Inhibition behavior of Cu-benzoltriazole-calcium alginate gel beads by piercing and solidification

2017 ◽  
Vol 126 ◽  
pp. 322-330 ◽  
Author(s):  
Xuteng Xing ◽  
Jihui Wang ◽  
Wenbin Hu
Keyword(s):  
Calcium Alginate ◽  
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.

Photocatalytic Oxidative Decolorization of Methyl Orange with Iron Phthalocyanine/Calcium Alginate Gel Beads

2016 ◽  
Vol 703 ◽  
pp. 301-305 ◽  
Author(s):  
Min Hong Xu ◽  
Jian Li Ma ◽  
Meng Xia Qian ◽  
Hui Na Qin
Keyword(s):  
Methyl Orange ◽  
Calcium Alginate ◽  
High Performance ◽  
Ph Value ◽  
Iron Phthalocyanine ◽  
Preparation Methods ◽  
Alginate Gel ◽  
Gel Beads ◽  
Calcium Alginate Gel ◽  
Photocatalytic Material

A photocatalyst iron phthalocyanine/calcium alginate gel bead (FePc@SA) was prepared through the mixture including iron tetra (N-carbonylacrylic) aminophthalocyanine (FePc) and sodium alginate dropped into 5 % (w/v) CaCl2 solution to get gel beads. The color of gel ball was black and the average diameters of gel ball before and after drying were 3.19 mm and 1.20 mm, respectively. Methyl orange was selected as a substrate to investigate the photocatalytic activity of FePc@SA. The results shown that the remaining rate of methyl orange was 19.51 % under the condition of methyl orange 10 mg/L 25 mL, pH value was 3, the dosage of H2O2 was 50 μL, FePc@SA was 0.2 g and visible light irradiation for 3 h. The results indicated that FePc@SA/H2O2 system had an obvious synergistic effect on photocatalytic oxidative decolorization of methyl orange. The decolorization process conformed to the first order kinetics equation, and the half-life of FePc@SA was 76.7 min. Simple preparation methods and excellent photocatalytic properties made FePc@SA became an ideal high performance photocatalytic material, which was applied to deal with wastewater containing organic pollutants.

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