scholarly journals Diffusion of Cd(II), Pb(II) and Zn(II) on calcium alginate beads

2019 ◽  
Vol 1 (22) ◽  
pp. 19-34
Author(s):  
Sylwia Kwiatkowska-Marks ◽  
Justyna Miłek ◽  
Ilona Trawczyńska
Keyword(s):  
Calcium Alginate ◽  
Metal Salt ◽  
Effective Diffusion ◽  
Alginate Beads ◽  
Calcium Alginate Beads ◽  
Metal Type ◽  
Porous Carriers ◽  
Heavy Metal Salts ◽  
Alginate Content ◽  
The Mathematical Model

Effective diffusion coefficients (De) for different heavy-metal salts: Cd, Pb, Zn in calcium alginate beads were determined. Their values depend on the metal type, anion from the metal salt, and the alginate content in the beads. The results of calculations indicate a decrease in the values of De, caused by an increase in the alginate content in the alginate sorbent beads. This is in agreement with the mechanism of the diffusion process taking place in porous carriers. Experimental data were found to be in good agreement with the mathematical model, as indicated by high values of the correlation coefficient.

scholarly journals Diffusive Properties of Alginate Biosorbents

2019 ◽  
Vol 26 (1) ◽  
pp. 149-163
Author(s):  
Sylwia Kwiatkowska-Marks ◽  
Justyna Miłek
Keyword(s):  
Metal Salt ◽  
Effective Diffusion ◽  
Alginate Beads ◽  
Effective Diffusion Coefficients ◽  
Metal Type ◽  
Porous Carriers ◽  
Heavy Metal Salts ◽  
Alginate Content ◽  
The Mathematical Model ◽  
Good Agreement

Abstract Effective diffusion coefficients for different heavy-metal salts: Cu, Cd, Zn, Cr, Pb in calcium alginate beads were determined. Their values depended on the metal type, anion from the metal salt, and the alginate content in the beads. The results of calculations indicate a decrease in the values of De, caused by an increase in the alginate content in the alginate sorbent beads. This is in agreement with the mechanism of the diffusion process taking place in porous carriers. Experimental data were found to be in good agreement with the mathematical model, as indicated by high values of the correlation coefficient.

scholarly journals The Enzymatic Decolorization of Textile Dyes by the Immobilized Polyphenol Oxidase from Quince Leaves

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Gulnur Arabaci ◽  
Ayse Usluoglu
Keyword(s):  
Polyphenol Oxidase ◽  
Calcium Alginate ◽  
Enzyme Stability ◽  
Industrial Effluent ◽  
Alginate Beads ◽  
Textile Dyes ◽  
Kinetic Properties ◽  
Synthetic Dyes ◽  
Cydonia Oblonga ◽  
Calcium Alginate Beads

Water pollution due to release of industrial wastewater has already become a serious problem in almost every industry using dyes to color its products. In this work, polyphenol oxidase enzyme from quince (Cydonia Oblonga) leaves immobilized on calcium alginate beads was used for the successful and effective decolorization of textile industrial effluent. Polyphenol oxidase (PPO) enzyme was extracted from quince (Cydonia Oblonga) leaves and immobilized on calcium alginate beads. The kinetic properties of free and immobilized PPO were determined. Quince leaf PPO enzyme stability was increased after immobilization. The immobilized and free enzymes were employed for the decolorization of textile dyes. The dye solutions were prepared in the concentration of 100 mg/L in distilled water and incubated with free and immobilized quince (Cydonia Oblonga) leaf PPO for one hour. The percent decolorization was calculated by taking untreated dye solution. Immobilized PPO was significantly more effective in decolorizing the dyes as compared to free enzyme. Our results showed that the immobilized quince leaf PPO enzyme could be efficiently used for the removal of synthetic dyes from industrial effluents.

scholarly journals Improving the Stability of Astaxanthin by Microencapsulation in Calcium Alginate Beads

PLoS ONE ◽  
2016 ◽  
Vol 11 (4) ◽  
pp. e0153685 ◽  
Author(s):  
Shen-Fu Lin ◽  
Ying-Chen Chen ◽  
Ray-Neng Chen ◽  
Ling-Chun Chen ◽  
Hsiu-O Ho ◽  
...  
Keyword(s):  
Calcium Alginate ◽  
Alginate Beads ◽  
Calcium Alginate Beads ◽  
The Stability

Calcium alginate beads motion in a foaming three-phase bubble column

2017 ◽  
Vol 324 ◽  
pp. 358-369 ◽  
Author(s):  
Gabriel Salierno ◽  
Mauricio Maestri ◽  
Stella Piovano ◽  
Miryan Cassanello ◽  
María Angélica Cardona ◽  
...  
Keyword(s):  
Calcium Alginate ◽  
Bubble Column ◽  
Alginate Beads ◽  
Calcium Alginate Beads ◽  
Three Phase

Size control of calcium alginate beads containing living cells using micro-nozzle array

Biomaterials ◽  
2005 ◽  
Vol 26 (16) ◽  
pp. 3327-3331 ◽  
Author(s):  
Shinji Sugiura ◽  
Tatsuya Oda ◽  
Yasuhiko Izumida ◽  
Yasuyuki Aoyagi ◽  
Mitsuo Satake ◽  
...  
Keyword(s):  
Calcium Alginate ◽  
Size Control ◽  
Alginate Beads ◽  
Living Cells ◽  
Calcium Alginate Beads ◽  
Micro Nozzle
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