Adsorpsi Malachite Green Menggunakan Karbon Aktif dari Kulit Manggis: Optimasi dengan BBD-RSM

Ariani, Latifa (2023) Adsorpsi Malachite Green Menggunakan Karbon Aktif dari Kulit Manggis: Optimasi dengan BBD-RSM. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Karbon aktif dari kulit manggis telah berhasil disintesis pada penelitian ini dengan aktivator asam sulfat. Karbon aktif yang telah disintesis diuji kemampuan adsorpsinya terhadap pewarna malachite green dengan metode batch. Limbah cair pewarna malachite green memberikan dampak buruk bagi lingkungan karena bersifat toksik dan non-biodegradable. Optimasi parameter adsorpsi dilakukan menggunakan pemodelan RSM (response surface methodology) dengan desain eksperimen Box-Behnken. Karbon aktif hasil sintesis dikarakterisasi dengan instrumen FTIR dan SEM. Hasil karakterisasi FTIR mengkonfirmasi adanya gugus sulfonat (-SO3H) dalam karbon aktif yang menunjukkan bahwa proses aktivasi dengan asam sulfat berhasil dilakukan. Hasil karakterisasi SEM menunjukkan bahwa karbon aktif yang telah disintesis memiliki morfologi pori. Optimasi dilakukan untuk tiga parameter adsorpsi, yaitu waktu kontak (20, 60, dan 120 menit), massa adsorben (5, 25, dan 50 mg), serta konsentrasi awal larutan malachite green (5, 50, dan 100 mg/L). Penurunan konsentrasi larutan malachite green diuji dengan spektrofotometer UV-Vis pada panjang gelombang maksimal, yaitu 618 nm. Hasil optimasi adsorpsi malachite green oleh karbon aktif kulit manggis berada pada kondisi waktu kontak 80 menit, massa adsorben 32 mg, dan konsentrasi awal malachite green 25 mg/L, dengan persentase adsorpsi maksimum sebesar 93,66%.
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Active carbon from mangosteen peel has been successfully synthesized in this research using sulfuric acid as the activator. The synthesized active carbon was tested for its adsorption capability towards malachite green dye using a batch method. Malachite green dye wastewater has a negative impact on the environment due to its toxic and non-biodegradable nature. The optimization of the adsorption parameters was carried out using response surface methodology (RSM) with a Box-Behnken experimental design. The synthesized active carbon was characterized using FTIR and SEM instruments. The FTIR characterization confirmed the presence of sulfonic acid groups (-S03H) in the active carbon, indicating the successful activation process with sulfuric acid. The SEM characterization revealed that the synthesized active carbon possessed a porous morphology. Optimization was conducted for three adsorption parameters: contact time (20, 60, and 120 minutes), adsorbent mass (5, 25, and 50 mg), and initial concentration of malachite green solution (5, 50, and I 00 mg/L). The decrease in malachite green solution concentration was tested using a UV-Vis spectrophotometer at a maximum wavelength of 618 nm. The results of the malachite green adsorption optimization by mangosteen peel active carbon were obtained under the following conditions: contact time of 80 minutes, adsorbent mass of 32 mg, and initial malachite green concentration of 25 mg/L, with a maximum adsorption percentage of93.66%.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Adsorpsi, Karbon Aktif, Malachite Green, Kulit Manggis, Asam Sulfat.
Subjects:	Q Science > QA Mathematics > QA279 Response surfaces (Statistics). Analysis of covariance. Q Science > QD Chemistry > QD547 Flocculation, precipitation, adsorption, etc.
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47201-(S1) Undergraduate Thesis
Depositing User:	Latifa Ariani
Date Deposited:	08 Sep 2023 00:48
Last Modified:	08 Sep 2023 00:48
URI:	http://repository.its.ac.id/id/eprint/103481

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