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All Journal Jurnal Riset Teknologi Pencegahan Pencemaran Industri
Purwana Satriyo
Universitas Syiah Kuala
Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering Environmental Science

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Calculation of Erosion Rate and Conservation Efforts in the Lut Tawar Sub-Watershed Hiwana Alfadhila; Hairul Basri; Purwana Satriyo; Devianti; Syakur
Jurnal Riset Teknologi Pencegahan Pencemaran Industri Vol. 17 No. 1 (2026): May
Publisher : Balai Besar Standardisasi dan Pelayanan Jasa Pencegahan Pencemaran Industri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21771/jrtppi.2026.v17.no1.p63-72

Abstract

This study aims to analyze the level of erosion hazard (TBE) and formulate alternative soil and water conservation efforts that are appropriate to the conditions of the Lut Tawar Sub-watershed. The approach used is the integration of Geographic Information Systems (GIS) with the Universal Soil Loss Equation (USLE) method. Analysis of the magnitude of erosion (A) is carried out by calculating the rainfall erosivity factor (R), soil erodibility (K), slope length and gradient (LS), as well as plant management and conservation action factors (CP) in each land map unit (SPL). The results of the study show that the analysis of the erosion hazard level (TBE)—the potential for water erosion—indicates that the TBE value of 0.02 is included in the very light category. The TBE value in the range of 1.07–1.33 is classified as light, while the TBE value of 2.39 is included in the moderate category. Furthermore, the TBE value in the range of 3.95–6.51 indicates a severe level of erosion hazard, and the TBE value is very severe, namely 8.04 to 346.23. Overall, the TBE pattern at the site is classified as high, indicating that some SSTs are vulnerable to soil damage due to erosion. This is primarily influenced by a combination of very high actual erosion rates and relatively low Etol values in several soil types. Soil conservation efforts consist of mechanical conservation and vegetative conservation. Mechanical conservation includes the application of terracing and contour land management. Meanwhile, vegetative conservation is carried out through the planting of ground cover plants and the development of agroforestry systems on sloping land. This research can support sustainable management planning for the Lut Tawar Subwatershed and be used as a consideration in the formulation of soil and water conservation policies.
Analysis of the Suitability of Irrigation Water Quality in the Data Makmur Secondary Canal for Agricultural Crops Based on the SAR and RSC Method Classification Rifa Raihan; Syahrul; Purwana Satriyo
Jurnal Riset Teknologi Pencegahan Pencemaran Industri Vol. 17 No. 1 (2026): May
Publisher : Balai Besar Standardisasi dan Pelayanan Jasa Pencegahan Pencemaran Industri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21771/jrtppi.2026.v17.no1.p73-83

Abstract

This study aims to analyze the suitability of irrigation water quality in the Data Makmur Secondary Canal for agricultural crops based on the SAR and RSC method classifications. This study uses a quantitative approach supported by laboratory analysis. Water sampling was carried out with reference to the Indonesian National Standard (SNI) 06-2412-1991 concerning Water Quality Sampling Methods. Irrigation water samples were taken at the observation points of the Data Makmur Secondary Canal, with each sample volume ranging from 200–500 mL. The water samples were then analyzed at the Banda Aceh Industrial Standardization and Services Center and the Environmental Quality Testing Engineering Laboratory of the Chemical Engineering Study Program, Faculty of Engineering, Syiah Kuala University. The results of the irrigation water quality analysis in the Data Makmur Secondary Canal showed that the Sodium Adsorption Ratio (SAR) value for all samples was in the range of 0.3547–0.4471. This value is included in the very good category according to Todd standards (<10 meq/L), thus indicating that the irrigation water does not have the potential to cause sodicity problems and is still safe to use for agricultural activities. However, the Residual Sodium Carbonate (RSC) value showed a relatively high range, namely 1.927–3.629 meq/L. Based on Eaton's classification (>2.50 mEq/L), most samples are classified as unsuitable for irrigation, except for several points in Sample 2. This condition indicates the potential risk of soil structure degradation must be more closely aligned with the material being extracted and decreased soil permeability if water is used continuously. Therefore, regular water quality monitoring and further studies are needed with additional parameters and sampling points to achieve a more comprehensive representation of irrigation water quality.
Co-Authors Devianti Hairul Basri Hiwana Alfadhila Rifa Raihan Syahrul Syakur