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All Journal Jurnal Sumberdaya Alam dan Lingkungan Jurnal Dampak AJIE (Asian Journal of Innovation and Entrepreneurship) Jurnal Teknologi Lingkungan Lahan Basah Formosa Journal of Social Sciences (FJSS) Journal Serambi Engineering (JSE)
Widyarsana, I Made Wahyu
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Agriculture, Biological Sciences & Forestry Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Public Health Social Sciences

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Quality Improvement of Refuse-Derived Fuel from Landfilled Waste Using Solar Greenhouse Biodrying System Sevina, Raisa; Widyarsana, I Made Wahyu; Wulandari, Suci
Dampak Vol. 21 No. 2 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/dampak.21.2.34-40.2024

Abstract

Final Disposal Sites (landfills) serve as the endpoint in the municipal solid waste management system, functioning as the final destination for our daily waste. Currently, Indonesia is experiencing a waste crisis due to the continuously increasing volume of waste generation, which leads to the rapid overfilling of landfill sites. One of the potential solutions for utilizing landfill waste is the production of Refuse-Derived Fuel (RDF), an alternative fuel derived from solid waste. However, waste that has been buried in landfills generally contains high moisture content, rendering it unsuitable for immediate RDF application. The calorific value of RDF depends greatly on its moisture content, with higher moisture levels resulting in lower energy output. Therefore, a pre-treatment process in the form of drying is necessary to reduce moisture content and optimize the fuel quality of RDF. This study applies the Solar Greenhouse Biodrying (SGB) method as a waste drying technology that combines heat from solar radiation with biological heat generated during aerobic degradation. This method was selected due to its suitability to Indonesia’s tropical climate and its potential for large-scale application without requiring high external energy input. The waste material used in this study was obtained from landfill waste excavated at a depth of 3 meters, with an estimated age of approximately 9 years. In this study, a mixture of fresh waste and excavated landfill waste was dried using various composition ratios: 1:0 (control), 1:1, 1:2, 1:3, and 1:4. The results show that the SGB method effectively reduced moisture content by 27–62.2% and increased the calorific value to a range of 7.5–14 MJ/kg. The waste composition ratio significantly influenced moisture reduction, with the most optimal result found at a 1:2 ratio, which provided the best balance between drying efficiency and energy enhancement. These findings indicate that the SGB method is an effective alternative for waste drying prior to further utilization as RDF. Keyword: landfill mining, solar greenhouse biodrying, refuse-derived fuel, municipal solid waste, moisture content
Analisis Variabel Penentu Keberlanjutan TPA Jalupang Kabupaten Karawang: Perspektif Masyarakat melalui Structural Equation Modeling (SEM): Indonesia Dewi, Ninne Sevtiana; Widyarsana, I Made Wahyu
Asian Journal of Innovation and Entrepreneurship Volume 09, Issue 03, September 2025
Publisher : UII

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ajie.vol9.iss3.art5

Abstract

Jalupang Landfill is the only official final disposal facility in Karawang Regency, which is still operated using an open dumping system. This management practice has created several environmental issues, including a fire incident in October 2023, and has raised concerns about the sustainability of its operations. This study was conducted to identify the variables that influence the sustainability of Jalupang Landfill by employing a reflective Structural Equation Modeling (SEM) approach. Primary data were collected through questionnaires distributed to 100 respondents across nine districts who are involved in waste transportation to the landfill. The questionnaire applied a Likert scale and was analyzed using SmartPLS 4.0 through a series of tests, including model fit, construct validity, and path coefficient analysis. The results indicated that the developed model met the fit criteria, with an R² value of 0.622 or 62.2%. The regulatory variable was found to be the most dominant factor, with a path coefficient of 0.400 (p-value = 0.002), followed by the financing variable with a coefficient of 0.286 (p-value = 0.041). These findings highlight that the sustainability of Jalupang Landfill is largely determined by strengthening regulatory aspects and ensuring adequate financial support.
Public Intention to Use Reusable Menstrual Products and Their Impact on Menstrual Pads Waste Reduction in Dki Jakarta Zahira, Cletra Halla; Widyarsana, I Made Wahyu; Rachmatiah , Indah
Formosa Journal of Social Sciences (FJSS) Vol. 2 No. 4 (2023): December, 2023
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/fjss.v2i4.7869

Abstract

Single-use menstrual waste is a serious issue since they consist of ingredients that make it difficult to biodegrade and are contaminated with blood and other bodily fluids, that could possibly contaminate other waste. Most women in DKI Jakarta still use single-use menstrual pads despite the availability of reusable alternatives. With the Theory of Planned Behavior, this study analyzed factors that affects intention to use reusable menstrual products, as well as the possible waste generation from various menstrual products and reccomendations for their management in DKI Jakarta. This study applied quantitative methods using online survey to 448 participants. Factors that positively influence intention to use reusable menstrual products are Subjective norm, Perceived behavioral control, and Attitude (sig. < 0.05), while Knowledge has no significant influence (sig. > 0.05). Attitude is the factor with most contribution (sig. < 0.001) with highest beta value of 0,415. DKI Jakarta could potentially generate 42,072,587.52 kg/year of menstrual pads waste; 73.91 kg/year of menstrualcups waste; and 4,909.08 kg/year of reusable pads waste. Recommendations given are the shifting of single-use menstrual products users to reusable menstrual products to reduce single-use menstrual products waste and improving the waste management system for single-use menstrual pads waste in DKI Jakarta
Optimizing Organic Waste Management Using Black Soldier Fly Larvae: A Financial Perspective Widyarsana, I Made Wahyu; Ramadhini, Dehan Nabiilah; Muflihah, Lilih; Utami, Inayah Wiji; Yulianti, Yulianti
Jurnal Sumberdaya Alam dan Lingkungan Vol 12, No 3 (2025)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jsal.2025.012.03.1

Abstract

The use of Black Soldiet Fly (BSF) in processing organic waste offers numerous benefits, including significant waste volume reduction, transformation of waste into value-added products such as organic fertilizers, livestock feed, and fish feed, as well as supporting the implementation of a circular economy. However, organic waste processing practices in BSF larvae or what is more widely known as maggot with maggot houses often face challenges, particularly in terms of funding. Financial factors are crucial elements that determine the operational sustainability of such waste management systems. This study aims to analyze the financial conditions and operational feasibility of Rumah Maggot Cimincrang and Imah Maggot Bantaran. The study employs the Net Present Value (NPV) method, which calculates the present value of total net revenues after deducting costs over a specific period. NPV serves as a tool to assess the financial feasibility of an activity. If the NPV is positive, the activity is considered financially feasible and profitable. The results indicate that the operational feasibility of Rumah Maggot Cimincrang can be achieved through product diversification, such as producing maggot meal and maggot oil, alongside optimizing marketing efforts via digital platforms like e-commerce with a NPV of IDR 161,769,698. Meanwhile, Imah Maggot Bantaran, which operates on a community-based model, is already financially viable with an NPV of IDR 4,333,190,208. However, further efforts are needed to enhance operational consistency, ensuring the production of sustainable products over the long term.
Analisis Strategi Pengelolaan Sampah di Kota Cimahi dengan Kerangka SOAR Muflihah, Lilih; Widyarsana, I Made Wahyu
Jurnal Serambi Engineering Vol. 11 No. 1 (2026): Januari 2026
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Population growth and metropolitan activity in Cimahi City, with a population of 598,698 residents in 2024, and with a waste composition dominated by organic materials, have heightened the need for a more effective waste management system. Sarimukti Landfill, which serves as the regional disposal site for Greater Bandung, has exceeded its capacity, requiring compliance with disposal capacity limits within its service coverage. Given the limited land availability and high population density, optimizing existing waste management facilities has become the most relevant and feasible strategy. This study aims to formulate sustainable waste management strategies for Cimahi City by identifying strategic factors using the SOAR framework. Data were collected through semi-structured interviews and direct observations with stakeholders involved in waste management in Cimahi City. The SOAR approach was selected to explore strengths, opportunities, aspirations, and expected results, thereby producing a strategic mapping that emphasizes stakeholder collaboration. Based on the SOAR analysis, the Strength–Aspirations (SA) strategy demonstrates the greatest implementation potential, comprising efforts to strengthen waste-sorting literacy and practices, develop standardized SOPs, enhance inter-agency coordination, innovate volume-based financing schemes and digital service channels, and reorganize operational systems toward sustainability.
Analisis Faktor yang Berpengaruh terhadap Extended Producer Responsibility Sampah Elektronik di Indonesia Widyarsana, I Made Wahyu; Nurawaliah, Hanifah; Wulandari, Suci; Sevina, Raisa
Dampak Vol. 23 No. 1 (2026)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/dampak.23.1.13-24.2026

Abstract

Volume sampah elektronik (e-waste) yang terus meningkat di Indonesia telah memperkuat urgensi penerapan kerangka Extended Producer Responsibility (EPR). Namun, keberhasilan kebijakan tersebut bergantung pada kemampuan untuk mengidentifikasi serta memprioritaskan faktor-faktor kunci yang mempengaruhi pelaksanaannya. Penelitian ini bertujuan untuk menganalisis elemen-elemen yang mempengaruhi penerapan EPR terhadap sampah elektronik di Indonesia dengan menggunakan metode Analytic Network Process (ANP), yaitu suatu metode pengambilan keputusan multikriteria yang mampu menganalisis saling keterkaitan di antara faktor-faktor kompleks. Data diperoleh melalui wawancara dan kuesioner terstruktur yang melibatkan para pemangku kepentingan dari unsur pemerintah, produsen, akademisi, serta masyarakat sipil. Hasil penelitian menunjukkan bahwa instrumen administratif merupakan faktor yang paling berpengaruh dalam mendukung penerapan EPR yang efektif (bobot: 0,368), diikuti oleh instrumen ekonomi (bobot: 0,362) dan instrumen informasi (bobot: 0,271). Di dalam masing-masing kategori tersebut, sistem pengumpulan sampah elektronik (bobot: 0,387), subsidi pengembangan produk (0,278), dan kegiatan sosialisasi kepada produsen (bobot: 0,332) muncul sebagai subkriteria utama. Lebih lanjut, penelitian ini menyoroti peran penting Producer Responsibility Organizations /PRO (bobot: 0,343) dalam mengkoordinasikan para pemangku kepentingan serta memastikan kepatuhan terhadap kebijakan. Berdasarkan hasil prioritas tersebut, artikel ini mengusulkan arah kebijakan bagi Indonesia yang mengintegrasikan reformasi regulasi, mekanisme pembiayaan berkelanjutan, dan keterlibatan strategis para pemangku kepentingan. Temuan ini memberikan panduan yang dapat ditindaklanjuti bagi para pembuat kebijakan dalam mengembangkan sistem EPR yang tangguh dan inklusif untuk menghadapi dampak yang ditimbulkan oleh sampah elektronik
Analisis Potensi Pengelolaan Sampah Domestik Skala Mikro di Kecamatan Johar Baru, Jakarta Pusat Widyarsana, I Made Wahyu; Ningrat, Boy Cakra; Dewi, Ninne Sevtiana
Jurnal Teknologi Lingkungan Lahan Basah Vol 14, No 1 (2026): January 2026
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jtllb.v14i1.97037

Abstract

Waste management in the Johar Baru District of Central Jakarta faces significant challenges related to infrastructure, public awareness, and resource constraints. This study aims to analyze the generation, composition, and characteristics of domestic waste, and to evaluate the effectiveness of the implemented waste management policies. The methodology includes a quantitative analysis of waste samples collected over eight consecutive days and laboratory analysis to determine waste characteristics. The results indicate that food waste dominates the waste composition (50.6%), followed by paper and plastic. The waste characteristics in the Johar Baru District show an average moisture content of 65.28% and an average ash content of 89.29%. Waste management policies, such as establishing waste banks and using small vehicles for waste collection, have shown positive results, although their implementation remains limited. Potential waste management initiatives include composting, vermicomposting, Black Soldier Fly (BSF) technology, and plastic recycling. To improve management effectiveness, a more intensive approach to education and increasing public participation is necessary.
Evaluasi Keberlanjutan Tempat Pemrosesan Akhir Cikundul Kota Sukabumi dengan Metode Multi-Dimensional Scaling RAPWASTE Erlangga, Edo; Fithriyyah, Nadiyatul; Yulliandra, Zahra; Mustafiq, Faqih; Widyarsana, I Made Wahyu
Jurnal Serambi Engineering Vol. 11 No. 2 (2026): April 2026
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Penghapusan praktik open dumping merupakan prioritas utama kebijakan pengelolaan sampah perkotaan di Indonesia. Penelitian ini mengevaluasi keberlanjutan pengelolaan Tempat Pemrosesan Akhir (TPA) Cikundul, Kota Sukabumi, yang masih beroperasi dengan sistem open dumping. Penilaian dilakukan menggunakan metode Multi-Dimensional Scaling (MDS) melalui perangkat RAPWASTE, dengan melibatkan 20 responden kunci (n = 20) yang terlibat langsung dalam pengelolaan TPA. Analisis mencakup enam dimensi keberlanjutan, yaitu teknis operasional, pembiayaan, kelembagaan, regulasi, sosial/partisipasi masyarakat, dan lingkungan. Hasil analisis menunjukkan seluruh dimensi berada pada kategori cukup berkelanjutan, dengan nilai indeks antara 51,77–63,45. Dimensi lingkungan memiliki kinerja relatif terbaik, sementara dimensi pembiayaan dan teknis operasional masih menjadi aspek paling lemah. Analisis sensitivitas mengidentifikasi teknologi dan sistem operasional TPA, biaya penambahan kapasitas sel, implementasi SOP, struktur kelembagaan, partisipasi masyarakat dalam pengurangan sampah, serta pengendalian vektor penyakit sebagai faktor kunci penentu keberlanjutan. Temuan penelitian menegaskan bahwa peningkatan keberlanjutan TPA memerlukan perbaikan teknis, reformasi pembiayaan, penguatan SOP, dan tata kelola kelembagaan guna mendukung transisi menuju sanitary landfill dan mencapai target nasional penghapusan open dumping pada periode 2025–2029.
Co-Authors Dewi, Ninne Sevtiana Erlangga, Edo Fithriyyah, Nadiyatul Muflihah, Lilih Mustafiq, Faqih Ningrat, Boy Cakra Nurawaliah, Hanifah Rachmatiah , Indah Raisa Sevina Ramadhini, Dehan Nabiilah Suci Wulandari Utami, Inayah Wiji Yulianti Yulianti Yulliandra, Zahra Zahira, Cletra Halla