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Malang Regency is known as a strategic location with considerable potential as a tourism destination in Indonesia. According to data released by the Central Bureau of Statistics, Malang Regency has recorded 267 tourist destinations spread across 33 districts. This study uses data from one water tourism destination, referred to as Tourism Site X, which focuses on the management and development of recreational areas, including swimming pools, bathing facilities, water attractions, artificial lakes, as well as the management of recreational parks and family facilities such as playgrounds, seating areas, and recreational and educational facilities. Tourism Site X is located in Pakis District, Malang Regency. The reuse of treated wastewater as a non-potable water source for irrigating green open spaces represents a crucial strategic approach to conserving water resources, particularly in water tourism areas such as Tourism Site X, which require substantial water supplies. In practice, the wastewater generated in Tourism Site X mainly originates from domestic sources, including activities such as cleaning swimming pool areas and animal enclosures, toilet usage, and food court operations. This study aims to assess whether the quality of treated wastewater from the wastewater treatment process at Tourism Site X complies with the required standards for green open space irrigation, in accordance with the Regulation of the Minister of Environment/Environmental Control Agency of the Republic of Indonesia Number 11 of 2025 concerning Wastewater Quality Standards and Wastewater Treatment Technologies for Domestic Wastewater, as well as to identify parameters that need to be reduced or eliminated.

This research was conducted at PT PLN Nusantara Power UP Paiton, one of the largest coal-fired power plants (PLTU) in Indonesia, which focuses on reducing the generation of hazardous and toxic oil waste through the implementation of an oil purification system. The use of large amounts of lubricating oil in the Electro-Hydraulic System (EHS) has the potential to produce high amounts of used oil waste. To address this, the company implemented two main technologies, namely Water Content and Varnish Removal, which function to reduce water content and varnish layers so that the oil can be reused without reducing engine performance. This research used a quantitative descriptive method with data collection techniques through field observations, interviews, and operational documentation from 2021 to 2024. The results showed that the oil purification system was able to reduce hazardous and toxic waste generation by 11.46 tons over four years. In addition to providing environmental benefits, the implementation of this system also resulted in savings in oil waste costs of approximately Rp6,200,560,000. Technically, purification maintains engine performance by reducing water and varnish content, while from an environmental perspective, this activity supports the principle of reduce in hazardous and toxic waste management. Overall, the oil purification system has proven effective in improving operational efficiency, extending oil life, and supporting sustainable waste management for industrial operations.

This study aims to evaluate the effectiveness of various doses of 6.25% Poly Aluminium Chloride (PAC) and 0.1% polymer flocculant in reducing Total Suspended Solids (TSS) and assessing pH changes in coal stockpile wastewater at PT PLN Nusantara Power UP Paiton Unit 9. Stockpile wastewater typically contains high levels of suspended solids originating from water spray activities that carry fine coal particles. The coagulation–flocculation process was performed using the jar test method with PAC dosages of 35 ppm, 50 ppm, and 65 ppm, along with flocculant dosages of 6 ppm and 7 ppm. pH and TSS were analyzed before and after treatment to assess process effectiveness. The results indicate that a PAC dosage of 35 ppm combined with a 6 ppm flocculant achieved the highest TSS removal efficiency of 98.15%. Increasing PAC dosage resulted in reduced performance due to overdosing effects, leading to charge destabilization and impaired floc formation. These findings highlight the importance of optimizing coagulant dosage to improve stockpile wastewater quality for safe reuse in operational activities.

The issue of inorganic waste such as plastic and used paper in industrial environments remains an important issue that affects the cleanliness and aesthetics of work areas. PT Pertamina Patra Niaga Fuel Terminal Rewulu faces challenges in managing non-hazardous solid waste due to limited sorting systems and waste transportation frequency. This Community Service activity aims to improve workers' understanding and skills through socialization and training in making ecobricks as a solution for utilizing inorganic waste. The methods used include pre-activity stages, socialization and hands-on practice, and evaluation through pre-tests and post-tests. The results of the activity showed a significant increase in participants' knowledge after the training, proving the effectiveness of interactive methods in strengthening understanding of the 3R (Reduce, Reuse, Recycle) concept. In addition to reducing waste volume, this activity also fostered awareness and participation among workers in creating a clean and sustainable work environment. The results of this community service are important as a first step in building a culture of independent waste management in industrial environments and can be replicated in other locations with a similar approach. Keywords: Implementation of Pancasila values, bullying prevention, character education, primary school, SDN 1 Jatisela, school environment, student behaviour.

This study explores the implementation of circular economy principles within Safina Quilt, an MSME in Balikpapan that transforms textile waste—such as fabric scraps and discarded clothing—into value-added products. Safina Quilt applies the concepts of reduction, reuse, and upcycling throughout its production processes using quilting techniques, while simultaneously establishing an inclusive supply chain that engages local tailors, individuals with disabilities, and homemakers. This business model not only delivers economic gains by increasing profit margins and expanding market reach but also generates substantial social benefits by empowering vulnerable community groups. Although challenges remain, including limited access to supporting materials, constraints in production capacity, and insufficient digital marketing efforts, Safina Quilt demonstrates how MSMEs can successfully integrate environmental, economic, and social sustainability. Strengthening supply chain mechanisms, enhancing production capabilities, and improving digital marketing strategies are essential for scaling up and ensuring long-term business sustainability.

This Community Service Program aims to enhance the awareness, knowledge, and practical skills of teachers and students at SD Negeri 2 Palembang in carrying out independent waste management. The main issue identified was the lack of awareness and discipline in sorting organic and inorganic waste, which contributes to environmental pollution and poor hygiene within the school area. The program was implemented through lectures, interactive discussions, and hands-on training involving the use of separate bins for different waste types. The results demonstrated a remarkable improvement in waste management understanding and behavior. Teachers and students have developed new habits of waste sorting before disposal, resulting in a cleaner, healthier, and more pleasant school environment. Additionally, the activity inspired creativity in transforming inorganic waste into useful and economically valuable crafts that can be reused. Overall, this program fostered environmental awareness, strengthened community participation, and encouraged sustainable waste management practices as part of daily school culture.

Food waste generated from the household sector is one of the largest contributors to environmental degradation in Indonesia. Food waste generated from the household sector is one of the main contributors to the increasing volume of organic waste in Indonesia. This issue not only creates social and economic problems but also poses a serious threat to environmental sustainability. This study aims to analyze the contribution of household food waste to environmental degradation and to review sustainable management strategies. This study employs a Systematic Literature Review (SLR) method guided by the PRISMA 2020 Statement to review relevant national research conducted during the period 2018-2025. The results of the literature selection show that the impacts of household food waste on environmental sustainability can be categorized into three main dimensions: (1) ecological impacts, including pollution and the increase of greenhouse gas emissions; (2) resource impacts, such as the wastage of energy, water, and land; and (3) social-environmental impacts, including the increasing burden of regional waste management and the declining quality of life for communities living near landfills. The findings emphasize that the management of household food waste plays a crucial role in achieving environmental sustainability, particularly in supporting the attainment of Sustainable Development Goal (SDG) 12, which focuses on responsible consumption and production. Therefore, it is necessary to implement strategies of reduction, reuse, and recycling of food waste at the household level to minimize the negative impacts on environmental sustainability in Indonesia.

This community service aims to implement recycling activities for children as an educational strategy to foster environmental awareness from an early age. In the context of increasing environmental challenges, environmental education is an urgent need to shape a caring and responsible character for environmental sustainability. The method used is participatory learning with direct practice of recycling waste that actively involves children, accompanied by education on waste management, sorting, and the reuse of used materials into useful products. This approach uses observation, and documentation as data collection techniques to evaluate children's understanding and behavior. The results of the community service show a significant increase in children's awareness and concrete actions in protecting the environment after participating in the recycling activity. Children not only understand the concept of environmental conservation theoretically, but also practice it in their daily lives, such as sorting waste and reducing plastic waste. This community service's contribution to the development of science in the field of education lies in the successful implementation of an experiential learning model that integrates cognitive, affective, and psychomotor aspects in instilling environmental values. This educational model enriches an effective and contextual approach to environmental education, while also providing a strategic alternative for fostering environmental awareness among the younger generation. Thus, this community service makes a significant contribution to the development of educational methods that can strengthen sustainable development through the active participation of children from an early age.

The performance of investigators in resolving criminal cases is one of the key indicators of police effectiveness. However, the Semendawai Suku III Police Sector still faces challenges in monitoring case resolution due to the lack of an integrated reporting system and minimal documentation of investigators’ knowledge. This study aims to develop an interactive dashboard system based on Knowledge Management to assist in monitoring case resolution performance and support data- and knowledge-based decision-making processes. The research employs the Prototype method, involving several stages: needs analysis, system design, system development, testing, and refinement. The system was developed using the PHP programming language and MySQL database. The implementation results show that the dashboard can display data on criminal reports, case resolutions, and pending cases in an informative and integrated manner. In addition, the knowledge base feature functions as a medium for storing and sharing investigators’ experiences (lesson learned), allowing field knowledge to be reused by other officers when handling similar cases. Overall, the implementation of the interactive dashboard system based on Knowledge Management at the Semendawai Suku III Police Sector successfully improves work efficiency, strengthens the transparency of investigative performance, and builds a foundation for sustainable organizational learning within the police environment.

Population growth and lifestyle changes in Indonesia have led to complex waste management issues, negatively impacting social, health, and environmental sustainability aspects. To address this, a sustainable management approach that actively involves community participation is necessary. The concept of a Waste Bank, based on the 3R principles (Reduce, Reuse, Recycle), emerges as a strategic, community-based solution. This community service program aims to encourage active community participation in the Waste Bank program in Tanjung Uban Selatan, Bintan Regency, while supporting the realization of a Smart City based on intelligent and participatory environments. The methodology used is a qualitative approach to gain in-depth understanding. Primary data collection was carried out through interviews, participatory observations, and documentation studies. Key informants were purposively selected from various stakeholders, including Waste Bank administrators, local government representatives, and community members. The results show that, although initially challenging to increase community participation, the program has had a significant positive impact. It successfully shifted the community's view of waste as a valuable economic resource. Quantitatively, this is reflected in stable income from the sale of high-quality inorganic waste, such as metals and electronic waste. The program also led to strategic innovations, including sustainable education, waste savings incentives, social media use, and the "Dasi Umat" empowerment program. The success of this program, strengthened by awards at the district and national levels, makes it a model for sustainable waste management focused on community empowerment and supporting smart city development.

The problem of waste in rural areas is still a serious issue that has an impact on environmental health and the quality of life of the community. Batu Licin Village, Gunung Lengkuas Village, East Bintan District, Bintan Regency is one of the areas that faces similar problems, where household waste is still scattered and has not been handled optimally. This community service activity offers innovative solutions through the manufacture of rocket stoves as a means of efficiently burning certain organic and inorganic waste, as well as the construction of garbage booths as a place to store and sort waste before further processing. The implementation method involves counseling to residents, making prototypes, and direct practice of using rocket stoves and garbage booths by local communities. In addition, this activity also emphasizes the importance of changing community behavior in managing waste with the 3R (reduce, reuse, recycle) principle. The results of the activity show an increase in public awareness in managing waste independently, reducing the accumulation of waste in the village environment, and the emergence of alternative waste processing that is environmentally friendly, energy-efficient, and easy to apply. This innovation not only helps overcome the problem of household waste, but also provides educational value and empowers the community in maintaining the cleanliness and sustainability of the village environment. With the implementation of rocket stoves and garbage booths, it is hoped that a cleaner, healthier, and more viable village environment will be created in the long term.

This community service program was designed to empower the women’s group PKK RT 01 RW 08 in Tembalang, Semarang, through education and innovation in processing used cooking oil into eco-friendly floor cleaner. Household cooking oil waste, commonly known as “jelantah,” is often discarded and contributes to environmental pollution, while in fact it can be reused as a valuable resource. The program aimed not only to provide technical skills but also to increase environmental awareness and promote sustainable household practices. The implementation took place over three months (June–August 2025) using a participatory approach that included socialization, training, mentoring, and evaluation. During the activities, participants were introduced to the principles of green chemistry, practiced step-by-step floor cleaner production, and learned packaging and digital marketing techniques. As a result, the group successfully produced 65 bottles of “Lely Eco Floor” cleaner (260% of the initial target), distributed them for household use, and established an environmental movement group named “Lely Bersih Lestari.” Pre- and post-test scores indicated significant improvement in participants’ knowledge and skills. The program brought multiple impacts: reducing oil waste pollution, enhancing social cohesion, and opening opportunities for micro-scale entrepreneurship. Overall, this activity demonstrates how simple technology and community engagement can support sustainable development and women’s empowerment at the grassroots level.

Used cooking oil is a household waste that may pollute the environment and harm human health if disposed of or reused improperly. This community service program aimed to provide a waste management solution while enhancing the community’s economic skills through training on producing aromatherapy candles from used cooking oil. The implementation method included awareness sessions on the hazards of used cooking oil, technical training using a learning by doing approach, and assistance in production and marketing. A total of 30 participants from the Family Welfare Movement (PKK) took part in the program. The results indicated improved knowledge and skills, the production of approximately 50 aromatherapy candles with lavender, rose, and vanilla scents, and the establishment of a community group committed to continuing independent production. The program contributed positively to the environment by reducing around 15 liters of waste oil per month and created new entrepreneurial opportunities for residents. Therefore, this initiative can serve as a sustainable community empowerment model based on circular economy principles.

Waste remains one of the major environmental issues and a serious challenge in rural communities. The lack of discipline in waste disposal and limited knowledge of the impact of non-biodegradable waste have contributed to declining environmental quality and potential health problems. In Buniwangi Village, Pagelaran Subdistrict, Cianjur Regency, these conditions highlight the need for educational programs that provide practical understanding while fostering community awareness. This community service activity aimed to improve residents’ awareness of waste management through visual education media in the form of information boards displaying the decomposition time of various types of waste, ranging from organic to non-organic materials. The implementation method applied an asset-based community development (ABCD) approach, emphasizing active community participation. The program was carried out in three main stages: preparation, implementation, and evaluation. The preparation stage included location surveys, needs mapping, and obtaining permission from village authorities. The implementation stage involved designing attractive educational boards, installing them at strategic points in the village, and conducting socialization to explain the information provided. The evaluation stage was carried out through direct observation and short interviews to assess the program’s impact on community knowledge and behavior.The results indicated an improvement in residents’ understanding of the differences between biodegradable and non-biodegradable waste. Villagers began to show awareness of reducing single-use plastics and started applying the 3R principles (reduce, reuse, recycle) in daily life. Overall, this program had a positive impact by fostering greater environmental concern and became an initial step toward building a sustainable waste management culture in Buniwangi Village.

Introduction: Repurchase intention is one of the important indicators in the world of health services, especially in hospitals. XYZ General Hospital must evaluate the services provided to patients by understanding patient perceptions, particularly through patient experience, as 50% of respondents expressed unwillingness to recommend or reuse the hospital’s services. This highlights a potential gap between service delivery and patient expectations. Method The purpose of this study was to analyze the influence of patient experience, brand image, and trust on repurchase intention at XYZ Hospital, with attitude as an intervening variable. This study employed a quantitative explanatory research design, involving 182 patients from outpatient and inpatient units who had visited more than once. Data were collected through structured questionnaires and analyzed using the Structural Equation Model (SEM) with the Partial Least Square (PLS) method, supported by the SmartPLS software. Results: The results revealed that patient experience, brand image, and trust significantly affect patient attitudes, which in turn directly influence repurchase intention. Attitude serves as a mediating variable between patient experiences, brand image, trust, and repurchase intention. Simultaneous testing confirmed that all independent variables have a joint effect on repurchase intention. Among the variables tested, attitude showed the strongest direct influence on repurchase intention, while patient experience had the highest indirect effect through attitude. Conclusion: These findings underscore the critical role of patient experience in shaping positive perceptions of service quality, which contribute to strengthening brand image, increasing trust, and fostering patient attitudes that support future service utilization. Therefore, healthcare providers must prioritize improving communication, staff responsiveness, and patient-centered care to enhance overall experience, build loyalty, and ensure long-term sustainability of healthcare services.

This study aims to analyze the main challenges in managing Community-Based Tourism (CBT) and develop a sustainable management model for Cemagi Tourism Village, Badung, Bali. This study uses a qualitative approach by combining primary and secondary data. Primary data were obtained through field observations, in-depth interviews, and Focus Group Discussions (FGDs), while secondary data were obtained from literature studies and related documents. The analysis was conducted using the SWOT method and qualitative descriptive methods to describe the actual conditions and opportunities for tourism village development. The results show that tourism village management still faces several challenges, particularly in the aspects of promotion and preservation. Collaboration with various stakeholders is necessary, particularly in utilizing social media as an effective promotional tool. In addition, the preservation of local nature and culture is key to sustainable tourism. The proposed management model places the village government and traditional villages as mentors, Village-Owned Enterprises (BUMDes) and Tourism Awareness Groups (Pokdarwis) as managers, and the community as active actors in every stage of development. The model refers to the POAC (Planning, Organizing, Actuating, Controlling) management theory, taking into account three aspects of sustainability. First, the economic aspect, through increasing village income, creating jobs, and equitable profit sharing through the Village-Owned Enterprise (BUMDes). Second, the socio-cultural aspect, realized through preserving cultural heritage, improving the quality of human resources through tourism training, and strengthening the role of traditional arts. Third, the environmental aspect, with a focus on preserving subak (village-owned enterprises) and green spaces, managing waste using the 3Rs (reduce, reuse, recycle), and nature conservation. Thus, sustainable tourism management requires strong collaboration, cultural preservation, and environmental awareness to ensure long-term benefits for local communities.  

. The phenomenon of a potential megathrust earthquake predicted to occur in the coming years has raised widespread concern among the Indonesian public, particularly due to the high vulnerability of existing structures. In response to this issue, this study aims to analyze the structural capacity of buildings in resisting seismic forces and lateral loads, with a specific focus on factory structures. As a civil engineering student specializing in structural engineering, the objective of this research is to examine the behavior, performance, and potential failure patterns of building structures under earthquake loads. The research method employs pushover analysis as a tool for structural assessment, while the evaluation process refers to the guidelines outlined in ATC-40. The analysis results indicate that the factory structure is capable of withstanding a lateral load of 108,587.40 kN, with a controlled roof displacement of 1.5 meters. The structural performance level is categorized under the Damage Control (DO) stage, specifically at performance level SP-2, where the structure remains standing under lateral loads but experiences damage requiring repair before reuse. Furthermore, the failure patterns observed reveal a progressive performance of structural elements, shifting from condition B (Basic), IO (Immediate Occupancy), LS (Life Safety), C (Collapse Prevention), up to E (Extreme Damage). These findings highlight the importance of proper structural design and evaluation in enhancing resilience, ensuring safety, and minimizing potential risks from future megathrust earthquake events.

This study analyzes the potential use of cockle shell waste and coal fly ash as alternative raw materials in the production of composite brake pads. The high volume of industrial and fisheries waste, which has not been optimally utilized, encourages the exploration of environmentally friendly materials with adequate mechanical performance. The main focus of this research is the compressive strength of the produced brake pads, as this parameter is crucial for ensuring effective and safe braking performance. The method used includes the mixing and molding of composite materials with varying compositions of cockle shell and fly ash, followed by compressive strength testing according to standards. This study also takes into account the environmental impact of using waste as filler material, which is expected to reduce reliance on conventional materials and decrease waste that contaminates the environment. The results of the study are expected to provide empirical data on the potential of these two wastes as fillers in brake pad matrices and to identify the optimal formulation that provides the highest compressive strength. This study contributes to the development of sustainable braking materials and efforts to mitigate the environmental impact of waste, while also opening opportunities for the reuse of waste that has previously been poorly managed.

Hospitals need to make various efforts to improve the quality of service in order to attract new patients and retain them. However, retaining existing patients is more difficult than attracting new patients. This study aims to analyze the effect of brand repositioning and social media communication on revisit intention with hospital brand gestalt as an intervening variable at Unimedika Sepatan Hospital, Tangerang. Brand repositioning and communication through social media are important strategies in increasing patient loyalty and intention to reuse hospital services. Hospital brand gestalt, which reflects the patient's holistic perception of the hospital brand, is hypothesized as a factor mediating the relationship between brand repositioning, social media communication, and revisit intention. The research method used is quantitative with a survey approach to 260 respondents who have used Unimedika Sepatan Hospital services. Analyzed using Structural Equation Modeling with the help of AMOS software to test. The results showed that brand repositioning and social media communication significantly positively influenced hospital brand gestalt. Hospital brand gestalt was proven to have a significant influence on revisit intention. These findings indicate that hospital brand gestalt plays a mediating role in the relationship between brand repositioning, social media communication, and revisit intention. The implications of this study emphasize the importance of an effective brand repositioning strategy and the use of social media communication to build positive patient perceptions of the hospital brand, which can increase patient intention to revisit services. Unimedika Sepatan Hospital is advised to strengthen its brand positioning and increase interaction through social media.

The use of palm oil waste as boiler fuel is one of the innovative solutions in supporting the use of renewable energy while reducing the environmental impact of palm oil industry waste. Waste such as palm shells, mesocarp fibers, and empty oil palm bunches have high energy potential through direct combustion and other thermal technologies. This study aims to evaluate the potential use of palm oil waste as boiler fuel based on its calorific value, combustion efficiency, and environmental impact. The methods used include analysis of the physical and chemical characteristics of waste, boiler performance tests, and exhaust gas emission evaluation. The results show that palm oil waste has a high calorific value (15–20 MJ/kg), which makes it an efficient alternative fuel. In addition, the use of this waste is able to reduce dependence on fossil fuels while minimizing carbon emissions, thereby supporting the greenhouse gas emission reduction target. From an operational perspective, the use of palm oil waste in industrial boilers can increase combustion efficiency by up to 75–85%, depending on fuel conditions and boiler design. This makes palm oil waste not only economically valuable, but also strategic in supporting the transition to clean energy. Another advantage is that waste management becomes more targeted, because solid waste that is usually only an environmental burden can be reused as an energy source. However, some of the challenges that need to be considered include relatively high ash levels, the potential for corrosion in boiler equipment, and the need for emission control technology to comply with environmental standards. With the right mitigation strategy, palm oil waste can be processed into sustainable and environmentally friendly energy.