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Start Over Author "Pei-pei, Huang" Publisher elsevier bv
3 results on '"Pei-pei, Huang"'

3. Determination and application of the solubility product of metal xanthate in mineral flotation and heavy metal removal in wastewater treatment

Author

Qi Shen, Pei-Pei Huang, Liuming Wu, Zhong-Xi Sun, and Yunhui Zhang

Subjects
chemistry.chemical_classification, Mechanical Engineering, Metal ions in aqueous solution, Inorganic chemistry, 02 engineering and technology, General Chemistry, Solubility equilibrium, 021001 nanoscience & nanotechnology, Geotechnical Engineering and Engineering Geology, Chemical reaction, 020501 mining & metallurgy, Metal, chemistry.chemical_compound, 0205 materials engineering, chemistry, Control and Systems Engineering, Ionic strength, visual_art, visual_art.visual_art_medium, Xanthate, Solubility, 0210 nano-technology, Alkyl
Abstract

The reactions of ethyl and butyl xanthates with Pb2+, Cd2+ and Zn2+ were investigated to determine the solubility products of metal xanthates using UV/Visible spectroscopic method and software WinSGW and MEDUSA. The effects of solution pH, chemical reactions and ionic strength on the determination of solubility products of metal xanthates were investigated. For a given metal, the solubility product of metal xanthate was found to decrease with the increase of the carbon chain length of the alkyl group. The determined solubility products of metal xanthates were in the order of ZnX2 > CdX2 > PbX2 and M(EX)2 > M(BX)2. The accurate Ksp constant allowed more accurate calculation of the minimal concentration of xanthate ions for treating heavy metal-containing waste water to selectively separate metal ions, avoiding the potential presence of toxic xanthates in the treated water.

Published
2018

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