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All Journal Journal of Degraded and Mining Lands Management Jurnal Teknologi Lingkungan
Setiaji, Abimanyu Bondan Wicaksono
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Engineering Environmental Science

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Spatial analysis of sedimentation hazard in the catchment area of the Indonesia nuclear power plant Alhakim, Euis Etty; Setiawan, Muhammad Anggri; Mellawati, June; Iswanto, Eko Rudi; Setiaji, Abimanyu Bondan Wicaksono
Journal of Degraded and Mining Lands Management Vol. 12 No. 2 (2025)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2025.122.6953

Abstract

Erosion and sedimentation resulting from land use changes can negatively impact watershed quality and threaten sustainability. Watershed quality is particularly crucial in areas designated for energy sector development, such as Nuclear Power Plants (NPPs). One potential NPP site in Indonesia is located downstream of the Raya watershed, where high river sedimentation may affect its performance. This study aimed to determine the spatial pattern of mean annual sediment yield in the Raya watershed using hydrological models. Due to the limited availability of data, secondary data analysis was employed, utilizing a geospatial hydrological modeling approach with the Soil and Water Assessment Tool (SWAT). The Hydrological Response Unit (HRU) was used as an analytical unit to identify physio-geographic similarities based on land use, soil type, and slope, which serve as dynamic hydrological controls. The results reveal the hydrological characteristics of the Raya watershed: an elongated shape, a dendritic river network, and moderate drainage density. The average slope is 12.6%, with a clay-loam soil texture and land cover dominated by dryland forests, oil palm plantations, and mining activities. The SWAT model produced an average sediment yield of 251.7 t/ha/year over a 10-year simulation period, classified as high sedimentation. High to very high sedimentation was predominantly found in the upstream areas, moderate sedimentation at the foothills, and low sedimentation in the alluvial plains downstream. These findings indicate a decline in land quality in the Raya watershed, highlighting the need for conservation measures to ensure the sustainability of the watershed ecosystem.
Potensi Penurunan Emisi CO2 Sektor Ketenagalistrikan di Provinsi Kalimantan Barat Melalui Bauran Energi Bersih SOLIHAT, SUFIANA; DRIEJANA, RADEN; SETIAJI, ABIMANYU BONDAN WICAKSONO
Jurnal Teknologi Lingkungan Vol. 26 No. 1 (2025)
Publisher : BRIN Publishing (Penerbit BRIN)

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Increasing greenhouse gas emissions and climate change have become urgent global challenges. Greenhouse gases, such as carbon dioxide (CO2), are primarily produced by the electricity sector, especially from burning fossil fuels. West Kalimantan Province faces specific challenges in developing its electricity sector due to the ban on bauxite exports and the increasing energy demand resulting from the expansion of smelter industries. This study aims to assess the potential reduction of CO2 emissions in West Kalimantan's electricity sector by implementing a clean energy mix, including hydropower, solar energy, and nuclear energy. A system dynamics approach is employed to model complex changes and policy impacts. The projection results indicate that developing clean energy can decrease CO2 emissions, but achieving a net-zero emission target by 2060 still requires further measures to address fossil fuel power plants. Abstrak Peningkatan emisi gas rumah kaca dan perubahan iklim menjadi tantangan global yang mendesak. Gas rumah kaca seperti karbon dioksida (CO2) salah satunya dihasilkan oleh sektor ketenagalistrikan, terutama dari pembakaran bahan bakar fosil. Provinsi Kalimantan Barat menghadapi tantangan khusus dalam pengembangan sektor ketenagalistrikan akibat larangan ekspor bauksit dan kebutuhan energi yang meningkat karena pengembangan industri smelter. Penelitian ini bertujuan untuk mengkaji potensi penurunan emisi CO2 di sektor ketenagalistrikan Kalimantan Barat melalui penerapan bauran energi bersih, termasuk energi air, surya dan nuklir. Pendekatan sistem dinamik digunakan untuk memodelkan perubahan yang kompleks dan dampak kebijakan. Hasil proyeksi menunjukkan bahwa pengembangan energi bersih dapat mengurangi emisi CO2, tetapi target net-zero emission di tahun 2060 masih memerlukan penanganan lebih lanjut terhadap pembangkit berbahan bakar fosil.
Co-Authors Alhakim, Euis Etty DRIEJANA, RADEN Eko Rudi Iswanto June Mellawati Setiawan, Muhammad Anggri Solihat, Sufiana