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Industry 4.0 has brought significant changes to human life across various sectors, including education. The education sector serves as a fundamental pillar for the growth and development of future generations, requiring collaboration from all stakeholders. Effective regulations and measures are essential to improve the quality of education and teaching.One activity within the education sector generates domestic wastewater that must be treated. Domestic wastewater refers to water waste from household activities, such as washing, kitchen use, and toilets. This study employs a quantitative method using secondary data on wastewater flow rates and parameters. The research stages include preparation, data collection (both primary and secondary), data analysis, and the preparation of environmental documents.Domestic wastewater is categorized into grey water and black water. The treatment of wastewater using anaerobic and aerobic biofilters has proven effective in reducing organic pollutant levels. The treated wastewater will be repurposed for irrigating Green Zone in school buildings.

Community empowerment in the formation and management of waste banks and used cooking oil waste in RW 03, Medokan Semampir Village, Sukolilo District, Surabaya City, aims to increase community awareness and participation in protecting the environment. This program was initiated as a response to the problem of solid and liquid waste which is often ignored, even though it has the potential to be managed into a resource with economic value. Through the waste bank, residents are involved in the process of managing household waste, sorting organic and inorganic waste, and utilizing it into valuable or recyclable items. Meanwhile, for used cooking oil waste, collection and education are carried out regarding the negative impacts of careless disposal of oil on the environment, as well as its use as raw material for biodiesel or other environmentally friendly products. The community empowerment approach is carried out through outreach, training and mentoring by the driving team. This program not only aims to improve the environment, but also opens up economic opportunities for local communities through a savings system from the sale of collected waste and used cooking oil. The results of this activity show an increase in environmental awareness among the community, as well as real economic benefits felt by the residents of RW 03.

Sculpture is a field of three-dimensional fine art that has dimensions of height, width, and length. According to M. Susanto in his book Diksi Seni Rupa (2002) Miniature is a model, replica, prototype, and scale model as well as various forms of fine art made in small sizes. The author uses the Assembly Technique which in the manufacturing process uses a tool, namely Solder to melt Plastic Waste. Waste is a very important environmental problem, especially in urban areas to create this work, the author uses the Sp. Gustami creation method. The stages of the process of creating a work of art from this method include: 1.Exploration Stage 2. Improvisation/Experimentation Stage 3. Formation/Manifestation Stage. The results of the creation of this Deer miniature statue produced 12 three-dimensional sculptures of various sizes. The process of creating this sculpture began with determining the design, assembling the frame, wrapping plastic around the frame and then melting it, after that forming the details and footing of the statue so that the statue can stand. after that coloring using a spray car, the last step is to give clear to the statue

Kuliah Kerja Nyata (KKN) yang dilaksanakan di Kelurahan Mundam bertujuan untuk memberikan kontribusi nyata bagi masyarakat setempat. Kegiatan ini fokus pada isu lingkungan, kesehatan dan pendidikan. Melalui berbagai program sosialisasi implementasi 3R (reduce, reuse, recyle) sabun cuci piring dari limbah kulit nanas dengan metode eco enzym, pengadaan tempat sampah, pemberian bibit dan penanaman pohon, sosialisasi DAGUSIBU (dapatkan, gunakan, simpan, buang), dan lainnya. Mahasiswa KKN berhasil meningkatkan kesadaran akan pentingnya kebersihan lingkungan, meningkatkan kualitas pendidikan anak-anak, atau memberdayakan UMKM lokal. Secara keseluruhan, KKN ini telah memberikan dampak positif bagi masyarakat Kelurahan Mundam dan diharapkan dapat menjadi model bagi kegiatan pengabdian masyarakat lainnya.

A study on the description of silver (Ag) levels in liquid waste fixer originating from a radiology installation before being processed at the Waste Treatment Installation is sometimes necessary to avoid environmental pollution. The time and place of this research were conducted at the radiology installation for approximately 1 (one) month. The purpose of this writing is to determine the description of the silver (Ag) levels of fixer in the radiology installation. This research method is field observation. and the processing of silver levels was carried out at the Medan standardization research agency (baristand) with researchers sending samples of 100 mg/l to be tested for silver levels. The thing studied in this study was to determine the description of silver levels using the Atomic Absorption Spectrophotometry (AAS) method. From the observation results after processing, the Ag content was 0.03 mg/L. After processing, the silver content was allowed to be discharged directly into the environment or public channels because the results were still below the established quality standards, namely 5.0 mg/L. However, it would be better if each hospital was advised to process the liquid waste at the Wastewater Treatment Plant to avoid environmental pollution.

Water absorption test and compressive strength test were conducted to determine the quality standards of paving blocks. This research was conducted by using a mixture of fly ash, bottom ash and cement. The tests carried out in this study were water absorption test and compressive strength test using 3 compositions of 5%, 8% and 12%. In each composition using 3 samples for testing. Tests were carried out with a vulnerable time between 7 days, 14 days and 28 days. The highest water absorption results in the 8% composition with water absorption of 1.467%. The highest compressive strength results in the 8% composition with a compressive strength of 10.479 Mpa.

In carrying out economic development in Indonesia, it has an impact on the rampant environmental damage which means the rampant environmental crimes that occur in Indonesia. Basically, these development activities contain the risk of environmental pollution and damage. Lack of supervision of environmental management permits by authorized agencies, law enforcement officers who are less than optimal in enforcing environmental law and weak criminal sanctions and compensation applied to business actors who violate, cause a lack of deterrent effect on business actors who violate. In addition, the desire of business actors who only prioritize profit and do not care about environmental recovery by ignoring the management of solid waste of Hazardous and Toxic Materials (B3) which can have a fatal impact on the environment. Management of hazardous and toxic waste (B3) in Indonesia is guided by Government Regulation Number 101 of 2014 concerning Management of Hazardous and Toxic Waste (B3) and Law Number 32 of 2009 concerning Environmental Protection and Management. B3 waste is a waste or waste whose nature and concentration contain toxic and hazardous substances so that directly or indirectly it can damage the environment, disrupt health, and threaten the survival of humans and other organisms. B3 waste is not only produced from industrial activities but household activities can produce several types of this waste. The method used is normative legal research by examining the regulations and laws that regulate it. This study aims to determine the relationship between positive legal regulations and the problem of B3 waste and how to overcome this B3 waste so that the environment is maintained.    

Kuliah Kerja Nyata (KKN) or Community Service Program is a student engagement initiative designed to apply academic knowledge and skills in real-world contexts. The KKN program in Lampuyang Village, Teluk Sampit District, Central Kalimantan, conducted from July 15 to August 29, 2024, focused on converting coconut shell waste into charcoal briquettes. Lampuyang Village possesses significant potential in coconut plantation, but the waste from coconut, such as shells and husks, is often underutilized. This KKN aimed to provide a solution by training the village’s youth in making charcoal briquettes, thereby enhancing their skills and creating new, environmentally friendly business opportunities. Through a Participatory Action Research (PAR) approach, the program actively involved the community at every stage, from observation, planning, implementation, to evaluation. As a result, the program raised awareness about the economic potential of coconut waste, reduced environmental impacts from open burning, and encouraged the youth to engage in local economic development. This initiative is expected to offer long-term benefits to Lampuyang Village’s community and strengthen the role of students as agents of social change.

Balai PIALAM, namely the Technical Implementation Unit (UPT) of the PUP-ESDM Office of the DIY Regional Government, is a centralized wastewater treatment plant. The problems that exist in Balai PIALAM are temporary storage of B3 waste does not meet the criteria, leaking storage, excessive capacity, methods that can be used to overcome B3 waste are using the HIRARC method, based on 9 activities of the B3 waste management process. Impact of hazard risk with research results Risk level: Medium 4 hazard effect 6.33%, High2 hazard effect 2.11%, extreme1 hazard effect 1.6%. The stages of making HIRARC are: decomposing the work into steps from the beginning to the end of the process, identifying the source of danger, determining the hazard posed by means of interviews, observations, observations, brainstorming, determining the impact on environmental workers, assessing the likelihood of occurrence is used to determine risk rating. Testing period January 2024, t BOD Input (min 99 mg/L,max 458 mg/L), Output (min 10 mg/L,max 59 mg/L), Average (input 206 mg/L, output 30 mg/L), testing period February 2024, testing t BOD Input (min 84 mg/L, max 288 mg/L), Output (min 12 mg/L, max 43 mg/L), Average (input 154 mg/L, output 24 mg/L). Use of APD such as laboratory coats, masks, special gloves, safety shoes, protective helmets and life vests, face shields. As well as implementing SOP. Control of hazards or risks both in laboratory and operational testing activities using APD: gloves, laboratory coats, safety shoes, protective glasses, masks, life vests, and special vests according to the work done and affirmation of SOP.

Manihot Food Box Eco-Green is an innovative food container made from cassava peel waste. Cassava (Manihot esculenta Crantz) is a plant widely grown in tropical regions, especially in Indonesia. Despite its many uses, cassava peels are often discarded and contribute to environmental pollution. This project aims to process cassava peel waste into eco-friendly food boxes. The production process involves three main stages: survey, production, and marketing. The product is designed with a simple and practical shape, ideal for the food business, and offers significant profit potential. The marketing strategy includes both offline (brochures) and online channels (Shopee, Instagram), with a competitive price of IDR 36,000 per pack (12 units). This project not only presents profitable business opportunities but also helps reduce environmental waste by utilizing cassava peels.

The community that will be the target of the outreach activities are community members who are active in Islamic Education Institutions. The main activity is to educate students who aim to master the knowledge of the Quran and also teach Islamic morals in everyday life located in Penyengat Rendah Village, Telanai Pura District, Jambi City, Jambi Province. The activities that have been carried out are carrying out activities with the outreach method and followed by field practice and questions and answers regarding the material that has been given. The outreach material provided was about environmental and health aspects related to organic waste management activities and methods for making good and correct biopore infiltration holes that are environmentally friendly. The response from participants in this community service activity was seen to be positive and had a high enthusiasm to apply the knowledge that had been gained and were aware of the importance of environmental aspects that must be considered in waste management, especially organic waste. After this activity was carried out, it is hoped that the community can disseminate the information and knowledge that has been received to be applied to other communities.

In Indonesia Occupational Safety and Health (K3) is often ignored, this can be seen from the many cases in companies that experience work accidents and other Occupational Safety and Health (K3) problems because companies pay little attention to K3 aspects and neglect to apply the principles of Occupational Safety and Health (K3) according to the standard. To find out whether the CV. Green Nature has/has not applied the principles of occupational safety and health (K3) to industrial waste management workers. This type of research is descriptive qualitative with data collection techniques in the form of observation, interviews, and literature study. Shows that CV.Hijau Alam has not optimally applied the principles of occupational safety and health (K3). implementation is constrained due to low awareness of the importance of OSH.

The implementation of this service program is intended so that the community can contribute to reducing environmental pollution as well as so that the community can also utilize plastic waste into valuable products. East Cempaka Mulia Village is a village located along the Cempaga River, the problem in this village is one of them related to plastic waste. This program aims to encourage residents to utilize waste that produces use value and also provide creative solutions in more sustainable waste management.  The PAR (Participatory Action Research) method is a service approach that focuses on identifying problems in society and finding solutions to them (Problem Solving). The result of the service, namely overcoming plastic waste, is by recycling plastic waste using the ecobrick method, namely utilizing waste through plastic bottles.

Hari Wahyudi, English translation. This study aims to describe the effectiveness of the company's waste control at the Prabumulih City Environmental Service. This research was conducted for three months using a descriptive qualitative approach. Data was collected through interviews, observation, and documentation. Data analysis techniques were carried out by presenting data, reducing data, and drawing conclusions. The results showed that from the aspect of Organizational Characteristics, namely the form of supervision carried out by the Environmental Service through employees who worked in the field, it was approved and recommended by the Head of the Department of Environment. For specialized employees or field staff who carry out supervision, there must be a specialization to support better work abilities, as well as DLH employees in carrying out their duties, namely supervising companies that are directly related, more flexible and able to adapt, if this is indeed the case. not something urgent. For the Environmental Characteristic aspect, it is important for employees to adapt to the work environment, in this case, the Prabumulih City DLH employees must be able to adjust the conditions in the DLH office and also adapt to the conditions in the field in carrying out supervision in the hope that any decisions to be taken are right there. Aspects of Employee Characteristics, namely DLH employees in having good quality because they are in accordance with the educational qualifications and skills possessed, then also in carrying out employee duties ensuring that every company in Prabumulih City can progress but still ensuring the environment in the form of rivers, land and others does not damaged by pollution. As for the aspects of Management Policy and Practice, namely internal vertical and horizontal communication within the DLH Department, it is quite good, then communication with other institutions is also quite good. Then at the DLH Office, there are rarely awards given to employees, so it can be said that the reward system has not been able to stimulate employees to seek effective performance creation and performance and performance development.

Cassava waste is commonly used as animal feed or simply discarded by the community of Sumberpitu Village, Cepu Subdistrict, Blora Regency. Waste that is discarded without being processed can pollute the environment and cause disease. Therefore, the aim of this community service activity is to provide training on processing cassava peels into delicious and safe food, encouraging the community to start entrepreneurial ventures to improve the local economy. This activity includes a brief explanation of cassava peel waste processing, followed by a demonstration of making cassava peel chips. The method used in this activity consists of three stages: identifying the problem, program planning, and program implementation. This initiative is expected to reduce cassava peel waste in Sumberpitu Village and increase community income through creative and innovative waste processing.

Hari Wahyudi, English translation. This study aims to describe the effectiveness of the company's waste control at the Prabumulih City Environmental Service. This research was conducted for three months using a descriptive qualitative approach. Data was collected through interviews, observation, and documentation. Data analysis techniques were carried out by presenting data, reducing data, and drawing conclusions. The results showed that from the aspect of Organizational Characteristics, namely the form of supervision carried out by the Environmental Service through employees who worked in the field, it was approved and recommended by the Head of the Department of Environment. For specialized employees or field staff who carry out supervision, there must be a specialization to support better work abilities, as well as DLH employees in carrying out their duties, namely supervising companies that are directly related, more flexible and able to adapt, if this is indeed the case. not something urgent. For the Environmental Characteristic aspect, it is important for employees to adapt to the work environment, in this case, the Prabumulih City DLH employees must be able to adjust the conditions in the DLH office and also adapt to the conditions in the field in carrying out supervision in the hope that any decisions to be taken are right there. Aspects of Employee Characteristics, namely DLH employees in having good quality because they are in accordance with the educational qualifications and skills possessed, then also in carrying out employee duties ensuring that every company in Prabumulih City can progress but still ensuring the environment in the form of rivers, land and others does not damaged by pollution. As for the aspects of Management Policy and Practice, namely internal vertical and horizontal communication within the DLH Department, it is quite good, then communication with other institutions is also quite good. Then at the DLH Office, there are rarely awards given to employees, so it can be said that the reward system has not been able to stimulate employees to seek effective performance creation and performance and performance development.

Program sosialisasi pengelolaan limbah rumah tangga ini merupakan salah satu bentuk kontribusi yang dilakukan mahasiswa guna mengatasi permasalahan limbah di masyarakat. Tujuan dari sosialisasi ini adalah untuk meningkatkan kesadaran masyarakat akan pentingnya pengelolaan sampah yang benar. Kegiatan ini meliputi pemberian informasi mengenai dampak negatif sampah terhadap lingkungan dan mengedukasi masyarakat mengenai cara pengelolaan sampah yang efektif seperti pemilahan, pengurangan, dan daur ulang. Hasil kegiatan ini menunjukkan adanya peningkatan kesadaran masyarakat setelah mengikuti sosialisasi, namun masih diperlukan upaya berkelanjutan untuk mengubah perilaku menjadi tindakan nyata.

The use of chemical fertilizers in agricultural activities in Wonosobo can cause heavy metal contamination and soil damage on agricultural land. Gunturmadu Village is a village located in Wonosobo Regency with the majority of the population working as farmers. Based on observations, organic materials in the form of soybean boiled water waste in Gunturmadu Village have not been widely utilized. KPM students in Gunturmadu Village planned a socialization program for the practice of making liquid organic fertilizer from soybean boiled water waste using the batch broth fermentation method as an effort to realize a sustainable environment by preventing damage to soil nutrients, thereby increasing agricultural yields and increasing knowledge and skills in making liquid organic fertilizer. The activity was attended by 26 PKK RW members of Buaran Hamlet, Gunturmadu Village and 13 KPM students with direct counseling and practice methods. Data collection was in the form of pre-tests and post-tests. The research stages include the preparation, counseling, and evaluation stages. The results of the study showed an increase in knowledge and skills in making liquid organic fertilizer by 70.6% and a decrease in the percentage of misunderstanding by 70.96%.

This study examines the management of plastic waste into ecobricks through the collaboration of UIN Walisongo Real Work Lecture (KKN) students with SDN 2 Rowosari.  The purpose of this study is to describe the process of managing plastic waste into ecobricks and analyze the impact of collaboration on environmental awareness at SDN 2 Rowosari. The research method used is descriptive qualitative with data collection techniques through observation, interviews, and documentation. The results show that the process of managing plastic waste into ecobricks involves the stages of collecting, washing, drying, and packaging plastic in bottles. The collaboration between KKN students and SDN 2 Rowosari proved effective in increasing the environmental awareness of students and teachers, as well as encouraging active participation in plastic waste management.  The development of the Ecobrick Garden as a result of this collaboration is expected to be an innovative and sustainable model of environmental learning.

Used cooking oil cannot be reused due to its changed physical and chemical structure, or commonly referred to as “minyak jelantah”. Repeated use of minyak jelantah can pose a risk of various diseases. Meanwhile, “minyak jelantah” is included in waste that is difficult to decompose if it is just thrown away. The utilization of used cooking oil into candles is a solution to this problem. Based on research using observation methods in Sarimukti Village residents, and experimental research methods and documentation, minyak jelantah waste can be reduced by being utilized into aromatherapy candles. Based on the organoleptic test, the results show that the color is not suitable, while the shape and smell are suitable based on the concentration of stearic acid and telon oil added. Based on the burn time, the more telon oil added, the faster the candle runs out.