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All Journal Administratio : Jurnal Ilmiah Administrasi Publik dan Pembangunan Jurnal Public Policy Jurnal Teori dan Aplikasi Fisika Journal of Technomaterial Physics
Muhammad Sontang Sihotang
Universitas Sumatera Utara
Astronomy Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Physics Social Sciences Other

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Utilization of Scallop Shells (Placuna placenta) for Potential Water Filter Prototype in Jaring Halus Village, Jaring Halus-Langkat District and the Characterization Test Sihotang, Muhammad Sontang
Journal of Technomaterial Physics Vol. 4 No. 1 (2022): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v4i1.7395

Abstract

Indonesia is a maritime country that has abundant marine wealth. Unfortunately, most fishers still live in poor conditions, including Jaring Halus Village, Secanggang District, Langkat Regency, North Sumatra Province. Previous research has shown that there is much coastal waste, such as Scallop Shells (Placuna placenta), that are not treated, even though it has the potential to help people who are experiencing water crises to get clean water sources. This study aimed to characterize the shells of Scallops and produce calcium carbonate as an activated carbon product to produce clean water. The method used to characterize the mashed scallop shells is X-Ray Diffraction (XRD). In this study, three different sizes, namely 25 μm, 90 μm, and 150 μm, will be compared, and the size and quality selected to produce the best calcium carbonate were tested at different temperatures, namely 800°C, 900°C, 1000°C, and 1100°C. In the x-ray diffraction analysis test, the smallest particle is 25 μm, which has the highest intensity compared to other sizes. The best particle size, which is heated/calcined at a temperature of 1100, has the highest intensity, which can remove all impurities and produce natural calcium carbonate, which is more stable. Based on the study results, it can be concluded that the best calcium carbonate is produced from particles with a size of 25 μm which are calcined at the highest temperature of 1100°C.
Triple Helix Collaboration Model for Improving the Performance of Socio-Economic Empowerment Programs for Traditional Fishing Families in Medang Deras Dara Aisyah; Muhammad Sontang Sihotang; M Deny Effendy Tambusay
Administratio Vol 16 No 1 (2025): Administratio: Jurnal Ilmiah Administrasi Publik dan Pembangunan
Publisher : Jurusan Ilmu Administrasi Publik, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/administratio.v16i1.481

Abstract

Fishermen empowerment programs have thus far failed to sustainably improve the socio-economic conditions of fishing families. According to data from Statistics Indonesia (BPS) in 2023, the national poverty rate remains at 9.36%, far from the 0% poverty target set for 2024, with 70% of the poor population residing in coastal areas, most of whom are engaged in fishing. This failure is attributed to the government's lack of preparedness in understanding the actual conditions of coastal communities, as well as the absence of coordination with innovative university research in the design of empowerment programs. The gap between key actors has rendered intervention efforts less effective. This study aims to integrate the Triple Helix collaboration model as an innovative approach to improve the performance of socio-economic empowerment programs for traditional fishing families by utilizing local waste potential into calcium-based product innovation. The research was conducted in two hamlets of Nelayan Village, Medang Deras Subdistrict, Batubara Regency, North Sumatra, using a social engineering approach through the Participatory Action Research method over one year. The intervention involved mentoring and knowledge transfer through socialization, focus group discussions (FGDs), and training for fisher households. The findings show that the majority of fishers live in conditions of structural poverty, with daily incomes below IDR 50,000 and trapped in debt cycles with middlemen. The training and mentoring intervention on coastal waste processing into calcium-based product innovation successfully led to the formation of innovation-based fisher groups, formalized through the signing of an Institutional Arrangement (IA) with the subdistrict government, which was subsequently adopted as a policy. This study not only presents a contextually relevant collaborative model but also offers a prototype of an empowerment system that is collaborative, circular, and rooted in local needs and potential.
Analisis Efisiensi Deteksi Partikel Alfa Dengan Partikel Gamma Pada Perangkat Geiger Muller Muhammad Sontang Sihotang; Lilik Waldiansyah; David A Silaban
Jurnal Teori dan Aplikasi Fisika Vol. 13 No. 02 (2025): Jurnal Teori dan Aplikasi Fisika
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v13i02.470

Abstract

Detektor Geiger Muller (GM) adalah alat penting dalam pengukuran radiasi, tetapiefisiensinya dalam mendeteksi sinar alfa dibandingkan gamma masih belum sepenuhnya dipahami,terutama terkait pengaruh ukuran dan bahan detektor. Penelitian ini bertujuan mengevaluasi efisiensideteksi sinar alfa terhadap sinar gamma pada tiga jenis detektor GM dengan spesifikasi berbeda. Sumberradiasi Np-237 digunakan untuk menghasilkan sinar gamma, sementara sinar alfa berasal dari sumberAm-241. Aluminium foil digunakan sebagai penghalang untuk memisahkan radiasi alfa dan gamma.Tiga detektor GM dengan radius berbeda (Detektor 1: 1 8,70 mm, Detektor 2: 14,50 mm, Detektor 3:23,15 mm) diuji untuk efisiensi deteksinya. Hasil menunjukkan efisiensi deteksi sinar alfa terhadapgamma bervariasi, dengan Detektor 2 mencapai efisiensi tertinggi sebesar 3,87%, sementara Detektor1 dan 3 hanya 0,75% dan 0,87%. Variasi ini disebabkan oleh kerapatan bahan detektor yangmemengaruhi interaksi radiasi dan ukuran permukaan detektor yang memengaruhi jumlah radiasiterdeteksi. Detektor 2 yang lebih kecil memiliki optimasi efisiensi karena desain dan kerapatan yangmendukung. Efisiensi deteksi sinar alfa terhadap gamma pada detektor GM dipengaruhi oleh kerapatanbahan dan ukuran permukaan, dengan Detektor 2 menunjukkan efisiensi tertinggi sebesar 3,87%. Kata kunci: Efisiensi deteksi, radiasi alfa, radiasi gamma, detektor Geiger Muller, proteksi radiasi.
Penta Helix Collaboration in Coastal Waste Management for Sustainable Empowerment of Traditional Fishing Families Dara Aisyah; Elisa Julianti; Februati Trimurni; Muhammad Sontang Sihotang; M Deny Effendy Tambusay
Journal Public Policy Vol 12, No 1 (2026): January
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jpp.v12i1.11590

Abstract

This study implements the Penta-Helix collaborative model in an empowerment program for traditional fishing households in Medang Deras Subdistrict, Batubara Regency, North Sumatra Province, through innovative interventions in coastal waste management, transforming waste into calcium-based products. The study aims to address suboptimal coastal waste management and the economic marginalization of fishing communities. The model engages five key actors: the Batubara Regency Government, academics from the University of Sumatera Utara, the private sector represented by PT Indonesia Asahan Aluminium, traditional fishing communities, and media personnel affiliated with the Indonesian Journalists Association. Employing an action research methodology, the study began with surveys, observations, interviews, and focus group discussions with the Penta-Helix actors, followed by empowerment interventions through structured training in coastal waste management. The intervention was implemented via knowledge transfer and training across four stages: (1) collection of coastal waste, (2) processing waste into calcium powder, (3) application of innovative products to meet household needs, and (4) continuous mentoring. The findings indicate that the innovation intervention significantly enhanced local knowledge and skills, increased environmental awareness, and fostered entrepreneurial capacities within traditional fishing households. Moreover, the Penta-Helix actor collaboration successfully established innovation-driven community groups acting as ambassadors to expand the program’s impact. The study recommends institutionalizing the Penta-Helix model within regional development strategies, complemented by fiscal incentives, to strengthen inclusive and sustainable coastal economies.
Physical and Chemical Characterization of Briquettes Made from a Mixture of Butt Dust and Coconut Shell Charcoal Using Starch Binder Muhammad Sontang Sihotang; Juwita Febriani Hasibuan; Lilik Waldiansyah
Journal of Technomaterial Physics Vol. 7 No. 2 (2025): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v7i2.21410

Abstract

The global energy crisis demands the development of alternative energy sources that are environmentally friendly and sustainable. One potential solution is the utilization of industrial waste and biomass into solid fuel in the form of briquettes. This study aims to evaluate the characteristics of briquettes made from industrial waste of PT. INALUM, namely butt dust, combined with coconut shell charcoal using starch as a binder. Five variations of butt dust and coconut shell charcoal compositions were tested, namely 100:0%, 80:20%, 60:40%, 40:60%, and 20:80%. Each variation was analyzed for ash content, moisture content, volatile matter, fixed carbon, density, and calorific value. The results showed that the raw material composition influenced the physical and chemical properties of the briquettes. Briquettes with a 100:0% ratio produced the best performance, with the highest calorific value of 9431.14 cal/g, density of 0.2324 g/cm³, ash content of 2.09%, moisture content of 4.22%, volatile matter of 11.0%, and fixed carbon of 82.7%. The addition of coconut shell charcoal tended to reduce calorific value and increase ash content. These findings confirm that butt dust has great potential as the main raw material for producing high-quality briquettes. Practically, the results support the utilization of industrial waste as an alternative energy source, contributing to national energy security while reducing environmental impacts.
Co-Authors Dara Aisyah David A Silaban Februati Trimurni Julianti, Elisa Juwita Febriani Hasibuan Lilik Waldiansyah M Deny Effendy Tambusay