Publication Search

The discharge of surfactant-laden wastewater from the rapidly expanding laundry industry poses significant environmental risks, especially in densely populated urban areas. While constructed wetlands (CWs) and Eco-Enzyme technology have shown promise for surfactant remediation, their standalone application requires long hydraulic retention times (HRTs), limiting practical implementation. This study evaluated the efficacy of a novel integrated system combining a subsurface constructed wetland (SSFCW) with fruit peel-derived Eco-Enzyme to treat synthetic laundry wastewater. Over a 6-day treatment period, the combined system achieved a remarkable surfactant removal efficiency of 99.63%, reducing the concentration from 225 mg/L to 0.835 mg/L—well below the regulatory threshold of 3 mg/L. The synergistic degradation mechanism involves enzymatic hydrolysis via Eco-Enzyme lipase and protease activity, complemented by microbial mineralization in the wetland rhizosphere. This system maintains optimal environmental conditions, with a stable pH of 6.85-7.32 and a temperature of 30.9-35.2°C, supporting robust biological activity. These findings demonstrate that the integrated Eco-Enzyme/SSFCW system overcomes the limitations of conventional HRT approaches, offering a highly efficient, sustainable, and practical decentralized wastewater treatment solution for the laundry industry.  

Cooking oil is a staple food widely used in daily cooking. However, repeated use of cooking oil, resulting in its conversion into used cooking oil, can have negative impacts on both health and the environment. Used cooking oil that has changed color and quality is carcinogenic and has the potential to increase the risk of cardiovascular disease if consumed again. Furthermore, improper disposal of used cooking oil can cause environmental pollution because it is difficult to decompose. This study aims to examine the wise management of household waste, especially used cooking oil, by utilizing it into products with utility value. One form of utilization is processing used cooking oil into environmentally friendly soap for laundry purposes. This activity was carried out as a form of community service through training in making soap from used cooking oil with the addition of essential oils for aromatherapy for residents of Pasar Rawa Village, Gebang District, Langkat Regency. The research method used was qualitative, with observation and direct participation in the training activities. The results showed that participants, particularly housewives, demonstrated high enthusiasm and were actively involved in both the presentation and the soap-making practices. This activity not only raised public awareness of the importance of managing used cooking oil waste but also provided new skills that have the potential to support family economic growth.

This study aims to evaluate the effectiveness of the implementation of the marketing mix in SMEs in the laundry service sector, focusing on the 7P elements: product, price, promotion, place, process, people, and physical evidence. The research uses a descriptive qualitative method with data collection techniques including interviews, observations, and documentation with laundry business owners. The results show that a diverse range of services, competitive pricing, strategic location, and structured work processes contribute to the sustainability of the business. However, challenges such as unpredictable weather, timeliness, limited facilities, and suboptimal promotion still pose barriers to improving service quality. The findings highlight the importance of strengthening digital promotion, modernizing equipment, and improving the accuracy and consistency of human resources (HR) to enhance the effectiveness of the marketing mix. With improvements in these areas, laundry SMEs can enhance their competitiveness and provide better service to customers, thus strengthening their position in a competitive market.

The mentoring program was implemented to address issues related to the low practice of financial recordkeeping and the suboptimal utilization of digital marketing among Aisyah Laundry MSMEs in Dusun Gatak. The objective of this activity was to implement a simple financial recording system, build a basic understanding of the separation between personal and business finances, and introduce digital marketing strategies aimed at enhancing business management effectiveness. The methods employed included a participatory approach through initial condition observation, socialization of the benefits of recordkeeping, training in the use of simple bookkeeping formats, digital content training, and outcome evaluation. The results demonstrated a significant improvement in the regularity of daily transaction recording, administrative skills, and the establishment of a more systematic financial management pattern. In the marketing aspect, activation of the business’s Instagram account contributed to expanded service information outreach, increased customer interest, and a shift in the business owner's perspective regarding the importance of digital media. These findings affirm that hands-on mentoring is effective in improving financial and digital literacy among MSMEs and in encouraging sustainable changes in business behavior.

The development of the laundry business requires an effective visual communication strategy to build brand image and competitiveness. This study aims to design a visual branding strategy for Titu Binatu, a laundry UMKM in Tembalang, Semarang. Through a visual communication design approach, this study analyzes visual identity elements such as logos, colors, typography, and promotional media in shaping consumer perceptions. The method used is qualitative through observation, interviews, and literature studies. The results show that Titu Binatu needs a strong visual identity and appropriate promotion to reach the market, especially students and workers. Strengthening branding with offline and online media is needed so that visual branding becomes a strategic tool in business development in the digital era.     

Ironing activities in the laundry service industry are performed repeatedly and for long periods, creating a high potential for non-ergonomic work postures. At Laundry Cio’ta, ironing is carried out every day from 08:00 to 21:00 by two workers, which increases the risk of fatigue and musculoskeletal disorders due to continuous and repetitive movements. This study aims to analyze workers’ ironing postures using the REBA method to determine the level of ergonomic risk. Data were collected through direct observation and measurement of body posture angles during the ironing process. The assessment results showed a Score A of 4 and a Score B of 2, producing an initial REBA score of 4. With the addition of an activity score of +1, considering the repetitive nature of the task, the final REBA score increased to 5. This score indicates a moderate level of risk, suggesting that corrective actions are necessary to prevent long-term strain or injury. Based on these findings, ergonomic improvements such as adjusting the ironing table height, modifying the work layout, and encouraging workers to adopt better posture are recommended. Implementing short rest breaks and task variation can also help reduce physical strain and improve worker comfort and productivity.

The application of food hygiene and sanitation principles is an important aspect in ensuring the quality of nutritional services in hospitals. Low compliance of kitchen staff in maintaining hygiene is often caused by a lack of supervision, motivation, and limited supporting facilities. This study aims to determine the effect of education on compliance with the application of food hygiene and sanitation and its contributing factors in the Nutrition Installation of Hospital X through an internship activity conducted in July–October 2025. The research method used a quasi-experimental model with a one-group pretest-posttest and a mixed methods approach. The research subjects were seven kitchen staff, with two of them being interviewed in depth via voice recording. Data collection was carried out through initial observations, compliance checklists, and recorded interviews at the pretest and posttest stages. Educational interventions were carried out through counseling, routine briefings, and mentoring in the six-step handwashing practice according to WHO guidelines. Data analysis was carried out using descriptive quantitative and thematic qualitative methods. The results showed an increase in staff compliance after being given education, seen from changes in behavior in washing hands properly, using personal protective equipment, and maintaining cleanliness of the work area. Based on pretest interview results, low compliance was caused by a lack of supervision due to the lack of accreditation, infrequent monitoring, the misperception that visibly clean hands were safe enough, and limited water supply due to the shared drain with the hospital laundry. Following the educational intervention, posttest results showed improved compliance compared to baseline.

This study aims to evaluate improvements in customer service quality with the goal of increasing customer satisfaction at Ratu D'Laundry. The approach used is quantitative with a descriptive methodology, where data is collected through a survey that measures five main aspects, namely service quality, process speed, price and promotions, customer service, and overall satisfaction and loyalty levels. The results of this study indicate that most customers are satisfied with the services provided, especially in terms of laundry cleanliness, clothing fragrance, and the friendly attitude of staff in providing services. These results show that these factors play an important role in shaping customers' positive perceptions of service quality. However, this study also found several complaints related to service completion time, which is considered to still need improvement. Overall, this study confirms previous findings that service quality has a significant impact on customer satisfaction. The proposed strategy to improve service completion time is a key step in building trust, meeting consumer expectations, and encouraging long-term customer loyalty.

This study aims to analyze the effect of price, promotion, and location on customer satisfaction at The Daily Wash Laundry Kediri. This research employs a quantitative associative approach to examine the causal relationship among variables. The sample consists of 170 respondents selected through purposive sampling. Data were collected using a five-point Likert scale questionnaire and analyzed through validity and reliability testing, classical assumption tests, and multiple linear regression analysis using SPSS version 26. The results show that price, promotion, and location each have a positive and significant effect on customer satisfaction. Simultaneously, the three variables significantly influence customer satisfaction with a determination coefficient value of 0.908, indicating that 90.8% of customer satisfaction variation can be explained by these variables. These findings indicate that a combination of appropriate pricing, effective promotion, and strategic location significantly enhances customer satisfaction in the modern laundry service industry.

This study aims to determine the influence of local Bugis cultural values specifically Lempu (honesty and integrity), Temmappasilaingeng (impartial justice), and service quality on customer loyalty through satisfaction in laundry businesses in Watampone. A quantitative approach was employed using Partial Least Square Structural Equation Modeling (PLS-SEM) through SmartPLS 4, involving 120 respondents from three major sub-districts in Bone Regency. The results reveal that Lempu culture does not have a significant effect on customer satisfaction (T = 1.498; p = 0.137) or loyalty (T = 0.542; p = 0.589). Similarly, Temmappasilaingeng does not significantly influence satisfaction (T = 0.746; p = 0.457) or loyalty (T = 1.347; p = 0.180). Service quality, however, significantly affects customer satisfaction (T = 4.984; p = 0.000), but does not directly influence loyalty (T = 0.915; p = 0.362). Meanwhile, customer satisfaction significantly impacts loyalty (T = 2.760; p = 0.007). Mediation analysis also shows that customer satisfaction significantly mediates the relationship between service quality and loyalty (T = 2.437; p = 0.016), but not between Lempu (T = 1.318; p = 0.190) or Temmappasilaingeng (T = 0.702; p = 0.484) and loyalty. In conclusion, customer satisfaction is a key factor in building loyalty, and service quality is the dominant factor driving that satisfaction. Although local culture holds essential moral values, its influence on loyalty needs to be realized in the form of tangible service experiences to be directly felt by customers.

Study Interest State Administrative Law, Implementation of Business Licensing for Laundry Services Activities in Barong Tongkok District, West Kutai Regency, under the guidance of Dr. Siti Kotijah S.H., M.H and Agustina Wati S.H., M.H. Business licensing is an important aspect in the implementation of business activities, including laundry service businesses that are increasingly growing in urban communities. Laundry businesses require official permits from the local government as a form of compliance with regulations governing economic activities and environmental protection. With licensing, the government can supervise business activities and ensure that business actors comply with operational standards, including in the management of domestic waste generated from the washing process. Laundry business licensing is also an instrument to ensure consumer safety and comfort. Business permits include technical and administrative requirements, such as location permits, environmental permits (UKL-UPL/SPPL), and operational permits from related agencies such as the Investment and One-Stop Integrated Services Agency (DPMPTSP). Without complete permits, business actors can be subject to administrative sanctions to criminal penalties, as regulated in various laws and regulations such as Law Number 32 of 2009 concerning Environmental Protection and Management. Research on laundry business permits is important to provide a comprehensive picture of the processes, obstacles, and legal and environmental implications that may arise if business actors do not comply with applicable licensing provisions. Social legal research, with field studies at the Investment and One-Stop Integrated Service Office of West Kutai Regency, Barong Tongkok District and Laundry businesses in Barong Tongkok, West Kutai. Laundry businesses that have permits are 7, while there are still many laundry businesses that do not have laundry business permits. Business actors do not have business permits, because the reason is that their business is small, and the permit process is very difficult, and business actors avoid paying local taxes.

This community service activity was carried out at Laundry A2 Palembang City with the aim of improving the financial literacy of micro business actors through simple financial bookkeeping assistance. Many micro business actors experience difficulties in recording financial transactions systematically, which has an impact on their inability to evaluate the financial condition of the business accurately. Through a participatory approach and direct training at the place of business, this activity focuses on the importance of recording daily income and expenses, as well as the preparation of monthly income statements. The results of the mentoring show that the owners and employees of A2 Laundry are starting to be able to implement a structured daily bookkeeping system. In addition, the increase in understanding of financial management can be seen from the post-test results, which increased by up to 70% compared to the pre-test. A2 Laundry now has a simple income statement that can be used as a basis for business decision-making. The success of this activity shows that a simple bookkeeping model that is tailored to business needs can be implemented effectively by MSME actors. In the future, similar approaches can be replicated in other micro-enterprises to strengthen the financial foundations of local businesses.

This research aims to formulate a business development strategy for AK Laundry, a micro, small, and medium enterprise (MSME) located in Palembang that operates in the laundry service industry. As competition in this sector continues to intensify, MSMEs are required to adapt quickly through effective strategic planning. The study employed a descriptive qualitative approach, with data collected through interviews, direct observations, documentation, and questionnaires, ensuring a holistic understanding of both internal and external conditions. The analysis was carried out using the SWOT framework, which identifies internal strengths and weaknesses, as well as external opportunities and threats. The findings reveal that AK Laundry possesses several strengths, including good relationships with its loyal customer base, competitive pricing that appeals to a wide range of market segments, and a strategic location that facilitates accessibility. However, weaknesses were also identified, such as limited promotional efforts, particularly in digital channels, and occasional delays in completing customer orders, which may affect satisfaction and trust. From an external perspective, AK Laundry has opportunities to expand its services, particularly through the growing demand for pickup and delivery facilities, as well as changes in consumer lifestyles that increasingly prioritize practicality and efficiency. Nevertheless, the enterprise must also address potential threats, such as intense competition in pricing strategies among similar businesses and the risk of item loss, which could undermine its reputation. Based on the SWOT matrix, AK Laundry is positioned in Quadrant I, indicating that it holds considerable potential for aggressive growth. Therefore, the recommended strategies include strengthening digital marketing initiatives, introducing innovative services to differentiate from competitors, enhancing employee competencies through training programs, and upgrading equipment to improve service quality and speed. These strategies are expected to help AK Laundry leverage its strengths and opportunities effectively, ensuring sustainable development and competitiveness in the MSME laundry service sector.

This study examines a comprehensive approach to addressing common issues in laundry services, such as ineffective scheduling, skills gaps, and operational inefficiencies. The research focuses on RPK Omah Laundry Prapen, aiming to improve work processes and optimize human resources in this laundry business. The proposed solutions include the implementation of an attendance system, financial application training, laundry and ironing skills training, and a single-shift work system. The attendance system is designed to improve workforce punctuality, while the financial application training aims to enhance employees' understanding of financial management. Additionally, providing specific training on laundry and ironing techniques helps to bridge the skills gap and ensure high-quality service. The introduction of a single-shift work system aims to increase efficiency by streamlining operations and reducing staff fatigue. The results of the study indicate that these proposed solutions lead to several positive outcomes. The attendance system contributes to better time management, fostering a sense of responsibility among employees. Financial application training helps staff manage the business's finances more effectively, leading to more informed decision-making. Furthermore, the skills training program has shown improvements in the quality of laundry and ironing services, which directly impacts customer satisfaction and retention. The adoption of a single-shift work system reduces operational costs and increases the overall efficiency of the laundry services. Ultimately, this approach enhances fairness, operational efficiency, and productivity, creating a more conducive work environment. Implementing these integrated solutions can help laundries, such as RPK Omah Laundry Prapen, achieve better, sustainable performance by addressing key operational challenges and maximizing their workforce's potential. This study provides valuable insights for other laundries looking to optimize their operations and improve long-term business success.

Micro, Small, and Medium Enterprises (MSMEs) play a crucial role in economic development, one of which is through the rapidly growing laundry service sector in Padang City. Roemah Laundry, as an MSME player in the laundry service sector, faces challenges in maintaining service quality and customer loyalty amidst intense competition. This study aims to examine the application of quality management, risk management, and pricing strategies implemented by Roemah Laundry to increase customer satisfaction and loyalty. The methods used include evaluating operational processes, quality control, employee training, as well as analyzing pricing strategies and risk management. The results of this study are expected to provide practical recommendations for Roemah Laundry to improve business effectiveness and serve as a reference for other MSME players in facing competition in the laundry service sector. Additionally, this study contributes to the development of MSME management science, particularly in improving service quality and sustainable business strategies.  

The laundry business is rapidly growing in urban society, especially in areas with a high activity rate. One of the main challenges is the manual transaction recording process, which causes inefficiency and potential errors. This research aims to design and develop a web-based cashier system for Laundry Indimo Azza using the Prototype method. The system is designed to support customer data recording, automatic service fee calculation, service and employee management, and structured transaction and financial reporting. The Prototype method was chosen due to its ability to adapt to user needs through design and evaluation iterations. Testing results using white box and black box methods show that the system works according to expectations, increasing operational efficiency and speeding up customer service.

Digital transformation brings significant changes in the way micro, small, and medium enterprises (MSMEs) carry out marketing strategies. However, many laundry business owners in rural areas, such as in Ngimbangan Village, have not optimally utilized digital marketing to improve competitiveness. This community service activity aims to increase the digital capacity of laundry business owners through digital marketing training, in order to increase business visibility and expand market reach. This activity adopts a Participatory Action Research (PAR) approach, which involves collaboration between researchers and community members at every stage of the research process, from planning to implementation and evaluation. The implementation method includes counseling, practical training, and mentoring on the use of social media, creation of promotional content, and utilization of digital platforms. The digital marketing training activities held to increase the turnover of MSMEs digital marketing training for laundry business owners to increase visibility and expand market reach in the digital era in Ngimbangan Village, Mojosari District, Mojokerto Regency, went smoothly according to the plan that had been set. The results of the activity showed an increase in participants' understanding and skills in implementing digital marketing strategies. In addition, some participants began to actively promote their businesses through social media. This activity proves that digital marketing training can be an effective means of local economic empowerment in facing the challenges of the digital era.

Community Service Lecture (KKN) is a program held by the campus to serve the community by students with the aim of helping the local community to solve problems in the village. The socialization activities were carried out in Mojowiryo village, Kemlagi sub-district. The activity aims to foster a sense of enthusiasm for cleaning small things, especially taking care of shoes. This socialization is also intended for young people to open business opportunities to reduce unemployment in the village with a shoe laundry business. In the implementation of these activities carried out by means of questions and answers and presentations by the KKN team. The results obtained from these activities are that the community can find out how to take care of their shoes properly and correctly with makeshift tools to make a profitable business field.

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

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