BIOSORBEN ARANG KULIT KAYU JABON PUTIH (Anthocephalus cadamba Miq.) UNTUK ADSORPSI ION LOGAM TIMBAL(II)
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Date
2023-11
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Publisher
Elfitra
Abstract
This research aims to determine the efficiency and adsorption capacity of adsorbents in
adsorbing metal ions lead(II) at optimum pH optimization, optimum contact time, and
concentration optimum adsorbate. White jabon bark in this study was converted into
charcoal through a carbonization process with variations of temperature (400℃, 500℃,
600℃, 700℃, 800℃) and time variations of carbonization (30, 60, 90, 120 minute) for
obtain the best condition of white Jabon bark charcoal which is used as lead(II) heavy
metal adsorbent. Characterization of Jabon bark charcoal adsorbent white is carried out
using an FTIR instrument, to analyze clusters functions that play a role in the adsorption
process. Use of SEM-EDS for analyzing surface morphology and determining the
elements contained therein white jabon bark powder and charcoal. The adsorbent
characterization results show water content value 1.75%, ash content 13.72%, iodine
adsorption capacity 519.12 mg/g and methylene blue adsorbed 64.7828 mg/g with a
surface area of 240.1964 m2 /g. Adsorption The optimum occurs at a pH variation of 6,
contact time of 40 minutes and initial concentration metals at 140 mgL-1 with adsorption
efficiency of 99.89% respectively; 99.88%; 99.85%. FTIR results show that there is a CH
bending functional group, C=C aromatic, C-N, C-H stretching aliphatic, C≡C, C=O
carbonyl, and N-H groups. Results SEM-EDS shows the presence of the elements O, C,
Ca, K, Mg and has a texture porous which is still covered with impurities because the
activation process has not been carried out.
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Keywords
carbonization, jabon, lead
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