Biosorption of Ni(ii) and Pb(ii) by Phanerochaete chrysosporium from a binary metal system - Kinetics

Date

2001-01-01

Author

Ceribasi, IH
Yetiş, Ülkü

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

84
views

0
downloads

The biosorption kinetics of Ni(II) and Pb(II) by the resting cells of a lignolytic white-rot fungus, Phanerochaete chrysosporium. from a binary metal system were investigated. Kinetic studies revealed that biosorption takes place in two stages: a rapid surface adsorption, within the first 30 min, and a slow intracellular diffusion till the end of the 3 h contact time. In the first minutes of contact solution pH decreased sharply, parallel to the fast metal uptake, probably because of the protons released by the biosorbent. As sorption equilibrium was reached, solution pH also reached an equilibrium level. Metal biosorption capacities increased as the initial metal concentrations (C-i) increased. independent of initial pH (pH(i)) and generally the metal with higher C-i had a higher uptake capacity. The results also show that some portion of the metal. ions sorbed by P. chrysosporium was readily released to solution with a decrease in pH. At equilibrium, the maximum total metal uptake of P. chrysosporium was 109.5 mg/g and was reached at pH(i) 5. Under these circumstances Ni(II) and Pb(II) uptake capacities were 55.9 mg Ni/g and 53.6 mg Pb/g, respectively.

Subject Keywords

Heavy-metals, Saccharomyces-cerevisiae, Aqueous-solutions, Removal, Biomass, Mechanisms, Adsorption, Effluents, Recovery, Copper

URI

https://hdl.handle.net/11511/53683

Journal

WATER SA

Collections

Department of Environmental Engineering, Article

Suggestions

OpenMETU
Core

Cloning and expression of a plasmid-linked pediocin determinant trait of Pediococcus acidilactici F Osmanagaoglu, O; Beyatli, Y; Gündüz, Ufuk (2000-01-01) Plasmid DNA from Pediococcus acidilactici F was prepared by lysozyme-mutanolysin method and purified by cesium chloride-ethidium bromide (CsCl-EtBr) density gradient ultracentrifugation. Agarose gel electrophoresis of plasmid DNA and plasmid-curing experiments suggested that bacteriocin activity was harboured on a small plasmid of approximately 9.1 kb (kilobasepair) in Pediococcus acidilactici F. Plasmid encoding bacteriocin production in P. acidilactici F was examined for restriction enzyme cleavage patter...
Stereoselective synthesis of optically active cyclopenta[c]pyridines and tetrahydropyridines SEZER, Serdar; GÜMRÜKÇÜ, Yasemin; BAKIRCI, Irem; Unver, M. Yagiz; Tanyeli, Cihangir (2012-05-15) The intramolecular Pauson-Khand and ring closing metathesis (RCM) reactions of nitrogen containing chiral enynes and dienes are described. The enyne and diene systems comprised of N-propargylated and N-allylated units are constructed on chiral homoallylic or homopropargylic alcohol backbones, respectively, via S(N)2 and/or modified Mitsunobu reactions. The racemic homoallylic and homopropargylic alcohol derivatives were successfully resolved in high ee (93-99%) by applying chemoenzymatic methods using vario...
Metabolic engineering of aromatic group amino acid pathway in Bacillus subtilis for L-phenylalanine production Ozcelik, IS; Çalık, Pınar; Calik, G; Ozdamar, TH (Elsevier BV, 2004-11-01) Metabolic control sites in the aromatic group amino acid pathway (AAAP) of Bacillus subtilis for L-Phenylalanine (Phe) overproduction were determined; and aiming pathway flux amplification, by cloning the flux controlling gene aroH to a multi-copy plasmid, the impact of single gene cloning on pathway flux distributions were investigated. The branch-point metabolites E4P and PEP+E4P supplied in vitro, enhanced Phe production and well defined perturbations were achieved on the AAAP reactions. The intracellula...
Electronic excited states and excitation transfer kinetics in the Fenna-Matthews-Olson protein of the photosynthetic bacterium Prosthecochloris aestuarii at low temperatures Iseri, EI; Gulen, D (Springer Science and Business Media LLC, 1999-01-01) The molecular structure-function relationship of the Fenna-Matthews-Olson light-harvesting complex of the photosynthetic green bacterium Prosthecochloris aestuarii has been investigated. It has been assumed that the electronic excited states responsible for the function (transfer of electronic excitation energy) result from the dipole-dipole interactions between the bacteriochlorophyll molecules bound to the polypeptide chain of the complex at a specific three-dimensional geometry. The molecular structure-e...
Recombinant transglutaminase production by metabolically engineered Pichia pastoris Gündüz, Burcu; Çalık, Pınar; Yılmaz, Remziye; Department of Biotechnology (2012) Transglutaminases (EC 2.3.2.13) are enzymes that catalyze an acyl transfer reaction between a γ-carboxyamide group of a peptide bound glutaminyl residue (acyl donor) and a variety of primary amines (acyl acceptors), including the amino group lysine. Transglutaminase has a potential in obtaining proteins with novel properties, improving nutritional quality of foods with the addition of essential amino acids, preparing heat stable gels, developing rheological properties and mechanical strength of foods and re...

Citation Formats

I. Ceribasi and Ü. Yetiş, “Biosorption of Ni(ii) and Pb(ii) by Phanerochaete chrysosporium from a binary metal system - Kinetics,” WATER SA, pp. 15–20, 2001, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/53683.