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231223s2010 xx |||||o 00| ||eng c |
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|a 10.1016/j.wasman.2009.10.016
|2 doi
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|a pubmed24n0644.xml
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|a (DE-627)NLM193117274
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|a (NLM)19944584
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|a DE-627
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|e rakwb
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|a eng
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1 |
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|a Arickx, S
|e verfasserin
|4 aut
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|a Effect of carbonation on the leaching of organic carbon and of copper from MSWI bottom ash
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|c 2010
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 01.07.2010
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|a Date Revised 01.12.2018
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright (c) 2009 Elsevier Ltd. All rights reserved.
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|a In Flanders, the northern part of Belgium, about 31% of the produced amount of MSWI bottom ash is recycled as secondary raw material. In view of recycling a higher percentage of bottom ash, a particular bottom ash fraction (Ø 0.1-2mm) was studied. As the leaching of this bottom ash fraction exceeds some of the Flemish limit values for heavy metals (with Cu being the most critical), treatment is required. Natural weathering and accelerated carbonation resulted in a significant decrease of the Cu leaching. Natural weathering during 3 months caused a decrease of Cu leaching to <50% of its original value, whereas accelerated carbonation resulted in an even larger decrease (to ca. 13% of its initial value) after 2 weeks, with the main decrease taking place within the first 48 h. Total organic carbon decreased to ca. 70% and 55% of the initial concentration in the solid phase, and to 40% and 25% in the leachate after natural weathering and after accelerated carbonation, respectively. In the solid material the decrease of the Hy fraction was the largest, the FA concentration remained essentially constant. The decrease of FA in the leachate can be attributed partly to an enhanced adsorption of FA to Fe/Al (hydr)oxides, due to the combined effect of a pH decrease and the neoformation of Al (hydr)oxides (both due to carbonation). A detailed study of adsorption of FA to Fe/Al (hydr)oxides showed that significant adsorption of FA occurs, that it increases with decreasing pH and started above pH 12 for Fe (hydr)oxides and around 10 for Al (hydr)oxides. Depending whether FA or Hy are considered the controlling factor in enhanced Cu leaching, the decreasing FA or Hy in the leachate explains the decrease in the Cu leaching during carbonation
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Carbon
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|a 7440-44-0
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|a Copper
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|a 789U1901C5
|2 NLM
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|a fulvic acid
|2 NLM
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|a De Borger, V
|e verfasserin
|4 aut
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|a Van Gerven, T
|e verfasserin
|4 aut
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|a Vandecasteele, C
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Waste management (New York, N.Y.)
|d 1999
|g 30(2010), 7 vom: 25. Juli, Seite 1296-302
|w (DE-627)NLM098197061
|x 1879-2456
|7 nnns
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|g volume:30
|g year:2010
|g number:7
|g day:25
|g month:07
|g pages:1296-302
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|u http://dx.doi.org/10.1016/j.wasman.2009.10.016
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