Browsing by Author "Sari, Yupita Yeni Puspita"

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    BIOSORBEN ARANG KULIT KAYU JABON PUTIH (Anthocephalus cadamba Miq.) UNTUK ADSORPSI ION LOGAM TIMBAL(II)
    (Elfitra, 2023-11) Sari, Yupita Yeni Puspita; Hanifah, T. Abu
    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.