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All Journal International Journal of Applied Power Engineering (IJAPE) International Journal of Public Health Science (IJPHS) AQUATIC SCIENCE & MANAGEMENT Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Jurnal Ilmu Lingkungan Journal of Marine Research CogITo Smart Journal JITK (Jurnal Ilmu Pengetahuan dan Komputer) Jurnal Serambi Engineering Indonesian Journal of Chemical Analysis (IJCA) Ekuilibrium : Jurnal Ilmiah Bidang Ilmu Ekonomi Region : Jurnal Pembangunan Wilayah dan Perencanaan Partisipatif Desa-Kota : Jurnal Perencanaan Wilayah, Kota, dan Pemukiman International Journal of Marine Engineering Innovation and Research Journal of Geography Science and Education Journal of Sustainable Infrastructure International Journal of Renewable Energy Development GeoEco Jurnal Kesehatan Masyarakat Biodiversitas Journal of Biological Diversity
Sapta Suhardono
Department Of Environmental Science Faculty Of Mathematical And Natural Sciences Universitas Sebelas Maret
Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences Transportation

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Inisiatif Penanaman Mangrove sebagai Upaya Mitigasi Banjir Rob di Kabupaten Kendal : Studi Literatur Anshah Silmi Afifah; Mega Mutiara Sari; Sapta Suhardono; I Wayan Koko Suryawan
Jurnal Serambi Engineering Vol 8, No 4 (2023): Oktober 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i4.6835

Abstract

Daerah pesisir Kabupaten Kendal menghadapi ancaman signifikan dari banjir rob dan abrasi. Inisiatif penanaman mangrove telah diperkenalkan sebagai solusi alami untuk mengatasi masalah tersebut. Studi literatur kualitatif ini bertujuan untuk menganalisis kekuatan, kelemahan, peluang, dan ancaman (SWOT) dari inisiatif tersebut. Hasil analisis menunjukkan bahwa mangrove memiliki peran penting dalam menjaga keseimbangan ekosistem pesisir dan bertindak sebagai benteng alami melawan abrasi. Meskipun demikian, masih ada hambatan dalam pelaksanaan dan pemeliharaan mangrove. Ditemukan potensi kolaborasi yang besar antara pemerintah, komunitas, dan organisasi lingkungan. Namun, tantangan eksternal seperti perubahan iklim dan aktivitas pembangunan berisiko mengurangi efektivitas inisiatif ini. Diharapkan kesadaran masyarakat dan dukungan lintas sektor dapat memperkuat keberlanjutan inisiatif ini.
Substitution Garden and Polyethylene Terephthalate (PET) Plastic Waste as Refused Derived Fuel (RDF) Nurulbaiti Listyendah Zahra; Iva Yenis Septiariva; Ariyanti Sarwono; Fatimah Dinan Qonitan; Mega Mutiara Sari; Pratiwi Claudia Gaina; Kuntum Khoiro Ummatin; Qurrotin Ayunina Maulida Okta Arifianti; Niswatun Faria; Jun-Wei Lim; Sapta Suhardono; I Wayan Koko Suryawan
International Journal of Renewable Energy Development Vol 11, No 2 (2022): May 2022
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2022.44328

Abstract

The generation of polyethylene terephthalate (PET) plastic and garden waste must be recycled to support the circular economy. An alternative way to reduce the plastics waste is to reduce this waste by converting it into energy such as Refused Derived Fuel (RDF) as an alternative for processing waste. Substitution of plastic and garden waste is an opportunity to be analyzed. Hence, This study aimed to investigate the potential for converting material substitution from PET and garden waste into RDF. The RDF characterized test method was carried out by proximate, water content, ash content, and analysis. At the same time, the calorific value. was tested by bomb calorimetry. Substitution of the mixture of plastic and garden waste affects each parameter of RDF pellet quality including water, ash, and caloric value (sig.< 0.05). The increase of plastic waste in pellets consistently increases the calorific value of RDF from 18.94 until 25.04 MJ/kg. The RDF pellet water and ash content also invariably affect the rate of increase in the calorific value of RDF in the multilinearity model (sig.<0.05; R2 is 0.935). The thermal stability of the pellets occurred at a temperature of 5000C decomposition of hemicellulose, cellulose, and lignin in mixed garden waste with plastic in RDF pellets. The decrease in the decomposition of PET into terephthalic acid monomer from the thermal stability of raw materials and waste PET plastic pellets occurs at a temperature of 4500˚C. This potential finding can be used as a basis for consideration in regions or countries that have the generation of garden waste and plastic, especially the type of PET to be used as an environmentally friendly fuel.
Potensi Ekonomi Pirolisis Sampah Plastik untuk Pengelolaan Berkelanjutan: Studi Kasus Plastik Pembungkus Paket Mega Mutiara Sari; Iva Yenis Septiariva; Rofiah Rofiah; I Wayan Koko Suryawan; Sapta Suhardono
Jurnal Ilmu Lingkungan Vol 22, No 4 (2024): July 2024
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.22.4.941-950

Abstract

Ketidakpedulian terhadap pencemaran sampah plastik telah mendorong eksplorasi teknologi pengelolaan limbah inovatif, seperti pirolisis plastik. Penelitian ini menyajikan analisis ekonomi dari pirolisis sampah plastik, dengan fokus pada plastik pembungkus paket, sebagai solusi potensial untuk pengelolaan limbah berkelanjutan. Melalui evaluasi komprehensif terhadap biaya, pendapatan, dan manfaat, penelitian ini menilai kelayakan ekonomi teknologi pirolisis. Hasil penelitian menunjukkan bahwa nilai ekonomi saat ini yang dihasilkan dari pengolahan sampah plastik dengan pirolisis masih di bawah batas keuntungan yang signifikan. Kesimpulan ini didasarkan pada rasio Benefit Cost Ratio (BCR) yang kurang dari 1. Penelitian ini menegaskan pentingnya mempertimbangkan efisiensi operasional, kapasitas reaktor, dan bahan baku untuk meningkatkan prospek ekonomi pirolisis sampah plastik. Penelitian ini berkontribusi pada wacana lebih luas mengenai pengelolaan sampah plastik dan memberikan wawasan bagi pengembangan lebih lanjut teknologi pirolisis dalam mencapai tujuan pengelolaan limbah berkelanjutan.
Waste Recycling Processing in Indonesian Tourist Attractions: Problems and Challenges of Implementing Legal Policies Restricting Plastic Use I Wayan Koko Suryawan; Sapta Suhardono; Mega Mutiara Sari; Iva Yenis Septiariva
Jurnal Ilmu Lingkungan Vol 22, No 4 (2024): July 2024
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.22.4.1067-1077

Abstract

Efficient waste management remains a pivotal challenge at Indonesian tourist sites. This study conducts a literature review to dissect the prevalent issues and necessary policy interventions in recycling waste within these locales. Results reveal that current policies on plastic usage are inadequately enforced, largely due to insufficient awareness and stakeholder engagement. Key barriers include a lack of infrastructure, minimal community participation in recycling initiatives, and limited regulatory oversight. To address these issues, the study suggests amplified enforcement of existing plastic regulations, enhancement of waste management infrastructure, and a boost in community involvement. The study advocates for a cohesive approach involving government authorities, tourism businesses, waste management entities, and local communities to heighten accountability and environmental stewardship. It is posited that with collective effort, waste management in Indonesian tourist spots can be significantly improved, thus yielding environmental and social dividends.
Sanitation access in the developing country: The impact of human development, income inequality, and economic growth Sapta Suhardono; Iva Yenis Septiariva; Wisnu Prayogo; I Wayan Koko Suryawan
Region : Jurnal Pembangunan Wilayah dan Perencanaan Partisipatif Vol 19, No 2 (2024)
Publisher : Regional Development Information Center, Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/region.v19i2.83327

Abstract

This study aimed to analyze the correlation between human development, income inequality, economic growth, and access to sanitation in Bali, Indonesia. The research used secondary data from the Indonesian Central Bureau of Statistics (BPS) on sanitation access, the Human Development Index (HDI), the Gini Ratio, and Gross Domestic Product (GDP) in Bali Province from 2017 to 2021. Multiple linear regression analysis was conducted to examine the relationship between these variables. The findings of the study showed that HDI has a significant positive correlation with access to sanitation in Bali, while GDP and Gini Ratio have no significant correlations. The results suggested that investing in human development is crucial for improving access to sanitation. Additionally, the study highlighted the importance of addressing income inequality and promoting sustainable economic growth in order to improve sanitation access. These findings will be important input to policy development for improving sanitation access in Bali Province and other developing regions.
Assessing the Environmental and Health Impacts of Thermal Waste and Landfill-Based Waste Management Angga Dheta Shirajjudin Aji; Sapta Suhardono; I Wayan Koko Suryawan; Wisnu Prayogo
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 21, No 2 (2024): July 2024
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v21i2.570-585

Abstract

According to Presidential Regulation No. 35 of 2018, which focuses on accelerating the development of waste-to-energy projects, Denpasar City in Bali has been identified as one of the key Indonesian cities for implementing these projects. The daily waste generation in Denpasar City is estimated at 750 tons. The city's sanitation strategy outlines that 20% of this waste will be reduced at its source, while the remaining 80% is managed at the final treatment site. This study employs the Life Cycle Analysis (LCA) approach to evaluate the environmental impacts of traditional landfilling and various thermal waste treatment methods. The findings reveal that gasification (Scenario 2) has the lowest Global Warming Potential (GWP), with 779,759 kg CO2 equivalent emitted, indicating its superiority in reducing greenhouse gases. In contrast, landfilling (Scenario 1) is the least favorable, with a GWP of 2,885,770 kg CO2 equivalent and a significant cancer risk due to hexavalent chromium emissions estimated at 1,634,050 kg equivalent. These results underscore the health and environmental hazards of landfilling. Further, the study delves into each treatment scenario's impact on acidification, eutrophication, global warming potential, and photochemical oxidation.
THE ROLE OF THE INTERNET OF THINGS (IOT) IN ELECTRIC VEHICLE MANAGEMENT AND MAINTENANCE Callista Fabiola Candraningtyas; Fikri Arkan Maulana; Sapta Suhardono
JITK (Jurnal Ilmu Pengetahuan dan Teknologi Komputer) Vol. 10 No. 4 (2025): JITK Issue May 2025
Publisher : LPPM Nusa Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33480/jitk.v10i4.6298

Abstract

The growing adoption of electric vehicles (EVs) as an eco-friendly alternative to fossil fuel-based vehicles necessitates more advanced management and maintenance systems. The Internet of Things (IoT) presents significant potential to enhance EV management by enabling real-time monitoring and data analysis through interconnected sensors and technologies. This research investigates the integration of IoT in electric vehicle systems, focusing on real-time battery health monitoring, early detection of technical issues, and route optimization for improved energy efficiency. The study employs a system design and testing approach, supported by descriptive-analytical analysis using data from case studies, literature reviews, surveys, and interviews. Findings indicate that IoT implementation in EVs yields notable advantages. Real-time battery health tracking provides accurate performance insights, achieving a 92% accuracy rate in predicting battery degradation. Technical problem detection through sensor analysis enables timely maintenance, leading to a 30% reduction in vehicle downtime. Furthermore, IoT-based route optimization improves energy efficiency, reducing energy consumption by 15% and extending battery lifespan by 20% compared to traditional systems. These results underscore the practical benefits of IoT in enhancing EV performance and operational efficiency. The system enables users and service providers to make informed decisions regarding vehicle maintenance and usage, promoting better understanding of battery conditions. Ultimately, the application of IoT technology contributes to extending battery life, minimizing vehicle downtime, and supporting broader efforts in energy efficiency and carbon emission reduction
An Analysis of Challenges, and Prospects of Overcrowding and Heritage Small Island as a Tourism Destination: Pulau Lengkang, Batam Case Study Suryawan, I Wayan Koko; Suhardono, Sapta; Septiariva, Iva Yenis; Adicita, Yosef; Prayogo, Wisnu
International Journal of Marine Engineering Innovation and Research Vol 9, No 1 (2024)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i1.19788

Abstract

This paper explores Pulau Lengkang, an island near Batam City, known for its natural beauty and cultural heritage. It examines the impact of overcrowding on its aspiration to become a prominent tourism heritage destination. The main goal is to analyze the strengths, weaknesses, opportunities, and threats Pulau Lengkang faces in its development into a renowned tourist hub, with a focus on the challenges of overcrowding and the potential for sustainable tourism. The study employs a qualitative approach, relying on thorough literature review to understand the island's unique cultural and historical aspects and the implications of increasing visitor numbers on its heritage and environment. The findings reveal that while Pulau Lengkang boasts significant cultural and historical appeal, overcrowding threatens to strain its infrastructure and dilute its heritage. However, opportunities for sustainable tourism and cultural preservation present viable pathways to enhance its tourism appeal and support local community well-being. The study suggests that adopting eco-tourism and cultural engagement strategies can help safeguard Pulau Lengkang's heritage and promote sustainable development.
Composting as a Strategy for Biodegradable Marine Debris Reduction and Management in Jakarta Sari, Mega Mutiara; Inoue, Takanobu; Harryes, Regil Kentaurus; Yokota, Kuriko; Septiariva, Iva Yenis; Suhardono, Sapta; Kato, Shigeru; Notodarmojo, Suprihanto; Suryawan, I Wayan Koko
International Journal of Marine Engineering Innovation and Research Vol 9, No 1 (2024)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i1.20047

Abstract

This study explores the potential for managing biodegradable marine debris waste in Jakarta City through composting, aiming to reduce and treat this waste effectively. In Jakarta, river debris predominantly consists of materials that degrade easily and are biodegradable. Composting represents the most straightforward method for processing this type of organic waste. The study's objective was to evaluate the feasibility of composting organic biodegradable river debris as a waste management strategy. Data collection was conducted at Emplacement Pluit, utilizing random sampling with the four quadrants method. Out of the total river debris generated daily, which amounts to 309 m³, approximately 9.07 m³/day was found suitable for composting. The composting process resulted in a significant reduction of river debris volume by 50.15% within a 30-day detention period. This process was facilitated by mesophilic microbial activity at temperatures between 30-38°C. During the first two weeks, the composting environment remained acidic until the pH stabilized to a normal range between 6.8 and 7.49. A notable observation was the high initial water content of the river debris, recorded at 53.846%, which only reduced to 42.857% by the end of the 30-day decomposition period. Therefore, a pretreatment step is recommended to optimize the water content before composting. Despite these challenges, the compost produced met the required standards set by SNI 19-7030-2004. This study underscores the importance of managing biodegradable organic waste at its source to alleviate the burden on landfills, which are currently operating beyond their capacity.
Preliminary Study on Willingness to Pay for Adaptive Management in Komodo National Park: A Contingent Valuation Approach Dendra, Syahda Hati; Sianipar, Imelda Juniaty; Rahman, Ari; Sofiyah, Evi Siti; Suhardono, Sapta; Suryawan, I Wayan Koko
International Journal of Marine Engineering Innovation and Research Vol 9, No 4 (2024)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i4.21546

Abstract

Komodo National Park (KNP), a UNESCO World Heritage Site, faces significant environmental challenges due to increasing tourism, climate change, and resource management issues. This preliminary study employs the Contingent Valuation Method (CVM) to estimate visitors' willingness to pay (WTP) for adaptive management initiatives aimed at preserving the park's unique biodiversity and ecological health. Conducted in Labuan Bajo, the main gateway to KNP, the study involved 50 respondents who were surveyed on their WTP for improved environmental quality and management. The binary logistic regression analysis revealed that higher income levels and gender significantly influence WTP, with higher income individuals and males being more likely to contribute financially. Marital status showed a negative association with WTP, suggesting that married individuals may have financial constraints. The study highlights the importance of understanding sociodemographic factors to design effective funding strategies for conservation. The findings underscore the need for targeted communication and engagement strategies to increase financial support for adaptive management. These insights will inform policy and management strategies to ensure the long-term sustainability of KNP.
Co-Authors Adhistie Fadila Setyaputri Adicita, Yosef AHMAD DWI SETYAWAN AHMAD DWI SETYAWAN AHMAD DWI SETYAWAN Ahmad Zulfikar Almira Davina Nastiti Annisa Fillaeli Annisa Kamilia Nastiti Anshah Silmi Afifah ARI PITOYO ARI PITOYO Ari Rahman Ariyanti Sarwono Aura Dhia Rizki Atthar Budiyono Budiyono Callista Fabiola Candraningtyas Callista Fabiola Candraningtyas Callista Fabiola Candraningtyas Danila Desti Ramadhani Dendra, Syahda Hati Desi Paskalia Tinambunan Evi Siti Sofiyah Fatimah Dinan Qonitan Fikri Arkan Maulana Fikri Damara Glora Ramadhani Harryes, Regil Kentaurus Harryes, Regil Kentaurus Hashfi Hawali Abdul Matin Hashfi Hawali Abdul Matin Hashfi Hawali Abdul Matin I Wayan Koko Suryawan I Wayan Koko Suryawan I Wayan Koko Suryawan I Wayan Koko Suryawan I Wayan Koko Suryawan I Wayan Koko Suryawan I Wayan Koko Suryawan I Wayan Koko Suryawan ILYAS NURSAMSI ILYAS NURSAMSI Imelda Juniaty Sianipar Imelda Masni Juniaty Sianipar Inoue, Takanobu Iva Yenis Septiariva Iva Yenis Septiariva Iva Yenis Septiariva Iva Yenis Septiariva Iva Yenis Septiariva Iva Yenis Septiariva Iva Yenis Septiariva JATNA SUPRIATNA Julianatasya Tantri Damayanti Jun-Wei Lim Kato, Shigeru Kuntum Khoiro Ummatin Kuriko Yokota Lia Kusumaningrum Lia Kusumaningrum M. Faisi Ikhwali Mega Mutiara Sari Mega Mutiara Sari Mega Mutiara Sari Mega Mutiara Sari Mega Mutiara Sari Mega Mutiara Sari Meuthia Fadila Michael Yosafaat Moh Rizal Ngambah Sagara MUHAMMAD INDRAWAN MUHAMMAD INDRAWAN Niswatun Faria Nisyawati NISYAWATI NISYAWATI Notodarmojo, Suprihanto Nur Novilina Arifianingsih Nurulbaiti Listyendah Zahra PRABANG SETYONO PRABANG SETYONO Prabang Setyono PRAKASH PRADAN Pratiwi Claudia Gaina Prayogo, Wisnu Qurrotin Ayunina Maulida Okta Arifianti Rachmat Mulyana Rahman, Ari Reifaldy Tsany Betta Aryanto Ridhosari, Betanti Rofiah Rofiah Sakkot Matua Gong Hasibuan Sari, Mega Mutiara Septiariva, Iva Yenis Septiariva, Iva Yenis Shigeru Kato Sianipar, Imelda Juniaty Silvia Verdiana Siti Rachmawati Siti Rahmawati Stacia Dea Prameswari SUGENG BUDIHARTA SUGENG BUDIHARTA SUGIYARTO SUGIYARTO SUGIYARTO SUGIYARTO Sunarhadi, M. Amin SUNARTO SUNARTO SUNARTO SUNARTO Suprihanto Notodarmojo Suprihanto Notodarmojo Suryawan, I Wayan Koko Suryawan, I Wayan Koko Suryawan, I Wayan Koko SUTARNO SUTARNO SUTARNO SUTARNO Syahda Hati Dendra Takanobu Inoue Trida Ridho Fariz Vania Maharani Rizky Pratiwi Wisnu Prayogo Wisnu Prayogo Yesaya Emeraldy Priutama Yokota, Kuriko Yoyon Wahyono Yoyon Wahyono