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This research shows that plastic bricks use plastic waste as a mixed material, offering an innovative solution in the construction sector that is more environmentally friendly and sustainable. The raw material used in making these bricks is plastic waste, which will reduce the amount of plastic waste thrown away in landfills. And the use of recycled plastic waste 5 (PP) polypropylene as a binding material in the paving block mixture produces maximum compressive strength.

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.

Bahrain still suffers from electronic solid waste annually due to ineffective waste ‎disposal management. Compared to other Gulf Cooperation Council (GCC) countries, Bahrain ‎generates the largest waste quantity per person, approximately 1.2 to 1.8 ‎million tons of hazardous waste annually. Therefore, the present research article aims to manage the e-waste discarding mitigation by arranging the waste collection, ‎presenting it for sale/purchase/donation (C2C, C2B, B2G), and organizing the waste recycling ‎process. Derived from this aim, the article explores the e-waste ‎phenomena and proposes the development of an e-waste mobile application named “Athar”. ‎ The significance of “Athar” lies in firstly, enabling citizens to live in a ‎clean environment with limited diseases. Secondly, assisting the ‎Ministry of Tourism attract more tourists. ‎ The research article embraces a seven-phased Agile-based SDLC method to analyze, design, implement, test, and evaluate Athar through the utilization of several research techniques, including questionnaires to collect user and system requirements, other techniques such as data flow diagrams, entity relationship diagram, ‎database schema, etc. for the system design, ‎OutSystems programming language to implement the mobile app, and one questionnaire based on ‎Nielsen heuristics for usability evaluation. Findings demonstrate the adequacy of the Athar application with an outstanding usability score of 89.1%.

Parepare City is located on the coast with significant fisheries and maritime potential. The processing and consumption of shellfish in this city produces a lot of shellfish waste, which is often not utilized and accumulates into an environmental problem. To improve the properties of concrete, several types of additives that have certain functions are added to the concrete mixture, namely increasing the workability, durability, and hardening time of concrete. This study aims to determine the compressive strength of concrete and the composition of coarse aggregate of shells with superplasticizer added materials that are optimally produced. Using an experimental method carried out at the Laboratory of Structure and Materials, Muhammadiyah University of Parepare. The results showed that substitution of coarse aggregate with 5% shellfish waste and 0.5% superplasticizer increased the compressive strength of concrete at the ages of 7, 14, and 28 days. The 10% substitution still meets the compressive strength requirements at 28 days, although slightly lower than normal concrete. Substitution of shells up to 5% increases the compressive strength of concrete, and the 10% content is optimal, reaching the maximum value without significant decline. It is recommended that the use of shells as a substitute for coarse aggregate does not exceed 10% for optimal results and meets the planned compressive strength of 25 MPa.

In Sesaot Village, Narmada Sub-district, West Lombok Regency, students from Mataram University are implementing the Community Services (KKN PMD). Through a number of initiatives such as cleaning riverbanks, planting trees, maintaining tourist trails, promoting waste management in the community, and providing training on the utilization of plantation products, the main objectives of this program are community economic empowerment and environmental quality improvement. These initiatives have successfully raised community awareness of the importance of protecting the environment and encouraged the conversion of plantation produce into high-quality and profitable goods. The program actively involves the community in all stages, from planning to evaluation, through the use of participatory methodologies. As a result, the environment has improved, the area has become more beautiful, and the empowerment of the community, especially the women who run MSMEs, is expected to contribute to the community. All of these developments are expected to have a long-term positive impact on the welfare of the village community.

Waste is the useless remains of daily human activities that are thrown into the environment. Waste management is the activity of collecting, transporting, processing and recycling waste which is carried out to reduce the impact of waste on health, the environment or aesthetics, as well as to reduce the amount of waste. The aim is to educate the public about the importance of waste management so that people have the awareness to change their behavior in managing it. rubbish. The method used was lectures and using leaflets to the community. This method explains the concept of waste and waste management. This extension was highly supported and welcomed by the community and village officials. This can be seen from the enthusiasm of the community in listening to the material presented and wanting to hold other activities/programs regarding waste management in Sungai Lueng Village which will certainly benefit the surrounding community.

Nyapah sub-district, which is one of the 14 sub-districts in Walantaka District, has problems faced by the community and the nyapah sub-district apparatus itself, namely not understanding and knowing about the legal regulations related to waste management, as well as handling waste that can actually provide good benefits from an environmental perspective. as well as the economy of the community in Nyapah sub-district. And there is also no Waste Bank for waste management. This service activity is important in providing legal education about waste and so that the community in Nyapah sub-district is legally aware of the importance of good and correct waste management in accordance with applicable legal regulations. The method used is descriptive with a qualitative approach by collecting data, including interviews, observation and documentation. The result of this service is that the community and Nyapah sub-district officials can know and understand the regulations regarding waste management contained in the law. No. 18 of 2008 concerning Waste Management, Government Regulation no. 27 of 2020 concerning Specific Waste, Minister of Environment and Forestry Regulation No.  14 of 2021 concerning Waste Management at Waste Banks, and Serang City Regional Regulation Number 7 of 2021 concerning Waste Management.

The problem of clinker damage during the loading process, many problems that arise cannot be separated from several natural factors and errors in procedures during the loading and unloading process. The aim of this research is to determine the impact, causes and efforts to prevent clinker damage during loading activities at the PT Special Terminal. Semen Indonesia Tuban. The research method used is a qualitative descriptive research method. This research was carried out at PT. Varia Usaha Bahri Tuban branch. The techniques used in collecting data are through observation, interviews and documentation. The results of this research are that the occurrence of clinker damage is the fault of the loading and unloading workers (TKBM) in maintaining the cleanliness of organic and inorganic waste in the stacking yard area and the foreman must carry out weather observations.

Waste is one of the problems that is quite difficult to deal with in Indonesia. This happens because of the people's habits as consumers who always produce waste. Therefore, changing used goods into goods that can be reused can help reduce environmental pollution. Waste management is one of the main challenges in achieving environmental sustainability. This community service program aims to develop a used goods creation business based on business and environmental sustainability in Kembangan Selatan Subdistrict. The methods used include outreach, training and assistance to local communities in processing used goods into economically valuable, creative and innovative products. Through this program, it is hoped that the community can improve their skills in processing waste, create new business opportunities and reduce the amount of waste generated. pollute the environment. The results of this activity show increased awareness and community participation in protecting the environment, as well as the formation of several new business groups engaged in recycling. Business sustainability is measured through indicators of increasing income and quality of life for the community. Thus, it is hoped that this program can become a business development model that is not only economically profitable, but also contributes positively to environmental sustainability.

Utilizing white pepper peel waste (Pipper nigrum L.) as compost can minimize the problem of pepper peel waste. This research uses black soldier flies (BSF), the results of which are maggots as fertilizer for the growth of potpourri tomato plants (Lycopersicon pimpinellifolium). The aim of this research is to determine the quality of compost from white pepper skin waste resulting from bioconversion using BSF, and its effect on the growth of potpourri tomato plants. This research used an experimental method by pre-fermenting white pepper skin waste using 50 ml EM4 for 2, 3, 4 weeks and then using it as food for BSF larvae. Next, the cassava results are applied to potpourri tomato plants with P1 (1 kg of soil: 5 kg of cassava 2 weeks), P2 (1 kg of soil: 5 kg of cassava 3 weeks), P3 (1 soil: 5 kg of cassava 4 weeks), P4 (1 kg : 10 kg cashgot 2 weeks), P5 (1 kg : 10 kg cashgot 3 weeks), P6 (1 kg : 10 kg cashgot 4 weeks) and control (soil without cashgot). The data were analyzed using ANOVA via the SPSS 26 application. The cassava application showed that there was a significant effect on the highest plant height P6 (22.98 inches), the highest stem diameter P1 (4.58 mm), the highest number of leaves P3 (108.67 leaves), the highest fruit diameter was P2 (17.97) and the highest fruiting time was P0 (29.75). The highest number of fruit is P1 (13 fruits/plant), the highest fruit weight is P5 (39 grams/plant). In conclusion, P1 treatment is the best quality compost for the growth of potpourri tomatoes which is thought to have N (0.22%), P (0.15%), K (0.01%), C-organic (5.84) and a C/ N (26.5).

Garbage will cause health problems if not managed properly. The increase in waste along with the rate of population growth and ignorance of sorting waste according to its type is a problem that must be resolved. As is the case with students at SDN Sendangrejo II Lamongan. This study aims to determine the effect of audio-visual education on knowledge of sorting waste at SDN Sendangrejo II Lamongan. The study used a pre-experimental one group post test design. The population of all students in grades 1-6 at SDN Sendangrejo II Lamongan was 44 respondents using SPSS 26.0 using a total sampling technique, the research instrument used a questionnaire, then the results were analyzed using the Wicoxon test with a significance level of p <0.05. The results of the study showed that before being given audio-visual education about sorting waste, it was found that almost all students (81.8%) had a low level of knowledge and after being given audio-visual education, it was found that most students (72.7%) had a good level of knowledge. Video is one of the educational media that can increase one's knowledge because the material presented can be received through the senses of sight and hearing. It is recommended that educators use this audio- visual technique in providing education or learning activities.

The development of agricultural technology can help communities to establish food security. This can be expected to help fulfill food as one of the basic needs of human life which is increasing. Because humans are wasteful, there is a need for agricultural technology that is easy to apply to the home, cheap to manufacture, and environmentally friendly. Therefore, we have a solution: create hydroponics using plastic bottles of trash media. The method used is socialization using PowerPoint media which contains knowledge about farming using a hydroponic and zero-waste system. With this activity, it is hoped that the community will utilize the knowledge about growing hydroponically by utilizing plastic waste. The results of this planting can be used for food security and also plastic waste processing in Blurukidul village.

Plastic waste is damaging the environment and encouraging people to choose eco-friendly products. Indonesia's waste problem is urgent. Companies are starting to develop products that are safe for the environment. Consumers are turning to chemical-free products to safeguard their health and the environment. CLEO, a drinking water brand from PT Sariguna Primatirta, has been managing this since 2004. CLEO is known for its prices and product quality. This study looks at how green marketing, brand image, and price perceptions affect buying interest in CLEO products among consumers in Tangerang. It uses quantitative methods and a questionnaire. The data analysis is multiple regression analysis. This study shows that green marketing and brand image affect buying interest in CLEO products, but price perception does not. All three variables affect buying interest in CLEO products.

Financial management by the Bahara Village Government is one form of implementing the Village Government's authority to manage village assets, but this has not yet shown optimal implementation because there are still problems in managing village finances, namely: The Village Government is less than optimal in discussing and preparing Cost Budget Plans (WED). Making village financial plans still involves wasteful costs. The research objective to be achieved is to determine the effectiveness of village financial management by the Bahara Village Government, Panjalu District, Ciamis Regency, Fiscal Year 2022. The results of the research are that the effectiveness of village financial management by the Bahara Village Government, Panjalu District, Ciamis Regency, Fiscal Year 2022 has not been implemented optimally. Therefore, the Village Government should be more aware of the aspirations conveyed by the community, providing more firmness for supervisors and workers to pay attention to every direction and managerial time.

Financial management by the Bahara Village Government is one form of implementing the Village Government's authority to manage village assets, but this has not yet shown optimal implementation because there are still problems in managing village finances, namely: The Village Government is less than optimal in discussing and preparing Cost Budget Plans (WED). Making village financial plans still involves wasteful costs. The research objective to be achieved is to determine the effectiveness of village financial management by the Bahara Village Government, Panjalu District, Ciamis Regency, Fiscal Year 2022. The results of the research are that the effectiveness of village financial management by the Bahara Village Government, Panjalu District, Ciamis Regency, Fiscal Year 2022 has not been implemented optimally. Therefore, the Village Government should be more aware of the aspirations conveyed by the community, providing more firmness for supervisors and workers to pay attention to every direction and managerial time.

Infrastructure development contributes to increasing the competitiveness of domestic products, employment energy absorption, and regional growth. Therefore, a strong, rigid and stable construction is needed. The use of materials for construction needs to be considered, especially commonly used materials such as concrete. This research aims to analyze the effect of variations in granite content as a partial substitution for coarse aggregate on the bond strength of BRA (Concrete Recycled Aggregate) concrete. Experimental methods were used in this research. The concrete mix design uses a variety of granite waste with a content of 0%; 15%; 30%; and 45%. The test object used was a concrete cube with a side length of 20 cm. The bond strength of the concrete is tested using a Universal Testing Machine (UTM) and a dial gauge. Based on research, the maximum bond strength value is obtained at a granite content of 30%. The addition of granite waste causes an increase in the bond strength value. The bond strength value of concrete when slip occurs is 0.25 mm at 0% granite content; 15%; 30%; and 45% each valued at 14.61 MPa; 15.44 MPa; 18.62 MPa; and 17.15 MPa. Concrete bond strength value at maximum load at 0% granite content; 15%; 30%; and 45% each valued at 22.42 MPa; 22.59 MPa; 24.01 MPa; and 23.12 MPa.

Butuh Village is one of the villages in Butuh District,  Purworejo Regency, Central Jawa Province. The villages’s need for awareness of adequate sanitation is still quite low. This can be proven by the fact that there are still many houses that do not have adequate domestik waste processing infrastructure. AS we know, if we dispose of domestik waste in the form of grey water and black water directly into the environment without a good waste processing system, it will pollute the environmen. The aim of this design is to determine the domestik wastewater treatment bulding in Butuh village using the hierarchical method.The final calculation using the hierarchical method resulted in thr selected domestic wastewater treatment being the Anaerbic Buffled Reactor (ABR) using 4 parameters in the form of maintenance operatinal cost, land area used, construction costs and removal efficiency. The Anaerobic Buffled Reactor (ABR) is planned to have 5 compartments with a BOD removal efficiency of 84%, construction cost of Rp. 67.899.607, the land area required is 45 m2, and operational costs are Rp. 2.605.281 and maintenance is relatively easy.    

Waste cooking oil/used cooking oil which is blackish brown is residue from the frying process that still contains fatty acids which have the potential to be used to make soap.  At the Al Ihsan Puteri Islamic boarding school, Banjarmasin used cooking oil waste has not been managed well. This activity aims to educate the Islamic boarding school community (santriwati) and boarding school administrators about making washing soap from used cooking oil as a solution so that used cooking oil can be reused in other forms. Participants in the activity were 15 female students at the Al Ihsan Puteri Banjarmasin Islamic Boarding School. This activity consists of discussion (counseling) and direct practice. The chemistry knowledge education material explains the impact of used cooking oil on the body, while the soap-making training material explains the cold saponification method through demonstrations. The service results show that almost 100% of the students who initially did not know how to reuse used cooking oil in soap, now know how to reuse used cooking oil. Students also increase their knowledge and skills in reacting with materials in the saponification process.

Mojowangi Village, Mojowarno District, Jombang Regency, is a village that has strong cultural potential. However, this village also faces environmental weaknesses in the form of increasingly worrying plastic waste problems. Ecobrick socialization in Mojowangi Village is a very important effort to overcome the problem of plastic waste. Using a participatory method, this activity involves PKK mothers in making ecobricks, namely plastic bottles filled with solid plastic waste. The main objective is to increase community awareness and skills in sustainable plastic waste management. This activity also contributes to achieving the Sustainable Development Goals (SDGs), especially goals number 11 (Sustainable Cities and Settlements) and number 12 (Responsible Consumption and Production). The results of the activity show an increase in community awareness, skills, and active participation, as well as opening up new economic opportunities for the community. Thus, this activity not only has a positive impact on the environment but can also improve the economy of the local community

Parents' knowledge of children's littering behavior is an important thing that needs to be considered by every parent. That needs to be considered by every parent, because it can help children's behavior towards a positive direction, especially in disposing of garbage. The purpose of this study was to determine the relationship between the level of knowledge parents with children's behavior of throwing garbage. This research design uses correlation analytics with crosssectional approach. The sample of this study was 63 respondents using random sampling technique. The independent variable in this study is parental knowledge, while the dependent variable in this study is children's littering behavior. This study is the behavior of children to dispose of garbage. Data were collected using a questionnaire of parental knowledge knowledge questionnaire and observation of children's waste disposal behavior. Data were analyzed using the chi-square test with a significance level of p<0.05. p<0.05. The results showed that almost half (46.0%) of parents' knowledge was good, and more than half (66.7%) of children's behavior was good. More than half (66.7%) of children's behavior to dispose of garbage in its place with their own awareness. The results of data analysis the results of data analysis obtained a value of p = 0.000 <0.05, meaning that there is a relationship between parental knowledge and children's behavior. Behavior to dispose of garbage. The results of this study are expected to be used as information about development in the community in parental knowledge with children's behavior of throwing garbage.