CD Skripsi

Optimasi Dosis Adsorben Dan Ph Adsorbat Menggunakan Arang Tongkol Jagung Manis Teraktivasi Naoh Untuk Adsorpsi Zat Warna Rhodamine B

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Activated sweet corncob (Zea mays saccharata Sturt.) carbon has potential as an adsorbent material due to its large surface area and abundance of active sites, making it effective for adsorbing Rhodamine B dye. The activated carbon was activated using sodium hydroxide (NaOH), which functions to break lignin and cellulose bonds, thereby expanding the surface area and enhancing the formation of activated carbon. This study aims to determine the adsorption efficiency and capacity of Rhodamine B by evaluating adsorbent dosage and solution pH. The adsorption process was conducted in batch mode with varying adsorbent dosages (0.25, 0.50, 0.75, 1.00, and 1.25 g) and pH levels of the Rhodamine B solution (2,
4, 6, 8, and 10). Characterization of the corncob activated carbon referred to Indonesian National Standard (SNI) No. 06-3730-1995, including moisture content, ash content, and Methylene Blue adsorption capacity. Surface morphology and elemental composition were analyzed using SEM-EDS, and pore size was determined using ImageJ software. Functional groups were identified via FTIR Spectroscopy, while the point of zero charge (pHpzc) was determined to analyze the surface charge of the activated carbon. Adsorption performance for Rhodamine B was evaluated using a UV-Vis Spectrophotometer. The results showed that the optimum adsorbent dosage was 1.00 g, achieving an adsorption efficiency of 93.77% and an adsorption capacity of 2.3925 mg/g. The optimum pH was 6, with an efficiency of 96.06% and a capacity of 2.3693 mg/g. The pHpzc value was found to be 5.6. SEM-EDS analysis revealed that the dominant elements before and after activation were C, O, and K. Pore size analysis using ImageJ showed a decrease from 2.36 μm (before activation) to 0.83 μm (after activation). The identified functional groups before and after activation included O–H, C=O, C–O, and C=C. Based on the results, it can be concluded that adsorbent dosage and solution pH significantly affect the adsorption process, as indicated by a significant value < 0.05 in the One Way ANOVA statistical test.

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

2103135506

Penerbit

Pekanbaru : Universitas Riau FMIPA Kimia., 2025

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

2103135506

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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