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Synthesis activated carbon from shell of Elaeis guineensis Jacq and modified with magnetite (AC-Fe3O4) as adsorbent for waste metal ion Pb(II) in waters

引用

AIP Conference Proceedings 2024年第1期2970卷

作者： A. S. Zulaicha Buhani A. R. Nuralita A. Setiajaya Cosmetic Engineering Study Program Faculty of Sciences Sumatera Institute of Technology Jl. Terusan Ryacudu Way Huwi Jati Agung South Lampung 35365 Indonesia Department of Chemistry Faculty of Mathematics and Natural Sciences University of Lampung Jl. Sumantri Brojonegoro No 1 Bandar Lampung Lampung 34154 Indonesia Environmental Engineering Study Program Faculty of Sciences Sumatera Institute of Technology Jl. Terusan Ryacudu Way Huwi Jati Agung South Lampung 35365 Indonesia

In this study, the manufacture of palm shell activated carbon was obtained from PT Inti Sentosa Alam Bahtera (ISAB) Lampung. The content of cellulose is quite large, namely 45% and hemicellulose 26%, which causes this oil palm shell to be used as a basic material for making activated carbon. This study proposes to modify activated carbon using magnetite (AC-Fe3O4). Modified physical-chemical activated carbon is exhausted as an adsorbent which has the advantage of facilitating the filtration or separation process with the adsorbate. The adsorbent test used an adsorbate in the form of heavy metal ions Pb(II). The XRD characterization of AC-Fe3O4 has intensity peaks at 2θ at 30, 35, 43, and 56° which are consistent with the XRD pattern of magnetite. SEM-EDX characterization was also carried out to see differences in morphology and elemental composition between unmodified activated carbon and AC-Fe3O4. Then the external range analysis was carried out using the BET (surface area) method. As well as identification of the amount of metal ions Pb(II) adsorbed using Atomic Absorption Spectrophotometry (AAS). The test results on the adsorbent (AC-Fe3O4) were carried out at the optimum variation, namely the adsorbent dose of 0.1 grams, contact time of 120 minutes, and at a dilution of 300 mg/L. Based on the zeta potential, the pH of PZC was obtained, namely 6 as the pH of the adsorbate solution with a Q value (number of Pb(II) ions adsorbed) of 6.175 mg/g. Adsorption isotherms tend to follow the pattern of Freundlich adsorption isotherms.

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