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All Journal Development : Studies in Educational Management and Leadership Jurnal Polimesin
Dirga, Muhammad
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Automotive Engineering Control & Systems Engineering Education Engineering Materials Science & Nanotechnology Mechanical Engineering Other

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Leadership Effectiveness: Education for Sustainable Development Yusup, Muhammad; Dirga, Muhammad; Sholeh, Rifai Hasan
Development: Studies in Educational Management and Leadership Vol. 3 No. 2 (2024): Development: Studies in Educational Management and Leadership
Publisher : Islamic Educational Management Programme

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47766/development.v3i2.4845

Abstract

This study explores the effectiveness of leadership in Education for Sustainable Development (ESD) amid growing environmental and social challenges that demand the integration of sustainability principles into the curriculum. Employing a qualitative approach through in-depth interviews and case studies at a number of institutions that have successfully implemented sustainable education practices, this study shows that effective leadership is characterized by the ability to inspire, educate, and empower the educational community. Successful leaders are able to build a shared vision and facilitate collaboration across stakeholders—students, teachers, and the community. The findings also emphasize the importance of leadership training that focuses on communication, problem-solving, and innovation skills to achieve ESD goals. Therefore, the effectiveness of leadership in ESD depends not only on formal policies but also on interpersonal skills and consistent commitment to the vision of sustainability. These findings provide practical insights for policymakers and education practitioners in designing more impactful leadership programs.  
Effect of briquetting pressure on combustion properties of hydrothermally treated king grass biomass Alchalil, Alchalil; Setiawan, Adi; Dirga, Muhammad; Riskina, Shafira; Nurjannah, Siti; Hasibuan, Rizqon; Rahman, Abdul
Jurnal Polimesin Vol 23, No 4 (2025): August
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i4.7300

Abstract

The utilization of biomass as an alternative energy source continues to gain attention, particularly in the form of solid briquettes with properties comparable to coal. In Indonesia, the co-firing program in coal-fired power plants (PLTU) promotes the use of biomass briquettes as supplementary fuel. King grass (Pennisetum purpureum), a fast-growing, non-food crop that thrives on marginal land, is a promising candidate. However, its low energy density limits practical application. This study aims to enhance the fuel quality of king grass through hydrothermal treatment and evaluate the effect of varying briquetting pressures on briquette properties. Briquettes were produced without pressure and with compaction pressures of 100, 200, 300, 400, and 500 kg/cm². Results show that higher briquetting pressure reduced moisture content from 3.99% to 2.98% and friability from 54.46% to 11.95%. While ash content and volatile matter were minimally affected, fixed carbon increased to 28.42%, and calorific value peaked at 3,923 kcal/kg. Hydrothermal treatment further improved calorific value, reduced ash content, and enhanced fixed carbon levels. These findings demonstrate that the combination of hydrothermal treatment and briquetting pressure significantly improves king grass briquette quality, supporting their potential as a sustainable co-firing fuel in coal-fired power plants.
Co-Authors Abdul Rahman Adi Setiawan Alchalil Alchalil Muhammad Yusup Riskina, Shafira Rizqon Hasibuan Sholeh, Rifai Hasan Siti Nurjannah