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STABILITY OF NON-SURFACTANT WATER AND HYDROGEN PEROXIDE EMULSIONS IN B0 AND B35 USING INLINE MIXER Irawan, Muhammad Fariedz; Saputro, Frendy Rian; Sugeng, Dhani Avianto; Mulyana, Agus; Sukra, Kurnia Fajar Adhi; Uzair, Fakhrul Afif; Yahya, Wira Jazair; Fajar, Rizqon; Sena, Boni; Ujiburrahman, Ujiburrahman
Scientific Journal of Mechanical Engineering Kinematika Vol 11 No 1 (2026): SJME Kinematika June 2026
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v11i1.882

Abstract

Hydrogen peroxide (H2O2) enrichment is known to enhance combustion efficiency in diesel engines; however, its application as an emulsion is restricted by phase instability in the absence of chemical surfactants. This study investigates the stability and temperature characteristics of non-surfactant emulsions produced using an inline mixer known as the Real-Time Emulsion Supply System (RTES). Four emulsion types were formulated using water and aqueous H2O2 (5-15 vol%) as the dispersed phase, with neat diesel (B0) and biodiesel (B35) serving as the continuous phase: water-in-B0 (WD), H2O2-in-B0 (HD), water-in-B35 (WB), and H2O2-in-B35 (HB). The emulsions were prepared using RTES with a residence time of 180 s. During the preparation, the temperature was continuously recorded using a Graphtec GL840 data logger. The phase separation was monitored over 600 s using a Canon-EM3 camera. Results demonstrate that B35-based emulsions exhibit higher stability compared to B0-based emulsions. The stability tests showed distinct phase separation ratios for each formulation: 12.67% for WD, 10.67% for HD, 4.67% for WB, and 4.27% for HB. Meanwhile, the temperature rise (ΔT) varied slightly by formulation, ranging from 1.67-1.97 °C for WD and HD, and from 2.33-2.73 °C for WB and HB.
Optimalisasi Irigasi dengan Sistem Penghalang Sampah Cerdas Berbasis IoT Abdullah, Muhamad Nanda; Irawan, Muhammad Fariedz; Ksatria Danuaji; Sumarsono, Nur Indah Wulandari; Shafida, Threea Agung Delta
Autocracy: Jurnal Otomasi, Kendali, dan Aplikasi Industri Vol 8 No 1 (2026): Otomasi, Kendali, dan Aplikasi Industri
Publisher : LPPM Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/autocracy.081.02

Abstract

Irrigation channels in agricultural areas such as Karawang often experience blockages due to the accumulation of waste and weeds, which consequently disrupt water distribution. To date, the problem has been addressed manually, a method considered neither effective nor efficient. In response to this issue, this study aims to design and assemble an intelligent waste barrier system based on a conveyor mechanism, equipped with an HC-SR04 ultrasonic sensor and an Arduino UNO microcontroller. The system activates when the sensor detects waste, then sends a signal to the Arduino to operate the conveyor. The assembly process was successfully carried out in accordance with the initial design, although further evaluation and refinement are still needed, particularly in adjusting the conveyor speed. This design is expected to serve as an initial step in developing an Internet of Things (IoT)-based solution to address waste blockages in irrigation channels more efficiently and sustainably.