Olive cake used in this study was supplied by olive oil mill
from Irbid city, Jordan. This sorbent of olive cake was dried in
atmospheric environment during its disposal for almost 1 year.
Stones and other heavy particles were removed from the collection
sample. Defined weight of olive cake sample was washed
many times with hot deioniozed water and then by deionized
cooled water. This sample was dried at 100 ◦C for 24 h until no
variation in the sample weight observed. After that, the dried
sample was grounded and sieved into several size fractions,
using standard ASTM sieves. The size of the dried sample used
throughout this experiment was 100 m.
2.2. Adsorbate