STUDI EKSPERIMENTAL KARAKTERISTIK MIKROSKOPIK DAN STABILITAS ULTRAFINE BUBBLE DALAM BAHAN BAKAR BIODIESEL B35

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Diterbitkan: Agu 29, 2026
Kata Kunci:
Biodiesel B35, ultrafine bubble, karakterisasi mikroskopik, distribusi ukuran, stabilitas

Isi Artikel Utama

Husen Asbanu
Universitas Darma Persada
Sam Herodian
Tineke Mandang
Anto Tri Sugiarto
Riesta Anggarani
Ade Supriatna

Abstrak

Biodiesel B35, yang merupakan campuran 35% biodiesel dan 65% minyak solar, telah digunakan secara luas sebagai bahan bakar pada mesin diesel. Salah satu pendekatan yang dikembangkan dalam penelitian bahan bakar adalah penerapan teknologi ultrafine bubbles oksigen, yang menghasilkan gelembung gas berukuran nano di dalam media cair. Penelitian ini bertujuan menganalisis karakteristik mikroskopik ultrafine bubbles oksigen pada bahan bakar biodiesel B35 melalui pengukuran ukuran dan distribusi gelembung, stabilitas selama penyimpanan, serta zeta potensial menggunakan metode Dynamic Light Scattering dan Nanoparticle Tracking Analysis. Hasil menunjukkan peningkatan waktu injeksi oksigen menghasilkan penurunan diameter gelembung, yaitu dari 531 nm (22%) pada sampel tanpa injeksi menjadi 458 nm, 396 nm, 255 nm (17%), dan mencapai 141 nm (15%) setelah 60 menit injeksi. Selama periode penyimpanan, diameter gelembung berubah dari 342 nm (16%) pada kondisi awal menjadi 141 nm (17%) pada minggu pertama, kemudian meningkat menjadi 190 nm, 220 nm, dan kembali 342 nm (23%) pada minggu keempat, yang mengindikasikan terjadinya proses koalesensi gelembung. Analisis zeta potensial menunjukkan puncak distribusi pada -25 mV dengan 205.808 counts, yang mengindikasikan bahwa dispersi ultrafine bubbles oksigen memiliki stabilitas yang relatif baik selama periode penyimpanan. Secara keseluruhan, penelitian ini mengonfirmasi bahwa teknologi ultrafine bubbles oksigen mampu membentuk gelembung berukuran nano dengan karakteristik ukuran, distribusi, dan stabilitas yang dapat diidentifikasi melalui pengujian Dynamic Light Scattering, dan zeta potensial. Hasil penelitian ini memberikan informasi dasar mengenai karakteristik mikroskopik ultrafine bubbles oksigen pada bahan bakar biodiesel B35 sebagai landasan untuk penelitian lanjutan mengenai pengaruhnya terhadap sifat fisik bahan bakar maupun kinerja pembakaran dan emisi gas buang.

Rincian Artikel

Terbitan
Vol 16 No 1 (2026)
Bagian
Articles
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Artikel ini berlisensi Creative Commons Attribution 4.0 International License.

Biografi Penulis

Husen Asbanu, Universitas Darma Persada

Husen Asbanu merupakan pengajar dan peneliti di bidang teknik mesin yang berfokus pada pengembangan energi terbarukan, bahan bakar alternatif, sistem pembakaran, serta penerapan teknologi ultrafine bubble (UFB)/nanobubble untuk meningkatkan kualitas bahan bakar diesel dan biodiesel. Menyelesaikan pendidikan Program Doktor (S3) pada Program Studi Ilmu Keteknikan, Fakultas Teknik dan Teknologi, Institut Pertanian Bogor (IPB). Bidang kepakarannya meliputi teknologi bahan bakar, mesin pembakaran dalam, energi berkelanjutan, serta karakterisasi dan pengembangan bahan bakar berbasis teknologi ultrafine bubble.

Sam Herodian

B35 biodiesel a blend of 35% biodiesel and 65% diesel fuel—is widely used in diesel engines. One approach in fuel research involves the application of oxygen ultrafine bubble technology, which generates nano-sized gas bubbles within a liquid medium. This study aims to analyze the microscopic characteristics of oxygen ultrafine bubbles in B35 biodiesel by measuring bubble size and distribution, storage stability, and zeta potential using Dynamic Light Scattering and Nanoparticle Tracking Analysis methods. The results indicate that increasing the oxygen injection time led to a reduction in bubble diameter: from 531 nm (22%) in the non-injected sample to 458 nm, 396 nm, and 255 nm (17%), eventually reaching 141 nm (15%) after 60 minutes of injection. During the storage period, the bubble diameter shifted from 342 nm (16%) initially to 141 nm (17%) in the first week, then increased to 190 nm and 220 nm, before returning to 342 nm (23%) by the fourth week, indicating the occurrence of bubble coalescence. Zeta potential analysis revealed a distribution peak at -25 mV with 205,808 counts, suggesting that the oxygen ultrafine bubble dispersion maintained relatively good stability throughout the storage period. Overall, this study confirms that oxygen ultrafine bubble technology can generate nano-sized bubbles with size, distribution, and stability characteristics identifiable through Dynamic Light Scattering and zeta potential testing. These findings provide fundamental data on the microscopic characteristics of oxygen ultrafine bubbles in B35 biodiesel, serving as a basis for further research into their effects on fuel physical properties, combustion performance, and exhaust emissions.

Tineke Mandang

B35 biodiesel a blend of 35% biodiesel and 65% diesel fuel—is widely used in diesel engines. One approach in fuel research involves the application of oxygen ultrafine bubble technology, which generates nano-sized gas bubbles within a liquid medium. This study aims to analyze the microscopic characteristics of oxygen ultrafine bubbles in B35 biodiesel by measuring bubble size and distribution, storage stability, and zeta potential using Dynamic Light Scattering and Nanoparticle Tracking Analysis methods. The results indicate that increasing the oxygen injection time led to a reduction in bubble diameter: from 531 nm (22%) in the non-injected sample to 458 nm, 396 nm, and 255 nm (17%), eventually reaching 141 nm (15%) after 60 minutes of injection. During the storage period, the bubble diameter shifted from 342 nm (16%) initially to 141 nm (17%) in the first week, then increased to 190 nm and 220 nm, before returning to 342 nm (23%) by the fourth week, indicating the occurrence of bubble coalescence. Zeta potential analysis revealed a distribution peak at -25 mV with 205,808 counts, suggesting that the oxygen ultrafine bubble dispersion maintained relatively good stability throughout the storage period. Overall, this study confirms that oxygen ultrafine bubble technology can generate nano-sized bubbles with size, distribution, and stability characteristics identifiable through Dynamic Light Scattering and zeta potential testing. These findings provide fundamental data on the microscopic characteristics of oxygen ultrafine bubbles in B35 biodiesel, serving as a basis for further research into their effects on fuel physical properties, combustion performance, and exhaust emissions.

Anto Tri Sugiarto

B35 biodiesel a blend of 35% biodiesel and 65% diesel fuel—is widely used in diesel engines. One approach in fuel research involves the application of oxygen ultrafine bubble technology, which generates nano-sized gas bubbles within a liquid medium. This study aims to analyze the microscopic characteristics of oxygen ultrafine bubbles in B35 biodiesel by measuring bubble size and distribution, storage stability, and zeta potential using Dynamic Light Scattering and Nanoparticle Tracking Analysis methods. The results indicate that increasing the oxygen injection time led to a reduction in bubble diameter: from 531 nm (22%) in the non-injected sample to 458 nm, 396 nm, and 255 nm (17%), eventually reaching 141 nm (15%) after 60 minutes of injection. During the storage period, the bubble diameter shifted from 342 nm (16%) initially to 141 nm (17%) in the first week, then increased to 190 nm and 220 nm, before returning to 342 nm (23%) by the fourth week, indicating the occurrence of bubble coalescence. Zeta potential analysis revealed a distribution peak at -25 mV with 205,808 counts, suggesting that the oxygen ultrafine bubble dispersion maintained relatively good stability throughout the storage period. Overall, this study confirms that oxygen ultrafine bubble technology can generate nano-sized bubbles with size, distribution, and stability characteristics identifiable through Dynamic Light Scattering and zeta potential testing. These findings provide fundamental data on the microscopic characteristics of oxygen ultrafine bubbles in B35 biodiesel, serving as a basis for further research into their effects on fuel physical properties, combustion performance, and exhaust emissions.

Riesta Anggarani

B35 biodiesel a blend of 35% biodiesel and 65% diesel fuel—is widely used in diesel engines. One approach in fuel research involves the application of oxygen ultrafine bubble technology, which generates nano-sized gas bubbles within a liquid medium. This study aims to analyze the microscopic characteristics of oxygen ultrafine bubbles in B35 biodiesel by measuring bubble size and distribution, storage stability, and zeta potential using Dynamic Light Scattering and Nanoparticle Tracking Analysis methods. The results indicate that increasing the oxygen injection time led to a reduction in bubble diameter: from 531 nm (22%) in the non-injected sample to 458 nm, 396 nm, and 255 nm (17%), eventually reaching 141 nm (15%) after 60 minutes of injection. During the storage period, the bubble diameter shifted from 342 nm (16%) initially to 141 nm (17%) in the first week, then increased to 190 nm and 220 nm, before returning to 342 nm (23%) by the fourth week, indicating the occurrence of bubble coalescence. Zeta potential analysis revealed a distribution peak at -25 mV with 205,808 counts, suggesting that the oxygen ultrafine bubble dispersion maintained relatively good stability throughout the storage period. Overall, this study confirms that oxygen ultrafine bubble technology can generate nano-sized bubbles with size, distribution, and stability characteristics identifiable through Dynamic Light Scattering and zeta potential testing. These findings provide fundamental data on the microscopic characteristics of oxygen ultrafine bubbles in B35 biodiesel, serving as a basis for further research into their effects on fuel physical properties, combustion performance, and exhaust emissions.

Ade Supriatna

B35 biodiesel a blend of 35% biodiesel and 65% diesel fuel—is widely used in diesel engines. One approach in fuel research involves the application of oxygen ultrafine bubble technology, which generates nano-sized gas bubbles within a liquid medium. This study aims to analyze the microscopic characteristics of oxygen ultrafine bubbles in B35 biodiesel by measuring bubble size and distribution, storage stability, and zeta potential using Dynamic Light Scattering and Nanoparticle Tracking Analysis methods. The results indicate that increasing the oxygen injection time led to a reduction in bubble diameter: from 531 nm (22%) in the non-injected sample to 458 nm, 396 nm, and 255 nm (17%), eventually reaching 141 nm (15%) after 60 minutes of injection. During the storage period, the bubble diameter shifted from 342 nm (16%) initially to 141 nm (17%) in the first week, then increased to 190 nm and 220 nm, before returning to 342 nm (23%) by the fourth week, indicating the occurrence of bubble coalescence. Zeta potential analysis revealed a distribution peak at -25 mV with 205,808 counts, suggesting that the oxygen ultrafine bubble dispersion maintained relatively good stability throughout the storage period. Overall, this study confirms that oxygen ultrafine bubble technology can generate nano-sized bubbles with size, distribution, and stability characteristics identifiable through Dynamic Light Scattering and zeta potential testing. These findings provide fundamental data on the microscopic characteristics of oxygen ultrafine bubbles in B35 biodiesel, serving as a basis for further research into their effects on fuel physical properties, combustion performance, and exhaust emissions.