CD Skripsi

Sintesis Hidrogel Berbasis Selulosa Dari Kulit Batang Sagu (Metroxylon Sagu) Untuk Adsorpsi Zat Warna Anionik Reactive Orange 16

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Hydrogel is a three-dimensional network structure composed of hydrophilic polymer chains cross-linked through physical, chemical, or polymerization processes. Hydrogel can be synthesized from a natural polymer, cellulose, derived from the bark of the sago palm (Metroxylon sagu). Cellulose was isolated from sago palm bark through delignification and bleaching processes. Cellulose needs to undergo cationic modification to enhance its adsorption capacity for the anionic dye reactive orange 16 (RO16) using triethylenetetramine (TETA). This study aims to determine the optimal adsorption capacity for trapping RO16 and evaluate the reusability of the hydrogel. This hydrogel is synthesized through a free radical polymerization reaction. The best TETA volume variation for each hydrogel variant, specifically 2,5; 2, and 1,5 mL of TETA, was determined by optimizing pH, adsorbate concentration, and contact time. The characterization of the hydrogel variants was analyzed using FTIR, SEM, and BET. The yield of cellulose isolation from sago palm bark was 49,92%. The hydrogel with the highest adsorption capacity was the 2 mL TETA variant (63,5322 mg/g) at pH 2, adsorbate concentration of 400 ppm, and contact time of 120 minutes. The reuse of the 2 mL TETA variant hydrogel achieved an average reuse efficiency of 97,38%. FTIR results showed no characteristic functional groups of lignin and hemicellulose, indicating that lignin and hemicellulose were successfully removed from the cellulose. SEM-EDX results indicated that the 2 mL TETA variant hydrogel had a porous surface before adsorption, and these pores were covered by the dye after adsorption; the elements present in the 2 mL TETA variant hydrogel were C, O, N, Na, Si, and S. BET results showed that the surface area of the 2 mL TETA variant hydrogel before adsorption was 1,1240 m²/g. The adsorption isotherm model followed the Langmuir adsorption isotherm (R² = 0,9969), indicating homogeneous and monolayer adsorption. The adsorption kinetics followed pseudo-second-order adsorption kinetics (R² = 0,9975), indicating a chemical adsorption mechanism.

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

2003113839

Penerbit

Pekanbaru : Universitas Riau FMIFA Kimia., 2024

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

2003113839

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

mardiah

Versi lain/terkait

Lampiran Berkas

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