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Green Management has become an important strategy for companies to face environmental challenges while increasing competitiveness in the global market. This study aims to analyze the implementation of Green Management as a strategic approach in increasing the company's competitive advantage. The research method used is a literature review of various relevant previous studies, including the concept of Green Management, its impact on operational efficiency, product innovation, and corporate image. The results of the analysis show that the adoption of Green Management contributes significantly to reducing operational costs through energy efficiency and waste management. In addition, companies that implement sustainable practices succeed in creating added value for consumers, increasing customer loyalty, and strengthening market positions. This study also identifies several challenges, including initial implementation costs and organizational resistance, which can be overcome through government policy support and increasing environmental awareness among stakeholders. Thus, Green Management not only supports environmental sustainability goals but also provides strategic advantages for companies in the long term.

The ever-increasing use of plastic bags has caused serious problems for the environment. Plastic waste is a material that is difficult to recycle and evaporate so that it can damage the environment. To overcome these issues, this community service activity conducts painting training on tote bags media as an alternative to reduce the use of plastic bags when shopping. This training aims to educate participants about the negative impact of plastic bags and provide skills and train creativity in creating bags that can be used repeatedly. This community service activity involved children from the LKS-A program at the Yayasan Sejubah Insan mulia. In this session, participants learned the techniques of painting and designing tote bags, so they not only gained knowledge, but also practical experience. The results of the training showed that participants became more aware of the importance of reducing the use of plastic and preferring tote bags as a replacement.

iquid waste produced by the food industry has complex characteristics that depend on production capacity. Liquid waste treatment is carried out physically, chemically, and biologically to reduce the concentration of pollutants that pose environmental problems. PT. X is one of the companies that produces food products. The company has been implementing an environmental management system, particularly wastewater treatment, using WWTP technology. The research aims to assess the performance of liquid wastewater treatment processes at PT. X. The research method used is descriptive, with data collection through direct observation and sampling at the WWTP outlet of PT. X. After testing, the research results show that all main parameters produced by PT. X's WWTP comply with the quality standards of the East Java Governor Regulation No. 72 of 2013. Overall, the WWTP performance remains good.    

The aim of this activity is to provide understanding to buffalo breeders regarding the importance of implementing biosecurity in preventing disease transmission in livestock, increase breeders' awareness of biosecurity measures that must be taken in the livestock environment, and equip breeders with practical knowledge about ways to prevent disease through implementation of biosecurity. This activity was carried out using an outreach method involving the community and the Head of Syota Hamlet and his staff. The methods used in this activity are: Material Presentation and Interactive Discussion. Some common biosecurity applications are access control, animal movement control, cleanliness and sanitation, waste management, health monitoring and vaccination. This socialization activity was successfully attended by around 35 people in the program target area. Most breeders showed an increased understanding of the importance of implementing biosecurity after following the socialization. Farmers claim to be ready to implement biosecurity measures such as quarantining new livestock, managing livestock waste, and providing good sanitation in the livestock environment. Some farmers also asked for further assistance regarding more specific biosecurity implementation, such as how to properly vaccinate livestock. In this socialization, several biosecurity measures were emphasized to be applied to buffalo livestock, including: quarantine of new livestock, cleanliness of pens and the environment, prevention through vaccination, waste management, protection of workers and visitors.

This study aims to examine the effect of water usage, energy consumption, carbon emissions produced, waste generated, independent Assurance, and environmental expenditures on Return On Equity. (ROE). This study provides information about entities that are socially responsible and whether their financial performance will improve or not after the implementation of corporate social and environmental activities. The independent variables in this study are water usage, energy consumption, carbon emissions produced, waste generated, independent Assurance, and environmental expenditures. ROE in this study is the dependent variable. The secondary data required for the study comes from the sustainability reports of 35 companies in 2023, and then the relationship between the independent and dependent variables is tested using EViews. The results of data management in the study indicate that there is an effect between water usage, waste generated, and environmental expenditures on ROE, thus supporting H1, H4, and H6. This condition is reversed with energy consumption, carbon emissions produced, and independent Assurance, where these three variables do not have an effect on ROE, proving that H2, H3, and H5 are not supported. The implication of this study is that management can achieve sustainable profits by disclosing activities that support environmental sustainability and using independent parties to guarantee the sustainability reports that have been created, thereby gaining more trust from stakeholders, which affects ROE.

Lean Management is a method that emphasizes reducing waste and increasing added value in healthcare service processes. Through a systematic literature review, this study identifies various aspects of Lean implementation in hospitals, such as reducing patient waiting times, optimizing resource utilization, and improving patient satisfaction. The findings reveal that Lean Management implementation not only supports operational efficiency but also enhances service quality and patient experience. The success of this method heavily depends on management support, active staff involvement, and adequate training. This study also highlights challenges such as resistance to change and budget constraints. These findings have significant implications for hospital managers and policymakers in formulating strategies to improve healthcare service effectiveness. Recommendations for future research include empirical studies examining Lean implementation in various hospital contexts, particularly in developing countries. This study aims to explore and analyze strategies for improving hospital operational efficiency through the Lean Management approach.

Eco-enzymes are liquid products resulting from the fermentation of organic wastes such as fruit and vegetable wastes, sugar, and water. The aim of this study is to investigate the potential of eco-enzymes as liquid organic fertilizers using organic waste from orange and pineapple peels. In the experimental design, he used a completely randomized design with three replicates of three organic waste compositions. The treatments used are pineapple peel, orange peel, and a mixture of pineapple and orange peel. Ecoenzyme is prepared by mixing organic waste with water and molasses in a ratio of 10: 3: 1 and fermenting it for 30, 60 and 90 days. The results showed that the composition of pineapple and orange peel produced an eco-enzyme solution with the highest nitrogen content, highest amylase enzyme activity, and highest acidic pH. The color of eco-enzyme varies from light brown to dark brown, and the resulting sour aroma indicates that the fermentation process is progressing smoothly.

Spentwash, a liquid waste byproduct of bioethanol production, is a potential raw material for biogas production due to its high organic content and abundant availability. PT Energi Agro Nusantara (ENERO) utilizes spentwash through anaerobic digestion processes to produce biogas, which is used as an alternative energy source.However, optimizing biogas production still faces various challenges, including the need for efficient monitoring and increased production volume. Internet of Things (IoT)-based technology offers a solution through real-time monitoring systems, enabling direct and accurate methane level measurements.This study aims to develop a prototype of a stirred digester equipped with an IoT-based methane gas detection sensor, using the MQ-2 sensor to detect methane gas.

Eco enzyme is a biocatalyst obtained from a fermentation process involving microorganisms, and has the potential to be applied in various environmental and industrial fields. This research aims to determine the optimum conditions for the volume of eco enzyme, determine the most influential variables between time and pH used during the eco enzyme fermentation process and the chemical characteristics of the eco enzyme product which was fermented for three months. Optimization method using the Central Composite Design – Response Surface Methodology (RSM) method. The comparison made in eco enzyme fermentation is water: organic waste: molasses = 10: 3: 1 = 5000 ml: 1500 gr: 500 gr. Fermentation for 3 months resulted in optimum conditions for making eco enzyme found at a reaction time of 96.213 and a pH of 5.207, with a maximum % yield of 10.24. The most influential variable in this research is pH. FTIR test results show the strongest absorption in the -OH (hydroxyl) group with alcohol properties at a wavelength of 3307.99 cm⁻¹, with a low transmittance of 48.2%. This group has antimicrobial properties that support the growth of good bacteria and other microbes.

Balerina Fashion faces the problem of waste in production process activities, which is caused by errors in pattern cutting, repetitive activities between production stages, and double work in the Quality Control (QC) division. This study aims to improve the efficiency of the production process by reducing waste using the Lean Manufacturing approach through the Value Stream Mapping (VSM) and Process Activity Mapping (PAM) methods. The results showed a significant increase in Value Adding (VA) time, from 56.00% to 84.88%. In contrast, Non-Value Adding (NVA) time decreased dramatically from 35.74% to 3.33%, while Necessary Non-Value Adding (NNVA) time increased slightly from 8.25% to 11.79%. These changes reflect productivity improvements and an increased focus on activities that provide direct value to customers. As a recommendation, the development of a new Standard Operating Procedure (SOP) is suggested to ensure each process runs according to standard. This SOP includes a detailed step-by-step guide for operators and QC, which was previously unavailable.

Biogas is a potential renewable energy source to meet energy needs, especially in remote areas that do not have access to electricity. The process of making biogas is carried out through anaerobic fermentation of organic materials such as vegetable waste, livestock manure and agricultural waste. This research aims to design a batch type biodigester that can produce biogas from a mixture of goat manure, chicken manure and vegetable waste. Biodigester is a reactor used to produce biogas. The stirred biodigester aims to mix the substrate evenly in the biodigester and prevent the formation of scum. The biodigester designed has a capacity of 120 liters with a stirring system to increase the efficiency of biogas production. The fermentation process was carried out for 21 days by monitoring parameters such as temperature, pH, Chemical Oxygen Demand (COD), and methane gas concentration (CH4). The results showed that the temperature and pH in the biodigester remained in optimal conditions for the activity of methanogenic microorganisms. The highest CH4 concentration measurement was recorded on day 20 at 60%, which indicates good biogas quality. In addition, the flame test on day 21 produced a blue flame, indicating a high CH4 content. The decrease in CH4 concentration at the end of the study was caused by the exhaustion of organic material. This research contributes to the development of efficient and environmentally friendly biodigester technology to produce biogas as a renewable energy source.

Teenagers today are filled with a number of rapid technological changes and developments. From a financial perspective, teenagers at this stage have a growing ability to understand the principles of saving and spending money, not only the basics, but also long-term goals. The three main areas that parents should focus on are income, savings, and responsible spending (shopping or investment). Problems that often occur in society (including teenagers) are such as wasteful living (lifestyle), online loan debt, and being trapped in online gambling. The emergence of several entertainment venues, cafes, and angkringan makes spending difficult for teenagers to control. The methods used in this service are lectures, simulations, discussions and questions and answers regarding the usefulness and benefits of understanding financial literacy. The results of this service show the different nature and patterns of financial management of teenagers requiring presentation patterns that need to be adjusted. In the implementation of the activity, there were participants (some) who were more enthusiastic or serious about this series of training. Presenters (speakers) require the application of andragogy model learning. This model is intended so that the presenter (material provider) and participants are not bored, comfortable in communicating and feedback appears quickly. In the future, training or workshops will be more directed to more technical or specific, for example capital market investment, mutual funds or other investment models.

This study aims to determine the implications of accounting information systems (AIS) as a business strategy for SMEs in Madiun City. Economic digitalization has a major effect on SMEs. One of the implications (Angelina Wijaya Tan et al., 2024) of this economic digitalization is the transformation carried out by SME actors into the digital era, including the use of Accounting Information Systems (AIS). Efficiency is needed by SMEs in order to keep up with the changing times. The use of this AIS can improve the reporting process and business processes carried out by SMEs. Another advantage (Ari Rohmana & Hwihanus Hwihanus, 2023) of using this AIS is to avoid recording errors and reduce waste. It can be seen that AIS has an important role in the business processes carried out by SMEs. The research method used is qualitative research. The respondents used were SMEs in Madiun City.  

This study evaluates the investment feasibility of UD Al-Mustofa, a tobacco business in Kendal, by considering aspects of production, storage capacity, waste management, and market expansion opportunities. UD Al-Mustofa is strategically located, ensuring high mobility, optimal production scale, and an effective waste management system, which includes recycling solid waste into organic fertilizer, processing liquid waste, and mitigating gas emissions by conducting tobacco drying in areas far from residential zones. Although the business has not yet obtained certification for international markets, financial analysis indicates that investment in this venture is viable. The calculations show a payback period of 2.01 years, significantly shorter than the projected 10-year investment lifespan. The Net Present Value (NPV) reaches IDR 489,345,567, indicating positive returns, with a profitability index of 0.854. The Internal Rate of Return (IRR) of 46% significantly exceeds Bank Indonesia’s interest rate of 5.75% in 2024, while the Average Rate of Return (ARR) of 78.8% is higher than the cost of capital. Based on these findings, UD Al-Mustofa has strong potential for further development, both in terms of production and market expansion..

POME is liquid wastewater derived from processing of palm fruit. POME contains nitrogen, phosphate, potassium, magnesium and calcium compounds, that can be used as a good fertilizer for plantations. However, before application, POME must be processed because direct use of unprocessed POME can damage the environment. PT XYZ utilizes POME as raw material for biogas through an anaerobic fermentation process to produce alternative energy for electricity generation, however, biogas production at PT XYZ  produces CH4 levels that do not meet the desired standard, namely 60%, while the value obtained is still 57%, so it can occure an incomplete combustion process in the engine. Therefore, research was carried out to analyze the influence of POME's Chemical Oygen Demand (COD) and the pH of POME as biogas raw material on the CH4 produced. Meanwhile, based on measurements of POME pH, fluctuations are caused by environmental conditions, therefore before the feed enters the biodigester, the first treatment is increasing pH until 6-7 to adjust the optimal conditions for bacteria working to break down organic substances.  The results shows that the estimated potential for a Biogas Power Plant (PLTBg) with a production capacity of fresh fruit bunches (FFB) of 60 tons/hour, the high generating capacity is influenced by the large COD value, meaning that the COD value greatly influences the CH4 produced, but must also be in accordance with Other factors that influence CH4 production such as pH, temperature, stirring and others.

Organic waste management has become an urgent global issue, as the increasing volume of waste poses serious challenges to the environment. One innovative solution that is gaining increasing attention is Maggot cultivation, through a bioconversion process. Maggot bioconversion not only addresses the problem of organic waste but also offers new economic opportunities through the production of high-value resources. In addition, maggot cultivation can also contribute to addressing the high price of protein sources and the increasing demand for animal feed. As highlighted by a study, maggot bioconversion technology can address three main problems: the generation of organic waste, the high price of protein sources, and the increasing demand for animal feed. (Handayani et al., 2021). Maggot (Hermetia Illucens) is a black soldier fly larva that has a chewy texture, high protein and has the ability to secrete natural enzymes that help improve the digestive system of livestock.

This study aims to examine the role of housewives in waste reduction through the implementation of 3R (Reduce, Reuse, Recycle) principles, serving as a means to influence waste management behaviors and foster the adoption of a community-driven circular economy. This approach is designed to involve the broader business environment and city government. The research employs a descriptive qualitative method, focusing on the collection of data and information without reliance on quantitative calculations.The findings highlight that the participation of housewives plays a significant role in engaging individuals and groups in waste management activities. The study underscores the importance of community involvement in providing suggestions, expressing opinions, and actively participating in waste management initiatives. The research emphasizes that housewives play a critical role in waste collection, aligning with the principles of 3R. This role contributes to fostering clean and healthy living behaviors within communities, reinforcing the essential contribution of housewives in achieving sustainable waste management practices.

Arumanis mango rind is an organic waste that contains secondary metabolites such as flavonoids. Many flavonoids are found in the rind of the arumanis mango, which acts as a very strong antioxidant and has the potential to heal wounds, including infected wounds. This study aims to determine the effect of arumanis mango (Mangifera indica L.) rind extract ointment on healing infected wounds caused by Pseudomonas aeruginosa bacteria, determine the effective concentration for healing infected wounds, and the histopathological decripstions. This research was an experimental study using male white rats which were divided into 5 groups, namely group I (control), group II (Gentamicin), group III (5% concentration), group IV (10% concentration) and group V (15% concentration). The parameters observed were the percentage of healing of infected wounds, epithelialization time, and histopathology. Then the data were analyzed using the ANOVA test followed by Duncan's further test.The results of the study were based on the group order above, from the parameters the average percentage of infected wound healing on 3rd day  was 29.73%; 48.84%; 45.95%; 42.81%; 42.33%, on 7th day it was 70.96%; 85.79%; 83.25%; 76.95%; 73.87%, and on the 14th day it was 89.89%; 93.32%; 93.87%; 92.67%; 91.48%. Epithecization time is 9; 6; 7; 8; 9 (day), for histopathology of fibroblast cells with a score of 1; 3; 3; 2; 2; for collagen fibers 1; 3; 3; 3; 3; for re-epithelialization 2; 3; 2; 2; 2; for inflammatory cells 0; 3; 2; 2; 2. The conclusion of the research is that arumanis mango peel extract ointment (Mangifera indica L.) has an influence on the healing process of wounds infected by Pseudomonas aeruginosa bacteria in male white mice, the most effective concentration and the best histopathological descriptions at a concentration of 5%.  

System dynamic models have been recognized as an effective approach in projecting and designing sustainable urban waste management systems. This study aims to explore the potential of system dynamic modeling in urban waste management. This study uses a literature study method with a qualitative descriptive approach that refers to various relevant previous studies. The results of the literature study show that the system dynamic model is able to map the complex relationships between variables in the waste management system, such as population growth, waste production, waste processing capacity, environmental impacts, and others. In addition, the system dynamic model can project future waste management conditions and prepare the most effective policy scenarios. Through simulations of various policy scenarios, the system dynamic model can provide insight into the impact of each scenario, both in terms of technical efficiency, operational costs, and reduction of waste generation in landfills. In implementing policy scenarios, collaboration between the government, community, and stakeholders is also needed in optimizing waste management programs.

Development of products based on ingredients rich in nutrients and bioactive compounds needs to be developed. High sources of antioxidants can be found from various fruits and their waste. Dragon fruit peels is known to contain various antioxidant compounds that are useful for body health. Instant dragon fruit peels drink is an instant food product processed from dragon fruit waste. The instant drink processing technique in this study uses conventional methods.The purpose of this study was to determine the effect of heating time on the chemical quality of instant drink powder in terms of water content and ash content and organoleptic tests were also carried out to determine the effect of the process on the sensory characteristics of color, taste, and aroma. Based on the results obtained, the water content of instant dragon fruit peels powder ranged from 1.97-1.98%, KND 3 samples with a heating treatment of 30 minutes had the highest water content (1.98%). The ash content value of the product ranged from 0.17-0.83% where the KDN3 treatment (heating time 30 minutes) showed the highest ash content (0.83%). The results of the analysis of this study showed a solubility of 97.6-99.15%. The results of the organoleptic test (hedonic test) on the color attribute showed a significant difference (P>0.05) between the 10 and 20 minute heating treatments with the product from the heating results with a heating time of 30 minutes where the panelists liked the color and aroma of the product from the 10 and 20 minute heating time treatments.