کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4414998 | 1307733 | 2007 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Effective removal of coordinated copper from wastewater using a new dithiocarbamate-type supramolecular heavy metal precipitant Effective removal of coordinated copper from wastewater using a new dithiocarbamate-type supramolecular heavy metal precipitant](/preview/png/4414998.png)
A new dithiocarbamate-type heavy metal precipitant, sodium 1,3,5-hexahydrotriazinedithiocarbamate (HTDC), was prepared and used to remove coordinated copper from wastewater. In the reported dithiocarbamate-type precipitants, HTDC possesses the highest percentage of the effective functional groups. It could effectively precipitate copper to less than 0.5 mg l−1 from both synthetic and actual industrial wastewater containing CuEDTA in the range of pH 3–9. UV–vis spectral investigation and elemental analysis suggested that the precipitate was a kind of coordination supramolecular compound, [Cu3(HTDC)2]n. The toxicity characteristic leaching procedure (TCLP) and semi-dynamic leaching test (SDLT) indicated that the supramolecular precipitate was non-hazardous and stable in weak acid and alkaline conditions. Tests of an anion exchange resin D231 provided a clue to simultaneously remove excess HTDC and residual CuEDTA in practical process of wastewater treatment.
Journal: Chemosphere - Volume 69, Issue 11, November 2007, Pages 1783–1789