Sari, Sinta Eka Septa (2023) Optimasi Pemanfaatan Bentonit Teraktivasi H2SO4 sebagai Adsorben Pewarna Methyl Green Menggunakan Response Surface Methodology (RSM)-Box Behnken Design (BBD). Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Penelitian ini mempelajari optimasi proses adsorpsi limbah pewarna sintetis methyl green (MG) menggunakan adsorben bentonit yang diaktivasi dengan H2SO4. Bentonit aktivasi yang diperoleh dikarakterisasi menggunakan X-Ray Diffraction (XRD), X-Ray Fluoroscence (XRF), Fourier Transformed Infrared (FTIR), dan Adsorpsi-Desorpsi N2 untuk mengetahui sifatnya. Pola XRD menunjukkan puncak khas pada 2θ = 5,78°; 19,69°; 35,58°; 50,21° dan sudah sesuai dengan JCPDS (Joint Commitee on Powder Defraction Standar). Hasil ini menunjukkan bahwa bentonit alam yang digunakan dalam penelitian ini adalah lempung smektit yang mengandung mineral utama montmorillonit. Hal ini didukung oleh hasil XRF yang menunjukkan bahwa komponen utama penyusun bentonit adalah SiO2 dan Al2O3 dengan komposisi masing-masing sebesar 54,82% dan 21,67%. Spektra FTIR menunjukkan bahwa aktivasi bentonit menggunakan H2SO4 tidak mengubah karakteristik gugus fungsi pada bentonit. Luas permukaan bentonit mengalami peningkatan setelah dilakukan aktivasi dari 61,0446 m2/g menjadi 76,8964 m2/g. Optimasi dilakukan dengan menggunakan pendekatan Response Surface Methodology (RSM) dengan desain Box Behnken Design (BBD) model kuadratik tiga level. Faktor eksperimen yang dianalisis berupa dosis adsorben (X1), waktu kontak (X2), dan konsentrasi awal adsorbat (X3). Kondisi optimum untuk menghasilkan persen removal tertinggi adalah dengan mencampurkan 25 mL limbah sintetis MG dengan konsentrasi awal 60 mg/L dan 12,5 mg bentonit aktivasi selama 60 menit. Bentonit aktivasi dapat mengadsorpsi MG dengan persentase removal sebesar 97,802% dan kapasitas adsorpsi sebesar 117,363 mg/g. Pada penelitian ini juga dilakukan karakterisasi sebelum dan sesudah digunakan untuk adsorpsi MG menggunakan analisis FTIR. Penggunaan bentonit aktivasi H2SO4 terbukti mampu untuk mengadsorpsi MG dengan efektif sehingga dapat dijadikan sebagai alternatif untuk menangani permasalahan limbah pewarna MG pada lingkungan.
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This research studied the optimization of the adsorption process of methyl green (MG) synthetic dye waste using bentonite adsorbents activated with H2SO4. The activated bentonite obtained was characterized using X-Ray Diffraction (XRD), X-Ray Fluoroscence (XRF), Fourier Transformed Infrared (FTIR) and N2 Adsorption-Desorption to determine its properties. The XRD pattern shows typical peaks at 2θ = 5,78°; 19,69°; 35,58°; 50,21° and is in accordance with the JCPDS (Joint Committee on Powder Defraction Standards). These results indicate that the natural bentonite used in this study is smectite clay which contains the main mineral montmorillonite. This is supported by the XRF results which show that the main components of bentonite are SiO2 and Al2O3 with a composition of 54,82% and 21,67%, respectively. FTIR spectra show that activation of bentonite using H2SO4 does not change the characteristics of functional groups in bentonite. The bentonite surface area increased after activation from 61,0446 m2/g to 76,8964 m2/g. Optimization was carried out using the Response Surface Methodology (RSM) approach with the Box Behnken Design (BBD) three-level quadratic model. The experimental factors analyzed were the adsorbent dose (X1), contact time (X2), and the initial concentration of the adsorbate (X3). The optimum condition to produce the highest joint removal is by mixing 25 mL of MG synthetic waste with an initial concentration of 60 mg/L and 12,5 mg bentonite activation for 60 minutes. Activated bentonite can adsorb MG with a removal proportion of 97,802% and an adsorption capacity of 117,363 mg/g. In this study, characterization was also carried out before and after use for MG adsorption using FTIR analysis. The use of H2SO4 activated bentonite has been shown to be able to adsorb MG effectively so that it can be used as an alternative to dealing with the problem of MG dye waste in the environment.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Adsorpsi, Aktivasi, Bentonit, Methyl Green, RSM-BBD; Adsorption, Activation, Bentonite, Methyl Green, RSM-BBD. |
| 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: | Sinta Eka Septa Sari |
| Date Deposited: | 18 Sep 2023 09:45 |
| Last Modified: | 18 Sep 2023 09:45 |
| URI: | http://repository.its.ac.id/id/eprint/104050 |
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