• Keine Ergebnisse gefunden

Biosorption of Binary Mixtures of Copper and Cobalt by Penicillium brevicompactum

N/A
N/A
Info
Herunterladen
Protected

Academic year: 2022

Aktie "Biosorption of Binary Mixtures of Copper and Cobalt by Penicillium brevicompactum"

Copied!
1
0
0

Wird geladen.... (Jetzt Volltext ansehen)

Jetzt herunterladen ( 1 Seite )

Volltext

(1)

Biosorption of Binary Mixtures of Copper and Cobalt by Penicillium brevicompactum

Kolishka Tsekova

a,

*, Maria Ianis

a

, Vera Dencheva

a

, and Sonya Ganeva

b

a Department of Microbial Ecology, Institute of Microbiology, Bulgarian Academy of Sciences, Sofia, Bulgaria. E-mail: kolishka@yahoo.com

b Faculty of Chemistry, Sofia University, Sofia, Bulgaria

* Author for correspondence and reprint requests

Z. Naturforsch.62 c, 261Ð264 (2007); received September 20/October 24, 2006

This work reports on a study of the biosorption of copper and cobalt, both singly and in combination (in equimolar concentrations), by the resting cells ofPenicillium brevicompac- tum. Equilibrium batch sorption studies were carried out at 30∞C and pH 5.0 for a contact time of 1 hour to guarantee that equilibrium was reached. The equilibrium data were ana- lyzed using the Langmuir and Freundlich isotherms. The adsorption of binary mixtures of heavy metal solutions on the fungal biomass was found to be of competitive type where the adsorption capacity for any single metal decreased in the presence of the other. The cobalt ions showed a higher affinity forPenicillium brevicompactumthan the copper ions.

Key words:Heavy Metals, Competitive Sorption,Penicillium brevicompactum

Referenzen

Jetzt herunterladen ( PDF - 1 Seite - 23.64 KB )

ÄHNLICHE DOKUMENTE

Co-Production of Bisphenylpropanoid Amides and Meroterpenes by an Endophytic Penicillium brasilianum Found in the Root Bark of Melia azedarach

From a rice culture of this fungus, the known phenylpropanoid amides brasiliamide A and B were obtained together with and a new, slightly modifi ed congener, along

Co-Production of Bisphenylpropanoid Amides and Meroterpenes by an Endophytic Penicillium brasilianum Found in the Root Bark of Melia azedarach

A literature survey of secondary metabolites produced by this fungus species showed that it is a producer of bisphenylpropanoid amides, named brasiliamides (Fujita et al.,

Correlation Analysis of Reactivity in the Photo- and Electro-Reduction of Cobalt(III) Complexes in Binary Organic Solvent/Water Mixtures

The Kamlet-Taft solvatochromic comparison method was used to separate and quantify these effects: An increase in the percentage of organic co- solvent in the medium enhances

of Cobalt(III) Complexes in Binary Organic Solvent/Water Mixtures

The Kamlet-Taft solvatochromic comparison method was used to separate and quantify these effects: An increase in the percentage of organic co- solvent in the medium enhances

Synthesis, Crystal Structure and Antitumor Study of a Cobalt(II) Complex of the 2-Acetylpyrazine Thiosemicarbazone

The complex consists of discrete monomeric molecules with octahedrally hexa- coordinate cobalt(II) ions, where two acetylpyrazine thiosemicarbazones act as NNS tridentate lig-

Synthesis, Crystal Structure and Antitumor Study of a Cobalt(II) Complex of the 2-Acetylpyrazine Thiosemicarbazone

In our earlier studies, it also was found that the cobalt complex of another thiosemicarbazone ligand exhibited poorer antitumor activity compared to the free ligand against the

Biosorption of Binary Mixtures of Copper and Cobalt by Penicillium brevicompactum

Therefore, as compared to the literature studies on biosorption of Cu(II) as well as Co(II) in a single-metal system, the bio- sorption capacity of Penicillium brevicompactum

Measurements of Tetraalkylammonium, Copper(I) and Sodium Salts in Binary Mixtures of Acetonitrile and n-Butyronitrile at 298.15 K

Table 2 shows that the K s,φ o values for copper(I) per- chlorate and sodium perchlorate are negative and large in AN + n-BTN mixtures at all compositions of the solvent mixtures.. Et