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Novianti, Relita
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Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Engineering Environmental Science

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Assessment of Flash Flood Vulnerability Index in a tropical watershed region: a case study in Ciliwung Hulu watershed, Indonesia Novianti, Relita; Wardhani, Fitriany Amalia; Prihatinningtyas, Eka; Sapan, Elenora Gita Alamanda
LIMNOTEK Perairan Darat Tropis di Indonesia Vol. 29 No. 1 (2023)
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/limnotek.2023.1105

Abstract

Flash floods, an unpredicted swift climatological disaster, frequently occur in Indonesia. However, there are limited vulnerability assessments, especially in urban and vital regions such as Bogor District. The study aims to assess the vulnerability index of Ciliwung Hulu Watersheds as one of the most susceptible areas in the district. Flash flood vulnerability index (FFVI) is selected to be calculated as the indicator. Data were obtained from the official government offices and processed using the FFVI formula referring to the work of Nasiri et al., (2019) and Perka BNPB No. 2/ 2012 and then mapped using ArcGIS 10.3. The results and the maps show that the study area is categorized as highly to very highly vulnerable to flash flood disasters. The attained results help facilitate the governance interplay processes in building a more disaster-ready management plan and to construct a more resilient society.
Comparative Water Quality Assessment of Cascade Urban Lakes: Dori, Walini, and Dora in Bogor Regency, Indonesia Rahmadya, Aldiano; Yusuf Afandi, Ahmad; Rohaningsih, Denalis; Novianti, Relita; Verawati, Dewi; Dianto, Aan
LIMNOTEK Perairan Darat Tropis di Indonesia Vol. 30 No. 2 (2024)
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/limnotek.2024.5611

Abstract

Urban lakes are critical in flood mitigation, providing fresh water, and offering green spaces in urban environments. However, many urban lakes face increasing ecological pressures from various human activities. This study assesses the water quality and morphometric conditions of three urban lakes—Dori, Walini, and Dora in the Cibinong Botanical Garden Complex in Bogor Regency, located in a high-rise residential area. The study aims to evaluate the current water quality, identify contributing factors to water quality degradation, and compare conditions across the three lakes. Data was collected between January and April 2023, utilizing a Geographic Information System (GIS) for morphometric analysis and water quality measurements. Water quality was assessed in accordance with the standards set by Government Regulation No. 22 of 2021. Results indicate that Lake Dori, Walini, and Dora have surface areas of 3,406.96 m², 7,668.37 m², and 13,599 m², respectively. Based on water quality classifications, both Lake Walini and Lake Dori meet Class III standards (suitable for water use), while Lake Dora, though also in Class III, exhibits milder pollution indicators. These findings provide important insights for managing urban lakes and can guide future environmental policies.
STUDI KELAYAKAN APLIKASI ZEOLIT DALAM PENGOLAHAN AIR PAYAU MENJADI AIR BERSIH Prihatinningtyas, Eka; Novianti, Relita
Purifikasi Vol 23 No 1 (2024): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Planning, and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/purifikasi.v23i1.449

Abstract

Salah satu pengolahan air payau adalah adsorpsi. Dalam penelitian ini, dua jenis zeolit dibandingkan sebagai adsorben. Zeolit A diperoleh melalui aktivasi fisik dengan pemanasan pada suhu 600 oC. Zeolit yang termodifikasi menggunakan surfaktan HDTMA-Br akan menghasilkan Zeolit B. Kedua jenis zeolit tersebut dikarakterisasi menggunakan SEM, XRD, dan PSA. Hasil analisis PSA menunjukkan bahwa Zeolit B memiliki luas permukaan, volume, dan ukuran pori yang lebih tinggi dibandingkan Zeolit ​​A. Aktivitas adsorpsi diukur berdasarkan penghilangan salinitas, kekeruhan, TDS, dan konduktivitas pada berbagai massa adsorben dan waktu adsorpsi. Hasil penelitian menunjukkan Zeolit A mampu menurunkan salinitas sebesar 15,38% dalam waktu 30 menit dan massa 6 gram. Zeolit B sebanyak 4 gram mampu menghilangkan salinitas 17,31% sekaligus. Rendahnya rasio nilai Si/Al menyebabkan kapasitas adsorpsi menjadi lemah. Air terproduksi juga belum memenuhi standar persyaratan air bersih dan air minum.
Co-Authors Dianto, Aan Eka Prihatinningtyas Rahmadya, Aldiano Rohaningsih, Denalis Sapan, Elenora Gita Alamanda Verawati, Dewi Wardhani, Fitriany Amalia Yusuf Afandi, Ahmad