Y. Sun, et al., “Optimizing the Extraction of Phenolic Antioxidants from Kudingcha made from Ilex Kudingcha C. J. Tseng by Using Response Surface Methodology,” Separation and Purification Technology, Vol. 78, No. 3, 2011, pp. 311-320. http://dx.doi.org/10.1016/j.seppur.2011.01.038

has been cited by the following article:

• TITLE: A Statistical Method for Determining the Best Zinc Pregnant Solution for the Extraction by D2EHPA

  AUTHORS: Hossein Kamran Haghighi, Davood Moradkhani, Mohammad Mehdi Salarirad

  KEYWORDS: D2EHPA; Response Surface Methodology; Pregnant Solution; Optimization

  JOURNAL NAME: International Journal of Nonferrous Metallurgy, Vol.2 No.4, September 26, 2013

  ABSTRACT: The application of D2EHPA in zinc solvent extraction has extensive background. To utilize more effectively, response surface methodology was used to optimize the concentration condition of zinc pregnant solution (ZPL) extracted by D2EHPA. In the current research, zinc, iron and manganese extraction along with separation factor of zinc-iron (Sf (Zn-Fe)) and zinc-manganese (Sf (Zn-Mn)) were considered as the response values. The optimal ZPL conditions extracted with 30% D2EHPA as the extraction solvent were as follows: Zn 21.96 g/L, Fe 382.57 ppm, Mn 1 g/L, Sf (Zn-Fe) 8.26 and Sf (Zn-Mn) 1529.82. In addition, it was found that the iron and manganese concentration were the most effective factors affecting the zinc and manganese extraction, respectively.