Putri Amalia Zahrai, - (2024) SINTESIS, KARAKTERISASI DAN UJI KINERJA MIXED MATRIX MEMBRANES PVDF/MIL-101(Cr)/GO UNTUK PEMISAHAN GAS CO2. S1 thesis, Universitas Pendidikan Indonesia.
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Abstract
Kadar CO2 pada atmosfer meningkat dalam beberapa tahun terakhir dan mengakibatkan kenaikan suhu permukaan bumi. Peningkatan emisi CO2 dalam jumlah besar dapat menjadi ancaman bagi keberlangsungan mahkluk hidup di bumi, seperti perubahan iklim, pelelehan es di kutub, dan bencana alam. Teknologi membran pemisahan gas dapat menjadi solusi dan inovasi terbarukan untuk mengurangi emisi CO2 yang efektif karena luas permukaan yang tinggi, desain yang ringkas, kemudahan fabrikasi dan perawatan, dan efektivitas biaya. Teknologi membran pemisahan gas dapat menjadi solusi dan inovasi terbarukan untuk mengurangi emisi CO2. Penelitian ini bertujuan untuk mengetahui kondisi optimum sintesis, karakteristik dan kinerja membran matriks campuran berbasis PVDF/MIL-101(Cr)/Graphene Oksida. Sintesis membran dilakukan melalui metode casting pada pelat kaca dan inversi fasa Non-Solvent Induced Phase Separation (NIPs) dengan komposisi optimum PVDF 15% : MIL-101(Cr) 0,2% : GO 0,1%. Hasil sintesis kemudian dikarakterisasi melalui FTIR, SEM-EDX, uji hidrofilisitas, uji porositas, tensile strength, point of zero charge (PZC) dan pengukuran ketebalan membran. Uji kinerja dilakukan dengan mengukur permeabilitas CO2 serta selektivitasnya terhadap CO2/N2 dan CO2/CH4. Hasil penelitian menunjukkan bahwa MMMs memiliki ketebalan 0,075 mm dengan penampakkan fisik membran berwarna putih menjadi abu-abu seiring dengan penambahan konsentrasi GO. Keberhasilan penyisipan MIL-101(Cr) dan GO pada matriks PVDF ditunjukkan dengan pergeseran pada puncak serapan dan munculnya interaksi khas pada spektra FTIR untuk vibrasi Cr-O, C=O dan O-H. Selain itu, penambahan filler MIL-101(Cr)/GO juga meningkatkan hidrofilisitas (penurunan nilai sudut kontak dari 88o hingga 83o), persen porositas (37% hingga 51%), tensile strength (7,0 MPa menjadi 8,6 MPa), point of zero charge (pH 7,78 menjadi pH 8,16) dan ukuran pori rata-rata cross-section (1,447 μm menjadi 2,118 μm) serta surface-area (0,105 μm menjadi 0,217 μm). Uji kinerja menunjukkan bahwa permeabilitas CO2 dan selektivitas MMMs terhadap CO2/CH4, dan CO2/N2 adalah 892,8 GPU (umpan single gas); 1,33; dan 1,77, secara berturut-turut. Lebih lanjut, permeabilitas dan selektivitas MMMs terhadap CO2 dan CO2/CH4 adalah 745 GPU (umpan mixture gases) dan 1,05. CO2 levels in the atmosphere have increased in recent years and resulted in an increase in the Earth's surface temperature. Large increases in CO2 emissions can pose a threat to the survival of living things on earth, such as climate change, polar ice melting, and natural disasters. Gas separation membrane technology can be a renewable solution and innovation to reduce CO2 emissions effectively due to its high surface area, compact design, ease of fabrication and maintenance, and cost-effectiveness. Gas separation membrane technology can be a renewable solution and innovation to reduce CO2 emissions. This study aims to determine the optimum conditions of synthesis, characteristics and performance of PVDF/MIL-101(Cr)/Graphene Oxide-based mixed matrix membranes. Membrane synthesis was carried out through casting method on glass plate and Non-Solvent Induced Phase Separation (NIPs) phase inversion with optimum composition of PVDF 15%: MIL-101(Cr) 0.2%: Graphene Oxide 0.1%. The synthesis results were then characterized through FTIR, SEM-EDX, hydrophilicity test, porosity test, tensile strength, point of zero charge (PZC) and membrane thickness measurement. Performance tests were conducted by measuring CO2 permeability and selectivity to CO2/N2 and CO2/CH4. The results showed that MMMs had a thickness of 0.075 mm with the physical appearance of the membrane being white to gray along with the addition of GO concentration. The successful insertion of MIL-101(Cr) and GO in the PVDF matrix is indicated by the shift in absorption peaks and the appearance of typical interactions in the FTIR spectra for Cr-O, C=O and O-H vibrations. In addition, the addition of MIL-101(Cr)/GO filler also increased the hydrophilicity (decreased contact angle value from 88o to 83o), porosity percent (37% to 51%), tensile strength (7.0 MPa to 8.6 MPa), point of zero charge (pH 7.78 to 8.16) and average pore size cross-section (1.447 μm to 2.118 μm) and surface-area (0.105 μm to 0.217 μm). Performance tests showed that the CO2 permeability and selectivity of MMMs to CO2/CH4, and CO2/N2 were 892.8 GPU (single gas feed); 1.33; and 1.77, respectively. Furthermore, the permeability and selectivity of MMMs to CO2 and CO2/CH4 are 745 GPU (mixed gases feed) and 1.05, respectively.
| Item Type: | Thesis (S1) |
|---|---|
| Additional Information: | https://scholar.google.com/citations?view_op=list_works&hl=en&user=oky_sr4AAAAJ&gmla=AC6lMd8IxHrmGCWcaE_IpeVpuVfk3434J-ywqJB8Fp5MgiLLDEgR9z7TvddPQ64GZK8VfhqC37VUWqdG-3q-dplxXP_h_jS5nOdqkqZ3ug ID SINTA Dosen Pembimbing: Fitri Khoerunnisa: 258263 Mita Nurhayati: 6745947 |
| Uncontrolled Keywords: | Kata kunci: Mixed Matrix Membranes, PVDF/MIL-101(Cr)/GO, karakteristik, permeabilitas, pemisahan CO2/CH4 Keywords: Mixed Matrix Membranes, PVDF/MIL-101(Cr)/GO, characteristics, permeability, CO2/CH4 separation |
| Subjects: | Q Science > QD Chemistry T Technology > T Technology (General) |
| Divisions: | Fakultas Pendidikan Matematika dan Ilmu Pengetahuan Alam > Jurusan Pendidikan Kimia > Program Studi Kimia (non kependidikan) |
| Depositing User: | Putri Amalia Zahrai |
| Date Deposited: | 12 Sep 2024 02:37 |
| Last Modified: | 12 Sep 2024 02:37 |
| URI: | http://repository.upi.edu/id/eprint/124380 |
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