Natural and Synthetic Carriers Suitable for Immobilization of Viable Cells, Active Organelles, and Molecules

Gemeiner, Peter; Rexová-Benková, Ľubomíra; Švec, František; Norrlöw, Olof

doi:10.1007/978-94-011-1334-2_1

Cited by 14 publications

(12 citation statements)

References 341 publications

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“…The reason why there are higher levels of adsorption in organic materials is that there is a great variety of reactive groups such as carboxyl, amino, hydroxyl among others which are located on the surface of the organic material. These usually contain a certain amount of nutrients that help the bacteria to grow and improve their adsorption (Gemeiner et al 1994). On the other hand, there is a practical knowledge on the ration between the volume of some support materials and the volume of the reactor.…”

Section: Bod 5 Removalmentioning

confidence: 99%

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Assessment of Luffa cylindrica as Support in Biofilms Reactors for the Biological Treatment of Domestic Wastewater

Ruiz-Marín

Campos-García

Loría

et al. 2008

Water Air Soil Pollut

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A simultaneous treatment of BOD, phosphorous and ammonia in artificial wastewater was carried out in biofilm reactors with Luffa cylíndrica as organic support and compared with PVC's support under variations of dissolved oxygen of 1.5 a 3.0 mg l −1 in the same reactor. During semicontinous treatment, the removal of BOD (92.5%) with Luffa cilíndrica was higher than PVC support (80%). Nitrification only existed at levels of oxygen of 3 mg l −1 , showed in the effluent a final concentration of ammonium of 17 and 19 mg l −1 for Luffa cilíndrica and PVC support, respectively. In reactors with Luffa cilíndrica a higher percentage of P removal (40%) was reached, while no elimination in reactors with PVC was observed. The formation of anaerobic-aerobic zones inside the natural support probably allowed the increase in the efficiency of removal of phosphorous. Oxidation of organic matter, P removal and nitrification can be achieved with the variation of oxygen inside of the same biofilm reactor using L. cylindrical as support material.

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Section: Bod 5 Removalmentioning

confidence: 99%

“…For instance, the adsorption is 248 and 2 mg g −1 on wood chips and inorganic silica, respectively (Gemeiner et al 1994). The reason for the adsorption to be present is due to the great variety of reactive groups (carboxyl, amino, hydroxyl, among others) located in the surface of the organic material.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Luffa cylindrica as Support in Biofilms Reactors for the Biological Treatment of Domestic Wastewater

Ruiz-Marín

Campos-García

Loría

et al. 2008

Water Air Soil Pollut

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“…Immobilization of microorganisms for biotransformation of steroids received increasing attention over the last several years (3,7,11,15,20,22). However, immobilization of fungal mycelia is difficult and often results in subsequent loss of many metabolic activities due to damage of the cells.…”

Section: Introductionmentioning

confidence: 99%

Production of 11alpha-hydroxyprogesterone using Aspergillus terreus immobilized on polytetrafluoroethylene

Ahmed¹

2007

Braz. J. Microbiol.

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In attempt to immobilize the mycelial fungi on a new hydrophobic matrix, Aspergillus terreus mycelia were immobilized into polytetrafluoroethylen (PTFE) and used for selected conversion of progesterone to 11α-hydroxyprogesterone. The immobilized cells exhibited higher yields than the free cells. Different parameters that can affect the cell activity were measured. The optimum pH was 6 and the optimum temperature was 30ºC. Higher transformation activities were achieved with matrix contained 40% PTFE. No considerable loss in yield was observed with storage of the cells at 4ºC for 30 days. Utilization of the immobilized cells in repeated batch processes indicated that the cells retained about 84% of their activity after reuse for eight successive cycles.

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“…Potassium pectate was prepared by deesterification of apple pectin, type Grinsted TM Pectin RS (Pektin, Smiřice, Czech Republic) with alkali. Data characterizing some of these materials were published recently (17). Sodium alginate from Macrocystis perifera and -carrageenan from Eucheuma cottonii were purchased from Sigma Chemical Co. (St. Louis, MO).…”

Section: Methodsmentioning

confidence: 99%

Use of Bioluminometry for Determination of Active Yeast Biomass Immobilized in Ionotropic Hydrogels

Navrátil

Dömény

Hronský

et al. 2000

Analytical Biochemistry

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Natural and Synthetic Carriers Suitable for Immobilization of Viable Cells, Active Organelles, and Molecules

Cited by 14 publications

References 341 publications

Assessment of Luffa cylindrica as Support in Biofilms Reactors for the Biological Treatment of Domestic Wastewater

Assessment of Luffa cylindrica as Support in Biofilms Reactors for the Biological Treatment of Domestic Wastewater

Production of 11alpha-hydroxyprogesterone using Aspergillus terreus immobilized on polytetrafluoroethylene

Use of Bioluminometry for Determination of Active Yeast Biomass Immobilized in Ionotropic Hydrogels

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