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Microplastic pollution, particularly from textile waste, has become a significant environmental concern, especially in urban runoff systems. These pollutants pose a considerable threat to water quality, aquatic life, and human health. Traditional wastewater treatment methods often fall short in addressing the complexities of microplastic contamination. This research explores the integration of advanced biodegradable polymer coatings with solar-powered textile waste treatment to reduce microplastic pollution in urban runoff systems. Biodegradable polymers, such as polylactic acid (PLA) and polyhydroxyalkanoates (PHA), are highlighted for their potential to efficiently filter microplastics while providing an eco-friendly alternative to conventional filtration technologies. By combining these materials with a small solar-powered unit, the prototype enables an off-grid, low-energy solution to treat textile wastewater in urban environments. The study includes testing the prototype in simulated urban runoff conditions with varying concentrations of microplastics, evaluating key performance indicators such as microplastic removal efficiency, energy consumption, and operational sustainability. Results demonstrate a significant reduction in microplastic concentration, indicating the effectiveness of biodegradable polymer coatings and solar-powered systems in treating urban runoff. The discussion addresses the feasibility of using local biodegradable materials, performance in real-world urban environments, and operational challenges such as maintenance and scalability. This innovative approach is compared with existing microplastic filtration methods, such as membrane filtration and adsorption, highlighting its advantages in terms of sustainability and cost-effectiveness. The findings suggest that this integrated system could offer a viable, low-cost solution for addressing microplastic pollution in urban drainage systems, with potential for widespread urban implementation.

This community service aims to increase the awareness of Abulyatama Elementary School (SD) students regarding the importance of disposing of waste in its place and sustainable economic management. This socialization is expected to form positive habits in students and reduce waste problems in the environment around the school. Through educational activities involving students, teachers, and parents, this program aims to create a clean, healthy environment, and understand how waste management is related to economic management. The approaches used in this socialization are lectures, interactive discussions, and direct demonstrations regarding good waste management, as well as an introduction to the basic concepts of economic management.

Strategy to build public awareness so that they can be 'friends' with waste to get direct economic benefits from waste. Waste banks cannot stand alone but must be integrated with the 4R movement (recycle, reuse, reduce, and replace), namely the activity of treating waste by reusing, reducing, recycling, and replacing so that the direct benefits felt are not only economic, but also the development of a clean, green and healthy environment. In this activity, collaboration with existing waste banks in the environment so that the results are more optimal. The result is good enthusiasm from the community so that this activity runs according to plan.

This study aims to analyze the implementation of circular economy in Micro, Small, and Medium Enterprises (MSMEs) in the Food & Beverage (F&B) sector. The focus of the research is on the implementation of circular economy practices that include waste management, use of sustainable raw materials, environmentally friendly packaging, energy and water efficiency, and food waste reduction strategies. The research method used a descriptive quantitative approach with a research instrument in the form of a questionnaire distributed through Google Form.

The purpose of this study is to design and build a garden fence made of wood and recycled bottles in an effort to develop an environmentally friendly and cost-effective solution. In addition to functioning as a room divider, this garden fence can also be used as a decorative component to add to the aesthetic appeal of the garden. This study examines the structural strength, material durability, and aesthetic value of the fence building using wood and recycled bottles. The method used in this activity is the ABCD method, the ABCD (Asset Based Community Development) approach method which is a mentoring method that prioritizes the utilization of assets and potentials around the community. This research method also evaluates the environmental impact and cost efficiency of using recycled materials. The results of the study show that a fence made of wood and recycled bottles can be a practical and attractive choice for a garden plan. This fence not only supports the management of plastic bottle waste, but also provides a smart solution that is financially efficient and affordable.

The problem of plastic waste has become a global issue that impacts the environment. In Sinar Bhakti Village, awareness of plastic waste management is still low, especially among children. This community service activity aims to provide education on utilizing used plastic bottles as a medium for growing ornamental plants to children in Sinar Bhakti Village. The method used is a participatory approach, directly involving children in the process of transforming used plastic bottles into planting media. The activity began with an introduction to the negative impacts of plastic waste, followed by training on plastic bottle processing techniques, and ended with practical activities of planting ornamental plants. The results of this community service showed that children were able to understand the importance of plastic waste management and practice creating planting media from used plastic bottles. Additionally, this activity enhanced creativity, environmental awareness, and a sense of responsibility among children. This activity is expected to contribute to reducing plastic waste and introducing the concept of recycling from an early age while creating a greener and more beautiful environment in Sinar Bhakti Village.

Car washes have become increasingly popular in some areas, but this growth has also had a negative impact on environmental quality, as untreated wash water is often discharged directly into car wash drainage systems without any prior treatment. This discharge of unfiltered wastewater can lead to high levels of COD (chemical oxygen demand) and surfactants in nearby water sources if carried out intensively. Much of the wastewater is often classified as waste. It is discharged by car wash operators into the drainage system and eventually into smaller waterways. In 2014, the Minister of the Environment highlighted the importance of managing cleaning waste due to its harmful effects on the environment and health. Based on the Pekanbaru Municipality's Regional Regulation No. 8 of 2003 on the payment of liquid waste treatment control permit, which stipulates that every industry must carry out waste treatment before discharging into the environment and each industry must also  pay a fee, this study will allow the design of absorption wells, which will be used to treat liquid waste from car washes, so that the wastewater absorbed into the ground is no longer a contaminated liquid waste. By treating the waste by the method of infiltration pits, it is hoped that the environment and the health of the residents around the laundry will be well preserved.

PT X is a chemical manufacturing company specializing in the production of phosphoric acid and sulfuric acid. In addition to waste generated from production processes, PT X also produces domestic wastewater originating from supporting activities such as employee barracks, offices, and laundry facilities. This domestic wastewater contains parameters that can potentially pollute the environment, such as BOD, COD, TSS, ammonia, and Total Coliform, some of which exceed the quality standards set by the Minister of Environment Regulation No. 68 of 2016. This study aims to design an effective Domestic Wastewater Treatment Plant (DWTP) system to process the domestic wastewater of PT X. The proposed DWTP system consists of a collection tank, Anaerobic Baffled Reactor (ABR), Aerobic Biofilter, and disinfection unit. Each unit is designed to reduce pollutant parameters to meet quality standards. Based on the calculations, this system can handle a wastewater flow rate of 21.91 m³/day with high treatment efficiency for critical parameters. The study results indicate that the proposed DWTP design can reduce environmental pollution, improve wastewater treatment operational efficiency, and comply with applicable regulations. Implementing this system is highly recommended to ensure environmental sustainability and the continued operations of PT X.

Organic fertilizers contain organic materials such as compost, manure, or other organic waste materials. When organic fertilizers are applied to the soil, they provide an abundant source of nutrients, including nitrogen, phosphorus, and potassium, as well as essential micronutrients. The community service activity program aims to empower farmers with the knowledge and skills to make organic fertilizers from local materials, which not only lower production costs but also improve soil quality and crop yields. The community service activity with the theme "Assistance and Making Organic Fertilizers in Reducing Fertilizer Costs for Farmers in Rowo Gempol Village, Lekok District, Pasuruan Regency" Through the Participatory Action Research method which includes preparation, processing, application, and evaluation, this program has succeeded in improving soil quality and supporting plant growth in the campus green area. Organic fertilizers, produced from campus organic waste such as dry leaves and food scraps, increase soil nutrient content and plant health, and reduce the negative impacts of synthetic chemicals. This activity also involves students in the process of processing and applying fertilizers, providing practical experience and raising awareness of the importance of sustainable agriculture and environmental management. The evaluation results showed a significant positive impact on soil quality and plant growth, with more fertile soil and healthier plants. In addition to the ecological benefits, the program plays an important educational role, by increasing students' understanding of environmentally friendly practices and organic farming skills. The success of this model is expected to be replicated in other villages. so that the benefits of this program can be felt more widely and support the creation of more sustainable agriculture.

This article discusses efforts to optimize the production process at the motorcycle carburetor company "Mantri Karbu" through the application of transformation methods. In the automotive industry, production efficiency is key to enhancing competitiveness and meeting the ever-growing market demand. This study identifies various challenges faced by Mantri Karbu, including long production times, resource waste, and inconsistent product quality. By implementing transformation methods, which include workflow analysis, waste reduction, and employee skill enhancement, the company can improve productivity and operational efficiency. The results of this implementation show a significant increase in production cycle time, a reduction in operational costs, and an improvement in customer satisfaction. This article aims to provide insights for other companies in similar industries to adopt effective strategies for optimizing their production processes.

Plastic waste is widely found in the environment. Degraded plastic waste eventually forms microplastics. Microplastic pollution has been widely found in various elements in the environment, such as in water, in the air, in organisms, and in salt. The study of microplastics in salt in Indonesia is still very limited, so a literature review was carried out on research carried out in the time period from 2020 to 2024. The parameters observed included abundance, shape, size, color and type of microplastics. The abundance obtained was between 46 particles/kg to 29 particles/g or assumed to be equivalent to 29,000 particles/kg in coarse salt. The abundance of microplastics in commercial salt was between 40 particles/kg to 306.67 particles/kg. The forms of microplastics found included fibers, films, fragments, filaments, and pellets. The microplastics found were black, transparent, red, blue, green, purple, brown, and white. Meanwhile, the size of the microplastics found was between 0.017 mm to 4.936 mm. Microplastic types were only found in one article, including polyvinyl chloride (PVC), polyurethane (PU), polyester, nylon, and polyethylene terephthalate glycol (PETG).

Patient satisfaction is one of the benchmarks for assessing a hospital's success in providing services. Quality targets in nutrition services based on hospital Minimum Service Standards include three indicators, namely timeliness of food distribution, food waste and the absence of errors in diet administration. The aim of this research is to determine the relationship between minimum nutritional service standards and the level of satisfaction of inpatients at the Muhammadiyah Islamic Hospital Sumberrejo, Bojonegoro Regency. This type of research is cross-sectional. The sample in this study was patients in classes 2 and 3 of the Shafa and Marwah inpatient rooms, totaling 135 patients. The data measured are the level of patient satisfaction, timeliness of food distribution, accuracy of diet and food waste. Bivariate analysis used the Spearman's Rank test. The results of data analysis showed that food distribution timeliness was 92.5%, diet accuracy was 98%, food waste was 15.1%, while patient satisfaction levels were very satisfied (52%), satisfied (44%), dissatisfied (2%) and very dissatisfied (1%). The results of the study showed that the timeliness of distribution of breakfast (p=0.864>0.05), afternoon (p=0.853>0.05), evening (p=0.864>0.05) and the level of satisfaction, while the accuracy of the diet and the level of satisfaction patients (p=0.112>0.05), for food waste and level of patient satisfaction (p=0.311>0.05). From this research it can be concluded that statistically there is no significant relationship between minimum service standards (timeliness of food distribution, accuracy of diet and food waste) and the level of patient satisfaction. Suggestions that can be given in this research are that hospital efforts are needed to maintain the quality of food services by paying more attention to the accuracy of diet for patients.

Companies operating in the electricity accumulator industry sector, in the production process produce waste in the form of hazardous and toxic materials (B3). The management of B3 waste is carried out based on the provisions stated in the Regulation of the Minister of Environment and Forestry Number 6 of 2021 concerning Procedures and Requirements for Hazardous and Toxic Waste Management. Therefore, the waste generated requires special handling to prevent environmental pollution. Therefore, the waste generated requires special handling so as not to pollute the environment. Hazardous waste management in the electricity accumulator industry includes various stages, both for waste in the solid and liquid phases, namely identification, inventory, packaging, labeling and symbolization, storage, and transportation carried out by third parties. This research aims to assess the current condition of hazardous waste management in the electricity accumulator industry, evaluate it, and provide recommendations that are in line with applicable regulations. The research method used is a descriptive approach. In the inventory process, the electricity accumulator industry requires Temporary Storage Sites (TPS) to store B3 waste before transportation by third parties.

Due to the continuously increasing volume, the difficulty in distinguishing types of waste, and the heightened public awareness of environmental cleanliness, waste is the result of activities that are no longer used in the production process, so stakeholders must have the ability to manage waste effectively. One of the current problems is trash bins; the trash bins currently in use are only designed to transport waste materials without any other purpose.

Cocoa (Theobroma cacao L.) is a plantation crop that produces cocoa shell waste, and is an alternative as compost fertilizer. Water spinach is a type of vegetable that is widely consumed, but its productivity has decreased. It is necessary to increase plant production by providing additional nutrients by using cocoa shell waste as fertilizer. This research aims to determine the effect of cocoa shell waste compost on the growth of land kale plants. Research methods, namely (RAK); 5 treatments and 4 replications consisting of; P0(control), P1(100gr/polybag), P2(200gr/polybag), P3(300gr/polybag), and P4(400gr/polybag. Parameters observed for growth included; plant stem height, number of leaves and wet weight, then The data was tested using (ANOVA) and continued with the test (BNT) with a level of 5%. The results of the ANOVA test showed that the height growth of land kale plants in the treatment had a very significant effect on the 200g dose of fertilizer where Fcount>Ftable (11.7>3.11) while the group did not have a significant effect where Fcount <Ftable (0.39 < 3.11). significant where Fcount < Ftable (1.83 < 3.11) as well as in groups where Fcount < Ftable (2.1 < 3.11), and the highest wet weight was in treatment P2, namely 5 gr. Providing cocoa shell compost fertilizer at a concentration of 200 gr gave the best results in all observed parameters.

PT X is one of the industries located in East Java that produces liquid waste. The industrial sector is indeed a large producer of liquid waste. One of the liquid wastes produced is domestic liquid waste. The industry has the responsibility to manage domestic liquid waste in accordance with Government Regulation Number 22 of 2021 which requires industries to carry out domestic wastewater management before being discharged into water bodies. One of the efforts made by the industry to manage the domestic wastewater produced is to use a Domestic Wastewater Treatment Plant. The quality of the treated water has met the domestic wastewater quality standards to be discharged into river and does not pollute the environment.

This study examines the transformation of the mindset of the people of Saringembat Village concerning environmental cleanliness, from the stage of awareness to concrete actions. Saringembat Village, which previously faced challenges in managing environmental cleanliness, has shown significant changes in the views and behavior of its residents after implementing several community work programs and public participation. The research method used is a qualitative approach with data collection techniques through interviews and observations. The results of the study indicate that the main driving factors for this transformation are continuous training, the involvement of community leaders, and support from external actors such as the government and NGOs. This change is reflected in the growing individual awareness of the importance of cleanliness, better waste management, and active community participation in regular cleanliness activities.

This study discusses the optimization of sanitation and environmental cleanliness in realizing a Healthy and Prosperous Village in Saringembat Village through a collaborative approach and community education. This program is based on the SDGs point of Healthy and Prosperous Villages, with a focus on the importance of clean environmental conditions and good sanitation as the foundation for public health. The methods used include surveys of locations for illegal waste disposal, interviews, and focus group discussions (FGD) with the Head of the Village Consultation Agency (BPD) and local waste bank managers. The survey results show five main waste disposal points that became the primary focus of the program. Collaboration with village officials resulted in full support in the form of drafting a village regulation on cleanliness and the installation of CCTV to prevent illegal waste disposal. The program also involved community service activities starting from Sawir Hamlet, Krajan Hamlet, and Demaan Hamlet, with active community participation and direct coordination from the hamlet heads. The implementation of the program proved to increase residents' awareness of the importance of sanitation, reduce the risk of infectious diseases, and create a healthier environment. The role of students as activity initiators was appreciated for their ability to revive the gotong royong (mutual cooperation) culture, which had been abandoned.

PT X, one of the state-owned enterprises to support the country's food security, is the largest and most comprehensive fertilizer producer in Indonesia that generates various wastes, including industrial liquid waste. Liquid waste has no economic value, so it is very important to treat it. PT X Company uses potential Hydrogen (pH)ysical and chemical treatment. There are two effluent treatment units, setting, line injection, and sludge treatment. All parameters evaluated include chemical requirements for oxygen (COD), zat padat yang tersuspensi(TSS), ammonia (NH3), total kjehdal nitrogen (TKN), fluorine, degree of acidity (potential of hydrogen (pH)), oil, and fat. According to the results after the analysis conducted in the study, it was found that the air pollution data after wastewater treatment was carried out showed that the quality of wastewater every month had met the quality standards of the rules and could be discharged into water bodies / seas. This shows the effectiveness of the treatment process implemented by the company.

This study explores the potential utilization of phosphoric acid sludge and ZA II lime waste as raw materials for the production of SP-15 fertilizer, which is essential for enhancing agricultural productivity and addressing environmental issues related to waste disposal. The research aims to analyze the phosphorus content (P₂O₅), moisture levels, sulfur (S), and calcium oxide (CaO) in the raw materials and the final fertilizer product. Methods employed include sampling, gravimetric analysis, and spectrophotometry. The findings indicate that phosphoric acid sludge contains an average P₂O₅ content of 33.05%, making it a potential phosphorus source for fertilizer production. Additionally, ZA II lime demonstrates good hygroscopic properties. This research concludes that utilizing these two wastes can not only reduce reliance on chemical fertilizers but also provide economic benefits to farmers and support sustainable agriculture. The implications of this study highlight the need for further research to optimize waste processing techniques and enhance community awareness regarding waste management.