Results 171 to 180 of about 18,001 (219)
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The mechanism of cobalt biosorption
Biotechnology and Bioengineering, 1989AbstractNonliving biomass of the common seaweed Ascophyllum nodosum is capable of accumulating cobalt from aqueous solutions to the extent of 160 mg Co2+/g. Successful desorption of cobalt from the biomass by acidic CaCl2 solutions revealed that the metal uptake phenomenon is reversible, implying physical sorption of cobalt.
N, Kuyucak, B, Volesky
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Immobilized microbial nanoparticles for biosorption
Critical Reviews in Biotechnology, 2020Biosorption processes emerge as an economical and eco-friendly alternative technology for the removal of pollutants present in the environment. One biosorption process application is found in the immobilization of microbial cells for the removal of toxic pollutants in industrial wastewater.
Ellen C. Giese +4 more
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Biosorption of Metal Ions on Arthrobacter sp.: Biomass Characterization and Biosorption Modeling
Environmental Science & Technology, 2000A culture of Arthrobacter sp. was tested for its ability to sorb copper, cadmium, and iron ions, and chemical modeling of experimental data was used to interpret the mechanism of biosorption. The purpose of the initial phase was to clarify the nature and concentration of active acidic sites on cell wall with the aid of potentiometric titration of an ...
PAGNANELLI, Francesca +4 more
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Electric field-assisted biosorption
Biotechnology Letters, 2004A bisorption process using electric fields to facilitate contact between a sorbate and non-living biomass is described. The latter is enclosed within a semi-permeable membrane together with an electrode. The counter electrode is placed in the sorbate solution and an established potential across the electrodes facilitates electrokinetic movement of the ...
C R, Riordan +4 more
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Biosorption of cadmium with brown macroalgae
Chemosphere, 2015Sorption experiments for cadmium removal using two brown macroalgae Lessonia nigrescens and Durvillaea antarctica were carried out. Although both types of algae were capable of retaining cadmium, differences in their performance were observed. The optimum pH was 3.7±0.2, and to achieve the equilibrium, 5 days of contact time were necessary for both ...
Claudia, Gutiérrez +3 more
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2013
Biosorption is a unique ability of living or dead biomass to interact with substances such as metals where reduction of sorbate concentration can be achieved. Thus, it has been widely proposed as a promising alternative for metal remediation and recovery owing to its low cost and sustainable “green” nature.
Gan, P.P., Li, S.F.Y.
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Biosorption is a unique ability of living or dead biomass to interact with substances such as metals where reduction of sorbate concentration can be achieved. Thus, it has been widely proposed as a promising alternative for metal remediation and recovery owing to its low cost and sustainable “green” nature.
Gan, P.P., Li, S.F.Y.
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Biosorption of chromium by Termitomyces clypeatus
Colloids and Surfaces B: Biointerfaces, 2007The manuscript describes removal of chromium from aqueous solution by biomass of different moulds and yeasts. The biomass of Termitomyces clypeatus (TCB) is found to be the most effective of all the fungal species tested. The sorption of hexavalent chromium by live TCB depends on the pH of the solution, the optimum pH value being 3.0.
Sujoy K, Das, Arun K, Guha
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2002
There are many interactions between living cells and metals. Essential metals must he taken up by the cells, and they must be stored at their destinations. When the metals are present in the medium in too low a concentration, they must be accumulated. If the ambient metal concentration is too high, even essential metals become toxic and mechanisms of ...
M. Zimmermann, K. Wolf
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There are many interactions between living cells and metals. Essential metals must he taken up by the cells, and they must be stored at their destinations. When the metals are present in the medium in too low a concentration, they must be accumulated. If the ambient metal concentration is too high, even essential metals become toxic and mechanisms of ...
M. Zimmermann, K. Wolf
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1998
The ability of microorganisms to remove metal ions from dilute aqueous solutions is a widely studied phenomenon. Numerous applications of biosorption, mainly in laboratory or in pilot-scale, but recently also industrially, make often use of non-living biomass, which does not require supply of nutrients and can be exposed to environments of high ...
A. I. Zouboulis, K. A. Matis
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The ability of microorganisms to remove metal ions from dilute aqueous solutions is a widely studied phenomenon. Numerous applications of biosorption, mainly in laboratory or in pilot-scale, but recently also industrially, make often use of non-living biomass, which does not require supply of nutrients and can be exposed to environments of high ...
A. I. Zouboulis, K. A. Matis
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Optimization of a Biosorption Column Performance
Environmental Science & Technology, 2008The dynamics of copper and zinc biosorption by Sargassum fluitans was analyzed under variable column operating conditions including different column lengths (15 and 45 cm), metal-feed solution concentrations (1 and 6 meq L(-1)), metal-sorbent affinities (2.01 and 0.45), and interstitial velocities (12 and 4 cm min(-1)).
Ghinwa, Naja, Bohumil, Volesky
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