SDG 12 In Number
Amount of waste generated (mt)
102
Amount of waste recycled (mt)
79
Amount of waste sent to landfill (mt)
23
12.3.1 Waste Tracking
Waste Monitoring and Management to Support a Sustainable Campus
As part of its commitment to creating a sustainable campus environment, Universitas Sebelas Maret (UNS) monitors the waste generated from various activities across the university. This monitoring is an important part of waste management because it provides information on the amount and types of waste generated, as a basis for evaluation and for determining waste reduction and management measures. These efforts are in line with SDG 12: Responsible Consumption and Production, particularly in promoting efficient use of resources and reducing waste generation.
Waste Monitoring Across the University
UNS records and monitors waste as part of efforts to identify waste generation and evaluate how waste management is carried out on campus. This activity includes collecting and documenting data on waste managed through the university’s waste management mechanisms, including sorting, collection, and channeling of waste for recycling according to its type. Management coordination and data reporting are carried out by the UNS Subdirectorate of Green Campus and SDGs. The monitoring data serve as the basis for evaluating waste management, identifying opportunities to increase recycling, and supporting the development of a more effective and sustainable waste management system.
Annual Waste Data and Recycling Rate
Based on 2025 data, the total waste generated by UNS in one year was 428.46 tons, consisting of organic waste (370 tons), inorganic waste (7.03 tons), and toxic/B3 waste (51.43 tons). Of this, 370.96 tons were processed/recycled, so the processing rate reached about 86.6%, while the remaining approximately 57.50 tons were not yet processed. The 3R (reduce, reuse, recycle) program has been implemented in more than 75% of the campus, and wastewater (sewage) is treated with tertiary treatment.
Type of Waste | Total Generated (tons/year) | Total Processed/Recycled (tons/year) |
Organic Waste | 370 | 317 |
Inorganic Waste | 7.027 | 4.85 |
Toxic Waste (B3) | 51.43 | 49.11 |
Total | 428.46 | 370.96 |
Management of Organic, Inorganic, and Toxic (B3) Waste
Each type of organic, inorganic, and toxic waste receives different treatment in its recycling management. Organic waste is processed by making compost using drum composters, producing eco-enzyme from vegetables and fruits, using simple biogas reactors, and making biopores. In addition, some waste is processed into eco-print, or used to make patterns on fabrics/items from leaves and plant waste.
Organic processing through composting is also a focus of UNS research. Raharjo et al. (2025) compared activators in a rotary communal composter to optimize the composting of household waste (Journal of Ecological Engineering, 26(7), DOI: 10.12911/22998993/203526), which is relevant to efforts to increase the share of organic waste processed on campus.
For inorganic waste, a comprehensive series of processes is carried out, from sorting and collecting waste to recycling materials to turn waste into reusable products, such as construction materials and handicrafts. Used plastics are collected, cleaned, and filled with growing medium to sow seedlings. Once ready, the seedlings are planted to support green open space and the campus greening program.
Furthermore, toxic (B3) waste is handled by a third party, PT. ARAH, which is certified as a B3 waste processor and has a cooperation contract with UNS.
Transportation of B3 Waste
In this way, a direct contribution can be made to achieving SDG 12, which emphasizes the importance of sustainable waste management and reducing the ecological footprint of human activities. A data-driven approach through waste tracking helps UNS identify areas for improvement and implement targeted waste reduction strategies.
This data-driven approach is in line with Ratnadewati et al. (2025), who analyzed the role of reuse and recycling management in reducing daily waste production through a socio-economic approach and geospatial maps (International Journal of Human Capital in Urban Management, 10(2), DOI: 10.22034/IJHCUM.2025.02.02), which underscores the importance of data in determining waste reduction priorities.
Community Collaboration and SDG Impact
Throughout 2025, Universitas Sebelas Maret (UNS) continued to strengthen the role and institutional standing of the UNS Waste Bank as part of its sustainable campus waste management efforts. On February 26, 2025, to commemorate National Waste Awareness Day (HPSN) 2025 under the theme “Collaboration for a Clean Indonesia”, the UNS Waste Bank at the Faculty of Agriculture held an environmental clean-up and training on making compost and local microorganisms (MOL). The activity was carried out in collaboration with PT Pegadaian, the Indonesian Waste-Caring Golden Friends Forum (FORSEPSI) Region XI, and the Surakarta City Environmental Agency to increase public participation and promote sustainable waste management practices.
Institutional development efforts continued on May 7, 2025, through an initial coordination meeting on developing the UNS Campus Waste Bank, led by Prof. Dr. Ir. MMA Retno Rosariastuti together with the Subdirectorate of Green Campus and SDGs. The meeting discussed various operational aspects, including personnel management, mechanisms for converting waste into economic value, the types of waste accepted, outreach strategies, and plans for expanding service locations on campus. This development is directed at reducing the volume of waste sent to final disposal sites (TPA), optimizing waste utilization, including the potential to process organic waste into biogas, and making the waste bank a means of education and learning for the academic community and the public.
On September 9, 2025, UNS continued these efforts through a discussion on the proposal for establishing and managing the UNS Waste Bank, involving the waste bank formation team, the UNS Green Campus team, and students. The discussion focused on identifying the existing condition of waste generation at UNS, alternatives for organic waste management, and the handling of inorganic waste, particularly plastic. The results of the discussion became the foundation for preparing a more focused and measurable campus waste management plan involving various stakeholders.
The role of waste banks in universities is supported by Saputri et al. (2025), who analyzed the role of university waste banks in raising students’ environmental awareness (IOP Conference Series: Earth and Environmental Science, DOI: 10.1088/1755-1315/1462/1/012040), so that the development of the UNS Campus Waste Bank serves not only as a processing facility but also as a learning facility.
UNS’s commitment to strengthening the campus waste management system continued on March 2, 2026, when the Rector issued Rector’s Decree Number 718/UN27/HK.02/2026 on the Team for the Development of the UNS Integrated Waste Processing Site (TPST) for 2026. The establishment of this team is an institutional step to support infrastructure development and the coordination of integrated waste management across the university.
This series of initiatives is in line with the Sustainable Development Goals (SDGs), particularly SDG 12 (Responsible Consumption and Production), by strengthening the waste management system, reducing waste generation, and increasing the reuse of resources. Collaboration among UNS, local government, businesses, community organizations, and students also supports SDG 17 (Partnerships for the Goals), while strengthening the role of higher education in driving behavior change and sustainable waste management practices at the local level.
This initiative is part of UNS’s long-term commitment to achieving zero waste. Through developing the waste bank, strengthening TPST infrastructure, and monitoring the amount and types of waste generated, UNS seeks to identify opportunities for waste reduction, increase recycling, and optimize resource utilization. Waste tracking is an important instrument for evaluating progress in waste management on an ongoing basis, setting improvement priorities, and supporting data-driven decision making. With this approach, UNS continues to promote more effective and efficient waste management as part of efforts to gradually achieve the zero waste target.
SDG 12 Indicator
Operational Measures
Proportion Of Recycled Waste
Publication Of A Sustainability Report
Policy | Link | Summary | Relevant Articles |
|---|---|---|---|
Presidential Regulation Number 12 of 2021 on Amendments to Presidential Regulation Number 16 of 2018 on Government Procurement of Goods/Services | Presidential Regulation Number 12 of 2021 on Amendments to Presidential Regulation Number 16 of 2018 regulates the mechanism for Government Procurement of Goods/Services for ministries, institutions, and regional governments in order to realize the principles of effectiveness, efficiency, transparency, accountability, and sustainability. This regulation emphasizes the value for money principle, the obligation to use domestic products, and the empowerment of Micro Enterprises, Small Enterprises, and Cooperatives. Within the framework of Sustainable Procurement, the procurement process is directed to consider economic, social, and environmental aspects throughout the usage cycle. Procurement is carried out through structured methods, supported by competent Human Resources (HR), adequate oversight, and the enforcement of procurement ethics to maintain professionalism, prevent conflicts of interest, and eradicate corruption, collusion, and nepotism. This regulation serves as the main guideline for government agencies, including State Universities, in applying transparent, ethical, and sustainable procurement of goods and services. |
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Rector’s Regulation of Universitas Sebelas Maret Number 38 of 2021 on Guidelines for the Procurement of Goods and Services of Universitas Sebelas Maret | This regulation stipulates that all procurement processes at UNS must be carried out efficiently, effectively, transparently, and accountably, with a focus on achieving the best value for money. In addition, this regulation emphasizes the importance of applying procurement ethics, preventing unfair competition and conflicts of interest, and promoting the principle of sustainability (sustainable procurement) by integrating economic, social, and environmental aspects across all stages of procurement. | Article 2: Affirms the principles and objectives of procurement at UNS to ensure that the procurement of goods and services is effective, efficient, transparent, and accountable. | |
Rector’s Instruction of Universitas Sebelas Maret Number 32 of 2023 on Global Climate Change Mitigation and Adaptation at Universitas Sebelas Maret | Rector’s Instruction of Universitas Sebelas Maret Number 32 of 2023 contains strategic directions for all work units and the academic community at Universitas Sebelas Maret (UNS) to carry out measures for mitigating and adapting to global climate change. One of its main focuses is reducing the vulnerability of the campus community through comprehensive waste management and reduction that applies the principles of Reduce, Reuse, Recycle, and Composting | Fourth Instruction | |
Circular Letter Number 2190.2/UN27/HK.06/2023 on the Use of Sustainably Farmed Food Ingredients at Universitas Sebelas Maret | Circular Letter Number 2190.2/UN27/HK.06/2023 contains an official appeal from the leadership of Universitas Sebelas Maret (UNS) to all heads of work units on campus. This circular aims to encourage managers, canteen owners, and cafeteria operators at UNS to prioritize food ingredients that come from sustainable agricultural practices (sustainable agriculture), in order to support the health of the academic community and the sustainability of the campus environment. | Key Points of the Appeal: Requires/encourages managers of food-providing facilities (canteens and cafeterias) at UNS to prioritize the supply of food ingredients from sustainable agriculture as part of the Green Campus commitment. |
On Wednesday, January 22, 2025, the Faculty of Information Technology and Data Science (Fatisda) of UNS in Surakarta launched the development of an Integrity Zone (ZI) toward a Corruption-Free Area (WBK) and a Clean and Service-Oriented Bureaucracy Area (WBBM). The event was attended by eight stakeholder groups: the Rector, the Chair of the faculty Academic Senate, the Director of the ICT Directorate, the Communication and Informatics Offices (Diskominfo) of Karanganyar and Sragen Regencies, BPS Surakarta, the heads of study programs, and lecturers. The program included the Rector’s opening remarks, a report from the faculty leadership, the launch declaration, and the signing of the Integrity Pact by all lecturers and education staff. The pact contains a commitment not to engage in corruption, collusion, and nepotism for personal or group gain that harms the institution and the state. This step is important for procurement because the faculty is a budget user that determines needs and specifications. Integrity commitments at that stage safeguard fair competition in the subsequent provider selection process. The faculty, established in 2022 and overseeing three study programs (S-1 Informatics, S-1 Informatics PSDKU Kebumen, and S-1 Data Science), continues a commitment that was begun while it was still part of the Faculty of Mathematics and Natural Sciences (FMIPA).
Participants and guests at the launch of the Integrity Zone (ZI) at the Faculty of Information Technology and Data Science (Fatisda)
(https://uns.ac.id/id/uns-update/fatisda-uns-canangkan-zona-integritas-menuju-wbk-dan-wbbm.html)
The Rector, Prof. Dr. Hartono, dr., M.Si., affirmed that the main goal of the Integrity Zone is to ensure excellent service for all users and that UNS will continue to improve services in every faculty and unit. The Dean of Fatisda, Dr. Wiranto, M.Kom., M.Cs., stated a commitment to developing strong integrity values while supporting national digital transformation, while the Vice Dean, Prof. Dr. Wiharto, S.T., M.Kom., emphasized that this launch continues commitments that were already under way.