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All Journal Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering)
Muhammad Dhafir
Universitas Syiah Kuala
Agriculture, Biological Sciences & Forestry Engineering

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Quantity and Physicochemical Analysis of Biodiesel from CPO Processed by Electrolysis Method Muhammad Dhafir; Darwin Darwin; Muhammad Alwi Al Fayed; Siti Suharyatun
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 12, No 2 (2023): June 2023
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v12i2.384-396

Abstract

Biodiesel is produced by esterification-transesterification, using alcohol as a reactant and acid and base catalysts. Electrocatalyst is a method to increase production yield by utilizing H+ and OH– ions as a catalyst. This study aims to investigate the biodiesel production process through the esterification-transesterification reaction and analyze the physicochemistry of biodiesel produced from CPO by electrolysis using platinum electrodes. CPO was esterified-transesterified and then analyzed the production yield and physicochemistry of biodiesel. Rsults showed that the highest biodiesel yield was produced at a voltage of 6 V, which is 88.67%, the lowest acid value and moisture content of biodiesel was produced from a voltage of 12 V are 0.99 mgKOH/g and 0.75%, the kinematic viscosity that met the SNI biodiesel standards resulted in a voltage of 6 V and without the use of electrolysis, namely 3.53 cSt and 3.63 cSt, and the highest flash point value for biodiesel is produced from a voltage of 12 V, which is 109 ° C.   Keywords:  Biodiesel, Crude palm oil (CPO), Electrolysis, Physicochemical, Platinum.  
Performance of Automatic Watering System for Bean Sprout Based on Microcontroller ATmega 328p Muhammad Idkham; Siti Mechram; Danang Abiyyudanah; Wirda Syadara; Muhammad Dhafir; Syafrizal Syafrizal
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 14, No 2 (2025): April 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i2.613-622

Abstract

Technological advancements in agriculture are crucial to meeting the increasing global food demand. Mung bean sprout (Vigna radiata) cultivation requires efficient irrigation to ensure optimal growth. This study designs and evaluates an automatic irrigation system based on the ATmega 328P microcontroller to address the challenge of watering every four hours. The system integrates water flow sensors, relays, and solenoid valves controlled by C-based software in the Arduino IDE. Nine different irrigation test combinations were conducted to determine the most effective strategy. Each treatment had three levels and was tested in triplicate. Data analysis was performed using ANOVA (α = 0.05), followed by the DMRT test to evaluate treatment interactions. Results indicate that the system operates consistently in regulating water flow, improving irrigation efficiency, and reducing human intervention. The best performance was achieved using 50 liters of water with a shower nozzle, yielding the highest production capacity. The system improves irrigation efficiency, prevents over- and under-watering, and enhances crop yield. Analysis shows that water quantity and spraying method influence the yield ratio value in a complex pattern. The W2N3 combination produced the highest value (3.6), while W1N1 had the lowest (2.4). Overall, their interaction significantly affects irrigation effectiveness. Keywords: Agricultural automation, Automatic irrigation, Microcontroller ATmega 328P, Mung bean sprouts (Vigna radiata), Performance testing.
Co-Authors Danang Abiyyudanah Darwin Darwin Muhammad Alwi Al Fayed Muhammad Idkham Siti Mechram Siti Suharyatun Syafrizal Syafrizal Wirda Syadara