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All Journal Indonesian Journal of Chemical Analysis (IJCA) Journal of Applied Mechanical Engineering and Renewable Energy (JAMERE)
Dayi Febriana, Ike
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Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Pengaruh Komposisi Katalis pada Pembuatan Komposit Sebagai Aplikasi untuk Body Kontes Mobil Hemat Energi (KMHE) Hamid, Abdul; Ali Zainal Abidin, Muhammad; Annafiyah, Annafiyah; Dayi Febriana, Ike; Miftahatul Ilmah, Aurista; Abdullah, Mohammad
Journal of Applied Mechanical Engineering and Renewable Energy Vol 4 No 2: August 2024
Publisher : Indonesian Society of Applied Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52158/jamere.v4i2.816

Abstract

A strong and light body shape is an important factor in the Energy Saving Car Contest. The shape and material of the body used affects the speed of the car. Composite materials are often chosen as material for making Energy Saving Car Contest bodies, because they are strong, light and have a fiber structure that binds each other. So this research aims to determine the effect of variations in catalyst composition on composite materials using fiberglass, woven roving and resin to obtain optimum composite results. Variations in the composition of the catalyst used are 1; 1.5; 2 and 2.5 %. Based on the results of the tests that have been carried out, tensile test results were obtained with the highest results, namely for 2.5% catalyst composition variation of 72.23 MPa and the lowest value was 27.1 MPa for a 1% catalyst composition. The greater the catalyst composition causes the tensile strength value to increase. The highest max force and modulus of elasticity test results were obtained with a 2% variation in catalyst composition, namely 7217 MPa and 16.30 MPa. Meanwhile, the highest impact test results obtained were 10.65 Joules with a catalyst variation of 1.5%..
Biodiesel Synthesis with Different Feedstock Oils: Free Fatty Acid Analysis and Fuel Properties Characterization Hamid, Abdul; Badrus Syafa', Muhammad; Esti Purbaningtias, Tri; Rahmawati, Zeni; Fatah, Misbakhul; Wahyuni, Tri; Dayi Febriana, Ike; Abdullah , Mohammad; Rohmah, Faizatur
Indonesian Journal of Chemical Analysis (IJCA) Vol. 9 No. 1 (2026): Indonesian Journal of Chemical Analysis
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijca.vol9.iss1.art2

Abstract

The present study evaluates the feasibility of non-edible and waste oils as sustainable feedstocks for biodiesel production through a two-step esterification–transesterification process. Waste cooking oil, Calophyllum inophyllum oil, and sunflower oil were employed as raw materials, with sodium hydroxide used as the base catalyst during transesterification. The initial free fatty acid content varied significantly among the feedstocks, ranging from 29.38% in Calophyllum inophyllum oil to 3.20% in waste cooking oil and 1.28% in sunflower oil. Acid-catalyzed esterification effectively reduced the free fatty acid levels, enabling efficient conversion during the subsequent transesterification step. Fourier transform infrared spectroscopy confirmed the successful formation of fatty acid methyl esters, indicated by the presence of characteristic ester functional group absorption bands. Methyl oleate is the dominant component in all biodiesel samples, reaching 83.12% in sunflower oil biodiesel. The produced biodiesel exhibited kinematic viscosities of 4.61-5.63 cSt and flash points of 164-175 °C, meeting ASTM D6751 specifications.
Co-Authors Abdul Hamid Abdullah , Mohammad Abdullah, Mohammad Annafiyah Badrus Syafa', Muhammad Esti Purbaningtias, Tri Fatah, Misbakhul Miftahatul Ilmah, Aurista Muhammad Ali Zainal Abidin Rahmawati, Zeni ROHMAH, FAIZATUR tri wahyuni