Accumulation of technetium by cyanobacteria

Geoffrey W. Garnham; Geoffrey A. Codd; Geoffrey M. Gadd

doi:10.1007/BF02186233

Accumulation of technetium by cyanobacteria

Geoffrey W. Garnham
, Geoffrey A. Codd
, Geoffrey M. Gadd

University of Dundee

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

Accumulation of pertechnetate ions (⁹⁹TcO₄^-) by the cyanobacterial species Synechocystis PCC 6803, Synechococcus PCC 6301, Plectonema boryanum, Anabaena variabilis and a red Oscillatoria sp. consisted solely of a single rapid energy-independent phase (biosorption); no energy-dependent uptake was detected. Biosorption of TcO₄^- was concentration-dependent and could be described by a Freundlich adsorption isotherm for each cyanobacterial species examined. Decreasing pH increased the accumulation of TcO₄^- by all the species as did an increase in external NaCl concentration. Accumulation of TcO₄^- was also increased in A. variabilis, P. boryanum and the red Oscillatoria by an increased external osmotic potential. Concentrations of cations affected TcO₄^- accumulation; K⁺ increased accumulation in all the species, Mg²⁺, Ca²⁺, Sr²⁺ and Cs⁺ increased accumulation in Synechococcus PCC 6301 and Ca²⁺ increased accumulation by the red Oscillatoria. Some anions decreased TcO₄^- accumulation; CO₃^2- in A. variabilis and the red Oscillatoria, SO₄^2- in Synechocystis PCC 6803, and HCO₃^- in P. boryanum. The majority of TcO₄^- accumulated by all the cyanobacteria was easily desorbed, with no difference in the amounts desorbed between desorption agents of different pH or cation concentration.

Original language	English
Pages (from-to)	307-315
Number of pages	9
Journal	Journal of Applied Phycology
Volume	5
Issue number	3
DOIs	https://doi.org/10.1007/BF02186233
Publication status	Published - Jun 1993

Keywords

anions
biosorption
cations
cyanobacteria
pertechnetate
pH

ASJC Scopus subject areas

Aquatic Science
Plant Science

Access to Document

10.1007/BF02186233

Cite this

@article{91d42529e92f45d5a7c0bda48cabd5a0,

title = "Accumulation of technetium by cyanobacteria",

abstract = "Accumulation of pertechnetate ions (99TcO4-) by the cyanobacterial species Synechocystis PCC 6803, Synechococcus PCC 6301, Plectonema boryanum, Anabaena variabilis and a red Oscillatoria sp. consisted solely of a single rapid energy-independent phase (biosorption); no energy-dependent uptake was detected. Biosorption of TcO4- was concentration-dependent and could be described by a Freundlich adsorption isotherm for each cyanobacterial species examined. Decreasing pH increased the accumulation of TcO4- by all the species as did an increase in external NaCl concentration. Accumulation of TcO4- was also increased in A. variabilis, P. boryanum and the red Oscillatoria by an increased external osmotic potential. Concentrations of cations affected TcO4- accumulation; K+ increased accumulation in all the species, Mg2+, Ca2+, Sr2+ and Cs+ increased accumulation in Synechococcus PCC 6301 and Ca2+ increased accumulation by the red Oscillatoria. Some anions decreased TcO4- accumulation; CO32- in A. variabilis and the red Oscillatoria, SO42- in Synechocystis PCC 6803, and HCO3- in P. boryanum. The majority of TcO4- accumulated by all the cyanobacteria was easily desorbed, with no difference in the amounts desorbed between desorption agents of different pH or cation concentration.",

keywords = "anions, biosorption, cations, cyanobacteria, pertechnetate, pH",

author = "Garnham, \{Geoffrey W.\} and Codd, \{Geoffrey A.\} and Gadd, \{Geoffrey M.\}",

year = "1993",

month = jun,

doi = "10.1007/BF02186233",

language = "English",

volume = "5",

pages = "307--315",

journal = "Journal of Applied Phycology",

issn = "0921-8971",

publisher = "Springer Science and Business Media B.V.",

number = "3",

}

TY - JOUR

T1 - Accumulation of technetium by cyanobacteria

AU - Garnham, Geoffrey W.

AU - Codd, Geoffrey A.

AU - Gadd, Geoffrey M.

PY - 1993/6

Y1 - 1993/6

N2 - Accumulation of pertechnetate ions (99TcO4-) by the cyanobacterial species Synechocystis PCC 6803, Synechococcus PCC 6301, Plectonema boryanum, Anabaena variabilis and a red Oscillatoria sp. consisted solely of a single rapid energy-independent phase (biosorption); no energy-dependent uptake was detected. Biosorption of TcO4- was concentration-dependent and could be described by a Freundlich adsorption isotherm for each cyanobacterial species examined. Decreasing pH increased the accumulation of TcO4- by all the species as did an increase in external NaCl concentration. Accumulation of TcO4- was also increased in A. variabilis, P. boryanum and the red Oscillatoria by an increased external osmotic potential. Concentrations of cations affected TcO4- accumulation; K+ increased accumulation in all the species, Mg2+, Ca2+, Sr2+ and Cs+ increased accumulation in Synechococcus PCC 6301 and Ca2+ increased accumulation by the red Oscillatoria. Some anions decreased TcO4- accumulation; CO32- in A. variabilis and the red Oscillatoria, SO42- in Synechocystis PCC 6803, and HCO3- in P. boryanum. The majority of TcO4- accumulated by all the cyanobacteria was easily desorbed, with no difference in the amounts desorbed between desorption agents of different pH or cation concentration.

AB - Accumulation of pertechnetate ions (99TcO4-) by the cyanobacterial species Synechocystis PCC 6803, Synechococcus PCC 6301, Plectonema boryanum, Anabaena variabilis and a red Oscillatoria sp. consisted solely of a single rapid energy-independent phase (biosorption); no energy-dependent uptake was detected. Biosorption of TcO4- was concentration-dependent and could be described by a Freundlich adsorption isotherm for each cyanobacterial species examined. Decreasing pH increased the accumulation of TcO4- by all the species as did an increase in external NaCl concentration. Accumulation of TcO4- was also increased in A. variabilis, P. boryanum and the red Oscillatoria by an increased external osmotic potential. Concentrations of cations affected TcO4- accumulation; K+ increased accumulation in all the species, Mg2+, Ca2+, Sr2+ and Cs+ increased accumulation in Synechococcus PCC 6301 and Ca2+ increased accumulation by the red Oscillatoria. Some anions decreased TcO4- accumulation; CO32- in A. variabilis and the red Oscillatoria, SO42- in Synechocystis PCC 6803, and HCO3- in P. boryanum. The majority of TcO4- accumulated by all the cyanobacteria was easily desorbed, with no difference in the amounts desorbed between desorption agents of different pH or cation concentration.

KW - anions

KW - biosorption

KW - cations

KW - cyanobacteria

KW - pertechnetate

KW - pH

UR - https://www.scopus.com/pages/publications/0007892388

U2 - 10.1007/BF02186233

DO - 10.1007/BF02186233

M3 - Article

AN - SCOPUS:0007892388

SN - 0921-8971

VL - 5

SP - 307

EP - 315

JO - Journal of Applied Phycology

JF - Journal of Applied Phycology

IS - 3

ER -

Accumulation of technetium by cyanobacteria

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this