Paper Title:
Sorption Profile of Hg(II) onto Mixed Phase of Copper Sulphide and Copper Sulphate
  Abstract

The use of surface oxidized covellite (CuS), namely mixed phase copper sulphide (CuS and CuSO4) was studied for the removal of mercury from aqueous solution under the effect of various reaction parameters (pH, time, Hg(II) concentration). From batch sorption studies, the equilibrium data revealed that the sorption behaviour of Hg(II) onto mixed phase copper sulphide follows well with Langmuir isotherm and the maximum sorption capacity (Qmax) determined ≈ 400mg Hg(II) /g of sorbent. Meanwhile, all the unreacted and reacted mixed phase copper sulphides were also characterized by Powder XRD, SEM and XPS techniques. The results indicated that the sorption of Hg(II) onto mixed phase copper sulphide occurs initially through the dissolution of surface oxidized CuSO4 layer. After that, the surface complexation product formed and sorbed onto the surface of CuS. These outcomes suggest the potential ability of CuS in removing Hg(II) even if the CuS layer is being surrounded by oxidized layer of CuSO4.

  Info
Periodical
Advanced Materials Research (Volumes 356-360)
Chapter
Chapter 2: Environmental Materials
Edited by
Hexing Li, Qunjie Xu and Daquan Zhang
Pages
537-546
DOI
10.4028/www.scientific.net/AMR.356-360.537
Citation
Y. L. Au Yoong, P. L. Yap, M. G. Kutty, O. Timpe, M. Behrens, S. B. A. Hamid, R. Schlögl, "Sorption Profile of Hg(II) onto Mixed Phase of Copper Sulphide and Copper Sulphate", Advanced Materials Research, Vols. 356-360, pp. 537-546, 2012
Online since
October 2011
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Price
$32.00
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