Abdillah, Riko Ferdinand (2025) OPTIMALISASI LIMBAH TEMPURUNG SIWALAN SEBAGAI ADSORBEN DALAM MEREDUKSI EMISI GAS CO, HC, DAN NOx PADA KENDARAAN BERMOTOR. Undergraduate thesis, Universitas Pembangunan Nasional "Veteran" Jawa Timur.
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Abstract
Incomplete combustion of fossil fuels in motor vehicle engines produces various harmful pollutants, including carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxides (NOx). Therefore, efficient treatment or reduction technologies are needed to ensure that these emission parameters do not pose risks to public health. The best adsorbent was obtained through activation using a 25% Na₂CO₃ solution, yielding maximum removal efficiencies in the initial minutes of 56.93% (CO), 79.54% (HC), and 36.96% (NOx). Mass variation tests showed that the 100-gram adsorbent had the highest adsorption stability up to the 120th minute, with removal efficiencies of 18% (CO), 45.6% (HC), and 38.40% (NOx), confirming that increasing adsorbent mass enhances adsorption capacity and resistance to saturation. Based on the Thomas model, the maximum adsorption capacity reached 959.87 mg/g at a mass of 100 grams. Kinetic analysis indicated that the process followed the Pseudo First-Order model, suggesting that adsorption occurred physically through Van der Waals forces. Morphological observations showed that the pores of the activated carbon were covered by particles resulting from adsorption, indicating direct interaction with the gas emissions. Overall, siwalan shell–based activated carbon proves to be an affordable, effective, and promising adsorbent for reducing vehicle emissions, especially from older motor vehicles.
| Item Type: | Thesis (Undergraduate) | ||||||||
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| Subjects: | T Technology > TD Environmental technology. Sanitary engineering | ||||||||
| Divisions: | Faculty of Engineering > Departement of Environmental Engineering | ||||||||
| Depositing User: | Riko Ferdinand Abdillah | ||||||||
| Date Deposited: | 02 Dec 2025 07:52 | ||||||||
| Last Modified: | 02 Dec 2025 08:24 | ||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/47200 |
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