Calcium alginate bead manufacture: With and without immobilised yeast. Drop formation at a two‐fluid nozzle

Gilson, C. D.; Thomas, Adrian

doi:10.1002/jctb.280620304

Cited by 34 publications

(20 citation statements)

References 5 publications

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“…One of the important properties of alginate is the ability to form hydrogels [13,14]. An aqueous solution of alginate is readily transformed into a hydrogel by the addition of metallic divalent cations such as Ca 2+ .…”

Section: Introductionmentioning

confidence: 99%

Adsorption equilibrium of copper ion and phenol by powdered activated carbon, alginate bead and alginate-activated carbon bead

Kim

Jin

Park

et al. 2008

Journal of Industrial and Engineering Chemistry

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Section: Introductionmentioning

confidence: 99%

Adsorption equilibrium of copper ion and phenol by powdered activated carbon, alginate bead and alginate-activated carbon bead

Kim

Jin

Park

et al. 2008

Journal of Industrial and Engineering Chemistry

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“…One of the important properties of alginate is the ability to form hydrogels (Clark and Ross-Murphy 1987;Gilson and Thomas 1995). An aqueous solution of alginate is readily transformed into a hydrogel by the addition of metallic divalent cations, such as Ca 2+ .…”

Section: Introductionmentioning

confidence: 99%

Adsorption equilibrium and kinetics of copper ions and phenol onto modified adsorbents

2010

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The adsorption equilibrium and kinetics of single and binary component copper ions and phenol onto powdered activated carbon (PAC), alginate beads and alginateactivated carbon beads (AAC) were studied. Adsorption equilibrium data for single component copper ions and phenol onto the adsorbents could be represented by the Langmuir equation. Multicomponent equilibrium data were correlated by the extended Langmuir and ideal adsorbed solution theory (IAST). The IAST gave the best fit to our data. The amount of copper ions adsorbed onto the AAC beads in the binary component was greater than that of phenol. The internal diffusion coefficients were determined by comparing the experimental concentration curves with those predicted from surface diffusion and pore diffusion model. AbbreviationsA S surface area of adsorbent (m 2 /g) C i initial concentration of bulk fluid (mol/m 3 ) C e saturation concentration of the adsorbate in the liquid phase (mol/m 3 ) d P particle diameter (m) D P pore diffusion coefficient (m 2 /s) D S surface diffusion coefficient (m 2 /s) k f film mass transfer coefficient (m/s) k F isotherm parameter (mol/kg)(mol/m 3 ) −1/n k L isotherm parameter (m 3 /mol) k S isotherm parameter (mol/m 3 ) −1/n N A rate of mass transfer of adsobates to the external surface of the adsorbent (mol/s) N number of component q equilibrium amount adsorbed on the adsorbent (mol/kg) q m maximum adsorption capacity of adsorbent (mol/kg) R P particle radius (m) V volume of solution (m 3 ) W weight of adsorbent (kg)

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“…7) Recently, the gelforming property of this polymer has led to its extensive use in biomedicine and biotechnology industry to immobilize or encapsulate enzymes, subcelluler organelles and living cells. [8][9][10][11][12] Thus the prominent immobilizing ability of alginic acid and alginates seems to be effective for the granulation of fine crystals of AMP exchanger, and this new granulation method has a number of advantages of simplicity for preparation, high content of active component (AMP), high poros-ity, mechanical strength and strong acid resistance. 13) The gel network of alginate matrices is also expected to prevent the exchanger from dislodgment during operation of packed column.…”

Section: Introductionmentioning

confidence: 99%

Selective Uptake of Cesium by Ammonium Molybdophosphate (AMP)-Calcium Alginate Composites

Mimura

Saito

Akiba

et al. 2001

Journal of Nuclear Science and Technology

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The uptake properties of Cs + for ammonium molybdophosphate (AMP, (NH 4 ) was found to have a relatively low value of −9.7 kJ/mol compared to other inorganic ion exchangers, indicating high selectivity of AMP for Cs + ions. The fine crystals of AMP exchanger were granulated with calcium alginate (CaALG) gel polymer as an immobilization matrices. The uptake rate of Cs + for AMP-CaALG composite was fairly fast and the uptake attained equilibrium within 3 h; the uptake was above 96% even in the presence of 5 M (=mol/dm 3 ) NaNO 3 . The distribution coefficient of Cs + , K d,Cs , decreased in the order of coexisting ions, H + >Na + >K + >NH + 4 . In a wide HNO 3 concentration region of 10 −2 -5 M, the K d,Cs value for the composite was around 10 4 cm 3 /g, while those for other elements, Na + , Sr 2+ , Co 2+ , Eu 3+ and Am 3+ , were less than 10 2 cm 3 /g. The uptake of Cs + followed a Langmuir adsorption isotherm, and the uptake capacity of Cs + increased with the content of AMP immobilized in the composite. The trace amounts of Cs + in the presence of HNO 3 were selectively adsorbed on the composite column.)

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Calcium alginate bead manufacture: With and without immobilised yeast. Drop formation at a two‐fluid nozzle

Cited by 34 publications

References 5 publications

Adsorption equilibrium of copper ion and phenol by powdered activated carbon, alginate bead and alginate-activated carbon bead

Adsorption equilibrium of copper ion and phenol by powdered activated carbon, alginate bead and alginate-activated carbon bead

Adsorption equilibrium and kinetics of copper ions and phenol onto modified adsorbents

Selective Uptake of Cesium by Ammonium Molybdophosphate (AMP)-Calcium Alginate Composites

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