El-Dars, F. S., Sayed, A.-E. O., Salah, B. A., & Shalabi, M. E. (2011). Removal of Nickel (II) from Aqueous Solution Via Carbonized date Pits and Carbonized Rice Husks. Eurasian Chemico-Technological Journal, 13(3-4), 267–277. https://doi.org/10.18321/ectj217