Removal of uranium from solution using residual brewery yeast: Combined biosorption and precipitation

C Riordan, M Bustard, R Putt, AP McHale

Research output: Contribution to journalArticle

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Abstract

Whilst unwashed preparations of biomass from a local brewery had an apparent maximum biosorption capacity for uranium of 360 mg/g (dry weight biomass) washing reduced this maximum to 150 mg/g. Homogenization of both biomass preparations and recovery of cellular debris had no significant effect on the maximum biosorption capacities although at lower equilibrium concentrations of uranium differences in the biosorption capacities were detected. When unwashed biomass was retained by a semi-permeable membrane 40% of uranium used in the experiments precipitated outside that membrane. Therefore a significant proportion of the uranium removed from solution, and previously attributed to biosorption by the yeast biomass, resulted from precipitation brought about by interaction with low molecular weight components loosely associated with the biomass.
LanguageEnglish
Pages385-387
JournalBiotechnology Letters
Volume19
Issue number4
DOIs
Publication statusPublished - Apr 1997

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Removal of uranium from solution using residual brewery yeast: Combined biosorption and precipitation. / Riordan, C; Bustard, M; Putt, R; McHale, AP.

In: Biotechnology Letters, Vol. 19, No. 4, 04.1997, p. 385-387.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Removal of uranium from solution using residual brewery yeast: Combined biosorption and precipitation

AU - Riordan, C

AU - Bustard, M

AU - Putt, R

AU - McHale, AP

PY - 1997/4

Y1 - 1997/4

N2 - Whilst unwashed preparations of biomass from a local brewery had an apparent maximum biosorption capacity for uranium of 360 mg/g (dry weight biomass) washing reduced this maximum to 150 mg/g. Homogenization of both biomass preparations and recovery of cellular debris had no significant effect on the maximum biosorption capacities although at lower equilibrium concentrations of uranium differences in the biosorption capacities were detected. When unwashed biomass was retained by a semi-permeable membrane 40% of uranium used in the experiments precipitated outside that membrane. Therefore a significant proportion of the uranium removed from solution, and previously attributed to biosorption by the yeast biomass, resulted from precipitation brought about by interaction with low molecular weight components loosely associated with the biomass.

AB - Whilst unwashed preparations of biomass from a local brewery had an apparent maximum biosorption capacity for uranium of 360 mg/g (dry weight biomass) washing reduced this maximum to 150 mg/g. Homogenization of both biomass preparations and recovery of cellular debris had no significant effect on the maximum biosorption capacities although at lower equilibrium concentrations of uranium differences in the biosorption capacities were detected. When unwashed biomass was retained by a semi-permeable membrane 40% of uranium used in the experiments precipitated outside that membrane. Therefore a significant proportion of the uranium removed from solution, and previously attributed to biosorption by the yeast biomass, resulted from precipitation brought about by interaction with low molecular weight components loosely associated with the biomass.

U2 - 10.1023/A:1018367304767

DO - 10.1023/A:1018367304767

M3 - Article

VL - 19

SP - 385

EP - 387

JO - Biotechnology Letters

T2 - Biotechnology Letters

JF - Biotechnology Letters

SN - 0141-5492

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