Studi Aktivasi secara Fisika dan Kimia untuk Meningkatkan Kapasitas Adsorpsi CO2 pada Biogas oleh Arang Tempurung Kelapa Menggunakan Kolom

Prawidha, Rakha (2021) Studi Aktivasi secara Fisika dan Kimia untuk Meningkatkan Kapasitas Adsorpsi CO2 pada Biogas oleh Arang Tempurung Kelapa Menggunakan Kolom. Sarjana thesis, Universitas Brawijaya.


Penelitan ini dilakukan denga tujuan mengetahui kemampuan adsorben karbon aktif dari arang tempurung kelapa yang diaktivasi secara fis-kim dalam meningkatkan kapasitas adsorpsi karbon dioksida (CO2) pada biogas. Penelitian dilakukan pemurniaan biogas secara kontinyu pada sebuah kolom adsorpsi menggunakan adsorben karbon aktif tempurung kelapa dengan tujuan untuk mengurangi kadar CO2 pada biogas. Proses adsorpsi dilakukan dengan lima variasi adsorben (fisikia, kimia, kim-fis, fis-kim dan tidak teraktivasi) untuk mengetahui kapasitas adsorpsi maksimal dan menggunakan laju alir 0,5 L/menit. Penelitian ini menggunakan uji kadar CH4 dan CO2 yang di uji setiap 10 menit hingga 140 menit. Dari penelitian ini diperoleh nilai kapasitas adsoprsi terbesar yaitu pada karbon aktif dengan aktivasi secara kimia-fisika yaitu sebesar 0,0209 mol CO2/gr adsorben. Kemampuan adsorben karbon aktif dari arang tempurung kelapa yang diaktivasi secara kim-fis dapat meningkatkan kapasitas adsorpsi CO2 pada biogas yaitu 3,2 kali lebih besar dari pada karbon dari tempurung kelapa yang tidak teraktivasi. Nilai tersebut lebih besar daripada adsorben kimia dan fisika yang meningkat sebesar 2,44 dan 1,78 kali dari adsorben tidak teraktivasi.

English Abstract

Biogas is one of renewable energy that is starting to be developed. It is produced from the decomposition process of organic materials by microorganisms in anaerobic conditions. The biogas composition produced in general has a methane content composition around 40-75%, carbon dioxide impurities around 15-50% and the rest are other impurities such as nitrogen, hydrogen, hydrogen sulfide, and water. In biogas, carbon dioxide (CO2) is a pollutant with the highest concentration compared to other impurities, so it needs to be eliminated or reduced if you want to get biogas with high methane (CH4) content and good combustion heat. There are many methods to reduce carbon dioxide (CO2) in biogas, and one of them is using the adsorption process. Adsorption is the event of adsorption of a substance on the surface of a solid / adsorbent. This research uses activated carbon from coconut shell as an adsorbent in the adsorption of CO2 from biogas. Coconut shell charcoal needs to be activated before being used as an adsorbent. This activation aims to clean impurity mineral compounds from activated carbon so that they have a large area and form new functional groups so that they can absorb CO2 more optimally. The independent variable in this study was the carbon activation in Chemistry-Physics, Physics-Chemistry, Chemistry, Physics and not activated carbon. Physical activation using heating at a temperature of 300oC for 1 hour and chemical activation using 1M NaOH solution. The adsorption process took place at room temperature with a mass of activated carbon used as much as 500 grams. The results showed that the initial content of biogas was 60.79% CH4 and 39.21% CO2. Chemical-physical adsorbent is able to adsorb CO2 up to 1.038%. The CO2 adsorption capacity of chemically-physically activated adsorbent is higher than that of other activated carbon adsorbents, where the adsorption capacity value is 0.0209 mol CO2/gr Adsorbent. The adsorption ability of the chemical-physical adsorbent increased by 3.2 times that of the unactivated adsorbent. This value is greater than that of chemical and physical adsorbents which increased by 2.44 and 1.78 times that of the unactivated adsorbent.

Other obstract


Item Type: Thesis (Sarjana)
Identification Number: 660
Uncontrolled Keywords: Adsorpsi, Biogas, CO2, Karbon Aktif, NaOH, Pemanasan, Adsorption, Biogas, CO2, Activated Carbon, NaOH, Heating
Subjects: 600 Technology (Applied sciences) > 660 Chemical engineering and related technologies
Divisions: Fakultas Teknik > Teknik Kimia
Depositing User: Unnamed user with username gaby
Date Deposited: 21 Oct 2021 02:08
Last Modified: 23 Feb 2022 07:53
Restricted to Registered users only until 31 December 2023.

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