Study on Flotation Separation of Mercury (II) by sodium chloride- potassium iodide-octadecyl trimethyl ammonium chloride system
- DOI
- 10.2991/ifeesm-15.2015.19How to use a DOI?
- Keywords
- mercury (II),flotation separation,potassium iodide,octadecyl trimethyl ammonium chloride
- Abstract
The flotation separation behaviours of mercury (II) by sodium chloride-potassium iodide-octadecyl trimethyl ammonium chloride system were studied.The effects of different parameters,such as the dosages of KI and octadecyl trimethyl ammonium chloride(OTMAC),vari- ous salts and acidity etc. on the flotation yield of Hg2+ have been investigated.The results showed that by controlling pH 3.0, in the presence of 0.5 g NaCl,when 0.10 mol/L KI was 0.20 mL and 0.0050 mol/L OTMAC solution was 0.50 mL respectively, the formed water-insoluble ternary association complex of (OTMAc)2(HgI4) floated above water phase and liquid-solid phases were formed with clear interface,Hg2+ was floated quantitatively.While Zn2+,Fe3+,Ni2+,Mn2+,Co2+ and Cu2+ could not be floated in this condition.Therefore, the quantitative separation of Hg2+ from these metal ions could be achieved without any masking agent. A new method of flotation separation of trace mercury was established.The proposed method has been successfully applied to the flotation separation of Hg2+ in the sample of synthetic water and the flotation yield was 95.5%~96.5%.
- Copyright
- © 2015, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Xinrong Wen AU - Changqing Tu PY - 2015/09 DA - 2015/09 TI - Study on Flotation Separation of Mercury (II) by sodium chloride- potassium iodide-octadecyl trimethyl ammonium chloride system BT - Proceedings of the 2015 International Forum on Energy, Environment Science and Materials PB - Atlantis Press SP - 91 EP - 95 SN - 2352-5401 UR - https://doi.org/10.2991/ifeesm-15.2015.19 DO - 10.2991/ifeesm-15.2015.19 ID - Wen2015/09 ER -