Magelang, May 2026 – Students enrolled in the Bioenergy Engineering course from the Agricultural Machinery and Energy Laboratory, Department of Agricultural and Biosystems Engineering, Faculty of Agricultural Technology, Universitas Gadjah Mada (UGM), successfully conducted a field practicum focusing on the implementation of biogas and steam boiler technologies in the tofu production center of Sambak Village, Kajoran District, Magelang Regency. The activity aimed to provide students with an in-depth understanding of practical bioenergy applications while identifying technological needs within local communities.
The field practicum was supervised by a team of lecturers consisting of Dr. Radi, S.T.P., M.Eng., Dr. Sri Markumningsih, and Dr. Andri Prima Nugroho, Head of the Agricultural Machinery and Energy Laboratory and Coordinator of the Knowledge-Based Group (KBK). The activity also involved technicians Marheriyanto and Suryatmi, five teaching assistants, and fifteen undergraduate students.
Converting Tofu Waste into Biogas
The first site visited was a tofu factory in Sambak Village that has successfully implemented biogas technology. Students observed firsthand how wastewater from four tofu factories is collectively collected and processed in a shared digester to produce biogas. The resulting gas is then utilized by the local community as an alternative energy source.
The village hamlet head provided a comprehensive explanation regarding the capacity, planning, operation, and maintenance of the biogas installation, followed by an interactive discussion session with the students.
This initiative represents a tangible example of SDG 7 (Affordable and Clean Energy) by providing access to renewable energy for the community. It also aligns with SDG 12 (Responsible Consumption and Production) through waste valorization and SDG 13 (Climate Action) by reducing methane emissions from organic waste.
Practicum students listen to an explanation from the Hamlet Head regarding the tofu production process and the utilization of tofu wastewater for biogas production.
Improving Tofu Production Efficiency with Steam Boiler Technology
The second visit was conducted at another tofu factory that has adopted steam boiler technology for the tofu cooking process. Students had the opportunity to directly observe the cooking process using steam boilers, which has proven to improve production efficiency, reduce material losses, and minimize scale formation.
Discussions with the factory managers provided valuable insights into the operational and maintenance aspects of steam boiler systems.
The adoption of steam boiler technology supports SDG 9 (Industry, Innovation, and Infrastructure) by promoting sustainable industrialization and innovation while improving resource efficiency in tofu production.
Benefits of the Field Practicum
The field practicum provided numerous benefits for students, including:
- Understanding Bioenergy Applications: Students gained firsthand experience in applying bioenergy technologies in real-world settings.
- Identifying Technological Needs: The activity enabled students to recognize technological challenges and opportunities within local communities.
- Enhancing Public Communication Skills: Students developed skills in communicating with communities, analyzing problems, and presenting innovative ideas.
This activity not only enriched students’ technical knowledge but also strengthened their awareness of the importance of creating Sustainable Cities and Communities (SDG 11) through renewable energy solutions and effective waste management.
