WASET
    Mohd F. Taha and  Chong F. Kiat and  Maizatul S. Shaharun and  Anita Ramli,  Removal of Ni(II), Zn(II) and Pb(II) ions from Single Metal Aqueous Solution using Activated Carbon Prepared from Rice Husk.   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    December 2011, vol. 60(12). 855 - 860
    [viewed 04 May 2024]. Available from: https://publications.waset.org/pdf/9089.