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This activity aims to analyze the effectiveness of waste management in optimizing production costs in the Giriloyo Batik industry, located in Yogyakarta, Indonesia. As a center for traditional batik production, Giriloyo faces environmental challenges due to the liquid waste generated from the dyeing process. This community service activity introduced hybrid constructed wetland technology as an environmentally friendly and cost-effective solution. Methods used included field observations, interviews with local artisans, and a comparative cost analysis before and after system implementation. The results showed a 30% reduction in monthly waste management costs and a significant improvement in wastewater quality, in accordance with environmental standards. Furthermore, this program increased community awareness and participation in sustainable production practices. Effective waste management not only reduces operational costs but also strengthens the long-term environmental responsibility of the small-scale batik industry. By integrating technology with community involvement, the program provides a sustainable model for waste management in similar artisanal sectors, contributing to both economic and environmental benefits.

The reading This community service activity aims to improve students' environmental skills and science literacy through training in the production and application of liquid organic fertilizer (POC) made from Morinda citrifolia fruit at MTsN 1 Kota Palangka Raya. The activity was carried out in September 2025 using an educational participatory method that actively involved MBKM UIN Palangka Raya students and students in each stage of the activity. The implementation of the activity consisted of four main stages, namely preparation, socialization, POC production practice, and evaluation and reflection. Students were trained to process noni fruit into liquid fertilizer through a fermentation process using additional ingredients of brown sugar, clean water, and EM4 solution as a microbial starter. The results of the activity showed an increase in participants' understanding of the scientific concepts of the fermentation process, organic waste management, and the application of science in everyday life. The application of POC on pakcoy plants showed better vegetative growth compared to untreated plants, characterized by greener leaves and sturdier stems. This activity not only strengthened the critical and collaborative thinking skills of the students but also fostered an environmentally conscious attitude in line with the values of the Pancasila Student Profile. Thus, the training in making POC from noni fruit can be considered a best practice in the application of contextual learning based on ecology.

The problem of household organic waste management, especially kitchen waste, is still an environmental challenge that has not been handled optimally. In fact, this waste has great potential to be used as environmentally friendly products. One solution that can be applied is the manufacture of eco-enzymes, which are fermented liquids from organic waste that function as a substitute for synthetic chemicals in various household and agricultural purposes. This community service activity aims to increase the awareness and skills of residents in managing organic waste through the creation of eco-enzymes as a tangible form of applying the 3R (Reduce, Reuse, Recycle) principle. The activity was carried out in Kedu Village by involving PKK women, PSRT members, the Farmer Women Group (KWT), and housewives. The methods used include counseling on the impact of household waste and the benefits of eco-enzymes, as well as direct practice of making eco-enzymes accompanied by Mrs. Faila and students of the Real Work Lecture (KKN) of Tidar University. The implementation process includes sorting kitchen waste, mixing fermentation ingredients, and monitoring yields during the incubation period. The results of the activity show that the community is able to understand the concept and techniques of making eco-enzymes well. The active participation of residents in hands-on practice reflects increased knowledge and skills in independent organic waste management. In addition, this activity encourages the formation of new sustainable habits in utilizing household waste, while reducing dependence on synthetic chemicals. Thus, this service makes a positive contribution to environmental conservation efforts and local community empowerment through educational and applicative approaches.

Industrial waste management is a crucial aspect of maintaining environmental sustainability and the health of communities around industrial areas. This study aims to empower the community through education on industrial waste management at Jordan Bakery Factory in Kendari, Southeast Sulawesi. The methods used were participatory observation and interviews with the waste management staff at the factory. The results of the community service show that the factory has implemented a good system for managing liquid and solid waste, including a liquid waste filtration process and economic utilization of solid waste. In addition, the service team also prepared educational materials in the form of pamphlets containing information about types of waste, proper management methods, and the environmental impact of waste. This education is expected to increase awareness and participation among the community and factory workers in responsible waste management. This study contributes positively to environmentally friendly and sustainable industrial waste management in the Kendari area

The Workshop program for training in making soap from used cooking oil is one of the work programs of the Regular Community Service Program (KKN) 83 UIN Walisongo Semarang Post 16 which was carried out with the mothers of Jawisari Village at the Jawisari Village Hall, Limbangan District, Kendal Regency. This workshop program was motivated by the fact that many people still use used cooking oil repeatedly so that it can endanger their health and there are still those who dispose of used cooking oil carelessly so that it can cause environmental pollution. This work program aims to provide an understanding to the community about the negative impacts of used cooking oil waste on the environment and health, introduce the application of science and technology through training in processing used cooking oil waste, and provide training and assistance to control environmental pollution by providing education and training to local residents on how to process used cooking oil waste into liquid soap. This training workshop activity was carried out in three main stages, namely counseling, practicing making liquid soap, and evaluation. The results of this program show that the training workshop activities were successful and well-run where participants were able to understand the basic techniques of making liquid soap and gain direct experience in practice, the mothers who participated were also very enthusiastic and actively participated and felt happy to be able to learn to change used cooking oil waste into liquid soap products that are useful for everyday life. Making liquid soap from used cooking oil is an innovation that is not only useful for reducing waste oil that pollutes the environment, but also provides economic and social benefits for the community because it can open up business opportunities and support the local economy. Therefore, as a sustainable step, it is necessary to provide education to the community about the importance of recycling used cooking oil and improving technology in the production of liquid soap to be more efficient and environmentally friendly

The Workshop program for training in making soap from used cooking oil is one of the work programs of the Regular Community Service Program (KKN) 83 UIN Walisongo Semarang Post 16 which was carried out with the mothers of Jawisari Village at the Jawisari Village Hall, Limbangan District, Kendal Regency. This workshop program was motivated by the fact that many people still use used cooking oil repeatedly so that it can endanger their health and there are still those who dispose of used cooking oil carelessly so that it can cause environmental pollution. This work program aims to provide an understanding to the community about the negative impacts of used cooking oil waste on the environment and health, introduce the application of science and technology through training in processing used cooking oil waste, and provide training and assistance to control environmental pollution by providing education and training to local residents on how to process used cooking oil waste into liquid soap. This training workshop activity was carried out in three main stages, namely counseling, practicing making liquid soap, and evaluation. The results of this program show that the training workshop activities were successful and well-run where participants were able to understand the basic techniques of making liquid soap and gain direct experience in practice, the mothers who participated were also very enthusiastic and actively participated and felt happy to be able to learn to change used cooking oil waste into liquid soap products that are useful for everyday life. Making liquid soap from used cooking oil is an innovation that is not only useful for reducing waste oil that pollutes the environment, but also provides economic and social benefits for the community because it can open up business opportunities and support the local economy. Therefore, as a sustainable step, it is necessary to provide education to the community about the importance of recycling used cooking oil and improving technology in the production of liquid soap to be more efficient and environmentally friendly

The amount of waste and residual materials produced by human enrichment increases every year along with the increasing population. Empowering household units in managing domestic organic waste has the potential to reduce organic waste, including food waste. In addition to disposing of household organic waste, it can also be used as raw material for making compost. The purpose of this community service activity is to demonstrate liquid organic fertilizer production techniques to the local community and increase public awareness of the benefits of household waste processing. This activity was attended by 20 people from household representatives in Banteng Village, Tersono District, Batang Regency. The demonstration service method implemented was considered effective in terms of the interest and level of innovation of the community in utilizing empty land as a follow-up to making liquid organic fertilizer independently.

Training on processing liquid organic fertilizer from vegetable waste in Ngampel Wetan Village, Kendal, was conducted to increase community awareness and skills in utilizing household waste, especially vegetable waste, as a basic ingredient for making liquid organic fertilizer. This activity was motivated by the community's dependence on inorganic fertilizers in agriculture, so the potential of liquid organic fertilizer can be applied to farmers in Ngampel Wetan Village. With this training, the community is expected to be able to reduce dependence on chemical fertilizers by switching to organic fertilizers that are safer and more economical. The method used in processing vegetable waste as liquid organic fertilizer, observation, theory, product targets, implementation, and evaluation aims to solve problems in Ngampel Wetan Village, Ngampel District, Kendal Regency. It is hoped that with this training, the community of Ngampel Wetan Village can utilize vegetable waste into liquid organic  fertilizer and utilize it in agricultural activities so that liquid organic  fertilizer can overcome the problems of waste and limited fertilizer.   Pelatihan pengolahan pupuk organik cair dari limbah sayur di Desa Ngampel Wetan, Kendal, dilakukan guna  meningkatkan kesadaran dan keterampilan masyarakat dalam memanfaatkan limbah rumah tangga, khususnya limbah sayur, sebagai bahan dasar pembuatan pupuk organik cair. Kegiatan ini dilater belakangi oleh ketergantungan masyarakat terhadap penggunaan pupuk anorganik  dalam bidang pertanian, maka potensi pupuk organik cair dapat diaplikasikan ke para petani di Desa Ngampel Wetan.  Pelatihan pupuk organik cair kepada masyarakat diharapkan bisa  mengurangi ketergantungan pada pupuk kimia dengan beralih ke pupuk organik yang lebih aman dan ekonomis. Metode yang digunakan pengolahan limbah sayur sebagai pupuk organik cair yaitu observasi lapangan, teori, sasaran produk, pelaksanaan, dan evaluasi bertujuan untuk memberikan solusi atas permasalahan di Desa Ngampel Wetan Kecamatan Ngampel Kabupaten Kendal. Diharapkan, dengan adanya pelatihan ini, masyarakat Desa Ngampel Wetan   dapat memanfaatkan limbah sayuran menjadi pupuk organik cair dan memanfaatkannya dalam kegiatan pertanian, sehingga pupuk organic cair dapat mengatasi permasalahan sampah dan keterbatasan pupuk

The management of household waste is an urgent global problem that must be solved to ensure environmental sustainability and human health. However, products available on the market generally contain chemicals that can have a bad impact on health and the environment if used in the long term. The Thematic Community Service Lecture (KKN-T) in Sarirogo Village, Sidoarjo Regency, seeks to improve organic waste management through socialization of the production of organic liquid soap with the socialization method. This method contains the provision of materials, workshops and discussions with village health cadres. This socialization provides useful understanding and skills for the people of Sarirogo Village to utilize organic waste around to realize environmentally conscious village consumption and production in accordance with Sustainable Development Goals (SDGs) 12.

This activity aims to utilize household organic waste into liquid organic fertilizer (POC) in Jati Village, Sidoarjo Regency. Organic waste that generally comes from leftover food and vegetables is often just thrown away and causes an unpleasant odor and environmental pollution. Through counseling and practice of making POC, the community is expected to be able to process organic waste into fertilizer that is beneficial for plants. The method used involves counseling on the importance of processing organic waste, as well as practical steps in making POC, including preparation of materials, cutting, mixing with supporting materials such as brown sugar and EM4, fermentation process, filtering, and storage. The results of the activity show that the community has become more aware of the importance of processing organic waste and can practice making POC independently in their respective homes. This program not only reduces the amount of waste disposed of to landfills (TPA) but also increases soil fertility and contributes to environmental sustainability

Jati Village has a unique potential in processing organic waste into Liquid Organic Fertilizer (POC). The waste processing is an effort to preserve the environment and also provide added economic value to the local community. However, in making sales, the community in Jati Village has not implemented the right marketing strategy. Digital marketing offers various tools and platforms that can be used to promote POC. Digital marketing strategies that can be applied include the use of social media such as Instagram, Facebook, Tiktok and Youtube to promote POC through interesting and educational visual content, as well as direct interaction with consumers. By implementing digital marketing strategies, Jati Village can increase the visibility of their POC products, expand their customer base, and increase revenue. This can support the SDGs program, especially point 8, namely Equitable Village Economic Growth. Utilizing technology for marketing can help POC sales sell evenly.

The community service program at Muhammadiyah Gombong University involves industrial engineering students and lecturers who assist the women of 'Aisyiyah Puring Branch in making liquid organic fertilizer from household waste. The goal is to improve family nutrition by providing training on using household waste to create liquid organic fertilizer using the stacked bucket method. The resulting fertilizer is used to nourish garden plants as a sustainable source of family nutrition. The mentoring process consists of four stages: preparation, education, practice, and maturation. As a result of the program, 60% of the participants have successfully produced fertilizer using the stacked bucket method. The best practices for making fertilizer are then shared with the surrounding community to encourage the habit of managing household waste effectively.

Problems related to waste have become a hot issue in the community and have received serious attention from policymakers. One practical way to overcome this problem is to manufacture eco-enzyme products whose raw materials use organic waste. Eco enzyme is a fermented process from organic kitchen waste such as fruit and vegetable pulp, sugar, and water until it becomes the final product in liquid fertilizer. This service aims to describe community social activities to overcome waste problems using the eco enzyme concept. The activities carried out were providing counseling related to how to manage household organic waste into eco-enzyme products, introducing and training the use of composter technology to process household organic waste into eco-enzyme products, and motivating and encouraging people to manage household waste into products of economic value. This study uses several methods such as presentation, discussion, question and answer, training, and evaluation handled by lecturers of the Faculty of Agriculture, Timor University. The study results show that people can apply eco enzyme technology, know how to use it, and produce economic value from organic waste.

Single Cell Protein (PST) is the term used for proteins derived from microbes such as fungi, yeasts and bacteria. One way to deal with the abundance of tofu liquid waste is by using microbiological methods, namely utilizing tofu liquid waste as a substrate for the growth of Bacillus cereus microbial growth for single cell protein production. The purpose of this study was to determine whether tofu liquid waste could produce single cell protein from B. cereus culture and to determine the difference in protein production by adding nutrients to the fermentation medium. The research method used was experimental research, with the independent variables being MFLT1 fermentation medium (Tofu Liquid Waste Fermentation Medium with the addition of KH2PO4 nutrients and sugar) and MFLT2 medium (Tofu Liquid Waste Fermentation Medium with the addition of nutrients KH2PO4; (NH4)2SO4 and sugar); and the length of fermentation on days 0, 2, 4 and 6. While the dependent variables were the analysis of protein content, cell dry weight, glucose content, pH and temperature. The result data in this study were statistically analyzed using the two way Anova method. The results of this study showed that the highest protein content was obtained in MFLT2 medium, namely 0.73% (day 4); cell dry weight 0.253 g; glucose level 1.3339%; pH 3.9 and temperature 29.2oC. Meanwhile, in MFLT1 medium, the highest protein content was 0.46% (4th day); cell dry weight 0.286 g; glucose level 1.3342%; pH 3.9 and temperature 28.8oC. From the research that has been carried out, it can be concluded that tofu liquid waste can produce single cell protein from B. cereus culture and there are differences in protein production results with the addition of nutrients, where the protein content in MFLT2 medium is higher than protein content in MFLT1 medium.

Single Cell Protein (PST) is the term used for proteins originating from microbes such as fungi, algae, yeast and bacteria. Tofu liquid waste is an alternative medium that has the easiest source of carbohydrates, so it has the potential for the growth of Saccharomyces cerevisiae. The aim of this research is to determine whether tofu liquid waste can produce single cell protein from S. cervisiae culture and to determine differences in protein production with the addition of nutrients to the fermentation medium. The research method used is experimental research. The independent variables are MFLT1 medium (Tofu Liquid Waste Fermentation Medium with the addition of KH2PO4 nutrients and sugar) and MFLT2 medium (Tofu Liquid Waste Fermentation Medium with the addition of KH2PO4 nutrients; (NH4)2SO4 and sugar); as well as fermentation time on days 0, 2, 4 and 6. The dependent variables are analysis of protein content, cell dry weight, glucose content, pH and temperature. The data from this research were analyzed statistically using the two way Anova method. The results of this research obtained the highest protein content in MFLT2 medium at 0.52% (day 2); cell dry weight 0.49 grams; glucose level 1.3345%; pH 5.0 and temperature 25.5 ⁰C. Meanwhile, in MFLT1 medium, the highest protein content was obtained at 0.35% (4th day); cell dry weight 0.363 grams; glucose level 1.3342%; pH 4.7 and temperature 28.8 ⁰C. From the research that has been carried out, it can be concluded that tofu liquid waste can produce single cell protein from S. cerevisiae cultures and there are differences in protein production results with the addition of nutrients to the medium, where the results of the protein content in the MFLT2 medium are higher than the protein content in the MFLT1 medium.