K. Soya and N. Mihara and D. Kuchar and M. Kubota and H. Matsuda and T. Fukuta, Selective Sulfidation of Copper, Zinc and Nickelin Plating Wastewater using Calcium Sulfide. journal = {International Journal of Chemical and Molecular Engineering}, [online]. World Academy of Science, Engineering and Technology. August 2008, vol. 20(8). 182 - 186 [viewed 20 September 2024]. Available from: https://publications.waset.org/pdf/3650.