Annur Suhadi and  Haris B. Harahap and  Zaim Arrosyidi and  Epan and  Darmapala,  Characterization of Candlenut Shells and Its Application to Remove Oil and Fine Solids of Produced Water in Nutshell Filters of Water Cleaning Plant.   journal   = {International Journal of Chemical and Molecular Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2021, vol. 169(1). 10 - 18
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/10011772.