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All Journal Jurnal Penelitian Kelapa Sawit Scientific Contributions Oil and Gas
Muhammad Ansori Nasution
Indonesian Oil Palm Research Institute
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Energy

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Determinasi Nilai RGB dan Grayscale pada Citra Tandan Buah Segar (TBS) Kelapa Sawit (Elaeis guineensis Jacq.) Menggunakan MATLAB Muhammad Ansori Nasution; Haikal Nando Winata; Fadlin Qisthi Nasution; Henny Lydiasari; Rivaldy Yustianto Pasaribu; Arjanggi Nasution; Ayu Wulandari
Jurnal Penelitian Kelapa Sawit Vol 30 No 1 (2022): Jurnal Penelitian Kelapa Sawit
Publisher : Pusat Penelitian Kelapa Sawit

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/iopri.jur.jpks.v30i1.159

Abstract

The Color and appearance are the most important indicators for a farmer to determine the condition of oil palm fresh fruit bunches (FFB) in the harvesting process. As the main attributes, the color and appearance become the guidelines for the initial assessment of fresh fruit bunches (FFB) of oil palm condition that is suitable or not for harvesting. In Facts, the FFB assessment activities are still carried out manually by utilizing the farmers visual, which is it will be prone to errors during the assessment. Due to this problem, it is important to automate the assessment of the color characteristics of oil palm FFB in order to minimize errors by farmers. The purpose of this study was to determine the efficiency of RGB color imaging techniques on oil palm FFB. The method used is processing and color analysis on 30 FFB images based on smartphone cameras to find the correlations for each color. Each color channel R, G and B in the FFB images was extracted and converted into grayscale using MATLAB R2021 software. The results show that the correlation value of R channel and grayscale has the highest value with R2 = 0.9569. This correlation is expected to be an initial study and suitable alternative for automating the assessment of the condition of oil palm FFB.
Dual-Waste Valorization: Sustainable Biodiesel Production from High-FFA Sludge Palm Oil Using Silica-Rich Water Treatment Sludge as A Low-Cost Catalyst Support M. Anshari; Meta Rivani; Muhammad Erlangga Habibi Nasution; Muhammad Ansori Nasution; Tubagus Rayyan Fitra Sinuhaji
Scientific Contributions Oil and Gas Vol 49 No 2 (2026)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v49i2.2051

Abstract

To address feedstock costs and environmental sustainability, this study employed a dual-waste valorization strategy by converting high-free fatty acid (FFA) sludge palm oil (SPO) into biodiesel using silica-rich water treatment sludge from PDAM as a low-cost support for a heterogeneous K2O/SiO2 catalyst. Due to the high initial acidity of SPO, a two-step process was used: acid esterification to reduce FFA levels below 2%, followed by alkaline transesterification. Optimization of the reaction parameters identified the ideal conditions as 6% catalyst loading, a 15:1 methanol-to-oil molar ratio, and a 2-hour reaction time at 63°C. Under these conditions, the process achieved a biodiesel yield of 70.43% with a high methyl ester purity of 98.01%. The produced biodiesel met the SNI 7182:2015 quality standards for density and acid number. Although the catalyst demonstrated stability over two consecutive cycles, its activity declined in the third cycle due to active-site leaching. This work confirms the viability of integrating industrial and municipal waste streams for sustainable and cost-effective bioenergy production.
Co-Authors Arjanggi Nasution Ayu Wulandari Fadlin Qisthi Nasution Haikal Nando Winata Henny Lydiasari M. Anshari Meta Rivani Muhammad Erlangga Habibi Nasution Rivaldy Yustianto Pasaribu Tubagus Rayyan Fitra Sinuhaji