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All Journal Konversi Proceeding International Conference on Digital Education and Social Science
Rudy Heryadi
Universitas PGRI Kalimantan
Computer Science & IT Economics, Econometrics & Finance Education Engineering Social Sciences

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Mitigation Strategies and Economic Potential of Waste Resource Recovery in Banjarbaru City, South Kalimantan Rudy Heryadi; Fujianor Maulana; Difo Miftahul Faridl; Hendera
Proceeding International Conference on Digital Education and Social Science Vol. 3 No. 1 (2025): Proceeding International Conference on Digital Education and Social Science 202
Publisher : Asosiasi Pengelola Publikasi Ilmiah (APPI) PT PGRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55506/icdess.v3i1.151

Abstract

The global challenge of municipal solid waste management (MSW) has reached a critical turning point, requiring urgent action from cities worldwide. Banjarbaru, Indonesia, as the dynamic capital of South Kalimantan, also needs to take action to address MSW-related problems. Official data indicate that approximately 191 tonnes of MSW are generated per day, and this amount will increase exponentially as the city grows. This study aims to project waste generation through 2030, identify waste recovery strategies focused solely on organic waste and high-value recyclables, and assess their economic potential. The method used in this study is the bottom-up estimation method, which is the standard for waste management feasibility studies. Waste generation is projected to grow exponentially to approximately 257 tonnes per day by 2030. There is a lucrative annual revenue stream of IDR 30.6 billion from improved waste management in Banjar Baru, South Kalimantan. This potential can serve as an alternative to the waste management challenge and help transform it into a circular economy model.
Process simulation of green ammonia production from oil palm frond (OPF) waste via gasification: a technical feasibility study Heryadi, Rudy; Hendera, Hendera
Konversi Vol 15, No 1 (2026): APRIL 2026
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v15i1.25112

Abstract

Indonesia, as a leading palm oil producer, generates massive quantities of Oil Palm Frond (OPF) waste that are currently underutilized, especially in Kalimantan and Sumatra. This study evaluates the technical feasibility of converting OPF biomass into green ammonia as a sustainable fuel alternative. A steady-state process simulation was developed using Aspen Hysys that integrates biomass gasification, syngas cleaning, a Water-Gas Shift (WGS) unit, and a high-pressure ammonia synthesis loop. Based on a feedstock input of 16,000 kg/h, the simulation yielded an ammonia production rate of 8,381 kg/h, achieving a biomass-to-ammonia conversion ratio of approximately 1.9:1. The product purity reached 97.18 mol% (equivalent to 98–99 wt%), meeting industrial standards for commercial applications. Plant performance analysis indicated an energy conversion efficiency of 55% and a specific energy consumption of 1.03 kWh/kg NH3 across the compression and synthesis sections. These results confirm that the gasification of OPF is a technically viable pathway for green ammonia production, offering a promising solution for biomass waste management and supporting Indonesia's transition toward renewable energy.
Co-Authors Difo Miftahul Faridl Fujianor Maulana Hendera Hendera, Hendera