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Journal of Geoscience, Engineering, Environment, and Technology
Published by Universitas Islam Riau
ISSN : 2503216X     EISSN : 25415794     DOI : 10.25299
Core Subject : Science, Social, Engineering,
Earth & Planetary Sciences Engineering Environmental Science Physics
JGEET (Journal of Geoscience, Engineering, Environment and Technology) published the original research papers or reviews about the earth and planetary science, engineering, environment, and development of Technology related to geoscience. The objective of this journal is to disseminate the results of research and scientific studies which contribute to the understanding, development theories, and concepts of science and its application to the earth science or geoscience field. Terms of publishing the manuscript were never published or not being filed in other journals, manuscripts originating from local and International. JGEET (Journal of Geoscience, Engineering, Environment and Technology) managed by the Department of Geological Engineering, Faculty of Engineering, Universitas Islam Riau.
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Articles 595 Documents
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Analysis of the Effect of Cationic and Anionic Surfactants and Polymer Additives on the Water-Oil Interface in Enhanced Oil Recovery: A Molecular Dynamics Naibaho, Frans Nicolas P.; Ar-Raihan, Muhammad Hasbi; Adharis, Azis; Ratri, Paramita Jaya; Mayangsari, Tirta Rona
Journal of Geoscience, Engineering, Environment, and Technology Special Issue from The 2nd International Conference on Upstream Energy Technology and Digitalization
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2025.10.1.1.24610

Abstract

The high demand for petroleum requires a more efficient production process. Enhanced Oil Recovery (EOR) technology with chemical injection methods can optimize oil production in reservoirs. To understand the properties of these chemicals, analysis at the atomic level is necessary. This research utilizes molecular dynamics simulations using the Large-scale Atomic/Molecular Massively Parallel Simulator (LAMMPS) to analyze diffusion coefficients and Interface Formation Energy (IFE) values. Surfactants such as Dodecyl Trimethylammonium Bromide (DTAB), Sodium Dodecyl Sulfate (SDS), and Polyacrylic Acid (PAA) polymer are studied. Results indicate that DTAB, SDS, and PAA stabilize the water-oil system, shown by lower IFE values: -48.53, -178.33, and -231.78 kcal/mol, respectively. DTAB increases the diffusion coefficient of dodecane from 0.01 Ų/ps to 0.039 Ų/ps. SDS and PAA increase water diffusion coefficients from 0.0094 Ų/ps to 0.0097 Ų/ps (with SDS) and 0.0179 Ų/ps (with PAA).
Integration of Marine and Land-based Spatial Planning: A Systematic Review of Global Trends, Challenges, and Best Practices for the Indonesian Context Radiwan Helmi; Kiky Permana Setiawan
Journal of Geoscience, Engineering, Environment, and Technology Vol. 10 No. 4 (2025): JGEET Vol 10 No 04 : December (2025)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2025.10.4.24621

Abstract

Integrating marine and land-based spatial planning is a strategic priority for Indonesia, the world's largest archipelagic country. Yet, its implementation is hampered by institutional challenges such as sectoral egos and overlapping jurisdictions. This study aims to bridge the gap between conceptualization and practical implementation by conducting a systematic literature review of 22 relevant global studies from the Scopus database up to August 3, 2025. Bibliometric analysis confirms a significant gap between the conceptual understanding of "land-sea interaction" and the operational application of "land-sea coordination". A geographical analysis reveals the dominance of research from China (59%) and a starkly minimal representation from Indonesia, indicating a critical research gap. Although various successful governance models have been identified—from centralized frameworks in China to participatory approaches in the UK—this study concludes that no single solution is universally applicable. Therefore, this study recommends an urgent research agenda focused on the Indonesian context, specifically to evaluate the synchronization of policies post-Job Creation Law, overcome institutional barriers, and develop participatory planning models capable of addressing Indonesia's unique socio-ecological complexities to sustainably realize its maritime potential.
Integrating Hydrological Modeling and Pavement Evaluation to Analyze the Impact of Drainage Performance on Road Infrastructure Farida, Ida; Habil Khadafi , Muhammad; Wijaya, Alan Wijaya
Journal of Geoscience, Engineering, Environment, and Technology Vol. 10 No. 4 (2025): JGEET Vol 10 No 04 : December (2025)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2025.10.4.24641

Abstract

The drainage channel along Gatot Subroto Road in Karangpawitan District, Garut Regency, extends about 1,580 meters in an open rectangular form with varying cross-sectional dimensions. Reports from the Public Works and Spatial Planning Agency (UPT PUPR) indicate frequent overflow and partial malfunction, mainly due to additional inflow from residential drainage and undersized sections. These conditions contribute to recurrent flooding, disruption of community activities, and accelerated pavement deterioration. This study aims to quantify design flood discharge, assess the hydraulic capacity of the existing system, evaluate pavement condition influenced by runoff, and recommend redesigned channel dimensions using hydrological hydraulic analysis with the SWMM model. A quantitative approach was applied, integrating rainfall frequency analysis, hydraulic evaluation, and Pavement Condition Index (PCI) surveys. The results show that under a 2 year return period, most segments performed adequately, whereas at 5 and 10 year periods several sections exceeded their capacity. PCI surveys yielded an average value of 58.66, categorized as “Fair,” with critical segments falling into failure due to uncontrolled runoff. After redesign, channel performance improved substantially, with Max/Full Flow ratios consistently below 1 across all segments and return periods. The findings confirm a direct relationship between drainage performance and pavement deterioration. Integrating SWMM based modeling with PCI analysis provides a robust framework for diagnosing deficiencies and formulating technical recommendations. These results are consistent with previous studies, emphasizing that drainage adequacy and pavement condition must be addressed together to improve resilience and extend the service life of urban road infrastructure.
Subsurface Alteration Characteristics Due to Hydrothermal Influence Using the Geoelectrical Method in the Ie Seu’um Geothermal Area, Aceh Besar Hasana, Nur; Sugiyanto, Didik; Muksin; Syukri, Muhammad
Journal of Geoscience, Engineering, Environment, and Technology Vol. 10 No. 4 (2025): JGEET Vol 10 No 04 : December (2025)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2025.10.4.24674

Abstract

Research on subsurface alteration due to hydrothermal fluid influence was conducted in the hydrothermal manifestation area of Mesjid Raya District, Aceh Besar, Aceh. Data was acquired using the electrical resistivity method with a Wenner–Schlumberger configuration along four survey lines. Survey Lines 1 and 2, each 106.5 m long with 1.5 m electrode spacing, represent Zone 1, which is located directly at the hot spring source. Survey Lines 3 and 4, each 210 m long with 3 m electrode spacing, represent Zone 2, located 3.5 km from Zone 1 and 2 unaffected by hot fluid flow. This study aimed to identify the geothermal influence on subsurface characteristics. The results revealed clear differences in the resistivity profiles between Zones 1 and 2, with resistivity variations ranging from 0–600 Ωm and 0–5000 Ω·m, respectively. Interpretation indicates that Zone 1 consists of hydrothermally altered volcanic rocks, while Zone 2 comprises alluvium affected by weathering in the unsaturated (vadose) zone under meteoric water influence. These subsurface alterations provide essential evidence of geothermal impacts on rock characteristics. The findings also support the interpretation that the Ie Seu’um geothermal system is strongly concentrated in Zone 1, whereas surrounding areas show weaker manifestations that do not support the development of an active geothermal system.
Influence of Laterite Bedrock on Ni Content in Langgikima District, North Konawe Regency, Southeast Sulawesi, Indonesia Hasria; Okto, Ali; Rio Irhan Mais Cendra Jaya; Alamyah, Wa Ode Nur; Safar, Muhamad; Septiana, Sara; Syahrul
Journal of Geoscience, Engineering, Environment, and Technology Vol. 10 No. 4 (2025): JGEET Vol 10 No 04 : December (2025)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2025.10.4.24735

Abstract

This study investigates the influence of bedrock on nickel (Ni) content in laterite deposits in the Lameruru Region, Langgikima District, North Konawe Regency, Southeast Sulawesi Province, Indonesia. The research area is dominated by ultramafic rocks, which are potential sources of laterite nickel. The study employs literature review, field surveys for lithological data collection and representative sampling, petrographic analysis to determine mineral composition and rock types, and geochemical analysis using X-Ray Fluorescence (XRF) to determine nickel content in the rocks. The results show that the bedrock in the study area consists of harzburgite and olivine pyroxenite. Harzburgite, occupying approximately 72.72% of the area, is composed of 54-78% olivine, 15-45% orthopyroxene, 6% clinopyroxene, and accessory minerals, while olivine pyroxenite, occupying about 27.28% of the area, is composed of 27% olivine, 49% orthopyroxene, 17% serpentine, and 7% spinel. Geochemical analysis reveals that harzburgite has higher Ni content (0.10-0.16%) compared to olivine pyroxenite (0.03-0.10%). The distribution of Ni in the bedrock and saprolite is directly proportional, with higher Ni content in harzburgite in both zones. The study concludes that the type of bedrock greatly influences the nickel content in laterite deposits, with harzburgite having a higher Ni content due to its higher percentage of olivine minerals, which are the main hosts of nickel in ultramafic rocks.
A Study On Soil Bearing Capacity Strengthening Using Soil Cement On Jagebob Road With Unconfined Compression Test Erdawaty; Ritnawati; Fitriana, Tati; Adriati, Yolly; Tondok, Sapri Sampe
Journal of Geoscience, Engineering, Environment, and Technology Vol. 10 No. 4 (2025): JGEET Vol 10 No 04 : December (2025)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2025.10.4.24848

Abstract

This study investigates the improvement of soil bearing capacity through the application of soil–cement stabilization on Jagebob Road using the Unconfined Compression Test (UCT). The research aims to evaluate how curing duration affects the compressive strength development of soil cement mixtures. Laboratory experiments were conducted on cohesive soil samples with curing periods of 0, 3, and 7 days to observe the changes in both physical and mechanical properties. The results show that at 0 days of curing, the compressive strength remained low (0.103–0.114 kg/cm²) due to incomplete hydration. After 3 days, a significant increase in strength was observed, reaching up to 0.295–0.305 kg/cm², indicating the beginning of cement hydration and improved particle bonding. At 7 days, the soil achieved even higher compressive strength as the hydration process produced more calcium silicate hydrate (C-S-H) and calcium hydroxide (Ca(OH)₂), which enhanced the density and bonding of the soil matrix. These findings confirm that the curing period plays a crucial role in strengthening soil cement. Therefore, a curing duration of at least seven days is recommended to achieve optimal mechanical performance and ensure improved bearing capacity of stabilized soils for road infrastructure such as Jagebob Road.
Mapping of Tsunami Vulnerability Levels and Planning of Shelter Points and Evacuation Routes along the Palabuhanratu Coastline Zafira, Aura Putri; Sutoyo; Putra, Heriansyah; Erizal; Ramadhanis, Zainab
Journal of Geoscience, Engineering, Environment, and Technology Vol. 10 No. 4 (2025): JGEET Vol 10 No 04 : December (2025)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2025.10.4.24849

Abstract

The Palabuhanratu Subdistrict, located in the Sukabumi Regency, is a high-risk area for tsunami disasters owing to tectonic activity along the Indo-Australian and Eurasian Plate subduction zones. The tsunami vulnerability level in this subdistrict is further heightened by the relatively dense population in its coastal areas, which increases the potential for loss of life and material losses. Therefore, an analysis of tsunami vulnerability levels and the planning of structural mitigation measures—such as shelters and evacuation routes—are crucial to protect communities from tsunami threats. This study aims to analyse the inundation area and affected population under tsunami scenarios with wave heights of 10, 15, and 20 m; identify the coverage of the proposed tsunami shelters; and evaluate the effectiveness of evacuation routes leading to the shelters in the Palabuhanratu Subdistrict. The methods employed include scoring and weighting techniques, Model Builder tools, and Network Analyst. The results indicate that coastal villages, such as Citepus, Jayanti, and Palabuhanratu, are highly vulnerable to tsunamis. Based on inundation modelling, Palabuhanratu Village had the largest inundated area and the highest number of affected residents. Most residents of Citepus and Jayanti Villages are located more than 1,350 m from the nearest shelter, with travel times exceeding 30 min. In contrast, the majority of residents in Palabuhanratu Village can reach shelters within 20 min, although some are still categorised as being in distant and very distant zones. A total of 11 evacuation routes were designed to connect the initial evacuation points to the shelters. However, 2 of the 11 routes, from Point 5 and 6, still exceed 1.000 m in distance and require more than 20 min of travel time.
Mineralogy and Geochemistry of Rare Earth Elements in Manganese Deposits in the Anabanua District, Barru Regency, South Sulawesi Province, Indonesia Wakila, Muhamad Hardin; Chalik, Citra Aulian; Thamsi, Alam Budiman; Jafar, Nurliah; Harwan; Umar, Emi Prasetyawati
Journal of Geoscience, Engineering, Environment, and Technology Vol. 10 No. 4 (2025): JGEET Vol 10 No 04 : December (2025)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2025.10.4.24882

Abstract

Research programmes on rare earth elements have not been widely carried out, especially on manganese deposits, even though manganese deposits also contain rare earth elements. Research on manganese mineralogy has been done before, however, research has not focused on rare earth metal elements found in manganese deposits, so further research is needed to find out the mineralogy, geochemistry, and gardes of rare earth metal elements in manganese deposits in the tropics. There are 3 methods of analysis at once, namely petrographic, XRD, and ICP-OES methods. The minerals found in manganese samples in the study area are: Albite, Chlorite, Plagioclase, Orthoclase, Quartz, Chlorite, Opaque, Pyrolusite, Muscovite, Diopside, Hematite, Rodochroite, Manganochromite and Manganite. Rare earth element levels in manganese deposits are Yttrium (8.7-35.5 ppm), Scandium (4-28 ppm), Lanthanum (5.3-122 ppm), Cerium (9.4-198 ppm), Praseodymium (1.3-23.6 ppm), Neodymium (690.9), Samarium (1.2-15. 4 ppm), Europium (0.6-3.5 ppm), Gadolinium (1.4-13.5 ppm), Terbium (0.241.75 ppm), Dysprosium (1.4-7.9 ppm), Holmium (0. 3-1.3 ppm), Erbium (0.8-3.2 ppm), Thulium (0.1-0.4 ppm), Ytterbium (0.8-2.4 ppm) and Lutetium (0.14-0.39 ppm). These results indicate that manganese deposits in Anabanua Village, Barru Regency, have the potential to be a source of LREE (La, Ce, Pr, Nd, and Sm) with concentrations exceeding those of several deposits around the world, making them worthy of consideration in strategic mineral exploration in Indonesia in general.
WaveInsight: A Source-Independent Full Waveform Inversion Application for Seismic Modeling Sigalingging, Asido Saputra; Ignatius Sonny Winardhi; Handoyo
Journal of Geoscience, Engineering, Environment, and Technology Vol. 10 No. 4 (2025): JGEET Vol 10 No 04 : December (2025)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2025.10.4.24921

Abstract

Full Waveform Inversion (FWI) is a key method in seismic exploration due to its ability to generate high-resolution subsurface velocity models. However, its success is highly dependent on the accuracy of the source wavelet, an incorrect wavelet estimation can lead to unstable inversion results. To overcome this limitation, Source-Independent FWI (SI-FWI) has been developed, which eliminates the need for precise source wavelet information. This study introduces WaveInsight, an application that efficiently implements SI-FWI using the Julia programming language, with Python integration via Devito for wave simulation. The application features a Streamlit-based graphical user interface, enabling users to perform a complete FWI workflow, including data preparation, initial model generation, and inversion. Experiments on synthetic Overthrust data compare three objective functions: Student-t, Mean Squared Error (MSE), and SI-FWI. The results show that SI-FWI outperforms conventional approaches under wavelet uncertainty, Student-t is more robust to noise, while MSE performs well with clean data. Thus, WaveInsight demonstrates its dual role as both an educational platform and a promising tool for advancing geophysical research and industrial applications.
Analysis of the Potential and Impact of Utilizing Nickel Slag Powder and Recycled Plastic on the Technical Properties of Concrete Blocks: In Terms of Strength and Cost Efficiency Nelfia, Lisa Oksri; Rahman, Muhammad Rifqon Fahrezza; Adijaya, Krisma; Sunarno, Yohans
Journal of Geoscience, Engineering, Environment, and Technology Vol. 10 No. 4 (2025): JGEET Vol 10 No 04 : December (2025)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2025.10.4.24979

Abstract

Plastic waste and nickel slag are significant environmental pollutants, while the construction sector demands sustainable building materials. This study investigates the use of nickel slag powder as a partial cement replacement and recycled High-Density Polyethylene (HDPE) plastic as a partial replacement for fine aggregate in concrete block production. Laboratory tests were conducted in accordance with SNI standards for compressive strength, splitting tensile strength, porosity, permeability, and cost. Results showed that low substitution levels (2.5–10%) improved both strength and durability. The highest compressive strength of 10.43 MPa was achieved at a 5% substitution level, compared to 7.13 MPa in the control mix, while the maximum tensile strength of 1.32 MPa was observed at a 2.5% substitution level. Porosity was reduced to 0.97% and permeability to 4.13 × 10⁻⁷ cm/s, indicating a denser microstructure. Cost analysis revealed a reduction from Rp9,128.80 per block (0% substitution) to Rp8,252.36 at 10%, yielding savings of about 9.6%. However, higher substitution levels (>10%) led to strength loss and increased porosity due to incomplete hydration and weak bonding. The results confirm that the optimal substitution range of 2.5–10% balances performance and cost, providing an eco-friendly and cost-effective solution for sustainable concrete block production within a circular economy framework.

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