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All Journal Jurnal Ilmiah WUNY Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Rekayasa Mesin Journal of Environmental Engineering and Sustainable Technology International Journal of Mechanical Engineering Technologies and Applications (MECHTA) Jurnal Polimesin
Purnami Purnami
Brawijaya University
Humanities Automotive Engineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health

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Biosurfactant-Assisted Hydrogen Evolution: Effects of Sapindus Rarak Extract on Alkaline Electrolysis Performance Santoso, Mardi; Sinurat, David Fernando; Ahmad, Anton Royanto; Hamidi, Nurkholis; Purnami, Purnami
Jurnal Rekayasa Mesin Vol. 17 No. 1 (2026)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v17i1.2151

Abstract

Hydrogen production through alkaline water electrolysis is a promising pathway for clean energy generation, yet its efficiency is often limited by gas bubble accumulation on electrode surfaces. This study explores the use of a natural surfactant derived from Sapindus rarak (lerak) as a green additive to improve hydrogen evolution reaction (HER) performance. Experimental results show that the natural surfactant-enhanced system achieved a 135% increase in cumulative hydrogen yield over 10 minutes. Mechanistically, the natural surfactant lowered the surface tension, reduced bubble nucleation size, and promoted faster detachment from the electrode surface, thereby preserving catalytic activity. Compared to synthetic surfactants like sodium lauryl sulfate, Sapindus rarak offers advantages in natural degradability, environmental safety, and regional availability. This study demonstrates that natural plant-based surfactants can serve as effective, eco-friendly enhancers in electrochemical hydrogen production. The results provide a foundation for integrating natural surfactants into scalable and sustainable green hydrogen systems.
Co-Authors Agung Sugeng Widodo Akbar, Dekrit H. Anggara, Teuku Anton Royanto Ahmad ARDIANSYAH ARDIANSYAH Daroini, Ahmad Najih Denny Widhiyanuriyawan Dewi, Fransisca Gayuh Utami Dhimas Nur Cahyadi Dina Novera Serfandi Esiliy , Rehab Ragay Faiz, Naufal Muhammad I Nyoman Gede Wardana ING Wardana ING. Wardana, ING. Lilis Yuliati Mardi Santoso Mas'ud, Sifa'ul Mega Nur Sasongko Mohamad, Effendi Bin Nurkholis Hamidi Nurkholis Hamidy Oyong Novareza Paepenan, Semuel Poumer Putu Hadi Setyarini Rahmadanti, Rahmadanti Schulze, Ajani Aiman Schulze, Klauss Serfandi, Dina Novera Sinurat, David Fernando Siswahyudianto Slamet Wahyudi Sugeng Prayitno Budio Sulaiman, Abdul Mudjib Sulistyono Sulistyono Sulistyono Sulistyono Syahputra, Hogi Veronika K, Veronika Wardhani, Angelia Kusuma widya wijayanti Willy Satrio Nugroho Yepy Komaril Sofi’i Yusuf, M Umar