Article Per Year (5 Year)
p-Index From 2021 - 2026
0.562
P-Index
This Author published in this journals
All Journal JTT (Jurnal Teknologi Terpadu) Justek : Jurnal Sains Dan Teknologi Jurnal Alat Berat
Devina Sanchia Samosir
Politeknik Negeri Balikpapan
Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
Life Cycle Assessment (LCA) of Biodiesel Production from Coconut Pulp Using In-Situ Transesterification with Microwave Energy Daya Wulandari; Riztamala Diana; Godlove Elioth Kiswaga; Leila Utarina; Devina Sanchia Samosir; Marisa Tri Octavia
Justek : Jurnal Sains dan Teknologi Vol 9, No 2 (2026): June
Publisher : Unversitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/justek.v9i2.38010

Abstract

Coconut pulps are solid waste from coconut processing that has had its coconut milk extracted, with a remaining oil content of around 12.2–15.9%. The processing of coconut pulp is not yet optimal, and this waste has the potential to be utilized as renewable energy in the form of biodiesel. Biodiesel is produced through an in-situ transesterification process assisted by microwave energy. This study aims to identify the potential environmental impacts of biodiesel production from coconut pulp as fuel. A Life Cycle Assessment (LCA) was conducted using the cradle-to-gate approach with the SimaPro ver. 9.4.0.3 data processing application and a database similar to the eco-invent database. The environmental impact assessment was analyzed using the EF 3.0 Method (adapted) V1.03 / EF 3.0 normalization and weighting set. The results show that among the stages of the biodiesel production process, the transportation of raw materials and supporting materials has the greatest impact on climate change compared to other stages. The transportation stage contributed 78.19 kg CO₂-eq out of a total of 204.35 kg CO₂-eq in the climate change category and dominated energy resource use at 1108.14 MJ out of a total of 1742.17 MJ. In addition, the preparation stage also contributed significantly to climate change, with emissions reaching 56.21 kg CO₂-eq. The large contribution from the transportation stage was mainly caused by exhaust gas emissions from vehicles used to transport raw materials and supporting materials. Based on the LCA results, environmental performance improvements or continuous improvements that can be implemented include optimizing logistics, regulating fuel use, selecting the nearest sources of raw materials, and improving energy efficiency during the preparation stage to support more sustainable biodiesel production from coconut pulp.
RANCANG BANGUN SPECIAL TOOL PORTABLE INSTALLING SPHERICAL BUSHING PADA UNIT DUMP TRUCK Dimas Saputra; Subur Mulyanto; Devina Sanchia Samosir
Jurnal Teknologi Terpadu Vol 14 No 1 (2026): JTT (Jurnal Terpadu Terpadu)
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32487/jtt.v14i1.2794

Abstract

Penggantian spherical bushing pada dump truck pertambangan yang masih dilakukan secara manual menggunakan palu 5 kg menimbulkan risiko keselamatan tinggi, rendahnya presisi pemasangan, serta peningkatan downtime dan kebutuhan manpower. Penelitian ini bertujuan merancang dan membangun special tool portable berbasis sistem hidrolik untuk pemasangan spherical bushing guna meningkatkan efisiensi, akurasi, dan keselamatan kerja. Metode penelitian meliputi studi lapangan, perancangan menggunakan SolidWorks, proses fabrikasi, pengujian alat, serta analisis kekuatan struktur menggunakan metode Finite Element Analysis (FEA). Alat yang dikembangkan dilengkapi hydraulic jack 10 ton dan adjustable guide bracket untuk menjaga keselarasan pemasangan. Hasil penelitian menunjukkan bahwa alat memiliki nilai safety factor yang tinggi, aman digunakan, meningkatkan presisi pemasangan, mempercepat waktu kerja, serta menurunkan risiko kecelakaan dan downtime unit. Alat ini terbukti efektif dan layak digunakan sebagai solusi inovatif pada perawatan dump truck pertambangan.
Analisis Kebocoran Sistem Lubrikasi Pada Rear Engine Komatsu PC 2000-8 Yudi Kurniawan; Subur Mulyanto; Herdian Dwimas; Devina Sanchia Samosir; Riski Sugino
JURNAL ALAT BERAT Vol 3 No 1 (2026): Januari 2026
Publisher : Politeknik Negeri Balikpapan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32487/jab.v3i1.43

Abstract

Penelitian ini bertujuan untuk menganalisis penyebab kebocoran oli pada sisi belakang engine pada unit excavator Komatsu PC 2000-8. Kebocoran oli pada sistem pelumas dapat menyebabkan penurunan kinerja engine dan kerusakan pada komponen lainnya. Metode yang digunakan dalam penelitian ini adalah penelitian lapangan dengan melakukan identifikasi penyebab, pengamatan dan diagnosis, pengumpulan data, analisis, penyebab yang dicurigai, kesimpulan, dan tindakan perbaikan. Hasil penelitian menunjukkan bahwa penyebab utama kebocoran sistem pelumasan pada sisi belakang engine dikarenakan terjadi contact surface pada sleeve rear seal yang mengalami keausan, sehingga dapat yang mengakibatkan kebocoran oli engine ke dalam sistem PTO. Dengan perbaikan pada komponen yang sesuai standar, kebocoran sistem lubrikasi ini dapat diatasi dan diminimalisasi.
Co-Authors Daya Wulandari Dimas Saputra Godlove Elioth Kiswaga Leila Utarina Marisa Tri Octavia Riski Sugino Riztamala Diana Subur Mulyanto Yudi Kurniawan