Abstract:
The existence of Cadmium (Cd) metal waste in aquatic environment could impact
negative effect to the environment, especially to the human health. Cd metal poisoning
could damage the body’s physiological systems, and even death. To solve this problem,
wastewater treatment method was needed in accordance with the kind of the waste.
Given the dangers posed by heavy metals to organisms and the environment, efforts
are needed to reduce the concentration of heavy metal ions in liquid waste by
adsorption method using elephant grass as the adsorbent. Elephant grass contained
high cellulose that the active group content could attract and bind heavy metals. This
research aimed at knowing the capability of elephant grass adsorbent in adsorbing Cd
metal based on the variation of adsorbent (0.5; 1.0; 1.5; and 2.0 gram) with batch
method. Flame Atomic Absorption Spectrometry analysis showed that the adsorption
capability of elephant grass adsorbent increased as the increase of adsorbent. The
efficiency of the highest decline of Cd Metal in Wastewater was 96.63% at 2 g
adsorbents. The efficiency of average decline of Cd metal in wastewater was 96.11%.
