Article Per Year (5 Year)
p-Index From 2021 - 2026
0.444
P-Index
This Author published in this journals
All Journal ETHOS: Jurnal Penelitian dan Pengabdian kepada Masyarakat
Prabowo, Jerry Dwifajar
Unknown Affiliation
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering

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

Found 2 Documents
Search

 1 
Increasing Added Value in Basalt Rocks for Making Basalt Fiber Yuliadi; Zaenal; Moralista, Elfida; Prabowo, Jerry Dwifajar; Noufal Abhinaya
ETHOS: Jurnal Penelitian dan Pengabdian kepada Masyarakat Vol. 12 No. 1 (2024): (Januari, 2024) Ethos: Jurnal Penelitian Dan Pengabdian Kepada Masyarakat (Sai
Publisher : UPT Publikasi Ilmiah UNISBA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29313/ethos.v12i1.2903

Abstract

Andesite and basalt are generally mined materials used only for building (construction). To increase the added value, basalt rock is currently starting to be widely used as a construction material that is converted into composites with fiber reinforcement. In this initial research, the aim is to examine the characteristics of basalt rock at three locations in the Greater Bandung area (Gunung Bohong, Cipatik, and Batu Templek), including its chemical composition, physical and mechanical properties, and mineral composition. The research methodology is carried out on three rock characteristics that can be used as basalt fiber, namely the XRF method to determine chemical composition (Al2O3 and SiO2), physical and mechanical testing, as well as the petrographic analysis method to discover mineral composition by examining the presence of Plagioclase minerals. The results of the chemical analysis of all samples are suitable, but there are chemical compounds that do not match the parameters, namely Fe2O3 + FeO and MgO. Samples from Cipatik and Batu Templek are suitable. The physical properties test is also suitable. For mechanical property testing, only samples from Gunung Bohong and Cipatik are suitable. Petrographic tests conclude that the three rock samples fit into the basaltic andesite rock category.
Particle Size Effects on Limestone Channel Treatment of Acid Mine Drainage Qurniawan, Ridho; Dwifajar Prabowo, Jerry; Nurrochman, Andrieanto
ETHOS: Jurnal Penelitian dan Pengabdian kepada Masyarakat Vol. 14 No. 2 (2026): (Juli, 2026) Ethos: Jurnal Penelitian Dan Pengabdian Kepada Masyarakat (Sains
Publisher : UPT Publikasi Ilmiah UNISBA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29313/ethos.v14i2.7919

Abstract

Acid mine drainage (AMD) is acidic wastewater from mining activities containing dissolved heavy metals, posing serious environmental threats if discharged without treatment. Despite various passive treatment technologies, the relationship between limestone particle size and physicochemical parameters in Open Limestone Channel (OLC) systems remains insufficiently understood, particularly regarding the trade-off between short-term reactivity and long-term armoring susceptibility. This study aimed to simulate and evaluate OLC performance in neutralizing synthetic AMD (FeSO₄ solution; pH 0.99; Fe³⁺ = 10 mg/L) using Padalarang limestone in three particle sizes (#10, #12, and #16 mesh). The novelty lies in the integrated evaluation of pH, ORP, TDS, and EC alongside direct visual observation of armoring formation under controlled laboratory conditions. Results showed that #10 mesh achieved the highest average pH of 7.15 (range: 6.64–7.68), while #16 mesh exhibited faster passivation and more intensive armoring despite higher initial reactivity. All channels reduced ORP from 557 mV to ~135–145 mV and decreased TDS, while EC increased due to Ca²⁺ and HCO₃⁻ ion release. Appropriate particle size selection is critical to optimizing reactivity and durability in OLC-based passive AMD treatment.
Co-Authors Andrieanto Nurrochman Elfida Moralista Noufal Abhinaya Qurniawan, Ridho Yuliadi Zaenal