CD Skripsi

Optimasi Dosis Adsorben Dan Ph Larutan Pada Penjerapan Logam Cd(Ii) Menggunakan Adsorben Serbuk Kulit Kayu

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Acacia bark (Acacia crassicarpa) contains high levels of lignin and cellulose, making it a potential material for use as a powdered adsorbent. Acacia bark powder was utilized as an adsorbent in the adsorption process of Cd(II). This study aimed to determine the optimal adsorption efficiency and capacity of acacia bark powder in the removal of Cd(II) using adsorbent dose and pH as parameters. The method employed in this study was batch adsorption of Cd(II), using various adsorbent dosages (0.1, 0.3, 0.5, 0.7, 0.9, 2.5, and 3.5 g) and solution pH levels (2, 4, 6, 8, and 10). Acacia bark powder was characterized in accordance with SNI 06-3730-1995 to determine the iodine adsorption value. Surface morphology was characterized using SEM-EDS, functional groups were identified using FTIR, and surface area, pore volume, and pore size were analyzed using BET analysis. Preliminary characterization showed that the adsorbent exhibited an iodine adsorption capacity of 239.8918 mg/g. SEM-EDS analysis revealed that the initial surface elements of the adsorbent included C, N, O, Al, K, Ca, Mn, and Fe. After the adsorption process, Cd was detected on the surface, and Fe, which was initially present, was no longer observed. FTIR spectra indicated that most of the functional groups on the adsorbent surface experienced shifts before and after adsorption. Furthermore, a new functional group, O–Cd, appeared at a wavenumber of 518.87 cm⁻¹ after adsorption, indicating successful interaction between Cd(II) and oxygen-containing groups on the adsorbent surface. According to BET analysis, the adsorbent surface exhibited mesoporous characteristics, as evidenced by the average pore diameter of 379 Å. The optimal conditions for adsorbent dosage and pH were achieved at 3.5 g and pH 8, respectively, resulting in an adsorption efficiency of 98.81% and an adsorption capacity of 1.3763 mg/g. Based on the results of this study, it was concluded that acacia bark powder (Acacia crassicarpa) possessed a high capability for adsorbing Cd(II) ions across variations in adsorbent dosage and pH.

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

2103112884

Penerbit

Pekanbaru : Universitas Riau FMIPA Kimia., 2025

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

2103112884

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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