CD Skripsi

Sintesis Geopolimer Berbasis Fly Ash Batu Bara Sebagai Adsorben Zat Warna Pada Air Gambut Menggunakan Response Surface Methodology

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ABSTRACT
Peat water possesses very high color intensity due to its organic content, requiring an effective adsorption technology for its removal. Porous fly ash based geopolymers present a promising alternative because of their stable aluminosilicate structure and tunable porosity. This study focuses on synthesizing and optimizing porous geopolymers for peat water color removal using Response Surface Methodology (RSM). The investigated variables include the SiO2/Al2O3 ratio (2; 2.5; 3), SiO2/Na2O ratio (1.7; 1.9; 2.1), and H2O2 percentage (0.5%; 1%; 1.5%). A Box–Behnken Design was applied, and material characterization was performed using XRF, BET, and FTIR. The experimental optimum was obtained at SiO₂/Al₂O₃ = 2, SiO₂/Na₂O = 1.9, and H₂O₂ = 0.5%, achieving a color removal efficiency of 98.346% and an adsorption capacity of 61.84 mg/g. RSM numerical optimization predicted an efficiency of 98.401% at SiO2/Al2O3 = 2.307, SiO2/Na2O = 1.715, and H2O2 = 0.511%. BET characterization indicated significant increases in surface area, pore volume, and pore diameter after geopolymerization. Therefore, porous fly ash–based geopolymers are proven effective for reducing peat water color, although additional treatment steps are needed to meet water quality standards.
Keywords: Peat water, adsorption, geopolymer, fly ash, Response Surface Methodology (RSM)

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

2107113425

Penerbit

Pekanbaru : Universitas Riau – F.TEKNIK – lingkungan., 2025

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

2107113425

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

TEKNIK LINGKUNGAN

Info Detail Spesifik

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Pernyataan Tanggungjawab

daus

Versi lain/terkait

Lampiran Berkas

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