Environmental pollution caused by heavy metals is deteriorating
the environment and endangering human health. This has
become a serious problem due to the toxic properties of heavy
metals and their tendency to bio-accumulate in the food chain [1].
The presence of heavy metals in the aquatic environment is a major
concern due to their extreme toxicity. Heavy metals from
wastewater are commonly removed by chemical precipitation,
ion-exchange, membrane separation, reverse osmosis, and activated
carbon (AC) adsorption [2,3]. Adsorption has attracted much
attention as an effective purification and separation technique for
treating wastewater, and removing heavy metals from wastewater
is an important application of adsorption processes using a suitable
adsorbent [3,4]. Various adsorbents such as AC, iron oxides,
filamentous fungal biomass, zeolite, and chitosan have been
applied to remove heavy metals from wastewater. AC is generally
recognized as an effective adsorbent due to its high porosity, large
surface area, and high catalytic activity and is currently widely
used to remove organic compounds