Aplikasi Silika dari Limbah Botol Kaca sebagai Adsorben pada Adsorpsi Metilen Biru: Optimasi dengan Desain Box-Behnken

Azizah, Putri Augista Nur (2023) Aplikasi Silika dari Limbah Botol Kaca sebagai Adsorben pada Adsorpsi Metilen Biru: Optimasi dengan Desain Box-Behnken. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pada penelitian ini, silika gel dari limbah botol kaca reagen kimia dipelajari kinerjanya pada adsorpsi metilen biru. Silika gel hasil sintesis dikarakterisasi dengan XRD (X-Ray Diffraction) dan FTIR (Fourier Transform Infrared Spectroscopy). Proses adsorpsi dioptimasi dengan Desain Box-Behnken (BBD) berdasarkan Metodologi Respon Permukaan (RSM) untuk mengetahui korelasi antara respon (persentase removal) dengan variabel independen yang diamati, yaitu pH (6-10), waktu kontak (15-45 menit), massa adsorben (30-70 mg), dan konsentrasi awal adsorbat (20-80 mg/L). Kondisi optimum adsorpsi diperoleh pada daerah pH 7,5-10,0, waktu kontak mendekati 45 menit, massa adsorben 50-70 mg, dan konsentrasi awal adsorbat 20-50 mg/L dengan persentase removal 99,41%. Proses adsorpsi metilen biru pada penelitian ini mengikuti model kinetika adsorpsi orde dua semu dan isoterm Langmuir dengan kapasitas adsorpsi maksimum sebesar 82,02 mg/g.
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In this research, silica gel synthesized from chemical reagent glass bottle waste has been studied for its performance in methylene blue adsorption. The synthesized silica gel was characterized using XRD (X-Ray Diffraction) and FTIR (Fourier Transform Infrared Spectroscopy). The adsorption process was optimized using Response Surface Methodology (RSM) - Box-Behnken Design (BBD) to determine the correlation between response (removal percentage) and the independent variables, such as pH (6-10), contact time (15-45 minutes), adsorbent mass (30-70 mg), and initial concentration of adsorbate (20-80 mg/L). The optimum adsorption conditions were obtained at pH 7.5-10.0, a contact time close to 45 minutes, the adsorbent mass of 50-70 mg, and the adsorbate initial concentration of 20-50 mg/L with a removal of 99.41%. The adsorption process of methylene blue in this research followed the pseudo-second-order kinetic model and Langmuir isotherm with a maximum adsorption capacity of 82.02 mg/g.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	Limbah Botol Kaca, Silika, Adsorpsi, Metilen Biru, Desain Box-Behken, Glass Bottle Waste, Silica, Adsorption, Methylene Blue, Box-Behnken Design.
Subjects:	Q Science > QC Physics > QC162 Adsorption and absorption Q Science > QD Chemistry Q Science > QD Chemistry > QD547 Flocculation, precipitation, adsorption, etc.
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47101-(S2) Master Thesis
Depositing User:	Putri Augista Nur Azizah
Date Deposited:	01 Feb 2023 07:31
Last Modified:	01 Feb 2023 07:36
URI:	http://repository.its.ac.id/id/eprint/95981

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