S. Tangjuank and  N. Insuk  and  J. Tontrakoon  and  V. Udeye,  Adsorption of Lead(II) and Cadmium(II) Ions from Aqueous Solutions by Adsorption on Activated Carbon Prepared from Cashew Nut Shells.   journal   = {International Journal of Chemical and Molecular Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2009, vol. 28(4). 221 - 227
    [viewed 11 May 2024]. Available from: https://publications.waset.org/pdf/10191.