Please use this identifier to cite or link to this item: https://doi.org/10.15480/882.410
Fulltext available Open Access
Title: Heavy metal removal from contaminated sludges with dissolved sulfur dioxide in combination with bacterial leaching
Language: English
Authors: Calmano, Wolfgang 
Ahlf, Wolfgang 
Förstner, Ulrich 
Issue Date: 1983
Source: International Conference Heavy Metals in the Environment, Heidelberg, September 1983, Edinburgh 1983, pp. 952-5
Abstract (english): Treatment of dredged sludge from the Hamburg harbour area with sulfurous acid (6%) shows nearly complete removal of Cd, Zn, and Mn within the first 10 minutes. Within 1 hour more than 50% of Cr, Ni, Pb and Hg are mobilized; dissolution of Cu and Fe reaches about 40%. The capability of certain bacteria (Thiobacillus thiooxidans and Thiobacillus ferrooxidans) to oxidize sulfur and ferrous iron respectively, while decreasing the pH value from 4-5 to about 2 was utilized for enhancing dissolution of metals from dredged sludge. Acidification with sulfurous acid to pH 4 and following bacterial leaching solubilized the following metal percentages from the dredged material: Cd and Co = 98%, Zn = 95%, Mn = 91%, Cu = 84%, Ni = 66%, Cr = 45%, Fe = 27% and Pb = 17 %.
URI: http://tubdok.tub.tuhh.de/handle/11420/412
DOI: 10.15480/882.410
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
S0001163.pdf190,13 kBAdobe PDFThumbnail
View/Open
Show full item record

Page view(s)

227
Last Week
0
Last month
6
checked on Sep 22, 2020

Download(s)

99
checked on Sep 22, 2020

Google ScholarTM

Check

Note about this record

Export

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