Optimasi Adsorpsi Metilen Biru Menggunakan Karbon Aktif Dari Kulit Manggis (Garcinia Mangostana L.) Dengan BBD-RSM

Hernanda, Rasikha Alifah (2023) Optimasi Adsorpsi Metilen Biru Menggunakan Karbon Aktif Dari Kulit Manggis (Garcinia Mangostana L.) Dengan BBD-RSM. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penelitian terkait optimasi adsorpsi metilen biru menggunakan karbon aktif dari kulit manggis teraktivasi asam sulfat (H₂SO₄) telah berhasil dilakukan. Parameter adsorpsi yang digunakan pada penelitian ini didesain dengan Box Behnken-Design (BBD) untuk mengetahui nilai prosentase pengurangan kadar metilen biru serta interaksi antara variasi variabel uji yang digunakan yaitu massa adsorben (25, 100, dan 150 mg), pH (3, 7, dan 10), waktu kontak (30, 60, dan 100 menit), dan konsentrasi awal metilen biru (20, 100, dan 200 mg/L). Sedangkan hubungan antara prosentase pengurangan metilen biru dengan variasi variabel pengujian dioptimasi dengan analisis Response Surface Methodology (RSM). Pada penelitian ini juga dilakukan karakterisasi adsorben karbon aktif kulit manggis sebelum dan sesudah adsorpsi dengan FTIR dan bentuk morfologi karbon aktif kulit manggis sebelum adsorpsi dengan SEM. Perubahan kadar metilen biru sebelum dan sesudah adsorpsi diukur dengan spektrofotometer UV-Vis. Prosentase pengurangan kadar metilen biru pada kondisi optimal pada penelitian ini berlangsung pada variasi massa adsorben sebesar 95-110 mg; pH pada kondisi asam 3 – 5,8 dan pH pada kondisi basa 8,2 – 9,2; waktu kontak selama 30-40 menit; dan konsentrasi awal metilen biru sebesar 125-198 mg/L. Berdasarkan rentang daerah optimum adsorpsi tersebut, dipilih titik optimum yang berada pada rentang daerah optimum untuk mendapatkan prosentase pengurangan MB. Titik optimum pengurangan MB dipilih pada waktu kontak 35 menit; pH 8,5; massa adsorben 100 mg;dan konsentrasi awal MB 150 mg/L. Dari titik optimum yang dipilih, didapatkan nilai prosentase pengurangan kadar metilen biru mencapai 99,82%. Karbon aktif kulit manggis teraktivasi asam sulfat (H₂SO₄) terbukti dapat mengurangi kadar metilen biru dengan efektif sehingga dapat digunakan sebagai alternatif dalam menangani limbah metilen biru pada lingkungan.
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Research related to optimization of methylene blue adsorption using activated carbon from mangosteen rind activated with sulfuric acid (H2SO4) has been successfully carried out. The adsorption parameters used in this study were designed using a Box Behnken-Design (BBD) to determine the percentage value of methylene blue content collection as well as the interaction between the various test variables used, namely adsorbent mass (25, 100, and 150 mg), pH (3, 7, and 10), contact time (30, 60, and 100 minutes), and initial concentration of methylene blue (20, 100, and 200 mg/L). Meanwhile, the relationship between the percentage reduction of methylene blue and the variation of the test variables was optimized by using Response Surface Methodology (RSM) analysis. In this study, the adsorbent characterization of mangosteen peel activated carbon was also carried out before and after adsorption by FTIR and the morphology of mangosteen peel activated carbon before adsorption by SEM. Changes in methylene blue levels before and after adsorption were measured with a UV-Vis spectrophotometer. The percentage of withdrawal of methylene blue levels under optimal conditions in this study took place at variations in the adsorbent mass of 95-110 mg; pH in acidic conditions 3 – 5.8 and pH in alkaline conditions 8.2 – 9.2; contact time for 30-40 minutes; and initial concentration of methylene blue of 125- 198 mg/L. Based on the range of the optimum adsorption area, the optimum point is selected which is in the range of the optimum area to obtain the percentage reduction of MB. The optimal point of MB withdrawal was chosen at a contact time of 35 minutes; pH 8.5; adsorbent mass 100 mg; and initial MB concentration of 150 mg/L. From the selected optimum point, the percentage reduction in methylene blue content reached 99.82%. Mangosteen peel activated carbon activated by sulfuric acid (H2SO4) has been shown to reduce methylene blue levels effectively so that it can be used as an alternative in treating methylene blue waste in the environment.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Adsorpsi, Desain Box-Behnken (BBD), Kulit Manggis, Metilen Biru, Metodologi Respon Permukaan (RSM), Adsorption, Box-Behnken Design (BBD), Mangosteen Peel, Methylene Blue, Response Surface Methodology (RSM)
Subjects:	Q Science > QD Chemistry > QD547 Flocculation, precipitation, adsorption, etc.
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47201-(S1) Undergraduate Thesis
Depositing User:	Rasikha Alifah Hernanda
Date Deposited:	31 Aug 2023 01:31
Last Modified:	31 Aug 2023 01:31
URI:	http://repository.its.ac.id/id/eprint/103341

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