Open AccessSeparation/enrichment of Nickel(II) using Potassium Bromide-PAN-Phenolphthalein System
Author(s) -
Wen Xi,
Changqing Tu
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/647/1/012089
Subject(s) - nickel , phenolphthalein , microcrystalline , chemistry , bromide , potassium bromide , inorganic chemistry , adsorption , metal , potassium , organic chemistry , crystallography
Separation/enrichment of nickel( II) using potassium bromide-PAN-phenolphthalein system is reported. Various factors affecting the separation/enrichment of nickel( II) are studied, the separation/enrichment of nickel( II) mechanism is deduced. The results show that by contolling pH 6.0, the chelate precipitate of Ni( II)- PAN formed form nickel( II) and PAN could be adsorbed on the surface of microcrystalline phenolphthalein to form liquid-solid phases with a clear interface under the best conditions, while Mn 2+ , Zn 2+ , Al 3+ , Cu 2+ and Cd 2+ are not adsorbed in this condition. So, the separation of Ni 2+ form these metal ions is achieved. The method for the separation/enrichment of trace nickel is established. This method was applied to the quantitative separation/enrichment of trace Ni 2+ in synthetic water, and the results are satisfactory.