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The use of synthetic dyes in the textile industry has caused various environmental problems due to waste that is difficult to degrade and has the potential to contaminate water and soil. Therefore, the development of environmentally friendly natural dyes is an important alternative to be explored. One potential but underutilized source of natural dye is kirinyuh weed (Chromolaena odorata L.), which is known to contain natural pigment compounds such as tannins and flavonoids. This study aims to analyze the dyeing quality of primissima cotton fabric using kirinyuh leaf extract with variations of alum and ferrous mordants through a mordanting process. The research employed an experimental method, including hot extraction of kirinyuh leaves, dyeing of primissima cotton fabric, and mordanting using alum and ferrous salts. The evaluation of dyeing quality focused on washing color fastness and light color fastness tests based on standard textile testing methods. The results indicate that the type of mordant significantly affects the resulting color quality. Alum mordant produced relatively lighter colors with good washing fastness, while ferrous mordant resulted in darker shades with similarly good washing fastness. However, color fastness to light showed relatively lower values, particularly in fabrics treated with alum mordant. Based on these findings, it can be concluded that kirinyuh leaf extract has the potential to be used as a natural dye for primissima cotton fabric, although further optimization is required to improve color resistance to light exposure.

Waste is an environmental problem that can cause air pollution and health problems if not managed properly. The presence of Temporary Waste Disposal Sites (TPS) close to residential areas often produces unpleasant odors due to the decomposition of organic waste, thus disturbing the comfort of the community. This study aims to determine the relationship between the distance of homes from TPS and odor disturbances in the community in Andounuhu Village, Kendari City. The study used a quantitative method with a cross-sectional design on 58 respondents selected by purposive sampling. Data collection was carried out through questionnaires and observations, then analyzed univariately and bivariately. The results showed that residents living less than 100 meters from the TPS experienced odor disturbances more often than those living further away. The further the distance of the house from the TPS, the level of odor disturbance tended to decrease. This study shows that the proximity of residential areas to TPS affects environmental comfort, so that more optimal TPS management is needed through routine waste transportation and arranging TPS locations that are not too close to residential areas.

Waste is an environmental problem that can cause air pollution and health problems if not managed properly. The presence of Temporary Waste Disposal Sites (TPS) close to residential areas often produces unpleasant odors due to the decomposition of organic waste, thus disturbing the comfort of the community. This study aims to determine the relationship between the distance of homes from TPS and odor disturbances in the community in Andounuhu Village, Kendari City. The study used a quantitative method with a cross-sectional design on 58 respondents selected by purposive sampling. Data collection was carried out through questionnaires and observations, then analyzed univariately and bivariately. The results showed that residents living less than 100 meters from the TPS experienced odor disturbances more often than those living further away. The further the distance of the house from the TPS, the level of odor disturbance tended to decrease. This study shows that the proximity of residential areas to TPS affects environmental comfort, so that more optimal TPS management is needed through routine waste transportation and arranging TPS locations that are not too close to residential areas.

The rapid development of the fashion industry has led to increasing environmental problems due to textile waste and the use of environmentally unfriendly materials. This study aims to analyze the potential innovation of kur rope bags as an environmentally friendly fashion product with high economic value. The research method used is a descriptive qualitative method through observation, literature study, and documentation of the kur rope bag manufacturing process. The results show that kur rope has strong, durable, and flexible characteristics, making it suitable for use as a basic bag material. Innovation in design and weaving techniques can increase the aesthetic value and marketability of the product. In addition, kur rope bags have the potential to become a promising business opportunity and support the empowerment of the community's creative economy. With growing awareness of sustainability, kur rope bags can become an alternative fashion product that not only reduces environmental impact but also creates new market opportunities. Therefore, the development of this product is expected to contribute positively to reducing textile waste and strengthening the local economy through the creative industry.

This study aims to evaluate the application of environmental management accounting in the management of work programs at the Bangkalan Regency Environmental Agency. The research is motivated by increasing environmental problems, particularly waste volume and limited management facilities, while environmental management accounting has the potential to assist agencies in identifying, measuring, and reporting environmental costs as a basis for decision-making and public accountability. This study used a qualitative method with a case study approach at the Bangkalan Regency Environmental Agency. Data were collected through interviews, observations, and documentation studies. The results show that the Environmental Agency has implemented environmental management accounting, but its recording is still manual and does not separate environmental costs from general operational costs. This condition complicates cost evaluation and program impact assessment. Work program management has been structured and evaluated regularly, but performance measurement still focuses on output, not long-term environmental impact. Information transparency is also still limited to activity publications. Overall, the application of environmental accounting is at a basic stage and has not been fully integrated into the work program planning and evaluation process. The findings of this study provide theoretical and practical implications in the form of strengthening understanding of the role of environmental management accounting and the need to improve the work program recording and evaluation system at the Bangkalan Regency Environmental Agency.

Negeri Haruru in Central Maluku Regency currently faces dual environmental challenges: unmanaged household organic waste and the frequent occurrence of surface water puddles during periods of high rainfall. This community service activity aims to educate and provide practical skills to junior high school students in Negeri Haruru regarding the implementation of 3R principles (Reduce, Reuse, Recycle) through the innovation of Biopore Infiltration Holes (LRB) using recycled plastic bottles as a cost-effective alternative to conventional liners. This innovation is designed to reduce plastic waste while simultaneously managing organic waste and improving soil water infiltration capacity independently at the household level. The implementation method involved participatory socialization, interactive discussions, and hands-on demonstrations of constructing biopore installations. The results indicated a significant increase in students' understanding of the role of soil fauna as decomposing agents and their technical ability to assemble used plastic bottles into functional biopore modules. The implementation of this innovation proved effective in maintaining the structural integrity of the infiltration holes and facilitating the biological decomposition of organic waste into compost. This program is expected to serve as a sustainable community-based environmental management model to minimize puddles and address waste problems in Negeri Haruru through a low-cost, appropriate technology approach.

Industrial development in Indonesia has significantly contributed to national economic growth; however, it also poses potential risks of environmental pollution when corporate waste management is not conducted properly. Environmental pollution resulting from corporate waste activities may cause harm to surrounding communities, including health problems, ecosystem degradation, as well as material and immaterial losses. In this context, the class action mechanism serves as a relevant legal instrument to collectively advocate for the rights of affected communities. This study aims to analyze the implementation of the class action mechanism in environmental pollution cases based on Decision Number 29/Pdt.G/2023/PN.Skh and to evaluate its effectiveness in providing legal protection and restoring the rights of affected communities. This research employs normative legal research using statute approach, case approach, and conceptual approach. The findings indicate that the class action mechanism in the aforementioned decision fulfilled the requirements of numerosity, commonality, typicality, and adequacy of representation as regulated under Supreme Court Regulation (PERMA) Number 1 of 2002. Procedurally, the class action proved effective in enhancing access to justice, ensuring judicial efficiency, and strengthening the protection of the constitutional right to a good and healthy environment. However, its substantive effectiveness remains dependent on the fulfillment of formal requirements, the quality of evidence presented, and the consistent application of environmental law principles by judges. Therefore, the class action mechanism constitutes an important instrument in environmental law enforcement, yet it requires consistent regulatory support and judicial practice to achieve optimal ecological justice.

This community service program was conducted by Group 7 of KKN ITB Ahmad Dahlan Lamongan in Bapuhbandung Village, Glagah District, Lamongan Regency, aiming to address environmental and public health issues through the utilization of ecobricks and the cultivation of family medicinal plants (TOGA). The main problems identified were low awareness of plastic waste management and the underutilization of home yards for medicinal plants. The program applied a participatory assistance method involving students, parents, youth, and village officials throughout the stages of observation, planning, implementation, and evaluation. The results showed that more than 300 ecobricks were produced and assembled into an installation forming the word “BAPUHBANDUNG,” which now serves as a new village icon. In addition, medicinal plants such as ginger, turmeric, and lemongrass were planted around the installation area and residents’ yards. The evaluation indicated high community participation, good-quality ecobricks, and positive initial growth of TOGA. This program not only produced physical outputs but also increased community awareness of plastic waste management, family health independence, and the strengthening of village identity.

Seren Village has abundant organic waste potential, particularly banana peel waste generated from banana-processing MSME activities and wood ash resulting from household firewood combustion. To date, this waste has not been optimally utilized and is often discarded, thereby posing potential environmental problems. This study aims to process banana peel waste and wood ash into an innovative, environmentally friendly shoe polish made from natural materials, while also enhancing the economic value and welfare of the community. The research employed a descriptive qualitative method with a case study approach. Data were collected through observation, interviews, and documentation involving the women’s Family Welfare Empowerment Group (PKK) of Seren Village as the target participants. The shoe polish production process includes drying and grinding banana peels, mixing them with a wood ash solution that functions as a natural coloring agent, adding supporting materials, and heating the mixture until a ready-to-use shoe polish is obtained. The results indicate that the shoe polish produced from banana peels and wood ash has a solid texture, is slightly coarse, non-glossy, and has a relatively fast drying time of approximately one minute. In addition, the product shows good resistance to water splashes and does not damage the surface of shoes. The use of natural ingredients makes this shoe polish safer for health. The utilization of this waste has the potential to support MSME development, reduce environmental pollution, and sustainably improve the welfare of the Seren Village community.

Smart cities are trending as an innovative approach to address urban problems. This study aims to analyse the trend of research publications on smart cities in Indonesia with a bibliometric analysis approach. The articles used in this study were obtained from Scopus data. From 131 articles found in the scopus database between 2013 and 2024. The selected articles were then managed using biblioshiny and Vosviewer software. The results showed that publications related to smart cities experienced fluctuations from the last 10 years. The article with the most citations is entitled Strengthening waste recycling industry in Malang (Indonesia): Lessons from waste management in the era of Industry 4.0 has the most citations of 85 citations. While seen from the highest affiliation shows that Gadjah Mada University is an institution with a total of 70 publications. Mapping articles based on the relationship between keywords (co-occurance) is formed into 12 clusters, each cluster describes topics that are often discussed in smart city-related literature, such as urban planning, social networking, e-government, public services, urban development, sustainable development, internet of things (IoT), urban growth, economic, artificial intelligence, and secondary datum.

Cassava is one of the strategic agricultural commodities in Indonesia, contributing significantly to national production, particularly in several major producing provinces. In addition to the challenge of declining harvested areas, cassava processing activities also generate agricultural waste that poses environmental risks. In Purwasari Village, Dramaga Subdistrict, Bogor Regency, household-scale cassava processing industries produce solid waste in the form of cassava peels, which are not optimally managed and are commonly discarded in the surrounding environment. This cassava waste has the potential to cause environmental pollution, unpleasant odours, and negative impacts on public health. One sustainable alternative for managing this cassava waste is the use of cassava peels as a raw material for composting. This study aimed to identify problems associated with cassava peel waste and to assess members of the Taruna Tani Millennial Farmer Group's interest in compost production using cassava peels. The research was conducted from December 2024 to June 2025 using a community-based assistance approach. Data was collected through interviews and questionnaires involving 20 respondents. The results showed that the main problems associated with cassava peel waste include waste accumulation, limited processing facilities, and low community awareness. Farmers’ interest in cassava peel composting was generally categorized as high, with an average score of 77%, although several indicators remained at a moderate level. Extension activities and hands-on demonstrations were proven to enhance farmers’ understanding, interest, and participation. With sustained educational support and adequate facilities, the use of cassava peel compost has strong potential to promote environmentally friendly, sustainable agricultural waste management.

Plastic waste has become one of the main environmental problems due to its nature, which is difficult to decompose naturally and can cause environmental pollution. One alternative waste treatment method that can be applied is to use a plastic melter to melt and recycle plastic waste into useful products. However, the design of plastic melters often lacks consideration of structural strength and safety aspects during the operation process. This study aims to design and engineer a plastic melter using the Finite Element Analysis (FEA) simulation approach to analyze structural resistance to thermal and mechanical loads that occur during the operation process. The research method was carried out through 3D design modeling of plastic melter components using Solidworks software, followed by analysis with FEA simulation on the main component, namely the melting tube. The parameters analyzed include the distribution of von Mises stress, the amount of displacement, and the safety factor. The analysis results show that the analyzed components experience von Mises stress distribution and displacement that are still below the material tolerance limits, with safety factor values above the recommended safety limits. Thus, the resulting plastic melter design is declared safe and can proceed to the manufacturing process. Therefore, the plastic melter design is safe, strong, and feasible to be realized as an effective and sustainable plastic waste processing technology solution.

The Tapal Kuda Air Salobar Food Court is one of the culinary areas that plays an important role in supporting tourism and social activities in Ambon City. This area offers a variety of local culinary specialties from Maluku which are an attraction for the community and tourists. However, the increase in the number of visitors and the activities of traders have not been fully balanced by the conditions of adequate spatial planning, facilities, and area management systems. This study aims to analyze the existing condition of the Tapal Kuda Air Salobar Food Court from the aspects of spatial planning, waste management, supporting facilities, as well as the potential and challenges of its development as a culinary tourism destination. This study uses a descriptive qualitative approach with data collection methods in the form of field observations and in-depth interviews with key informants, namely area managers, traders, and visitors. The data obtained are analyzed thematically to identify the main problems and potential development of the area. The results of the study indicate that the spatial planning of the Tapal Kuda Air Salobar Food Court has not been able to accommodate the increase in visitor and trader activities due to the lack of clear zoning, limited circulation routes, and spatial planning that develops without integrated planning. Furthermore, waste management in this area is not yet systematic and sustainable, as evidenced by limited trash bins, a lack of waste sorting, and poorly scheduled waste collection. Limited supporting facilities, such as seating and sanitation facilities, also impact the comfort and quality of the visitor experience, especially during peak visitor periods. Nevertheless, the Tapal Kuda Air Salobar Food Court has significant potential as a culinary tourism destination based on local cuisine and a social space, which can be developed through spatial planning, facility improvements, and more integrated area management. This study concludes that the revitalization of the Tapal Kuda Air Salobar Food Court requires a comprehensive approach, emphasizing spatial planning improvements, strengthening waste management, and enhancing the quality of facilities and area management to support the sustainability of culinary tourism and the quality of public spaces in Ambon City.

Organic waste is one of the major environmental problems caused by household activities. Improper waste management leads to environmental pollution and health risks. This community service activity aimed to educate and train the community in processing organic waste into ecoenzymes as a multifunctional and environmentally friendly product. The method used included socialization, training, and direct assistance to the community in producing ecoenzymes from fruit and vegetable waste through fermentation. The results showed that the community was able to understand the benefits and production process of ecoenzymes and began implementing them in daily life and agriculture. Ecoenzymes can be used as natural cleaning agents, plant fertilizers, and pest repellents. This activity contributes to reducing organic waste and improving environmental awareness and sustainable agriculture practices.

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.

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.

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

This community service program aims to enhance public awareness and skills in managing household waste through an innovative recycling-based approach. The main problems identified in the target community include limited understanding of waste segregation, lack of knowledge regarding the economic potential of household waste, and insufficient skills to transform waste materials into useful products. To address these issues, the program was implemented through several stages, including an initial survey to identify community needs, environmental education and awareness sessions, hands-on training on producing recycled products, and continuous mentoring to ensure the sustainability of the activities.The results show a significant increase in participants’ knowledge of proper waste management and recycling concepts. Moreover, the community successfully produced various creative and functional recycled items such as plant pots, household crafts, and other aesthetically valuable products with economic potential. The program also facilitated the establishment of a resident group committed to continuing the initiative independently. Overall, this community service activity demonstrates that practical environmental education can effectively foster ecological awareness, strengthen community participation, and create opportunities for local economic empowerment through the utilization of household waste.

This study analyzes the conditions of extreme overcapacity in an installed exhaust ventilation system (Qinstalled = 18.00 /minute) that serves four acid cabinet units, specifically for the storage of volatile Hazardous and Toxic Materials (B3) such as toluene and methanol in tightly sealed containers. Although high capacity ensures safety, this practice causes significant energy inefficiency and unnecessary negative pressure problems in the room. Based on engineering analysis using a conservative Air Change Rate (ACR) standard of   for liquid storage of 1.38 /minute. By applying the industry standard safety factor (FoS) of 1.5, the ideal flow rate (Qideal) that must be allocated is 2.07 . The optimization analysis concludes that the currently installed system is theoretically capable of safely and efficiently serving 8 units of volatile storage acid cabinets, with the addition of 4 new cabinets to maximize efficiency and reduce energy waste. This utilizes 92% of the total capacity while maintaining a safety factor above 1.5.

This community service program aims to empower the community of Ujung Tanah District, Makassar City in circular economy-based waste management. Ujung Tanah District as a coastal area with high population density faces complex waste problems, especially waste that ends up in the sea and disrupts the coastal ecosystem. The activities were conducted in four urban villages, namely Ujung Tanah, Tabaringan, Pattingalloang, and Pattingalloang Baru, involving 120 households as direct participants. The implementation methods included socialization and education, waste sorting and processing training, establishment of Waste Banks, mentoring for recycled product creation, and marketing system development. The results showed a significant improvement in community knowledge about waste management, with average scores increasing from 45.2 to 82.6. Four active Waste Bank units were established with a total of 320 household customers. The managed waste volume reached 2.4 tons per month with an economic value of IDR 8,500,000 per month. Recycled products include ecobrick crafts, bags from plastic packaging, and compost fertilizer. This program successfully changed the community paradigm from dumping waste into the sea to managing waste as a source of income.