Földi, Corinna (2016). Mercury in blast furnace sludge. PhD thesis, Universität zu Köln.
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Abstract
Blast furnace sludge (BFS) was analyzed for mercury (Hg) for the first time. The content ranged between 0.006 and 20.8 mg kg–1 (median: 1.63 mg kg–1) for 65 analyzed samples from seven former BFS dumpsites in Europe. Sequential ex-traction procedure on 14 of these samples revealed that Hg was mainly present in immobile fractions (> 90 %). The ecotoxically relevant fractions were not of major significance. Volatilization from BFS (mixed with basic oxygen furnace sludge) was low but significant. Mercury release increased with temperature (15 to 25 °C). However, surprisingly Hg flux at 35 °C was lower than at 25 °C. Nevertheless, BFS should be regarded as potential hazardous waste and Hg source, respectively, as Hg is bioaccumulative and is considered as one of the most important environmental pollutants.
Item Type: | Thesis (PhD thesis) | ||||||||
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URN: | urn:nbn:de:hbz:38-70314 | ||||||||
Date: | 2016 | ||||||||
Language: | English | ||||||||
Faculty: | Faculty of Mathematics and Natural Sciences | ||||||||
Divisions: | Faculty of Mathematics and Natural Sciences > Department of Geosciences > Geographisches Institut | ||||||||
Subjects: | Chemistry and allied sciences Earth sciences Geography and travel |
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Date of oral exam: | 1 December 2015 | ||||||||
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Refereed: | Yes | ||||||||
URI: | http://kups.ub.uni-koeln.de/id/eprint/7031 |
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