TITLE

Long-term stability of KEtX/Cu(OH)2 matrix in landfill leachates

AUTHOR(S)
Chen, Z.-J.; Chang, J.-E.; Chang, Y.-K.; Lin, T.-T.; Ko, M.-S.
PUB. DATE
July 1999
SOURCE
Water Science & Technology;1999, Vol. 39 Issue 10/11, p131
SOURCE TYPE
Periodical
DOC. TYPE
Article
ABSTRACT
In this study, the long-term stability of KEtX/Cu(OH)2 matrix under early-period and late-period landfill leachates was evaluated using semi-dynamic leaching test (SDLT), X-ray diffractometer (XRD) and fourier transform infrared (FTIR) techniques. The results of SDLT after 60-day periods of extraction indicated that the cumulative leaching of Cu was only 0.72% and 3.34% of the total Cu in the KEtX/Cu(OH)2 matrix under early-period and late-period landfill leachates, respectively. The investigation of crystallinity and functional groups between the leached KEtX/Cu(OH)2 matrices after 1-day and 60-day periods of extraction using XRD and FTIR indicated that the KEtX/Cu(OH)2 matrices were perfectly unaffectedby the extraction using early-period and late-period landfill leachates during the 60-day leach time. Consequently, the KEtX/Cu(OH)2 matrix had a stabilizing behavior extracted in landfill leachates.
ACCESSION #
8405938

 

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