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All Journal Jurnal Teknologi Lingkungan Universitas Trisakti Jurnal Reka Lingkungan Journal of Regional and City Planning Journal of Engineering and Technological Sciences Jurnal Sains Dan Teknologi Lingkungan EKOLOGIA : Jurnal Ilmiah Ilmu Dasar dan Lingkungan Hidup Jurnal Teknik Lingkungan LIMNOTEK Journal Serambi Engineering (JSE) JURNAL REKAYASA KIMIA & LINGKUNGAN Journal of Engineering and Technological Sciences
Prayatni Soewondo
Department of Environmental Engineering, Bandung Institute of Technology,
Aerospace Engineering Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Mathematics Social Sciences Transportation

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KINETIKA PENYISIHAN FOSFAT DARI AIR LIMBAH LAUNDRY MENGGUNAKAN SISTEM CONSTRUCTED WETLAND DENGAN EQUISETUM HYMALE Munuqy, Wulanda Anggi; Soewondo, Prayatni
Ekologia: Jurnal Ilmiah Ilmu Dasar dan Lingkungan Hidup Vol 24, No 2 (2024): Ekologia : Jurnal Ilmiah Ilmu Dasar dan Lingkungan Hidup
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/ekologia.v24i2.10885

Abstract

The increasing number of laundry businesses leads to an increasing amount of wastewater produced. The resulting laundry waste contains phosphates that if disposed of without treatment can provide eutrophication in the body of water. This study aims to lower phosphate levels found in laundry wastewater in the Dipatihukur area, Bandung using a constructed wetland system using the Equisetum hymale plant. Lowering phosphate levels using Equisetum hymale plants with variations of stay time of 1, 2, 3, 4, and 5 days with batch system. The results obtained showed that phosphate levels in waste before treatment of 10,846 mg/L. The value is greater than the standard of quality set by the government of 0.2 mg/L. Test Processing with Constructed Wetland shows that the plant Equisetum hymale can set aside phosphate significantly. The lowest phosphate rate after processing reached 0.227 mg/L with 96.75% contact time for 5 days. Phosphate preliminary rate by plants can be reduced with time of contact with the plant. The mechanism is the process of adsorption by the plant Equisetum hymale by referring to the first-order kinetic model by showing the value of regression coefficient (R2) 0.9014.
Pemetaan Transparansi Air di Waduk Saguling dengan Menggunakan ANN dan Landsat 8 Magfhira, Azzahra; Soewondo, Prayatni; Wijayasari, Winda; Rohmat, Faizal
Jurnal Serambi Engineering Vol. 10 No. 3 (2025): Juli 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

The decline in water transparency in the Saguling Reservoir indicates deteriorating water quality due to increasing pollutant loads from domestic, industrial, agricultural, and aquaculture activities. This study aims to predict water transparency using an ANN model, integrating remote sensing data from Landsat 8 (2013-2024) and in-situ measurements from 12 sampling points. The analysis began with correlation tests, which revealed weak to moderate relationships between transparency and other variables. Subsequent simple and multiple linear and logistic regression analyses produced weak correlations, with the highest R² of 0.1853 observed in multiple logistic regression. The Random Forest algorithm was applied to identify the most influential variables. The selected predictors included Bands 3, 4, 5, and 7, as well as temperature, EC, and TSS. These variables were used as inputs for the ANN model, which demonstrated high performance with an R² of 0.8514, explaining 85.14% of the variability in water transparency. The prediction results were visualized in a distribution map, indicating a predominance of transparency class IV (0-2.5 m) across the reservoir. This suggests limited light penetration due to high pollutant loads. The study shows that integrating remote sensing and ML enables effective large-scale water quality monitoring and supports sustainable water resource management.
Kinerja Upflow Anaerobic Fixed Bed Reactor dengan Media Penunjang Batu Apung dalam Penyisihan Organik dan Pembentukan Biogas dari Biowaste Fase Cair Nursetyowati, Prismita; Soewondo, Prayatni; Handajani, Marisa
Jurnal Rekayasa Kimia & Lingkungan Vol 10, No 4 (2015): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v10i4.3304

Abstract

Dalam penelitian ini, biowaste yang digunakan adalah sampah pasar. Sampah pasar menyumbang sekitar 12% dari berat total sampah kota. Upflow Anaerobic Fixed Bed Reactor (UAFB-R) yang digunakan dalam penelitian ini memakai media penunjang batu apung dengan resirkulasi efluen dan tanpa pengatur pH. Penelitian ini bertujuan untuk melihat kinerja UAFB-R dengan media penunjang batu apung dalam penyisihan organik dan pembentukan biogas terutama gas metan biowaste fasa cair. Hydraulic Retention Time UAFB-R ditentukan sebesar 6 hari dengan volume operasi sebesar 9 liter. Variasi beban organik influen dalam penelitian adalah 0,32 kg COD/m3.hari, 0,64 kg COD/m3.hari, 0,96 kg COD/m3.hari, 1,28 kg COD/m3.hari, 1,6 kg COD/m3.hari, dan 1,92 kg COD/m3.hari. Pada rentang beban organik influen 0,32 kg COD/m3.hari sampai 1,92 kg COD/m3.hari di kondisi tunak, semakin besar beban organik influen maka efisiensi penyisihan COD semakin kecil dan rasio TAV/Alkalinitas semakin besar. Namun, semakin kecil beban organik influen maka komposisi dan volume gas metan serta methane yield cenderung semakin besar. Saat variasi beban influen 0,96 kg COD/m3.hari dihasilkan volume gas metan terbesar sebanyak 1,77 liter, sedangkan saat variasi beban organik influen 0,64 kg COD/m3.hari dicapai komposisi gas metan dan methane yield terbesar sebesar 77,4% dan 0,249. Selain itu, semakin tinggi konsentrasi sulfat maka maka volume biogas yang terbentuk menjadi lebih kecil.
Analysis of Individual Aspects in Riverbank Slums on Sustainable Sanitation Development (Case Study: Bima City, NTB, Indonesia) Gusmiati, Gusmiati; Soewondo, Prayatni; Awfa, Dion; Halomoan, Nico; Sarli, Prasanti Widyasih; Setiyawan, Ahmad Soleh
Journal of Engineering and Technological Sciences Vol. 56 No. 2 (2024)
Publisher : Directorate for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2024.56.2.10

Abstract

Currently, 24.5% of the population of Bima City lack access to sanitation. The issue is predominantly concentrated in densely populated urban slums along the riverbanks, influenced by the cultural and societal context of Indonesian society. From 2021 to 2022, a comprehensive mixed-method study was conducted in three urban slums, applying the Integrated Framework for Sanitation Services (IFSS) to explore individual aspects within a socio-cultural context. Combining quantitative and qualitative methods, the research involved a household questionnaire survey and in-depth interviews (IDI). The study revealed that individual aspects are shaped by perceptions of the convenience of open defecation and latrine use as well as experiences with shared latrines, driving the adoption of private latrines. Challenges such as financial constraints and limited construction capabilities in urban slum communities often hinder latrine construction, though cultural and traditional values (adat) in the Bima community in urban slums help to alleviate these obstacles. A recommendation is made to enhance the monitoring of sanitation adoption progress, focusing on the sanitation system’s functioning and adherence to the sanitation hierarchy. Despite awareness of the importance of safe disposal, its impact on sanitation behavior in Bima City’s urban slums has been constrained, underscoring the imperative for effective behavior change communication strategies.
STRATEGI PENANGANAN SANITASI DI PERMUKIMAN KUMUH DENGAN PENDEKATAN PARTISIPASI STAKEHOLDER (STUDI KASUS KOTA BIMA, NUSA TENGGARA BARAT) Hutagaol, David Christian; Soewondo, Prayatni; Awfa, Dion; Setiyawan, Ahmad Soleh; Sarli, Prasanti Widyasih; Halomoan, Nico
Jurnal Reka Lingkungan Vol 11, No 3 (2023)
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/rekalingkungan.v11i3.246-257

Abstract

ABSTRAKKebutuhan akan sanitasi merupakan salah satu kebutuhan dasar manusia sebagai bagian dari upaya perlindungan kesehatan dan mendorong peningkatan ekonomi melalui peningkatan kapasitas pemerintah kabupaten/kota untuk mengimplementasikan program sanitasi di Indonesia. Kota Bima sebagai lokasi studu dengan permasalahan sanitasi perlu didukung oleh stakeholder. Penelitian ini dapat melengkapi dokumen yang sudah dibuat. Penelitian ini dilakukan dengan metode campuran atau mixed method yang dilakukan secara kualitatif pada metode Stakeholder Analysis (SA) dan metode kuantitatif pada metode Social Network Analysis (SNA). Stakeholder Analysis dilakukan dengan focus group discussion (FGD) sedangkan Social Network Analysis dilakukan berdasarkan kuesioner yang diisi oleh peserta FGD saat acara FGD berlangsung. Hasil rangkaian penelitian di Kota Bima: teridentifikasi 52 stakeholder yang memiliki kepentingan terkait sanitasi di permukiman kumuh; terpetakan ada 8 key actors, 7 important actors, 6 interested actors, dan 9 additional actors ; teridentifikasi 4 influential stakeholders yang juga adalah key actors. Secara umum kekohesifan (density) semua jenis kerja sama pada Kota Bima tidak cukup baik, yaitu 7,7%. Diperlukan peningkatan kerja sama dengan Perusahaan Swasta, Masyarakat, dan Akademisi untuk penanganan sanitasi di permukiman kumuh Kota Bima. Kata kunci: sanitasi, kawasan kumuh, stakeholder analysis, social network analysis, Kota Bima ABSTRACTThe need for sanitation is one of the basic human needs as part of efforts to protect health and encourage economic improvement to increase the capacity of district/city governments to implement sanitation programs in Indonesia. Bima City as a study location with sanitation problems needs to be supported by stakeholders. This research was carried out using mixed methods which were generally carried out qualitatively using the Stakeholder Analysis (SA) method and quantitatively using the Social Network Analysis (SNA) method. Stakeholder Analysis was carried out using a focus group discussion (FGD) while Social Network Analysis was carried out based on a questionnaire filled out by FGD participants during the FGD event. The results of research series in Bima City: identified 52 stakeholders who have an interest in sanitation in slum settlements; there are 8 key actors, 7 important actors, 6 interested actors, and 9 additional actors; there are 4 influential stakeholders who are also key actors. In general, the cohesiveness (density) of all types of cooperation in Bima City is not good enough, namely 7.7%. There is a need to increase cooperation with private companies, communities and academics to handle sanitation in Bima City slums. Keywords : sanitation, slum area, stakeholder analysis, social network analysis, Bima City
Kinerja Tangki Septik dan Implikasinya terhadap Emisi Metana dan Pemulihan Energi Hibatullah, Nisrina; Soewondo, Prayatni; Sintawardani, Neni
Jurnal Serambi Engineering Vol. 11 No. 1 (2026): Januari 2026
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Decentralized septic tank-based sanitation systems remain the primary choice for domestic wastewater management in developing countries, including Indonesia. However, substandard designs and minimal maintenance result in low treatment performance, environmental pollution, and significant greenhouse gas (GHG) emissions. This study used six domestic septic tank units in Bandung City, using a reverse engineering approach and first-order reaction kinetics modeling to estimate influent pollutant loads, organic load removal efficiencies, and methane generation potential. Variation results showed a high Hydraulic Retention Time (HRT) (2–27 days) and an average Chemical Oxygen Demand (COD) concentration of 9,556 mg/L, far exceeding design standards. Units with long HRTs had COD removal efficiencies of up to 91% and methane production potential of up to 490 m³/year, but all gas was released as fugitive emissions due to the lack of a capture and subsequent treatment system. Scenario modeling based on IPCC guidelines shows that the implementation of technical standards (SNI 2398:2017) and Scheduled Fecal Sludge Treatment (LLTT) can reduce methane emissions by up to 90% (from 13.52 Gg/year to 2.09 Gg/year) and recover 50.3 GWh/year of energy through sludge treatment at Fecal Sludge Treatment Plants (IPLT). These findings confirm that minimal intervention with the integration of sludge management and energy recovery is an effective strategy for climate mitigation and household sanitation systems.
Co-Authors Agus Jatnika Effendi Andik Yulianto Arie Fandya Astried Sunaryani, Astried Damir Brdjanovic Dion Awfa Fauzi, Mhd. Gusmiati, Gusmiati Halomoan, Nico Herto Dwi Arisyady, Herto Hibatullah, Nisrina Hutagaol, David Christian Immaddudin Wira Rohmat, Faizal Karmilia, Alya Magfhira, Azzahra Mahmud Mahmud Marisa Handajani Marisa Handayani Munazah, Ashila Rieska Munuqy, Wulanda Anggi Neni Sintawardani Novanta, Muhammad Iqbal Prismita Nursetyowati, Prismita Rizka, Miftahir Rohmat, Faizal Santoso, Arianto Budi Sarli, Prasanti Widyasih Setiadi, Tjandra Setiyawan, Ahmad Soleh Tedjakusuma, Teddy Thye Yoke Pean Tirtana Putri, Aulia Widya Ramdhani Wijayasari, Winda