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All Journal Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Jurnal Ilmu Lingkungan Bulletin of Electrical Engineering and Informatics Jurnal Dampak Journal of Environment and Sustainability Jurnal Purifikasi Serambi Engineering
Bagastyo, Arseto Yekti
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering

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Wastewater monitoring system in the textile industry Raditya, Murry; Pratama, I Putu Eka Widya; Bagastyo, Arseto Yekti; Nurhayati, Ervin; Kalahari, Bintang
Bulletin of Electrical Engineering and Informatics Vol 13, No 5: October 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v13i5.7220

Abstract

Recently, a problem which often experienced by the Environmental Agency is to monitor the quality of industrial waste. The problem comes from manual monitoring of wastewater and the high cost of laboratory tests for each variable for the waste. This system is intended to develop a wastewater monitoring system considering the state of the environment and technology. This system uses 5 types of sensors to measure the quality of wastewater. The sensor will display measurement data both offline via liquid crystal display (LCD) and online via the website. For the pH sensor test, we obtained an error value approximately of 1.32% and accuracy of 98.68%. For the oxidation reduction potential (ORP) sensor test, we obtained an error value of 1.4% with 98.6% accuracy. We obtained an error value of 0.22% with 99.78% accuracy for the temperature sensor test. For the total dissolved solid (TDS) sensor test, we obtained an error value of 1.02% with 98.98% accuracy. The color sensor is validated using a spectrometer to measure the variation of color in remazol waste concentration. For the Client - Server communication test, the system has a delay of 2 seconds. One of the advantages of using a web server is the system has minimum network traffic.
PENTINGNYA PEMULIHAN URINE DARI AIR LIMBAH PERKOTAAN Bagastyo, Arseto Yekti; Anggrainy, Anita Dwi; Fatkhasari, Yasokhi; Noviani, Riskha
Purifikasi Vol 21 No 2 (2022): 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/j25983806.v21.i2.439

Abstract

Urine contains a high concentration of nutrients that could increase water pollution and corrosion in the sewerage system. Along with the decrease in global phosphorus reserves, this condition may aggravate the worldwide population’s vulnerability in food security, drinking water, sanitation, and hygiene. This paper aims to gain more knowledge on the importance of urine recovery from municipal wastewater. The previous implementation of the urine separation system, the importance of urine diversion, the potential product, and technologies for urine recovery was briefly described. Overall, urine diversion is expected to address those environmental problems by reducing water pollution and organic loading in wastewater treatment plants, providing valuable nutrients for agricultural production, and lessening the economic cost of improper sanitation.
Effect of ammonium/phosphate molar ratio on struvite production via electrolysis using a sacrificial magnesium anode Pangestu, Aditya Kurnia Aji; Bagastyo, Arseto Yekti; Nurhayati, Ervin; Lin, Jr-Lin; Sidik, Fahrudin
Sustinere: Journal of Environment and Sustainability Vol. 9 No. 1 (2025): pp. 1-127
Publisher : Center for Science and Technology, IAIN Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22515/sustinere.jes.v9i1.473

Abstract

Excessive ammonium and phosphate levels in aquatic environments potentially cause eutrophication, leading to water quality imbalance, algal blooming, and disturbance of biodiversity status. Electrolysis using a sacrificial magnesium anode effectively removes and recovers ammonium and phosphate, producing struvite (MgNH4PO4.6H2O). The present study investigated the optimum current density and the effect of the ammonium/phosphate molar ratio on struvite production. The current density was controlled at 10, 50, and 100 mA/cm2. An artificial wastewater containing [NH4+]:[PO43-] in a molar ratio of 1:10, 1:1, and 10:1 was used as the test solution. The optimum current density was determined as 50 mA/cm2. The ammonium and phosphate reduction ratios at a 1:1 molar ratio was approximately 46.91% and 74.26%, respectively. Increasing the ammonium molarity in the test solution to 10:1 increased the phosphate reduction ratio to 96.38% while decreasing the ammonium reduction ratio to 26.28%. The maximum precipitation of 4.1914 g was generated at a molar ratio of 10:1 with a specific energy consumption of 0.011 Wh/mg-P, out of the three ammonium/phosphate molar ratio variations. Microscopes and SEM-EDS were used to characterize the precipitates produced, and Visual MINTEQ 3.1 was then used for modeling.
Analisis Aliran Material Limbah Domestik di Pembangkit Listrik Tenaga Batubara Wicaksono, Aris Dwi; Bagastyo, Arseto Yekti
Jurnal Serambi Engineering Vol. 10 No. 3 (2025): Juli 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

This study evaluates the zero waste strategy for managing domestic solid waste within the operational environment of a large-scale coal-fired power plant (CFPP) in East Java. The Material Flow Analysis (MFA) method, which uses STAN 2.7.101 software, was employed to map waste flows and evaluate the potential for recovery. Data were collected through field observations, representative sampling and laboratory analysis, including proximate and ultimate testing. The results show that organic waste, such as leaves, food scraps and fruit peels, accounted for over 85 per cent of total waste generation. With recovery factors (RF) exceeding 70 per cent, this supports composting and maggot-based biodegradation. In contrast, inorganic waste, such as plastics and used pipes, had lower RF values ranging from 15 to 45 per cent. MFA modelling estimated that 25–30% of the total waste would remain as residue to be sent to landfill. This study emphasises the importance of reducing and recovering waste upstream to minimise final disposal. The study's originality lies in its systemic focus on domestic waste within an energy industry infrastructure, using MFA and RF as a robust basis for adaptive, sustainable waste management strategies.
PLASTIC PARTICLE CONTAMINATION IN SUBSTRATE AND FRASS OF BLACK SOLDIER FLY LARVAE CULTIVATION IN COMMUNITY SOLID WASTE RECYCLING CENTERS Octavia, Lusya Sevyana; Bagastyo, Arseto Yekti; Trihadiningrum, Yulinah
Purifikasi Vol 24 No 1 (2025): 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.v24i1.487

Abstract

Bioconversion of solid waste (SW) by black soldier fly (BSF) is a promising sustainable SW treatment approach. However, insufficient segregation may lead to plastic contamination in BSF larvae (BSFL) substrates, compromising the quality of BSFL-derived products and potentially introducing plastic particles into the food chain. This study aimed to investigate plastic abundance in SW from different sources and determine abundance of plastic particles in BSFL substrates and frass. The research was conducted at the Jambangan Recycling Center (JRC) and the Wonorejo Composting Center (WCC) in Surabaya, Indonesia. The results showed that 74% of SW at JRC was suitable for BSFL substrate, while only 36.62% of SW can be used in WCC. The amount of plastic abundance in the BSFL substrate in JRC and WCC were 2.28% and 7.63%, respectively. At JRC, 12 macroplastic (MaP), 9 mesoplastic (MeP), and 334 microplastic (MP) particles were detected per kilogram dry-weight (DW) of BSFL substrate, whereas 250 MP particles were found in frass. The insufficient SW segregation at the WCC has led to an abundance of plastic particles per kilogram DW of BSFL substrate (i.e., 40 MaP, 35 MeP, and 734 MP particles) and frass (484 MP particles). Plastic transparent films were mostly found in both substrates and frass. The size of MaPs typically ranged from 2.5 to 10 cm, while MPs predominantly fell within the 1 µm to 1 mm range. These findings highlight the importance of source segregation to reduce plastic contamination and enhance the efficiency and safety of BSF bioconversion process.
Potensi Pengolahan Sampah Domestik Kota Sawahlunto Menjadi Refuse Derived Fuel (RDF) Rusyadi, Mughni Alvin; Bagastyo, Arseto Yekti; Goembira, Fadjar
Dampak Vol. 22 No. 2 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/dampak.22.2.42-49.2025

Abstract

Peningkatan timbulan sampah seiring dengan pertumbuhan populasi dan konsumsi masyarakat menimbulkan tantangan besar dalam pengelolaannya, terutama di tengah meningkatnya kebutuhan energi. Upaya menghadapi tantangan tersebut dapat dilakukan dengan pengembangan energi terbarukan di Indonesia. Sumber energi yang belum banyak dimanfaatkan oleh masyarakat adalah energi yang berasal dari biomassa seperti sampah (waste to energy). Refuse Derived Fuel (RDF) menjadi salah satu alternatif yang dapat digunakan untuk menanggulangi permasalahan peningkatan timbulan sampah dan peningkatan kebutuhan energi. Penelitian bertujuan untuk menganalisis potensi pengolahan sampah domestik Kota Sawahlunto menjadi RDF berdasarkan kelayakan aspek teknis dan nonteknis, serta memberikan rekomendasi strategi pengelolaannya. Data menunjukkan timbulan sampah domestic Kota Sawahlunto sebesar 1,24 kg/orang/hari dengan densitas 3,07 L/orang/hari. Komposisi dari sampah domestik yang dihasilkan berturut-turut adalah sampah sisa makanan sebesar 42,12%; sampah plastik 26,37%; sampah kertas 18,69%; sampah kayu/daun 6,93%; residu 3,11%; sampah tekstil 2,21%; dan sampah karet/kulit 0,57%. Analisis karakteristik sampah domestik sebagai bahan baku RDF mengungkapkan: kadar air (10,66%), zat mudah menguap (32,26%), kadar abu (4,98%), dan nilai kalor (16,74 MJ/kg). Hasil analisis ini memenuhi persyaratan teknis SNI 8966:2021 sebagai bahan baku RDF, kecuali pada beberapa komponen yang memerlukan pretreatment.   Kata Kunci: RDF, Kota Sawahlunto, sampah domestik, energi
Feeding Frequency and Amino Acid Effects on Black Soldier Fly Larvae Performance Ursada, Riang; Bagastyo, Arseto Yekti; Radita, Deqi Rizkivia; La’ali, Anisah Zahira
Jurnal Serambi Engineering Vol. 10 No. 3 (2025): Juli 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The continuous increase in waste generation, driven by population growth, necessitates sustainable waste management solutions. One promising approach is the bioconversion of organic waste using Black Soldier Fly (BSF) larvae, which naturally accelerate the decomposition process. This study investigates the effect of amino acid supplementation and feeding frequency on BSF larval growth, nutrient composition (protein, fat, carbohydrate, moisture, ash), waste reduction, and cultivation efficiency. A total of 700 five-day-old larvae were fed 1.8 g/larva/day using a mixture of restaurant and market waste. Results showed that the addition of 15 mL amino acids did not significantly enhance larval growth, except in fresh waste with a 70:30 ratio over three days, where larvae reached 27 g at 17 days old. Nutrient content varied with waste composition, while feeding frequency had minimal influence. The highest values recorded were moisture (72%) in fresh P100 (1-day feeding), ash (26.29%) in fresh R100 (1-day), protein (46.97%) in fresh 70:30 (3-day), fat (45.11%) in landfill 70:30 (3-day), and carbohydrate (0.15%) in landfill waste. Amino acid addition contributed to increased protein content. Feeding frequency impacted the Waste Reduction Index (WRI), waste reduction rate, and frass C/N ratio. The highest WRI (5.27%) and reduction rate (94.90%) were observed in fresh P100 (1-day feeding), with frass C/N ratios ranging from 13.09 to 28.82. These findings highlight the potential of optimizing feed composition and frequency for enhanced BSF-based organic waste bioconversion.
PERENCANAAN PENGEMBANGAN PENGOLAHAN SAMPAH ORGANIK MENGGUNAKAN BLACK SOLDIER FLY (BSF) DI TPS 3R SAWUNGGALING, KEC. TRENGGALEK, KAB. TRENGGALEK Aji Pangestu, Aditya Kurnia; Bagastyo, Arseto Yekti
Purifikasi Vol 22 No 1 (2023): 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/j25983806.v22.i1.446

Abstract

The population growth of Trenggalek sub-district has an impact on the increase in waste generation. However, waste reduction carried out through the implementation of TPS 3R Sawunggaling with a facility area of 362.5 m2 only manages 40% - 45% of incoming waste so that development is needed. The objectives of this planning include: evaluate the existing condition of waste management; identify waste generation, density, and composition; and plan the development of organic waste processing using Black Soldier Fly in technical and financial aspects at TPS 3R Sawunggaling. Sampling activities were carried out using the load-count analysis method and obtained data on waste generation, density, and composition of TPS 3R Sawunggaling. Technically, the planning was carried out by determining the service coverage of TPS 3R Sawunggaling, analyzing mass balance, planning the addition of organic waste processing facilities by BSF, and calculating labor requirements. Financially, the feasibility of planning is determined using the Net Present Value (NPV) method by calculating investment costs, operational and maintenance costs, and potential income. Based on the evaluation results, waste management at Sawunggaling TPS 3R needs improvement in terms of waste segregation at the source, adding a fixed schedule for waste collection, and increasing compost production. The waste generation and density of Sawunggaling 3R TPS were found to be 0.67 kg/person/day and 204.91 kg/m3. The waste composition is dominated by organic waste at 83.7% while the rest is inorganic waste. By utilizing the potential of organic waste entering Sawunggaling 3R TPS, it is planned to develop organic waste processing by adding a composting method using BSF larvae. In the planning year, Sawunggaling 3R TPS serves 1,268 people with waste generation of 864.34 kg/day. Through this planning, the residue of Sawunggaling 3R TPS was reduced from 57.9% to 24.6%, thus reducing the waste that is transported to the final processing site (TPA). In managing this facility, Sawunggaling 3R TPS requires an investment cost of Rp. 34,271,157.60, an operational cost of Rp. 217,601,983.80/year, and will generate a potential income of Rp. 434,747,586.62/year. From these costs, a positive NPV value is obtained, which means that the development planning is financially feasible.
KARAKTERISASI INFLUEN LUMPUR DI INSTALASI PENGOLAHAN LUMPUR TINJA (IPLT) KEPUTIH SURABAYA Nurhayati, Ervin; Bagastyo, Arseto Yekti; Fathyah, Fathyah; Rahayu, Dewi Puji; Yulikasari, Andriyan
Purifikasi Vol 22 No 2 (2023): 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/j25983806.v22.i2.453

Abstract

Evaluasi unit operasi dan unir proses IPLT Keputih perlu dilakukan, guna menunjang tingkat pelayanan IPLT Keputih. Pengujian karakteristik lumpur yang masuk ke IPLT dilakukan dengan melakukan pengujian di laboratorium terkait parameter pH, BOD, COD, TSS, TVS, TFS, N, P, minyak, lemak serta uji SVI. Sampel yang diambil dari beberapa tempat, yaitu berasal dari non tinja seperti Sentra Wisata Kuliner, Rusunawa, Sentra Pasar Ikan, Fasilitas Kesehatan, Mall dan Restoran. Sedangkan untuk lumpur tinja diambil dari masing-masing unit pengolahan di IPLT Keputih. Berdasarkan karakteristik masing-masing beban pencemar, yaitu berasal lumpur non tinja dan tinja mengindikasikan beban yang cukup besar. Beban lumpur sendiri yang didapatkan dari Rusunawa mengindikasikan bahwa lumpur masih tergolong segar, belum ada degradasi yang terjadi. Hasil penelitian menunjukkan bahwa karakteristik lumpur tinja dari masing-masing unit pengolahan IPLT Keputih masih melebihi baku mutu yang berlaku. Besarnya beban pencemar yang masuk ke IPLT Keputih yang bukan hanya dari lumpur tinja, namun juga lumpur non tinja mengakibatkan beban pengolahan yang tidak sesuai idle capacity unit pengolahan di IPLT Keputih.
WASTEWATER TREATMENT USING ELECTROCOAGULATION FOR TOMATO KETCHUP INDUSTRY Syaifuddin, Mohammad; Bagastyo, Arseto Yekti; Arliyani, Isni
Purifikasi Vol 22 No 2 (2023): 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/j25983806.v22.i2.454

Abstract

One of the most dangerous food industry wastes is the liquid resulting from the production of tomato sauce, which contains many organic substances and suspended solids. Electrocoagulation, a method for processing tomato sauce liquid waste, is environmentally friendly, easy to use, and saves land. Many people use plate-shaped electrodes for electrocoagulation, but cylindrical electrodes usually have lower power consumption during the process. By considering ideal conditions, this research aims to determine the ideal use of differences in current strength, pH and anode material. In addition, they also wanted to determine the specific energy consumption and amount of sludge in the cylindrical reactor. The quality of the electric current of 30 A, 35 A, and 40 A is the variable used in this research. The second variable is pH, which ranges between 6.7 and 8. The anode material used is iron, the parameters tested are pH, BOD and Phosphate. The results showed that at pH 8, a current strength of 40 A using an iron anode had a removal percentage of BOD and Phosphate of 83.52 ± 0.44% (1,358.00 mg/L) and 74.90 ± 0.98% (189. 41 mg/L). The specific energy consumption obtained for each parameter is 1.71 Wh/gBOD and 20.38 Wh/gP.
Co-Authors Aji Pangestu, Aditya Kurnia Anggrainy, Anita Dwi Arliyani, Isni Dewi Puji Rahayu Ervin Nurhayati, Ervin Fadjar Goembira Fathyah, Fathyah Fatkhasari, Yasokhi Febrianto, Arry Fitriana, Aulia Rodlia Hanh, Dang Vu Bich I.D.A.A Warmadewanthi Kalahari, Bintang La’ali, Anisah Zahira Lin, Jr-Lin Mahendra, Bara Mohammad Syaifuddin Noviani, Riskha Octavia, Lusya Sevyana Pangestu, Aditya Kurnia Aji Pratama, I Putu Eka Widya Radita, Deqi Rizkivia Raditya, Murry Rusyadi, Mughni Alvin Sidik, Fahrudin Ursada, Riang Warmadewanthi, I D A A Wicaksono, Aris Dwi Yulikasari, Andriyan Yulinah Trihadiningrum Zuhdi, Ahmed