2018 Volume 12 Issue 3
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CHEN Hui, LU Yonggang, CHENG Dongxu, YAN Qun. Synthesis and application in wastewater of a novel type of dithiocarbamate (DTC)-based heavy metal chelating agent[J]. Chinese Journal of Environmental Engineering, 2018, 12(3): 731-740. doi: 10.12030/j.cjee.201709008
Citation: CHEN Hui, LU Yonggang, CHENG Dongxu, YAN Qun. Synthesis and application in wastewater of a novel type of dithiocarbamate (DTC)-based heavy metal chelating agent[J]. Chinese Journal of Environmental Engineering, 2018, 12(3): 731-740. doi: 10.12030/j.cjee.201709008
shu

Synthesis and application in wastewater of a novel type of dithiocarbamate (DTC)-based heavy metal chelating agent

  • 1.

    School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, China

  • 2.

    Jingjiang Heavy Metal Prevent and Control Ltd., Taizhou 224500, China

  • Accepted Date: 01/09/2017
    Available Online: 22/03/2018
    Fund Project:
  • To remove chelated heavy metals more efficiently without the addition of flocculant, a novel type of poly-ammonium dithiocarbamate (PADTC) based heavy metal chelating agent was synthesized, and the structure of which was characterized using FT-IR, NMR and element analysis as well. Effects of reaction time and pH on the removal efficiency were also investigated, it was found that at the pH of 6 and the reaction time adopted as 20 minutes, the maximum adsorption capacities for chelated Cu2+, Ni2+ and Zn2+ reached 246, 234 and 227 mg·g-1, respectively. The adsorption effect of different complexing agents was also conducted, and the removal order was confirmed as TA > CA > EDTA. Application of PADTC in the actual electroplating wastewater performed well for the removal of chelated heavy metal. The capture mechanism of PADTC for chelated heavy metals was conducted and then proposed by FT-IR, SEM-EDS and XPS characterization. Removal of chelated heavy metals from metal processing wastewater using PADTC might be of industrial potential.
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Synthesis and application in wastewater of a novel type of dithiocarbamate (DTC)-based heavy metal chelating agent

  • Accepted Date: 01/09/2017
  • Available Online: 22/03/2018
Fund Project:

Abstract: To remove chelated heavy metals more efficiently without the addition of flocculant, a novel type of poly-ammonium dithiocarbamate (PADTC) based heavy metal chelating agent was synthesized, and the structure of which was characterized using FT-IR, NMR and element analysis as well. Effects of reaction time and pH on the removal efficiency were also investigated, it was found that at the pH of 6 and the reaction time adopted as 20 minutes, the maximum adsorption capacities for chelated Cu2+, Ni2+ and Zn2+ reached 246, 234 and 227 mg·g-1, respectively. The adsorption effect of different complexing agents was also conducted, and the removal order was confirmed as TA > CA > EDTA. Application of PADTC in the actual electroplating wastewater performed well for the removal of chelated heavy metal. The capture mechanism of PADTC for chelated heavy metals was conducted and then proposed by FT-IR, SEM-EDS and XPS characterization. Removal of chelated heavy metals from metal processing wastewater using PADTC might be of industrial potential.

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