Article Per Year (5 Year)
p-Index From 2021 - 2026
0.408
P-Index
This Author published in this journals
All Journal ARMATUR : Artikel Teknik Mesin dan Manufaktur Jurnal Berkawan
Randy Kurniawan
Institut Teknologi Sumatera
Aerospace Engineering Automotive Engineering Engineering Health Professions Industrial & Manufacturing Engineering Mechanical Engineering Medicine & Pharmacology Neuroscience Nursing Public Health Social Sciences

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Pengaruh Aktivasi Termal Abu Dasar Batubara terhadap Kinerja Adsorpsi dalam Peningkatan Sifat Fisik Pelumas Bekas Randy Kurniawan; Darrel Parulian Cleverson Aritonang; Dino Nata Hidayat; Raihan Ramadhan; Asri Damertine Girsang; Devano Ramadhan; Rezky Tri Yunanda; Glory Florensa Br Siregar; Rikki Martin Nababan; Ummi Kulsum Hidayati
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 7 No. 2 (2026): Jurnal Armatur (in Progress)
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/armatur.v7i2.11727

Abstract

Used lubricating oil contains degradation products and contaminants that may cause environmental pollution if improperly disposed of. This study investigated the utilization of coal bottom ash as an adsorbent for used lubricating oil purification and evaluated the effect of thermal activation on its adsorption performance. Bottom ash was purified using 2 M H₂SO₄ and subsequently thermally activated at 650°C for 3 h with NaOH assistance. The chemical composition of the adsorbent was analyzed using X-ray Fluorescence (XRF), while adsorption performance was evaluated through density, kinematic viscosity, and flash point measurements of the treated oil. XRF results showed that the purification process reduced Ca content from 22.36 wt.% to 10.44 wt.% and Fe content from 29.19 wt.% to 20.61 wt.% while preserving the major silica and alumina components. The thermally activated bottom ash exhibited better adsorption performance than the non-activated adsorbent, resulting in higher density and viscosity values of the treated oil. These findings demonstrate that thermal activation improves the adsorption capability of bottom ash, indicating its potential as a low-cost and environmentally friendly adsorbent for used lubricating oil purification.
PEMANFAATAN TEKNOLOGI GEOFISIKA DAN PENGUATAN LITERASI MASYARAKAT UNTUK PENGELOLAAN AIR TANAH BERKELANJUTAN DI DESA JATIMULYO, KABUPATEN LAMPUNG SELATAN Andri Yadi Paembonan; Dwi Miftha Kurnia; Randy Kurniawan; Stevy Canny Louhenapessy; Rozi Afdi; Fitri Rusmaladewi; Muhammad Rifqi Dwi Septian; Friska Hasugian; Putri Agustryani; Azman Munthoha Maula
Jurnal Berkawan: Jurnal Pengabdian kepada Masyarakat Vol. 3, No.1, Januari 2026
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The availability of clean water is a crucial issue in Jatimulyo Village, South Lampung Regency, particularly during the dry season. Residents face difficulties accessing water sources due to a limited understanding of the subsurface groundwater potential. In response to this problem, a team from the Sumatra Institute of Technology (ITERA) conducted a community service activity aimed at mapping this groundwater potential. This activity utilized the geoelectric resistivity method to identify subsurface structures and determine the locations and depths of potential aquifers for drilled wells. In its implementation, the team collaborated with the local village government and involved participants from the Geophysical Engineering and Petroleum and Gas Engineering Study Programs. In addition to technical surveys, the team also conducted a socialization of their findings and provided education on groundwater utilization. This event, attended by residents, local neighborhood (RT) heads, and village officials, highlighted the importance of proper aquifer identification, well maintenance techniques, and strategies for ensuring water resource sustainability. This initiative received positive appreciation from the village head and residents, who hope the results of the ITERA study can provide a concrete solution to address the challenges of clean water availability in their region.
Co-Authors Andri Yadi Paembonan Asri Damertine Girsang Azman Munthoha Maula Darrel Parulian Cleverson Aritonang Devano Ramadhan Dino Nata Hidayat Dwi Miftha Kurnia Fitri Rusmaladewi Friska Hasugian Glory Florensa Br Siregar Muhammad Rifqi Dwi Septian Putri Agustryani Raihan Ramadhan Rezky Tri Yunanda Rikki Martin Nababan Rozi Afdi Stevy Canny Louhenapessy Ummi Kulsum Hidayati