CD Skripsi

Kompetisi Penjerapan Ion Logam Berat Seng(Ii) Dan Kromium(Iii) Dalam Campuran Menggunakan Biosorben Cangkang Kelapa Sawit (Elaeis Guineensis Jacq.)

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Activated charcoal of palm shell that activated with NaOH can be used as an adsorbent of heavy metal ions with quite high adsorption efficiency. In this research, i want to know the value of adsorption to a mixture of Zn2+ metal ions and Cr3+ metal ions. Activation using NaOH in this study aims to remove lignin levels from palm shells, also to expand porosity and increase active sites on palm shell biosorbents. This research aims to obtain the efficiency value of the biosorbent adsorption competition against two different metal ions, namely zinc (Zn) in the ZnCl2 compound and chromium (Cr) in the CrCl3.6H2O compound which is carried out simultaneously in the same mixture, with variations in biosorbent doses and variations in contact time between biosorbent and adsorbate. The method used in this study is the adsorption competition method, including using variations in NaOH concentration (0.05, 0.1, 0.2, and 0.3) M and dosage
variations (0.25, 0.5, 1.0, 1.5, and 2.0) g, also using variations in contact time for 30, 45, 60, and 75 minutes. To determine the results of the metal ion adsorption process with biosorbent, the Atomic Absorption Spectroscopy (AAS) characteristic test and the Fourier Transform Infrared (FTIR) characteristic test were used. The final result in the form of the optimum NaOH as an activator concentration value was obtained at 0.1 M, with the best dose of 1 g with an optimum contact time of 60 minutes, the adsorption efficiency value for single zinc metal ions was 98.12%, while for single chromium metal ions it was 98.26%. While the final result in the form of the adsorption efficiency value for mixed metal ions for competition between zinc and chromium was obtained for zinc metal ions of 92.14% and for chromium metal ions of 96.45%. So that the adsorption kinetic equation was obtained in the pseudo second order with an R2 value of 0.9992 for Zn2+ ions and 0.9798 for Cr3+ ions. The results and conclusions state that the heavy metal ion chromium(III) has a greater electronegativity strength than the zinc(II) metal ion, namely 1.66 and 1.65 respectively because in competition in the mixture, chromium(III) ions are more adsorbed.

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

2003112070

Penerbit

Pekanbaru : Universitas Riau FMIPA Kimia., 2024

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

2003112070

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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