Please use this identifier to cite or link to this item: https://doi.org/10.15480/882.449
Fulltext available Open Access
Title: Mobilization and scavenging of heavy metals following resuspension of anoxic sediments from the Elbe River
Language: English
Authors: Calmano, Wolfgang 
Förstner, Ulrich 
Hong, Jihua 
Issue Date: 1994
Source: Charles N. Alpers ... (eds.) Environmental geochemistry of sulfide oxidation, developed from a symposium, Washington, DC, August 1992, Washington, DC 1994, pp. 298-321
Abstract (english): Resuspension of sediments from the Elbe River can significantly decrease pH values due to high acid-producting potential and low neutralizing capacity. Metals can be released into the dissolved phase, but may subsequently be readsorbed or precipitated in part to solid phases. To evaluate the potential for metal release and scavenging on a regional and long-term scale, experiments were undertaken at stable neutral-pH values. Rates of total metal release and metal scavenging were extrapolated from time series of netrelease values measured over 630 hours. The order of total release from the sediment was Cd (5%) > Zn (1.5%) > Cu (1%) > Pb (0.7%). The scavenging of released metals was in the reverse order: Pb (86%) > Cu (53%) > Zn (34%) > Cd (30%). Dominant processes are adsorption on organic substances, adsorption/coprecipitation by fresh Fe-Mn oxides and precipitation of metal phosphates originating from the decomposition of organic matter. Based on our experimental results and relevant published data, a four-stage interaction model is developed for metals in anoxic sediments. This model describes the behavior of heavy metals in the system subsequent to oxidation.
URI: http://tubdok.tub.tuhh.de/handle/11420/451
DOI: 10.15480/882.449
ISBN: 0-8412-2772-1
Institute: Umwelttechnik und Energiewirtschaft V-9 
Type: InProceedings (Aufsatz / Paper einer Konferenz etc.)
License: http://doku.b.tu-harburg.de/doku/lic_ohne_pod.php
Appears in Collections:Publications with fulltext

Files in This Item:
File Description SizeFormat
S0001205.pdf846,64 kBAdobe PDFThumbnail
View/Open
Show full item record

Page view(s)

521
Last Week
0
Last month
18
checked on Oct 1, 2020

Download(s)

375
checked on Oct 1, 2020

Google ScholarTM

Check

Note about this record

Export

Items in TORE are protected by copyright, with all rights reserved, unless otherwise indicated.