Karbon Aktif dari Kulit Manggis (Garcinia Mangostana L.) Untuk Adsorpsi Pewarna Metil Violet 2B: Optimasi dengan Box-Behnken Design

Handayani, Dewi Esti (2023) Karbon Aktif dari Kulit Manggis (Garcinia Mangostana L.) Untuk Adsorpsi Pewarna Metil Violet 2B: Optimasi dengan Box-Behnken Design. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Metil violet 2B merupakan salah satu pewarna sintetis yang menimbulkan efek negatif bagi lingkungan dan kesehatan manusia. Oleh karena itu, perlu dilakukan upaya pengurangan
konsentrasi larutan metil violet 2B dalam limbah sebelum dibuang, salah satu cara yang efektif adalah dengan adsorpsi menggunakan karbon aktif. Penelitian dilakukan untuk mengetahui kemampuan adsorpsi dari karbon aktif kulit manggis (Garcinia Mangostana L.) yang teraktivasi H2SO4. Adsorpsi pewarna sintesis metil violet 2B dilakukan dengan metode optimasi Response Surface Methodology menggunakan Box-Behnken Design. Ada empat parameter yang digunakan dalam penelitian yaitu waktu kontak (30-120 menit), massa adsorben (0,1-1 gram), konsentrasi awal larutan metil violet 2B (10-100 ppm) dan pH larutan (2-11). Spektrofotometer UV-Vis digunakan sebagai instrumen untuk mengukur absorbansi filtrat larutan metil violet 2B hasil adsorpsi pada panjang gelombang maksimum 585 nm sehingga dapat dilakukan perhitungan %removal larutan metil violet 2B yang didapatkan. Sebelum digunakan untuk adsorpsi, karbon aktif kulit manggis dikarakterisasi terlebih dahulu menggunakan FTIR untuk mengetahui gugus fungsi dan SEM untuk mengetahui gambaran permukaan karbon aktif. Kondisi optimum pada parameter waktu kontak, massa adsorben, konsentrasi awal larutan metil violet 2B dan pH yang didapatkan secara berturut-turut pada range 60-95 menit, 0,35-0,59 gram, 57-90 ppm serta pH pada kondisi asam yaitu range 2-2,5 dan pH pada kondisi basa yaitu 11. Perhitungan %removal yang didapatkan pada dua kondisi optimum yaitu dalam kondisi asam sebesar 99,80% dan dalam kondisi basa sebesar 98,33%.
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Methyl violet 2B is a synthetic dye that causes negative effects on the environment and human health. Therefore, it is necessary to reduce the concentration of methyl violet 2B solution in waste before disposal, one effective way is by adsorption using activated carbon. The research was conducted to determine the adsorption ability of activated carbon from mangosteen peel (Garcinia Mangostana L.) activated with H2SO4. Adsorption of methyl violet 2B synthetic dye was carried out with Response Surface Methodology optimization method using Box-Behnken Design. There were four parameters used in the study, namely contact time (30-120 minutes), adsorbent mass (0,1-1 gram), initial concentration of methyl violet 2B solution (10-100 ppm) and solution pH (2-11). UV-Vis spectrophotometer was used as an instrument to measure the absorbance of the filtrate of methyl violet 2B adsorption solution at a maximum wavelength of 585 nm so that the %removal of methyl violet 2B solution can be calculated. Before being used for adsorption, mangosteen peel activated carbon was first characterized using FTIR to determine the functional groups and SEM to determine the surface picture of activated carbon. Optimum conditions on the parameters of contact time, adsorbent mass, initial concentration of methyl violet 2B solution and pH were obtained successively in the range of 60-95 minutes, 0,35-0,59 g, 57-90 ppm and pH in acidic conditions in the range of 2-2,2 and pH in alkaline conditions in the range of 11. The %removal calculation obtained in the two optimum conditions is in acidic conditions of 99,80% and in alkaline conditions of 98,33%.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Adsorpsi, Box-Behnken Design, Garcinia Mangostana L., Karbon Aktif, Metil Violet 2B. Adsorption, Box-Behnken Design, Activated Carbon, Garcinia Mangostana L. Methyl Violet 2B.
Subjects:	Q Science Q Science > QD Chemistry Q Science > QD Chemistry > QD75.2 Chemistry, Analytic
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47201-(S1) Undergraduate Thesis
Depositing User:	Dewi Esti Handayani
Date Deposited:	16 Aug 2023 01:03
Last Modified:	16 Aug 2023 01:03
URI:	http://repository.its.ac.id/id/eprint/104237

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