| dc.description.abstract | Bagasse has a cellulose content of 35.01%. Where the very high cellulose
content has the potential as activated carbon. Activated carbon is used as an
adsorbent for heavy metals. The purpose of this study was to see the effect of
bagasse activated carbon in reducing heavy metal levels with variations in
combustion temperatures of 300 o C, 400 o C, and 500 o C with a contact time
adsorption of 120 minutes and see the percentage decrease in heavy metal levels of
Iron (Fe) and Chromium (Cr) before and after the addition of bagasse activated
charcoal and commercial activated charcoal. The experiment was carried out on a
laboratory scale using the static adsorption method ( batch) . Characterization was
carried out on activated charcoal using an X-Ray Diffraction (XRD) tool. The
samples used were directly taken from the residents' borehole water located in Naga
Jaya 1 Village, Bandar Huluan District, Serbelawan Simalungun Regency and
preserved with HNO 3(p) until pH < 2 then the sample was destroyed. Metal
concentrations of Iron (Fe) and Chromium (Cr) were determined using Atomic
Absorption Spectrophotometer (AAS) with specific wavelengths, namely Fe = 248.3 nm and
Cr = 357.9 nm before and after adsorption. The results showed that the concentration
of iron (Fe) and Chromium (Cr) in the borehole water after the addition of bagasse
activated charcoal decreased. Bagasse activated charcoal with variations in
combustion temperatures of 300 0 C, 400 0 C, and 500 0 C within 2 hour absorbs iron
(Fe) by 87.18%, 81.83%, and 83.05% and absorbs chromium metal. (Cr) of 96.86%,
99.45%, and 99.35%. Meanwhile, commercial activated charcoal absorbs 45.49%
iron (Fe) and 99.56% chromium (Cr) metal. The conclusion from the results of this
study showed that the effectiveness of the percentage (%) reduction of iron (Fe) and
chromium (Cr) by using bagasse activated carbon with a combustion temperature
variation of 300 o C was greater and more effective. | en_US |
