Optimasi Adsorpsi Malachite Green Dengan Karbon Aktif Daun Bidara Arab Menggunakan Response Surface Methodology-Central Composite Design

Ardiyanti, Annisa (2024) Optimasi Adsorpsi Malachite Green Dengan Karbon Aktif Daun Bidara Arab Menggunakan Response Surface Methodology-Central Composite Design. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Karbon aktif telah dibuat dari biomassa daun Bidara Arab untuk adsorpsi pewarna. Pewarna tekstil yang langsung dibuang ke lingkungan tanpa adanya pengolahan terlebih dahulu dapat menyebabkan pencemaran lingkungan, salah satunya adalah Malachite Green. Oleh karena itu diperlukan teknik pengolahan limbah untuk mengurangi konsentrasi limbah pewarna. Adsorpsi merupakan salah satu metode untuk menurunkan kadar pewarna dan dianggap sebagai metode yang efektif karena sederhana serta tidak membutuhkan banyak biaya. Parameter yang digunakan dalam penelitian ini adalah waktu kontak (60; 90; 120 menit), massa adsorben (10; 25; 50 mg), dan konsentrasi pewarna (100; 200; 300 mg/L). Pada penelitian ini, digunakan optimasi dengan metode Response Surface Methodology jenis Face Centered Composite Central Design. Optimasi RSM digunakan karena dapat mengetahui respon seluruh parameter secara simultan. Karbon aktif daun Bidara Arab dikarakterisasi dengan FTIR, XRD, FESEM, dan BET untuk mengetahui informasi permukaan adsorben. Hasil adsorpsi diuji absorbansinya dengan spektrofotometer UV-Vis. Kondisi optimum adsorpsi yang diperoleh yaitu waktu kontak 120 menit, dosis adsorben 50 mg, dan konsentrasi awal larutan 100 mg/L dengan persentase removal mencaoai 99,037%. Studi isoterm menunjukkan tipe isoterm pada penelitian ini adalah Langmuir dengan nilai R2 sebesar 0,9625
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Activated carbon has been made from Ziziphus spina-christi leaves for adsorption. Textile dyes that are directly discharged into the environment without prior processing can cause environmental pollution, one of them is Malachite Green. Therefore, waste treatment techniques are needed to reduce the concentration of dye waste. Adsorption is a method for reducing dye levels, considered as an effective method because its simplicity and low cost. The parameters used in this study are contact time (60; 90; 120 min), adsorbent mass (10; 25; 50 mg), and dye concentration (100; 200; 300 mg/L). In this study, the optimization used is Response Surface Methodology-Face Centered Composite Central Design type. RSM optimization is used because it can determine the response of all parameters simultaneously. The activated carbon of Ziziphus spina-christi leaves will be characterized by FTIR, XRD, FESEM, and BET to find out the surface information of the adsorbent. Adsorption results were analyzed using spectrophotometer UV-Vis. The optimum conditions obtained were contact time 120 min, adsorbent dosage of 50 mg, and initial solution concentration of 100 mg/L with a removal percentage reaching 99.037%. The isotherm study shows that the isotherm type in this study is Langmuir with an R2 of 0.9625.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	adsorpsi, central composite design, response surface methodology, malachite green, ziziphus spina-christi; adsorption, central composite design, response surface methodology, malachite green, ziziphus spina-christi
Subjects:	Q Science Q Science > QD Chemistry Q Science > QD Chemistry > QD251.2 Chemistry, Organic. Biochemistry Q Science > QD Chemistry > QD481 Chemical structure. Q Science > QD Chemistry > QD547 Flocculation, precipitation, adsorption, etc. Q Science > QD Chemistry > QD75.2 Chemistry, Analytic
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47101-(S2) Master Thesis
Depositing User:	Annisa Ardiyanti
Date Deposited:	29 Jan 2024 07:17
Last Modified:	29 Jan 2024 07:17
URI:	http://repository.its.ac.id/id/eprint/105717

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