽  
pp. 175-182 ◽  
Author(s):  
Z. Lewandowski ◽  
R. Bakke ◽  
W. G. Characklis
Keyword(s):  
Calcium Carbonate ◽  
Calcium Ions ◽  
Continuous Flow ◽  
Calcium Alginate ◽  
Microbial Respiration ◽  
Flow System ◽  
Alginate Beads ◽  
Alginate Gel ◽  
Gel Beads ◽  
Calcium Alginate Gel

Immobilization of nitrifiers and autotrophic denitrifiers (Thiobacillus denitrificans) within calcium alginate gel was demonstrated. Calcium carbonate reagent was immobilized along with bacteria as the stabilizing agent. Protons released as a result of microbial respiration reacted with calcium carbonate producing calcium ions which internally stabilized the calcium alginate gel. The microbially active gel beads were mechanically stable and active for three months in a continuous flow system without addition of calcium.

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