CD Skripsi

Uji Selektivitas Penjerapan Ion Logam Berat Seng(Ii) Dan Kromium(Iii) Dalam Campuran Menggunakan Biosorben Tandan Kosong Kelapa Sawit (Elaeis Guineensis Jacq.) Teraktivasi Naoh

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Empty fruit bunches (EFB) of oil palm (Elaeis guineensis Jacq.) are an agricultural waste with potential to be utilized as activated carbon for heavy metal adsorption. The cellulose content within EFB serves as a carbon source, whose effectiveness can be enhanced through an activation process. In this study, activation was carried out using 0.1 M NaOH solution to increase the number of active sites and enlarge the adsorption surface area.This research aims to examine the adsorption competition between Zinc(II) and Chromium(III) ions in a mixed solution using activated carbon derived from oil palm EFB. The method used was batch adsorption with variations in adsorbent dose (0.25; 0.5; 1.0; 1.5; and 2.0 g) and contact time
(30; 45; 60; 75 minutes). Surface characterization of the biosorbent was conducted using SEM, while functional group identification was performed through FTIR analysis. The iodine and methylene blue adsorption capacities were tested based on the Indonesian National Standard (SNI) No.06-3730-1995. Meanwhile, the concentrations of Zinc(II) and Chromium(III) before and after adsorption were analyzed using ICP-OES. The kinetic models analyzed included the pseudo-first- order and pseudo-second-order models. Based on the experimental data, the optimal adsorbent dose was found to be 1.0 g, with the best contact time at 60 minutes. Under these conditions, the adsorption efficiency and capacity for Zn²⁺ were 95.98% and 4.5926 mg/g, respectively, while for Cr³⁺ they were 96.86% and 4.6858 mg/g. The adsorption kinetics followed the pseudo-second-order model, with R² = 0.9968 and a rate constant of 0.0739 g/mg·min for Zn²⁺, and R² = 0.9996 with a rate constant of 0.0396 g/mg·min for Cr³⁺. These results indicate that the activated carbon from oil palm EFB is more effective in adsorbing Cr³⁺ ions than Zn²⁺, suggesting that chromium ions exhibit stronger competitive behavior in a mixed metal solution system.

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

2103112888

Penerbit

Pekanbaru : Universitas Riau FMIPA Kimia., 2025

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

2103112888

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

Mutia

Versi lain/terkait

Lampiran Berkas

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