The removal of Pb(II) by Phanerochaete chrysosporium

Date

2000-11-01

Author

Yetiş, Ülkü
Dilek, Filiz Bengü
Özcengiz, Gülay

Metadata

Show full item record

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

Item Usage Stats

85
views

0
downloads

The removal of Pb(II) by live, resting and dead cells of a lignolytic white-rot fungus, Phanerochaete chrysosporium was investigated. Kinetic studies revealed the fact that adsorption is a two-stage process: a very rapid surface adsorption within the first hour and a slow intracellular diffusion during 2 h of metal exposure. The results showed that the resting cells were able to uptake up to 80 mg Pb(II)/g dry cell. The saturation sorption capacities of live and dead cells were 9 and 20 mg Pb(II)/g dry cell, respectively. The biomass originated from different growth phases and exhibited different adsorption capacities for Pb(II). It appeared that the young resting cells held higher Pb(II) adsorption capacities than old ones. Acid and alkali pre-treatments of the old resting cells increased the sorption capacity; although the capacity of virgin young fungi was never attained. Acid treatment of the young cells reduced the adsorption capacity remarkably; however, alkali treatment improved it.

Subject Keywords

Pb(II) removal, White-rot fungi, Phanerochaete chrysosporium, Biosorption, bioaccumulation, Pretreated cell mass, Heavy metals

URI

https://hdl.handle.net/11511/33157

Journal

Water Research

DOI

https://doi.org/10.1016/s0043-1354(00)00155-x

Collections

Department of Environmental Engineering, Article

Suggestions

OpenMETU
Core

Ni(II) biosorption by Polyporous versicolor Dilek, Filiz Bengü; Yetiş, Ülkü (2002-02-02) The use of the white-rot fungus Polyporous versicolor in Ni(II) removal as biosorbent was investigated. Kinetic and isotherm sorption experiments were conducted to evaluate the effects of pH, time, temperature. and mixing intensity. Time-course variation of Ni(II) uptake at various temperatures (20, 25, and 35 degreesC) and initial Ni(II) concentrations revealed that both the initial Ni(II) uptake rate and the Ni(II) sorption capacity increased with increasing temperature. Ni(II) biosorption isotherms deter...
Bone generation on PHBV matrices: an in vitro study Kose, GT; Korkusuz, F; Korkusuz, P; Purali, N; Ozkul, A; Hasırcı, Vasıf Nejat (2003-12-01) Bone formation was investigated in vitro by culturing rat marrow stromal osteoblasts in biodegradable, macroporous poly(3-hydroxybutyric acid-co-3-bydroxyvaleric acid) (PHBV) matrices over a period of 60 days. Foams were prepared after solvent evaporation and solute leaching. PHBV solutions with different concentrations were prepared in chloroform: dichloromethane (1:2, v/v). In order to create a matrix with high porosity and uniform pore sizes, sieved sucrose crystals (300-500 mum) were used. PHBV foams we...
Heavy metal biosorption by white-rot fungi Yetiş, Ülkü; Özcengiz, Gülay; Dilek, Filiz Bengü (1998-06-26) In this study, heavy metal biosorption potentials of two white-rot fungi, Polyporous versicolor and Phanarochaete chrysosporium, which are commonly used in wastewater treatment were determined. Biosorption studies were performed for Cu(II), Cr(III), Cd(II), Ni(II) and Pb(II) at the same operational conditions and the effectiveness of both fungi at removing these heavy metals was compared. It was found that both P. versicolor and P. chrysosporium were the most effective in removing Pb(II) from aqeous solutio...
Plasmacytoid Dendritic Cell Response to CpG ODN Correlates with CXCL16 Expression and Is Inhibited by ox-LDL Gürsel, Mayda; GÜRSEL, İHSAN (Hindawi Limited, 2013-01-01) Structurally distinct classes of synthetic CpG oligonucleotides (ODN) differentially activate human immune cells. K-type ODN trigger plasmacytoid dendritic cells (pDCs) to differentiate and produce TNF alpha. In contrast, D-type ODN stimulate large amounts of IFN alpha secretion from pDCs. The cell-surface receptor CXCL16 was previously shown to influence the nature and specificity of CpG ODN-induced immune activation. Here, we evaluated the expression and function of CXCL16 on pDC from healthy volunteers. ...
Systematically organized nanopillar arrays reveal differences in adhesion and alignment properties of BMSC and Saos-2 cells Ozcelik, Hayriye; Padeste, Celestino; Hasırcı, Vasıf Nejat (2014-07-01) Polymeric test surfaces of P(L-D,L)LA and of a P(L-D,L)LA:PLGA blend decorated with 25 nanopillar covered fields, were used to investigate differences in growth of bone marrow stem cells (BMSC) and osteosarcoma cells (Saos-2). The fields were populated with pillars (ca. 900 nm tall, 200 nm x 200 nm area) separated systematically from each other with 1-10 mu m gaps. Saos-2 cells populated fields decorated with pillars 1 mu m apart but they avoided pillar-free surfaces. In contrast, BMSCs avoided fields with ...

Citation Formats

Ü. Yetiş, F. B. Dilek, and G. Özcengiz, “The removal of Pb(II) by Phanerochaete chrysosporium,” Water Research, pp. 4090–4100, 2000, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/33157.