Wijaya, Putu Adhi Rama and Wardani, Ratri Puspita (2018) Pengurangan CO2 dalam Biogas Menggunakan Kolom Gelembung Ca(OH)2 secara Kontinyu. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Biogas adalah energi hasil konversi dari limbah limbah organik yang dapat membentuk gas metana dapat dijadikan sebagai energi alternatif. Secara umum biogas mengandung CO2 cukup besar yang menyebabkan penurunan nilai kalori dan timbulnya korosi pada alat sehingga perlu dilakukan purifikasi. Dalam penelitian ini, biogas yang dihasilkan reaktor biogas di Dusun Podorejo, Desa Sajen, Kecamatan Pacet, Kabupaten Mojokerto dimurnikan dengan dilewatkan melalui larutan Ca(OH)2 dalam reaktor kolom gelembung secara kontinyu dan menghasilkan Precipitated Calcium Carbonate (PCC). Penelitian ini menggunakan dua jenis gas yaitu CO2 murni dan biogas. Penggunakan gas CO2 murni bertujuan untuk mengetahui performa penyerapan CO2 dalam kolom gelembung. Pengaruh laju alir gas, laju alir larutan Ca(OH)2, tinggi larutan dalam kolom, dan konsentrasi larutan terhadap penyerapan CO2 dan konversi Ca(OH)2 akan dipelajari dalam penelitian ini. Larutan Ca(OH)2 dengan konsentrasi 2,295-3,825 gram/liter dialirkan dengan laju alir 200-400 mL/menit ke dalam kolom gelembung pada ketinggian 50-80 cm kemudian biogas dialirkan melalui distributor pada laju alir 0,5-0,9 liter/menit. PCC yang terbentuk diendapkan, disaring, dan dikeringkan. Analisa XRF menunjukkan bahwa komposisi utama pada PCC yang dihasilkan adalah 99,425% CaCO3. Penyerapan CO2 dalam biogas paling tinggi terdapat dengan laju alir 0,5 liter/menit, laju alir larutan Ca(OH)2 400 mL/menit, tinggi larutan 80 cm, dan konsentrasi 3,825 gram/liter. Sedangkan konversi Ca(OH)2 dalam biogas paling tinggi terdapat dengan laju alir 0,5 liter/menit, laju alir larutan Ca(OH)2 200 mL/menit, tinggi larutan 80 cm, dan konsentrasi 3,825 gram/liter. Penyerapan CO2 dengan biogas memiliki presentase lebih tinggi dari CO2 murni. Sedangkan konversi Ca(OH)2 dengan biogas memiliki persentase lebih rendah dari CO2 murni.
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Biogas is the energy as the result of conversion from organic waste that form methane gas which can be used as alternative energy. In general, biogas contains large amount of CO2 which can decrease the caloric value and form the corrosion in equipments so it needs to be purified. In this study, biogas produced by biogas reactor in Dusun Podorejo, Desa Sajen, Kecamatan Pacet, Kabupaten Mojokerto was purified by passing through Ca(OH)2 solution in bubble column reactor continuously and producing Precipitated Calcium Carbonate (PCC). This research uses two types of gas that is pure CO2 and biogas. The pure CO2 gas aims to determine the performance of CO2 absorption in bubble columns. The effect of gas flow rate, the flow rate of Ca(OH)2 solution, the height of the solution in the column, and the concentration of the solution to CO2 absorption and Ca(OH)2 conversion will be studied in this research. Ca(OH)2 solution with concentration of 2,295-3,825 gram/liter was flowed at a flow rate of 200-400 mL/min into bubble column at 50-80 cm height then biogas was flowed through the distributor at a flow rate of 0,5-0,9 liters/minute. The formed PCC is precipitated, filtered, and dried. XRF analysis showed that the main composition of PCC produced was 99,425% CaCO3. The highest absorption of CO2 in biogas was found at 0,5 liter/min flow rate, 400 mL/min flow rate of Ca(OH)2 solution, 80 cm height, and 3,825 gram/liter concentration. While the highest conversion of Ca(OH)2 in biogas was found at 0,5 liter/min flow rate of gas, 200 mL/min flow rate of Ca(OH)2 solution, 80 cm solution, and 3,825 gram/liter concentration. The absorption of CO2 with biogas has a higher percentage than the pure CO2. Meanwhile, the Ca(OH)2 conversion with biogas has a lower percentage than the pure CO2.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSK 665.776 Wij p-1 3100018076201 |
| Uncontrolled Keywords: | Biogas, Kolom gelembung, Penyerapan CO2, Larutan Ca(OH)2, Precipitated Calcium Carbonate (PCC), Biogas, Bubble column, CO2 absorption, Ca(OH)2 solution |
| Subjects: | T Technology > TD Environmental technology. Sanitary engineering > TD195.B56 Biomass energy T Technology > TP Chemical technology > TP248 Nanogels. Nanoparticles. T Technology > TP Chemical technology > TP359 Biogas |
| Divisions: | Faculty of Industrial Technology > Chemical Engineering > 24201-(S1) Undergraduate Thesis |
| Depositing User: | Ratri Puspita Wardani |
| Date Deposited: | 14 Feb 2019 07:42 |
| Last Modified: | 20 Nov 2020 06:00 |
| URI: | http://repository.its.ac.id/id/eprint/53937 |
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