OLS : Record

RECORD NUMBER: 6 OF 7

Main Title

Sorption of Heavy Metals by the Soil Fungi 'Aspergillus niger' and Mucor rouxii.

Author

Mullen, M. D.; Wolf, D. C.; Beveridge, T. J.; Bailey., G. W.;

CORP Author

Environmental Research Lab., Athens, GA. ;Tennessee Univ. at Martin. ;Arkansas Univ., Fayetteville. Dept. of Agronomy. ;Guelph Univ. (Ontario). Dept. of Microbiology.

Publisher

c1992

Year Published

1992

Report Number

EPA/600/J-92/155;

Stock Number

PB92-179811

Subjects

Heavy metals; Sorption; Soil microorganisms; Land pollution; Fungi; Cells(Biology); Immobilization; Biomass; Electron microscopy; Microbiology; Silver; Lanthanum; Inorganic salt; X ray analysis; Chemical bonds; Colloids; Isotherms; Cadmium; Copper; Reprints; Aspergillus niger; Mucor rouxii

Holdings

Library		Call Number	Additional Info	Location	Date Modified
NTIS		PB92-179811	Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.	NTIS	08/22/1992

Collation

Abstract

Sorption of the nitrate salts of cadmium(II), copper(II), lanthanum(III) and silver(I) by two fungi, Aspergillus niger and Mucor rouxii, was evaluated using Freundlich adsorption isotherms and energy dispersive X-ray electron microscopy. The linearized Freundlich isotherm described the metal sorption data well for metal concentrations of 5 microM-1 mM metal. Differences in metal binding were observed among metals, as well as between fungal species. Calculated Freundlich K values indicated that metal binding decreased in the order La(3+) > or = Ag(+) > Cu(2+) > Cd(2+). However, sorption of Ag(+) was greater than that of La(3+) from solutions of 0.1 and 1 mM metal and likely due to precipitation at the cell wall surface. At the 1 mM initial concentration, there were no significant differences between the two fungi in metal sorption, except for Ag(+) binding. At the 5 microM concentration, there was no difference between the fungi in their sorption capacities for the four metals. Electron microscopy-energy dispersive X-ray analysis indicated that silver precipitated onto cells as colloidal silver. The results indicate that Freundlich isotherms may be useful for describing short-term metal sorption by fungal biomass and for comparison with other soil constituents in standardized systems. (Copyright (c) 1992 Pergamon Press plc.)

Supplementary Notes

Pub. in Soil Biology and Biochemistry, v24 n2 p129-135 Feb 92. Prepared in cooperation with Tennessee Univ. at Martin, Arkansas Univ., Fayetteville. Dept. of Agronomy, and Guelph Univ. (Ontario). Dept. of Microbiology.

NTIS Title Notes

Journal article.

Title Annotations

Reprint: Sorption of Heavy Metals by the Soil Fungi 'Aspergillus niger' and Mucor rouxii.

Category Codes

68; 57K; 57B; 99F

NTIS Prices

PC A02/MF A01

Primary Description

600/01

Document Type

Control Number

217730757

Cataloging Source

NTIS/MT

Origin

NTIS

Type

CAT

OLS : Record

RECORD NUMBER: 6 OF 7

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