Adsorpsi Pewarna Safranin-O Menggunakan Adsorben Karbon Aktif dari Kulit Manggis (Garcinia mangostana L.): Optimasi Menggunakan BBD-RSM

Azzahra, Wahda Humairah (2023) Adsorpsi Pewarna Safranin-O Menggunakan Adsorben Karbon Aktif dari Kulit Manggis (Garcinia mangostana L.): Optimasi Menggunakan BBD-RSM. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Adsorpsi merupakan metode yang paling efektif dan efisien untuk mengelola pencemaran air, seperti limbah pewarna Safranin O yang bersifat iritan dan korosif. Salah satu adsorben yang sering digunakan yaitu karbon aktif, yang mana kulit manggis dapat menjadi sumber alternatif tersebut, karena berpotensi dan dinilai ramah lingkungan. Maka dari itu, dilakukan penelitian adsorpsi pewarna Safranin O dengan kulit manggis sebagai adsorben yang teraktivasi asam sulfat. Adsorben yang didapatkan dikarakterisasi menggunakan SEM dan FTIR. Adsorben tampak seperti batuan yang tidak seragam, dengan gugus fungsi asam sulfat pada serapan 1587,20 cm-1 yang menandakan bahwa kulit manggis telah teraktivasi asam sulfat. Hasil pengujian UV-Vis digunakan untuk menentukan panjang gelombang maksimum larutan Safranin O yaitu sebesar 517 nm. Adsorpsi dilakukan melalui rancangan BBD-RSM menggunakan 4 faktor variabel dengan 3 level (-1, 0, dan 1), seperti waktu kontak (30; 60; dan 120 menit), dosis adsorben (0,1; 0,5; dan 1 g), konsentrasi awal (10; 50; dan 100 ppm), serta pH (5; 10; dan 14). Perubahan konsentrasi larutan diidentifikasi melalui filtrat yang didapatkan dengan pengujian spektrofotometer UV-Vis. Maka, adsorpsi mencapai kondisi optimum pada waktu kontak sebesar 40-50 menit, dosis adsorben sebesar 0,3-0,6 g, konsentrasi awal sebesar 70-90 ppm, dan pH sebesar 5-6, dengan persentase removal maksimum sebesar 98, 99%.
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Adsorption is the most effective and efficient method for managing water pollution, such as Safranin O dye waste which is irritant and corrosive. One of the adsorbents that is often used is activated carbon, which mangosteen shell can be an alternative source, because it has potential and is considered environmentally friendly. Therefore, a study was conducted on adsorption of the dye Safranin O with mangosteen shell as an adsorbent activated by sulfuric acid. The adsorbent obtained was characterized using SEM and FTIR. The adsorbent looks like nonuniform rock, with the sulfuric acid functional group at an absorption of 1587,20 cm-1 , which indicates that the mangosteen shell has been activated by sulfuric acid. The results of the UVVis test were used to determine the maximum wavelength of the Safranin O solution, which was 517 nm. Adsorption was carried out through the BBD-RSM design using 4 factor variables with 3 levels (-1, 0, and 1), namely contact time (30; 60; and 120 minutes), adsorbent dose (0,1; 0,5; and 1 g), initial concentration (10; 50; and 100 ppm), and pH (5; 10; and 14). Changes in solution concentration were identified through the filtrate obtained by UV-Vis spectrophotometer testing. Thus the adsorption reaches optimum conditions at contact time of 40-50 minutes, adsorbent dose of 0,3-0,6 g, initial concentration of 70-90 ppm, and pH 5-6, with a maximum removal percentage of 98,99%.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Kulit Manggis, Mangosteen Shell, Response Surface Methodology (RSM), Safranin O; Adsorpsi, Adsorption, Box Behnken Design (BBD)
Subjects:	Q Science > QA Mathematics > QA279 Response surfaces (Statistics). Analysis of covariance. Q Science > QD Chemistry > QD547 Flocculation, precipitation, adsorption, etc. Q Science > QD Chemistry > QD75.2 Chemistry, Analytic T Technology > TD Environmental technology. Sanitary engineering > TD420 Water pollution
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47201-(S1) Undergraduate Thesis
Depositing User:	Wahda Humairah Azzahra
Date Deposited:	04 Oct 2023 01:04
Last Modified:	04 Oct 2023 01:04
URI:	http://repository.its.ac.id/id/eprint/104141

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