Vol. 10 No. 3 (2025): ENVIRONMENTAL ENGINEERING
Published:
12/10/2025
Articles
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Integration of Socio-Agroecosystem in the Implementation of Semi-Autonomous Hand Tractors in Wetlands: Efforts to Empower Women and the Elderly Towards Sustainable Agriculture
Dellah Tian Saputri University Sriwijaya Indonesia , Amin Rejo Department of Agricultural Technology, Faculty of Agriculture, Sriwijaya University Indonesia , Rizky Tirta Adhiguna Department of Agricultural Technology, Faculty of Agriculture, Sriwijaya University IndonesiaAbstract: Pelabuhan Dalam Village, Ogan Ilir, is a swamp–lowland agricultural area dominated by rice cultivation. Challenges such as the decline in productive labor, the use of conventional tractors that cause soil compaction, and the low participation of women and the elderly have led to socio-economic and ecological problems. This study integrates a socio-agroecosystem approach through the implementation of semi-autonomous hand tractors to improve technical efficiency and community empowerment. The results show a 31% increase in work efficiency, a 17% reduction in fuel consumption, and a 21% decrease in soil compaction. The participation of women and the elderly also increased, accompanied by a 16% rise in household income per planting season. This integration has proven effective in promoting socio-economic welfare and the sustainability of wetland agriculture in South Sumatra.
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Pages: 129-134Views: - Downloads: -Assessing the Characteristic of Bands Combination in Log Ratio Change Detection Using SAR Imagery
Agus Dwi Hartanto Universitas Sriwijaya Indonesia , Dwi Setyawan Universitas Sriwijaya Indonesia , Ferdinand Hukama Taqwa Universitas Sriwijaya IndonesiaLog ratio is one of the change detection techniques often used in SAR image-based flood inundation analysis where the differences in characteristics between its polarizations are expected to complement each other and provide optimal predictions. This research aimed to identify the characteristics of the output generated from various potential combinations utilizing log ratio change detection. The study utilized Sentinel-1 GRD IW dual polarization mode before and during the flood event as its main datasource. Briefly, the data processing consists of preprocessing, collocation, and change detection, which were subsequently followed by analysis and evaluation. The analysis results indicated a highly significant difference in characteristics among the four outputs of log ratio change, where the combinations of VH1/VH2 and VV1/VV2 detected much smaller changes compared to the combinations of VV1/VH2 and VH1/VV2. The VV1/VH2 combination acts as a counterpoint to the VH1/VV2 combination, as the changes identified in VV1/VH2 showed a tendency towards positive values, whereas the opposite is true for VH1/VV2. The evaluation results show that the highest frequency of errors in detecting changes sequentially was observed in the combinations of VH1/VV2, VV1/VH2, VV1/VV2, and VH1/VH2.Pages: 135-142Views: - Downloads: -Retaining Wall Design As a Landslide Disaster Mitigation Effort On The Enim River South Sumatra, Indonesia
M. Sang Gumilar Panca Putra Civil Engineering Department Polythechnic of Srwijaya, Palembang 30137, Indonesia Indonesia , Nita Anggraini Civil Engineering Department Polythechnic of Srwijaya, Palembang 30137, Indonesia Indonesia , Dwi Wahyuni Civil Engineering Department Polythechnic of Srwijaya, Palembang 30137, Indonesia IndonesiaThis research focuses on analyzing the stability of three types of retaining walls cantilever, gravity, and sheet pile to address landslide risks along the Enim River in Tanjung Karangan Village, Muara Enim Regency. The village is prone to landslides due to high riverbanks and unstable soil conditions exacerbated by erosion and settlement encroachment. To mitigate these risks, retaining walls are crucial in maintaining slope stability and preventing further erosion. The study utilized Windows Forms methods to perform numerical simulations and evaluate key factors such as the safety factor, sliding resistance, overturning resistance, bearing capacity, and material strength of the designed walls. The cantilever retaining wall design proved effective, achieving safety factors for overturning (1.80), sliding (1.51), and bearing capacity (1.31), making it suitable for implementation at the study location. However, the gravity retaining wall, despite meeting safety requirements for overturning (1.72) and bearing capacity (1.35), failed in sliding, with a safety factor of 1.49, indicating it is not appropriate for this case due to insufficient sliding resistance. The analysis of the sheet pile retaining wall focused on embedment depth and material quality. A steel sheet pile with a length of 9 meters, an embedment depth of 4.82 meters, and material properties of Fy = 450 MPa and E = 2.1 x 105 MPa was determined to be a feasible solution. The findings conclude that both cantilever and sheet pile retaining walls can effectively mitigate slope instability and riverbank erosion, while the gravity retaining wall is not suitable for the given conditions. These results provide valuable insights for future infrastructure development in landslide-prone areas.
Pages: 143-149Views: - Downloads: -Antibacterial Activity of Lactic Acid Bacteria Isolated from Cincalok Against Escherichia coli and Listeria monocytogenes
Zuwita Cahaya Rani Br Lubis Maritim Raja Ali Haji University Indonesia , Yulia Oktavia Maritim Raja Ali Haji University Indonesia , Sri Novalina Amrizal Maritim Raja Ali Haji University Indonesia , Wulandari Wulandari Jambi University IndonesiaThis study aims to determine the antibacterial activity of lactic acid bacteria (LAB) isolates from cincalok, a traditional shrimp fermentation product, against Escherichia coli and Listeria monocytogenes. Five lactic acid bacteria isolates (A1, A2, A3, A4, and A5) were assayed for their antagonistic activity against E. coli and L. monocytogenes. The antagonistic assays were conducted with different incubation times of the LAB isolates before the antagonistic assays. The incubation times were 18, 21, and 24 hours. LAB isolates that showed inhibition zones were further assayed in antibacterial assays. Antibacterial assays were conducted by the disk diffusion method. Antagonistic and antibacterial assays were each carried out in triplicate. The antagonistic assay results showed that only isolates A3 and A4, which were incubated for 24 hours, showed inhibition zones. Inhibition zones of isolate A3 against L. monocytogenes were 1.33 ± 1.04 mm, while against E. coli were 0.67 ± 0.29 mm. Inhibition zones of isolate A4 against L. monocytogenes were 1.33 ± 1.04 mm, while against E. coli were 1 ± 0.5 mm. Antibacterial assay results showed inhibition zones of isolate A3 against L. monocytogenes were 4.67 ± 0.58 mm, while E. coli 6.67 ± 2.08 mm. Inhibition zones of isolate A4 against L. monocytogenes were 3.67 ± 0.58 mm, while E. coli 4.33 ± 0.58 mm. Antibacterial activity of Isolates A3 and A4 had weak inhibition against L. monocytogenes and E. coli. Antibacterial activity depended on the type of target bacteria and was influenced by incubation time and environmental conditions.
Pages: 150-155Views: - Downloads: -Optimization Of Paddy Farming System In Shallow Swamp Land Case Study Of River two Village
Yuwinti Nearti Universitas Sumatera Selatan Indonesia , Nirmala Jayanti Universitas Sumatera Selatan Indonesia , Eka Mulyana Universitas Sriwijaya IndonesiaThe conventional farming system used by farmers is planting paddy fields. Conditions for developing and optimizing the paddy field farming system on shallow swampy land with rainfed soil require various interrelated aspects. The objectives of the study include: 1) providing information on the characteristics, potential, and opportunities of shallow swampy land for agricultural development, analyzing the amount of income for farmers so that they can increase maximum profits for these farmers, 2) optimizing the paddy field farming system based on land, labor and capital in implementing land and water management technology. Determination of respondents intentionally (purposive), the sample taken in this study were 100 rice and purple eggplant farmers. The analysis used income, feasibility and optimization using linear programming. The results showed that the average value of rice farming income was Rp3,641,966.5/Ha and the average value of purple eggplant was Rp3,865,939 in River twoVillage. Farming with the optimization of the farming system is feasible to be cultivated with R/C values of 1.32 and 5.87. Optimization of the shallow swampy rice farming system per hectare is recommended only for purple eggplant farming activities so that the income obtained is more profitable while for labor, the remaining and unused labor is 119 and for unused capital of Rp10,979,640, the optimum income of farmers is Rp3,865,939/Ha/MT.Pages: 156-165Views: - Downloads: -Assessment of Groundwater Potential and Suitable Borehole Locations in Esan Central Using Remote Sensing and Geospatial Analysis
Stephen Olushola Oladosu University of Benin, Benin City, Nigeria Nigeria , Mabel Eghemenrior Alenkhe University of Benin Nigeria , Obehi Isesele University of Benin Nigeria , Tijjani Yusuf Muhammad University of Benin NigeriaGroundwater potential zone mapping is essential for identifying optimal sites for sustainable water infrastructure. This study presents a novel integration of ten environmental factors using remote sensing and GIS-based Analytical Hierarchy Process (AHP) to delineate groundwater potential zones and suitable borehole sites in Esan Central Local Government Area (LGA), Edo State, Nigeria. Unlike previous studies that focused on fewer variables, this research incorporates slope, geology, rainfall, drainage density, lineament density, land use/land cover, elevation, soil type, and proximity to infrastructure. The model was validated using 43 ground-truth locations with an overall accuracy of 85.3% and a Kappa coefficient of 0.78. Results showed that the majority of the area (65.2%) falls under moderate groundwater potential, while only 0.06% lies in the very high category. Borehole suitability analysis identified 43 optimal drilling locations. These findings provide actionable insights for planners and water agencies aiming to improve rural water access through scientifically grounded siting decisions.
Pages: 166-184Views: - Downloads: -Distribution and Types of Microplastics in Coastal Sediments of Sepanjang Beach
Risda Putri Indriani Jakarta State University Indonesia , Reza Dino Mahardika Jakarta State University Indonesia , Feni Oetari Jakarta State University Indonesia , Rusdi Rusdi Jakarta State University Indonesia , Hanum Isfaeni Jakarta State University IndonesiaMicroplastic waste has polluted Indonesian waters, especially at Sepanjang Beach. Microplastics that are not handled properly can enter the digestive tract of aquatic animals, one of which is gastropods. The presence of microplastics must be identified in the gastropod digestive tract, considering that gastropods are also a food ingredient. Sampling was done by purposive sampling and quadratic transects. The length of the transect used is 50m perpendicular to the beach with a quadrant plot measuring 1x1 m. In each plot, 1 individual was taken for each species found. Sample preparation using 15 ml of 10% KOH solution and incubated for 1 night. Optical analysis of microplastics using a stereo microscope at 40x magnification. The most microplastics were found in the Turbo setosus species with 701 particles. The most common form of microplastic found in Gastropods and Bivalvia in the sample was fiber with a total of 2204 particles. Microplastics were also found in seawater on the beach with the form of fiber being the most commonly found, namely as many as 553 particles.
Pages: 185-190Views: - Downloads: -The Effect Of Triple Dip La Niña On Rainfall In Lombok During 2020 - 2023
Muhammad Faisal Rohman , Purwanti Lelly Sabrina , Avrionesti AvrionestiTriple Dip La Niña is a term that describes the La Niña phenomenon that lasts for 3 consecutive years. History records that this phenomenon last occurred in 1973 - 1976 and 1998 - 2001 which influenced the regional weather system through the mechanism of atmosphere-ocean interaction, one of which was in Lombok. This study was conducted to analyze the impact of the emergence of the Triple Dip La Niña phenomenon on rainfall variability in Lombok from 2020 to 2023, as well as to test the correlation of the ENSO relationship indicated by the ONI (Oceanic Niña Index) indicator with rainfall variables. The data used in this study were monthly rainfall data from 55 rain posts and ONI data from NOAA. The results showed that the influence of Triple Dip La Niña on rainfall variability was observed most significantly in the dry season (JJA) with an increase in rainfall >100%. A strong relationship between the ONI index and rainfall was identified in Senaru, Bayan, Janapria, and Pringgabaya.
Pages: 191-205Views: - Downloads: -Make a Submission
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Sriwijaya Journal of Environment Sekolah Pasca Sarjana Universitas Sriwijaya