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The waste problem is still an environmental issue that requires serious attention, especially regarding the low level of public awareness in sorting organic and inorganic waste at its source. Environmental education needs to be given from an early age to form attitudes and behavior that care for the environment in a sustainable manner. This community service activity aims to increase the understanding and awareness of grade III–IV elementary school children towards sorting organic and inorganic waste through a game-based learning approach. The activity was carried out in the Bojongsari area, Depok, involving 10 children as participants. The methods used include delivering interactive material, waste sorting competitions through the Eco-Race Little game, and making mini posters with environmental themes. The results of the activity showed that around 90% of participants were able to differentiate and sort organic and inorganic waste correctly. Apart from increasing cognitive understanding, this activity also fosters an attitude of cooperation, creativity and concern for the environment. Thus, the Little Eco-Race activity is considered effective as a fun and applicable environmental education model for elementary school age children.

The Checksheet process at PT. Automotive component companies are an important activity to maintain quality consistency in the production of automotive components, especially brackets. However, the inspection method that is still carried out manually causes waste of time, high use of paper, and increased operational costs. This study aims to reduce the cycle time of Patrol Check A-T-A, implement a digital (paperless) recording system, and improve process efficiency through the PDCA (Plan-Do-Check-Act) approach, Fishbone Diagram, and Why-Why Analysis. The results of the identification of the root of the problem show that the absence of a standardized digital system and the lack of management initiatives are the main causes of the long inspection process and high paper consumption. The implementation of E-Checksheet as a digital solution resulted in a significant reduction in cycle time, from 50 minutes to 10 minutes, as well as eliminating paper use by up to 100%. In addition, workflows become simpler, data is easier to monitor, and processes become more efficient. This study concludes that the digitization of Checksheet is able to increase operational effectiveness, reduce waste, and support continuous improvement in the manufacturing environment.

Urban waste management remains a major challenge in achieving a clean and sustainable environment, including in Bontoduri Sub-district, Makassar City. Waste banks, as a community-based waste management model, have significant potential to reduce waste generation while creating economic value. However, in practice, the role of waste banks has not been fully optimized due to limitations in institutional capacity, community participation, and managerial practices. This community service activity aimed to strengthen the role of waste banks in promoting a clean and economically valuable environment through participatory and community empowerment approaches. The methods employed included preparation, environmental education and socialization, waste bank management training, institutional mentoring, and activity evaluation. The program involved approximately 30 participants consisting of waste bank managers, local government representatives, and community members. The results indicated an increase in community awareness and understanding of waste segregation, improved managerial and administrative capacities of waste bank operators, and enhanced community participation in waste-saving activities. In addition, waste banks contributed to generating added economic value from household waste and reducing the volume of waste disposed of into the environment and landfills. This activity concludes that strengthening the role of waste banks through education, training, and continuous mentoring can serve as an effective strategy to support sustainable urban waste management based on circular economy principles.

Current human activities are the cause of the accumulation of waste. Waste generated from community activities can come from households, agriculture, offices, industry, and so on. Based on previous research, waste that is not properly handled will cause environmental damage, produce odors, and risk the spread of diseases that are agents or sources of infection that cause stunting in children. The purpose of this community service is to provide education on waste management to prevent cases of stunting in children. The methods used in the educational activities are lectures and question and answer sessions. Composting training is conducted using a practical method. Educational media used leaflets and composting practice materials using household waste leftovers from the community service targets. The target community service was 20 housewives in the Caturharjo area. The results obtained are that the education and practice were implemented well and smoothly. The community provided a positive response to the material provided in the form of questions and answers after the educational material. There was a change in composting skills among the community members. The conclusion of this community service activity was an increase in knowledge and skills in processing household waste into composter.

Household waste management remains a major challenge in rural areas, including Sunggumanai Village, Pattallassang District, Gowa Regency. Low public awareness and the absence of a structured community-based waste management system have negatively affected environmental quality and public health. This community service activity aimed to enhance community knowledge, awareness, and participation through the socialization of community-based waste management toward a clean and healthy environment. The activity was conducted on September 27, 2025, involving 30 participants consisting of community representatives, housewives, youth, and community leaders. The methods applied included educational socialization, participatory discussions, and waste segregation simulations based on the 3R principles (Reduce, Reuse, Recycle). The results indicated an improvement in participants’ understanding of waste types, the environmental and health impacts of improper waste management, and the importance of collective waste management practices. Participants also demonstrated positive attitudes and readiness to implement household waste segregation, as well as emerging ideas for establishing community-based waste management initiatives. In conclusion, this activity proved to be an effective initial step in promoting behavioral change toward sustainable waste management and supporting the creation of a clean and healthy village environment.

UMKM BPK Legend Batam is a Batak culinary business that serves Karo Roast Pork (BPK) as its main dish along with side dishes such as soup, saksang, and fried Indomie B2. In its operational activities, food product inventory management is still done manually and based on estimates, which can potentially lead to excess or shortages of ready-to-sell products. This situation can result in a decline in product quality, wasteful spending, and lost sales opportunities when demand increases. The objective of this community service activity is to design a more effective and efficient food product inventory control system through the application of the EOQ and ROP methods. The methods used include observation, interviews, and analysis of sales data and product availability per period. The results of the activity show that the application of EOQ is able to determine the optimal product inventory quantity, while ROP provides guidelines for the right time to replenish products. The product inventory control system that was designed helps BPK Legend MSMEs in reducing inventory costs, maintaining product availability, and supporting smooth service to customers.

Community Service Program (KKN) is an implementation of the Tridharma of Higher Education aimed at dedicating knowledge and technology to society. This article analyzes the implementation of the KKN program by students of Universitas Trunodjoyo Madura Group 30 in Buddagan Village, Pademawu District, Pamekasan Regency, focusing on community empowerment through aspects of environment, education, entrepreneurship, and village digitalization. The activities were carried out using a participatory approach with observation techniques, interviews, and discussions with the community and village stakeholders. The flagship programs include the socialization of used cooking oil for making aromatherapy candles, installation of environmental education plaques, anti-bullying socialization at SDN Buddagan 2, and the creation of the official social media for Buddagan Village. The results show an increase in community awareness, especially among PKK mothers, regarding the health and environmental dangers of used cooking oil and the potential for a creative economy based on domestic waste. The anti-bullying program successfully instilled empathy and mutual respect values in students, while the village digitalization strengthened public access to information and a positive village image. The KKN program in Buddagan Village has had a positive impact on social behavior changes in the community and serves as a model for sustainable community service.

Proton Exchange Membrane Fuel Cells (PEMFCs) are increasingly developed due to their high efficiency, power density, durability, and environmental friendliness. However, the high cost of platinum catalysts limits their widespread application. Reducing platinum usage through the development of low-cost catalyst support materials is a promising approach. Activated carbon derived from biomass offers a sustainable and economical alternative, particularly when utilizing agricultural waste such as coffee husks, which are often discarded. This study aims to evaluate the characteristics of activated carbon produced from coffee husk waste through pyrolysis as a catalyst support for PEMFCs. Pyrolysis was conducted at 400 °C, followed by chemical activation using 1 M H₃PO₄ and 1 M KOH with a residence time of 90 minutes. The resulting activated carbon was analyzed through proximate analysis to determine moisture content, ash content, volatile matter, and fixed carbon content. The results showed that activation with 1 M H₃PO₄ produced the lowest moisture content (3.4%), the lowest ash content (3.8%), and the highest fixed carbon content (60.5%), while 1 M KOH yielded the lowest volatile matter content (27.7%). Based on these results, activated carbon produced using H₃PO₄ meets the requirements of SNI No. 01/6235/2000 and demonstrates strong potential as a catalyst support material for PEMFC applications.

The waste problem in Karanglewas Village, Kutasari District, Purbalingga Regency, continues to increase alongside agricultural, trade, and MSME activities, while the management system remains conventional, without sorting, resulting in environmental pollution and limited landfill capacity. This community service program aims to implement the Integrated Independent Waste Sorting and Processing Tool (PLASMA-T) as an innovative solution that processes organic waste into compost and melts plastic waste into paving blocks that are useful and economical. The activities are carried out in stages, including problem identification, socialization, technical training, operational trials, evaluation of results, and the handover of the equipment to the Mitra Sejahtera TPS, with ongoing assistance so that the community can operate the equipment independently. The expected outcomes include a reduction in waste volume at the TPS, increased community awareness and skills in waste management, and the creation of new business opportunities through compost and paving block products. Thus, this program not only addresses environmental issues but also strengthens the village's circular economy and has the potential to serve as a model for other regions.

Muara Takus Temple is a valuable historical heritage in Riau Province and a testament to the glory of ancient civilization in the Indonesian archipelago. However, the environment around the temple often faces problems such as litter, vegetation damage, and declining public awareness. Clean-up and environmental preservation activities in this area demonstrate the involvement of the younger generation and the community in preserving the historic site. Through a participatory approach, this community service program aims to describe the process, results, and social impact of preservation activities in the Muara Takus Temple area. The results of the community service program demonstrate increased public awareness, the formation of cross-institutional collaboration, and the strengthening of the value of mutual cooperation in preserving cultural heritage and the environment. The results demonstrate that the involvement of the community, students, and site managers has successfully raised collective awareness of the importance of maintaining cleanliness and preserving cultural heritage. Furthermore, this activity strengthened the synergy between historical and environmental preservation through tree planting, waste management, and the provision of educational boards. This activity demonstrates that cultural heritage preservation can be revitalized through active participation and cross-generational collaboration.

The analysis methods used in this study include a case study on the use of closed-loop recycling and an evaluation of biopolymer performance across various industries, both of which are important components in the transformation of the manufacturing industry toward a circular economy. The research findings indicate that recycled materials can reduce carbon emissions by thirty to fifty percent and save production costs by fifteen to twenty-five percent. Artificial intelligence-based sorting technology improves sorting efficiency to 95 percent, and closed-loop recycling maintains the mechanical properties of materials up to 90 percent after four cycles. The degradation rate of biopolymers like PLA and PHA reaches 60-80% within six months, although production costs are still 2-3 times higher. The integrated approach increases resource efficiency by 45% and reduces waste by 60%. To achieve successful implementation, Extended Producer Responsibility (EPR) policies, strategic infrastructure investments, and collaboration from various parties thru the triple helix model must work together.

Environmental pollution in coastal areas continues to be a critical issue, particularly in regions with high tourism activity such as Pantai Baru Seliper Ate in Sumbawa. The increasing accumulation of plastic waste and the lack of environmental awareness among visitors and local communities highlight the need for educational and practical interventions. This community service program aimed to strengthen students’ understanding of environmental cleanliness through Islamic values and participatory actions. The method consisted of short religious-based environmental education, a collaborative beach-cleaning activity, and a reflective session designed to reinforce ecological and spiritual awareness. The results showed a significant increase in students’ knowledge of environmental ethics, Islamic principles related to cleanliness, and practical skills in waste identification and sorting. The program also succeeded in improving the physical condition of the beach and fostering collective responsibility among participants. These findings indicate that integrating environmental education with Islamic values and hands-on activities can effectively enhance environmental awareness and support sustainable behavior among young people.

Plastic waste is a form of solid waste originating from synthetic polymer materials that are difficult to decompose naturally and pose serious threats to environmental sustainability. Its accumulation continues to increase, causing pollution of soil, water, and ecosystems. In general, public attention is often limited to waste disposal and management activities without addressing preventive measures or innovative solutions at the source of the problem. This study aims to increase public awareness of plastic waste processing as an alternative approach to reducing the growing volume of plastic waste generated daily. One promising method explored in this research is the utilization of plastic waste as a raw material for producing environmentally friendly construction bricks. The study applied a simple descriptive experimental approach through direct practical activities, including the collection of plastic waste, processing and melting procedures, molding processes, and drying stages. The results demonstrate that plastic waste can be transformed into bricks with adequate physical strength and mechanical properties that comply with basic building standards. Therefore, this method has the potential to support sustainable waste management while providing alternative construction materials.

The digitalization of the creative economy has opened up significant opportunities for the community to create innovative products that have high sales value and are environmentally friendly. One interesting innovation is the use of used cooking oil as a raw material for making aromatherapy candles. Used cooking oil, which is usually discarded and pollutes the environment, can be reprocessed into products with economic value, thus supporting the principles of a circular economy. This study aims to examine the potential of processing used cooking oil into aromatherapy candles, analyze digital-based marketing strategies to increase product competitiveness in the market, and examine the meaning of transforming waste into innovative products from the perspective of Immanuel Kant's philosophy of reality. The research methods used were literature studies and field observations of used cooking oil processing practices by the community. The results show that used cooking oil-based aromatherapy candles have good business prospects, especially when combined with digital promotion through social media and marketplaces. Digitalization helps expand marketing reach, create brand identity, and attract consumers who care about environmental sustainability. From the perspective of Immanuel Kant's philosophy of reality, the transformation of used cooking oil into aromatherapy candles can be understood as a phenomenon, namely a reality that is visible in the practice of the digital creative economy. Meanwhile, the values ​​of sustainability, ethical awareness, and social meaning contained therein reflect noumena, namely the deepest reality that is not directly visible but provides direction and meaning for human actions.

This study aims to analyze the effectiveness of waste management in preventing fires at the Alak Landfill (TPA) in Kupang City using a qualitative case study approach. Data was collected through interviews, observations, and documentation involving officials from the Environmental and Sanitation Office, landfill workers, waste pickers, and surrounding communities. The findings indicate that the effectiveness of waste management remains low. In terms of input, financial resources, infrastructure, and human resources are insufficient to support optimal operations. During the process stage, waste collection and transportation are hindered by low public compliance, limited vehicles, and minimal waste segregation. Final waste processing still relies on the open dumping method, which increases waste accumulation, methane generation, and fire risks. In terms of output, various mitigation efforts have not successfully reduced the recurring fire incidents due to limited facilities, inadequate compaction, and the absence of gas monitoring systems. The results highlight the need for increased budget allocation, improved facilities, enhanced human resource capacity, and the implementation of safer and more sustainable waste management methods to reduce fire risks at the Alak Landfill.

Waste management has become a critical issue in achieving sustainable development, particularly in urban areas such as Medan City, where the volume of waste continues to increase each year. This study aims to analyze the optimization of economically valuable waste utilization through recycling activities to support the Sustainable Development Goals (SDGs), using a literature-based approach. The method employed is a literature review by collecting, examining, and comparing previous research from national and international journals related to recycling practices, circular economy principles, and urban waste management. The findings indicate that the utilization of economically valuable waste—such as plastic, paper, metal, and organic materials—can generate economic benefits for communities while improving overall waste management efficiency. The reviewed studies also highlight several key factors influencing recycling success, including government policies, the availability of recycling facilities, public awareness, and collaboration with recycling industries. Optimizing waste utilization has been shown to contribute significantly to various SDGs targets, including waste reduction, improved community welfare, and environmental protection. Therefore, strengthening the recycling ecosystem through multi-stakeholder collaboration is essential for Medan City in promoting sustainable urban development.

This study aimed to investigate the implementation of the BERDES (Bersih Desa) Program as an innovative strategy to foster environmental awareness among elementary school students at SD Negeri 2 Demulih. The program was designed using a participatory approach based on the Participatory Action Learning Sistem (PALS) method, which engaged students as active participants in identifying problems, planning, executing, and evaluating real actions in their school and local community environments. The research found that active student involvement in cleaning activities, waste management socialisation, and collective reflection significantly enhanced positive attitudes and social responsibility towards environmental conservation from an early age. Despite challenges such as limited frequency of program activities and common misconceptions about waste classification (organic, inorganic, residual), the BERDES program successfully served as an effective educational tool that embedded environmental care values among rural youth. The findings emphasised the critical role of schools as centres for environmental character education that combine theoretical knowledge with practical engagement to address real environmental issues.

Fly ash and bottom ash (FABA) are combustion residues from coal-fired power plants. Following the issuance of Government Regulation No. 22 of 2021, FABA is no longer classified as hazardous and toxic waste (B3). However, FABA must still be managed properly due to its potential to cause pollution through leachate generated if leaks occur in the FABA disposal area. This study evaluates the lining and drainage systems in the FABA disposal area at PT. PLN Nusantara Power UP Paiton to ensure that leachate does not contaminate surrounding groundwater. The research employs descriptive qualitative and quantitative methods, collecting secondary data to assess the structure and pollution control systems in the FABA disposal area at PT. PLN Nusantara Power UP Paiton. The data includes the disposal area structure and water quality from monitoring wells. Analysis results indicate that the FABA disposal area lining system operates effectively and in compliance with regulations, successfully containing leachate movement and preventing seepage. This is supported by pH, Fe, Hg, and turbidity levels in groundwater from monitoring wells remaining within safe limits. Additionally, the presence of a runoff pond helps contain surface runoff during heavy rain, keeping overflow water under control. Overall, the disposal area structure and leachate management system at PT. PLN Nusantara Power UP Paiton function well, but routine monitoring must continue to ensure no seepage occurs, preventing leachate from contaminating the surrounding environment as an early preventive measure to maintain environmental quality and regulatory compliance.

This study examines the commodification of women’s bodies within environmental campaign content on digital media, focusing on a video produced by Pandawara Group that addresses textile waste issues. Although the campaign aims to raise ecological awareness, the visual emphasis on a female body particularly the exposure of a bra redirected public attention from environmental messages to sexualized interpretations in the comment section. This research aims to analyze how such meaning shifts occur through representation and audience interpretation. Using Sara Mills’ Critical Discourse Analysis, this study focuses on subject–object positioning and reader positioning in both visual and verbal elements of the content. The data consist of one campaign video and selected public comments on TikTok, analyzed qualitatively. The findings reveal that women are positioned as visual objects rather than active subjects within the discourse, while audiences are constructed as observers of the female body instead of interpreters of environmental issues. The recurring use of the phrase “content that unites the nation” further legitimizes sexualized readings and reinforces dominant gendered discourse. Importantly, the study finds that such interpretations are reproduced not only by male audiences but also by female users, indicating the internalization of dominant visual culture in digital spaces. This study contributes to gender and media studies by demonstrating that environmental campaigns are not free from gender bias and that visual representation plays a crucial role in shaping unintended meanings within social campaigns.

Stunting remains one of the major chronic nutritional problems in Indonesia, including in Oesapa Village, Kelapa Lima District, Kupang City, East Nusa Tenggara Province. This condition is not only caused by inadequate nutritional intake but is also closely related to chronic infections resulting from poor hygiene and sanitation, particularly intestinal parasitic diseases. To reduce the risk of parasitic infections and improve children’s nutritional status, preventive efforts through education and health promotion are essential.This community service activity aimed to increase public awareness and knowledge, especially among parents and caregivers of stunted children, regarding the importance of maintaining hygiene and sanitation to prevent intestinal parasitic diseases. The methods used included participatory approaches such as interactive lectures, group discussions, and practical demonstrations of clean and healthy living behavior (PHBS), food hygiene, clean water management, and household waste disposal. Evaluation was conducted using pre-test and post-test instruments to measure changes in participants’ knowledge.The activities, carried out from May to September 2025 in Oesapa Village, showed a significant improvement in community understanding of hygiene and sanitation practices. Participants demonstrated greater commitment to maintaining environmental cleanliness and adopting healthier daily behaviors. Continuous educational efforts and multisectoral support are needed to help reduce the prevalence of stunting in the region