The Origin of Aluminum Flocs in Polluted Streams-Reference-Cited by-同舟云学术

The Origin of Aluminum Flocs in Polluted Streams

Published:2002-09-27 Issue:5590 Volume:297 Page:2245-2247
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Furrer Gerhard¹,Phillips Brian L.²,Ulrich Kai-Uwe³,Pöthig Rosemarie⁴,Casey William H.⁵

Affiliation:

1. Institute of Terrestrial Ecology, Eidgenössische Technische Hochschule Zürich, Grabenstrasse 3, CH-8952 Schlieren, Switzerland.

2. Department of Geosciences, State University of New York, Stony Brook, NY 11794–2100, USA.

3. Technical University of Dresden, Ecological Station Neunzehnhain, D-09514 Lengefeld, Germany.

4. Leibniz Institute of Freshwater Ecology and Inland Fisheries, Müggelseedamm 310, D-12587 Berlin, Germany.

5. Department of Land, Air, and Water Resources and Department of Geology, University of California, Davis, CA 95616, USA.

Abstract

About 240,000 square kilometers of Earth's surface is disrupted by mining, which creates watersheds that are polluted by acidity, aluminum, and heavy metals. Mixing of acidic effluent from old mines and acidic soils into waters with a higher pH causes precipitation of amorphous aluminum oxyhydroxide flocs that move in streams as suspended solids and transport adsorbed contaminants. On the basis of samples from nine streams, we show that these flocs probably form from aggregation of the ɛ -Keggin polyoxocation AlO 4 Al 12 (OH) 24 (H 2 O) 12 7+ (aq) (Al 13 ), because all of the flocs contain distinct Al(O) 4 centers similar to that of the Al 13 nanocluster.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference31 articles.

1. Nordstrom D. K., Geochim. Cosmochim. Acta 46, 681 (1982).

2. ___, Ball J. W., Science 232, 54 (1986).

3. Ulrich K.-U., Pöthig R., Acta Hydrochim. Hydrobiol. 28, 313 (2000).

4. R. W. Smith J. D. Hem U.S. Geol. Surv. Water Supply Pap. 1827-D (1972).

5. P. M. Bertsch D. R. Parker in The Environmental Chemistry of Aluminum G. Sposito Ed. (CRC Press Boca Raton FL ed. 2 1996) pp. 117–168.

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