Publication Search

Rapid urban growth is often linked to the narrative of sustainable development, yet the reality is that fundamental issues remain in the management of urban waste. This paper aims to examine the gap between the concept of a sustainable city and sub-optimal waste management practices. Through a normative legal approach involving an analysis of legislation and relevant literature, it has been found that the implementation of waste management policies continues to face various challenges, such as weak law enforcement, a lack of policy integration, and low levels of public participation. On the other hand, the use of the label ‘sustainable city’ tends to be symbolic and does not yet reflect comprehensive practices. This paper positions the issue of waste as a key indicator in assessing urban sustainability. The novelty of this study lies in its critical approach, which links the discourse on sustainability with the contextual realities of waste management, thereby offering a more reflective and distinct perspective from previous studies.

Food waste is an important indicator in evaluating the effectiveness of food service management, especially in institutional settings such as Islamic boarding schools. High levels of food waste can be influenced by several factors, including food taste and satisfaction with food service. This study aimed to analyze the relationship between food taste and food service satisfaction with food waste among students at Al-Hasyimi Islamic Boarding School Sukolilo Bancar. This research used a quantitative method with a cross-sectional design. The population consisted of 127 female students, with 98 respondents selected using stratified random sampling. Data were collected using the Comstock form to measure food waste and questionnaires to assess food taste and food service satisfaction. Data analysis was conducted using univariate and bivariate analysis with the Spearman Correlation test. The results showed a significant relationship between food taste and food waste (p=0.000), as well as between food service satisfaction and food waste (p=0.000).

Industrial waste management is an essential part of environmental protection and management efforts in Indonesia. Industrial development contributes positively to economic growth, but it also creates risks of environmental pollution when waste is not managed properly and in accordance with legal regulations. This study aims to analyze legal regulations concerning industrial waste management in Indonesia, evaluate the compliance level of PT Selatan Jadi Jaya with applicable laws and regulations, and examine law enforcement efforts and accountability mechanisms for violations affecting the environment. The research applies an empirical normative method using statutory and field approaches. Data were collected through literature studies of legislation, scientific journals, and legal doctrines, supported by observations and interviews with related parties. The findings show that industrial waste management has been comprehensively regulated under Law Number 32 of 2009 and Government Regulation Number 22 of 2021. However, implementation still encounters obstacles such as weak supervision, limited legal awareness among business actors, and economic considerations affecting corporate compliance. PT Selatan Jadi Jaya has fulfilled several administrative obligations but still requires improvement in substantive waste management practices. Effective supervision, consistent law enforcement, and stronger corporate commitment to sustainability and environmental responsibility are therefore necessary to achieve optimal environmental protection.

Kemuning Lor Village, Jember Regency, has significant potential in the agricultural and livestock sectors; however, the utilization of agricultural, livestock, and household waste remains suboptimal. Waste such as rice straw, animal manure, and household refuse is generally not processed effectively, leading to environmental pollution and the loss of potential economic value.

The waste problem in Indonesia has now reached a critical stage and has become an increasingly serious environmental issue. The ever-increasing volume of waste is not being managed effectively, leading to various negative impacts, particularly environmental pollution. This study aims to examine the state of waste management in Indonesia and its impact on water pollution from the perspective of the Sustainable Development Goals (SDGs). The method used is descriptive qualitative research through a literature review utilizing various sources such as journals, official reports, and legislation. The results indicate that the majority of waste originates from household activities, while management practices remain rudimentary, such as the “collect-transport-dispose” method and open dumping. This situation leads to waste accumulation, which contributes to water pollution, deteriorating environmental quality, and increased health risks for the community. Furthermore, suboptimal waste management also poses a challenge in achieving sustainable development goals, particularly regarding responsible consumption and access to clean water and sanitation. Therefore, improved efforts are needed through the application of the reduce, reuse, recycle (3R) principles, increased public awareness, and the active role of the government and the private sector in providing a sustainable waste management system. With the right measures, it is hoped that the waste problem in Indonesia can be reduced and the environment preserved.

The rapid advancement of information technology has reshaped modern society, in particular influencing how young individuals express their identities through fashion. The choice of clothing goes beyond mere practical functions, becoming a symbol of social status and values as young people attempt to adapt to rapidly changing trends, driven largely by digital platforms such as social media. These phenomena have simultaneously led to alarming waste production and environmental degradation, reflecting the mismatch between modern lifestyles and theological mandates on the management of creation. The fast-paced fashion industry, characterized by rapid production cycles and high consumerism, exacerbates the ecological crisis by generating large amounts of textile waste and contributing to detrimental practices in global supply chains. The study uses a qualitative approach, emphasizing literature research to analyze relevant literature and synthesize findings into meaningful discourse. Ultimately, it advocates a transformative catechesis that integrates ecological awareness into the formation of young people's faith, leveraging digital spaces to advocate for simplicity and community engagement in sustainable practices. The challenges faced in fostering this ecological awareness include the prevalence of a culture of instant gratification and the gap between knowledge and action, which hinders the alignment of belief with action. Theological reflection further emphasizes the spiritual implications of consumer behavior, placing ecological responsibility as a fundamental aspect of authentic expression of faith. Based on these insights, this paper underscores the importance for the Church to be proactively involved in the fight for ecological preservation, recognizing that true faith is manifested through tangible actions that honor the divine creation.

The use of synthetic pesticides in the agricultural sector remains the primary choice for farmers in Indonesia due to their high effectiveness, but their massive use has negative impacts on human health and the environment. Therefore, there is a need for environmentally friendly and sustainable pesticide innovations. Red onion peel waste with the addition of TiO₂ nanotechnology is a strategic development step as a solution to the dangers of synthetic pesticides. Red onion peel contains bioactive compounds such as acetogenin, squamocin, gibberellin, cytokinin, and abscisic acid, which have the potential to be natural pest control agents. The process of making organic pesticides is carried out through the maceration of onion skins, followed by the addition of TiO₂ nanoparticles that act as photocatalytic catalysts to increase pesticide effectiveness and degrade synthetic pesticide residues. The development of these organic pesticides is in line with the principles of Green Chemistry, particularly designing safer chemicals, catalysis, design for degradation, and real-time pollution prevention. Through the implementation of strategic steps such as research, testing, socialization, and continuous evaluation, TiO₂ nanotechnology-based organic red onion peel pesticides have the potential to become a safe, effective, and environmentally friendly alternative in supporting sustainable agriculture in Indonesia.

The use of building materials plays a crucial role in determining the quality of the built environment, particularly in the context of row housing in densely populated urban areas. This study aims to evaluate the types of materials used in the construction of row housing in Cemara Asri, Medan, with a focus on sustainability and environmental friendliness criteria. The methods employed include direct site surveys and literature studies related to the characteristics of both interior and exterior materials applied to housing units. The research findings indicate that most of the materials used—such as red bricks, ceramic tiles, clay roof tiles, and concrete ventilation blocks—possess good energy efficiency and durability potential. However, they do not fully meet sustainability standards in terms of production processes and waste management. The study also found that residents' awareness of environmentally friendly material selection remains limited, and the procurement of materials tends to follow local availability and economic considerations. These findings are expected to serve as a foundation for improving environmentally friendly material planning in row housing developments in other urban areas.

Public facility cleanliness is a reflection of cultural values and collective social responsibility. Bus stops, as daily transit points for thousands of commuters, often face declining cleanliness due to limited user participation and management. This community service program was conducted on April 22, 2026, at RSAL Bus Stop, Surabaya, Indonesia, with one researcher as the sole implementer. The objectives were to improve physical cleanliness, provide environmental education, and enhance aesthetics through greening. The method consisted of three activities: installing cleanliness reminder posters, cleaning the bus stop area, and adding ornamental plants in flower pots. Evaluation employed qualitative descriptive techniques, including observation, photographic documentation, and informal interviews. Findings revealed that the bus stop floor, initially littered with plastic waste, cigarette butts, and dry leaves, became clean after sweeping. Posters were successfully placed in visible positions, and three flower pots containing Sansevieria trifasciata and Epipremnum aureum created a fresher atmosphere. Users responded positively, noting improved comfort and cleanliness. The synthesis indicates that simple interventions by a single individual can generate meaningful improvements when combining physical cleaning, visual education, and greening. This initiative demonstrates that small-scale university-led social responsibility programs can serve as replicable models for sustainable public facility management.

Food waste is a global issue that has a major impact on the economy, environment, and food security. The high rate of food waste is directly influenced by food waste behavior. Also, food waste behavior does not just appear, but it is supported by other factors such as food waste knowledge and food preferences. As an effort to prevent the increase in food waste, it is important to know the relationship between these two factors and the occurrence of food waste behavior. The method used is a literature review of open access scientific articles with English language used and published in the period 2015–2025 through the Google Scholar databases. The results of the review show that most studies found a significant relationship between food waste knowledge and food preferences with food waste behavior. However, some studies also showed inconsistent results. Although many studies support the relationship between food waste knowledge and food preferences with food waste behavior, the difference in results also indicates that there are still other factors that are strongly related to food waste behavior, so more comprehensive efforts are needed to reduce the occurrence of food waste behavior.

This study aims to analyze the development of studies on the use of biomass as a renewable energy source to support national energy security using a bibliometric approach. Research data were obtained from the Scopus, Web of Science, and Google Scholar databases with a publication range of 2015-2025. The analysis was conducted using VOSviewer and Biblioshiny. The results show a significant increase in publication trends in the last decade, especially in the period 2016-2024, reflecting the increasing academic attention to biomass as a solution in the energy transition. Keyword visualization shows that biomass is closely related to concepts such as combustion, thermal efficiency, calorific value, and pelletizing. China is the country with the highest publication contribution, while Indonesia is strategically positioned due to its abundant biomass waste potential. Overall, biomass has great potential to support energy diversification, reduce dependence on fossil fuels, and strengthen national energy security in a sustainable manner.

This study aims to analyze the integration of policy, curriculum, and school culture in realizing an environmentally friendly school at SDN Tanggul Wetan 2. The study used a qualitative approach with a case study type. The research subjects included the principal, teachers, students, program coordinators, and parents. Data collection techniques were carried out through observation, in-depth interviews, and documentation. Data analysis used the Miles and Huberman model which includes data reduction, data presentation, and drawing conclusions. The results showed that the school policy has integrated environmental care values ​​through the Adiwiyata program supported by external partnerships and periodic evaluations. The curriculum implementation was carried out contextually by integrating environmental materials into various subjects and using project-based learning methods. School culture is realized through habituation of activities such as community service, waste sorting, and energy saving which have an impact on changes in student behavior. Supporting factors include the principal's leadership, teacher participation, parental support, and the school environment, while inhibiting factors include the lack of consistent student habits. Thus, the integration of policy, curriculum, and school culture has proven to be key in building a sustainable environmentally friendly character.

The rapid development of the fashion industry has led to increasing environmental problems due to textile waste and the use of environmentally unfriendly materials. This study aims to analyze the potential innovation of kur rope bags as an environmentally friendly fashion product with high economic value. The research method used is a descriptive qualitative method through observation, literature study, and documentation of the kur rope bag manufacturing process. The results show that kur rope has strong, durable, and flexible characteristics, making it suitable for use as a basic bag material. Innovation in design and weaving techniques can increase the aesthetic value and marketability of the product. In addition, kur rope bags have the potential to become a promising business opportunity and support the empowerment of the community's creative economy. With growing awareness of sustainability, kur rope bags can become an alternative fashion product that not only reduces environmental impact but also creates new market opportunities. Therefore, the development of this product is expected to contribute positively to reducing textile waste and strengthening the local economy through the creative industry.

The problem of urban flooding is a growing issue due to high population density, increasing volumes of plastic waste, and the reduction of water absorption areas. The use of conventional paving blocks, which are impermeable, further exacerbates flooding conditions because they do not allow water to infiltrate into the soil. This study aims to develop an innovative plastic waste-based paving block incorporating rice straw and sugarcane bagasse, along with the integration of phytoremediation concepts as a solution for urban flood mitigation. The method employed was an experimental approach involving the following stages: material preparation, plastic incineration, material mixing, molding, and testing of water absorption capacity and compressive strength. The results showed that paving blocks with a combination of plastic waste, rice straw, and sugarcane bagasse had the highest water absorption rate of 34% and compressive strength of 21 kg/cm², meeting SNI standards. The addition of natural materials containing silica was proven to enhance the material’s porosity and strength. Additionally, the application of phytoremediation using water hyacinth has the potential to improve the quality of water seeping into the soil. Thus, this phytoremediation-based paving block innovation can serve as an effective alternative solution to reduce flood risks while supporting sustainable waste management and environmental stewardship.

Self-Compacting Concrete (SCC) requires a high cement content, which contributes to increased carbon emissions; therefore, this study evaluates the effect of partial cement substitution with fly ash (5%, 10%, and 15%) and the addition of Polyethylene Terephthalate (PET) waste (0.5% and 0.7%) on the mechanical properties of SCC with a target strength of f’c 30 MPa. The research employed laboratory experimental methods, including fresh concrete tests (slump flow, L-box, and V-funnel) and hardened concrete tests (compressive, tensile, and flexural strength) at 7 and 28 days. The results indicate that fly ash substitution enhances compressive strength, with the highest value of 49.59 MPa achieved at 5% fly ash at 28 days, exceeding normal concrete (34.73 MPa). The addition of PET tends to reduce compressive strength due to increased porosity; however, it significantly improves flexural strength, as the combination of 5% fly ash and 0.5% PET achieved 4.7 MPa compared to 2.9 MPa for normal concrete. Overall, the combination of fly ash and PET waste shows potential for application in structural elements requiring high flexural performance.

Urban waste management has become a complex challenge due to population growth, urbanization, and economic activities contributing to higher waste generation. Effective waste management systems are required to reduce waste disposed at final disposal sites. This study aims to evaluate the effectiveness of waste management at the TPS 3R Pedalangan Bersinar facility in Semarang City by examining waste separation from the source. The research applied a quantitative approach using mass balance analysis to assess the balance between incoming waste, processed waste, and residual waste in the system. Primary data were collected through field observations, interviews, and operational monitoring for six consecutive days, while secondary data were obtained from the Semarang Environmental Agency. Results show community-based waste banks in Pedalangan demonstrate a high level of effectiveness with a recovery factor reaching 100%, indicating optimal recycling performance and strong community participation. Meanwhile, the TPS 3R facility processes an average waste volume of 16.61 m³/day with reduction of 10.32 m³/day and residual waste of 6.29 m³/day, resulting in a recovery factor of approximately 0.62 categorized as moderate effectiveness. Therefore, strengthening household waste separation, improving operational management, and increasing community participation are recommended to enhance waste reduction and support sustainable urban waste management systems.

Prolonged outpatient waiting time remains a major challenge in public hospitals and reflects inefficiencies in service process management. Internal medicine clinics are characterised by high service complexity and patient volume, making them particularly vulnerable to process waste that contributes to extended waiting times. Objective: This study aimed to develop an outpatient service flow model based on the Lean Hospital approach to reduce waiting time in the internal medicine clinic of RSUD Balaraja. Methods: A qualitative case study design was employed. Data were collected through direct observation of outpatient service processes, document review, and Focus Group Discussions (FGD) with relevant stakeholders. Process analysis was conducted using Value Stream Mapping (VSM) to identify value-added and non–value-added activities, while Fishbone Diagram analysis was applied to explore the root causes of process inefficiencies. All findings were integrated to develop a future-state outpatient service flow model. Results: The findings indicate that prolonged outpatient waiting time is primarily influenced by inefficient service flow design, repetitive administrative processes, and weak coordination among service units. The proposed service flow model demonstrates a more streamlined, integrated, and patient-centred process, with potential reductions in waiting time through systematic waste elimination and process improvement. Conclusion: The Lean Hospital approach provides an effective framework for developing outpatient service flow models in public hospitals. The proposed model offers a practical basis for improving outpatient service efficiency in complex clinical settings such as internal medicine clinics.

Waste management remains a critical environmental issue due to the lack of public awareness in separating organic and inorganic waste, resulting in accumulation and environmental pollution This study aims to analyze and evaluate the development of automatic waste sorting systems based on proximity sensors with full-capacity notification using a Systematic Literature Review (SLR) approach.. The proposed system utilizes a combination of sensors, including proximity sensors for material identification and ultrasonic sensors for detecting object presence and bin capacity, integrated with a microcontroller for real-time processing. Additionally, the system is equipped with IoT-based monitoring that allows users to receive notifications when the waste bin reaches its capacity. The research method involves system design, hardware and software integration, and functional testing to evaluate system performance. The results indicate that the system is capable of sorting waste automatically with a high level of accuracy and responsiveness, while also providing real-time monitoring to support waste management operations. The implementation of this system can reduce manual intervention, increase operational efficiency, and promote better waste segregation practices. Furthermore, this study highlights the potential of integrating smart technology into environmental management systems, contributing both theoretically and practically to the development of sustainable waste management solutions.

The problem of household waste in Kalanganyar Village, Sedati District, Sidoarjo Regency, is increasing along with population growth, while residents' knowledge about waste sorting is still minimal and processing facilities are limited. This community service program aims to increase awareness and cleanliving behavior through education and mentoring on household waste processing based on the 3R concept (Reduce, Reuse, Recycle). This activity adopts an Asset-Based Community Development (ABCD) approach that focuses on mapping and utilizing local potential, such as health cadres, youth organizations, the spirit of mutual cooperation, and the availability of potential land. The implementation methods include appreciative inquiry, focus group discussions (FGDs), in-depth interviews with the Head of the Sopo Nyongko TPS and community leaders, participatory observation, and practical mentoring for housewives, youth organizations, and TPS managers on February 9. The results of the activity showed an increase in residents' understanding of PHBS and waste management, indicated by the enthusiasm of participants during the educational session. The program also successfully activated local agents of change: youth groups began implementing inorganic waste recycling, and health cadres designed a home-based waste sorting system.

Waste management is a major challenge in environmental conservation in Indonesia. One innovative approach that can be implemented is the use of informative waste signs as a visual educational medium for the public. Waste signs are information boards placed in strategic locations to provide knowledge about the types of waste, their environmental impacts, and the decomposition time of various materials. The Community Service Program (KKN) of Padang State University (UNP) has implemented this concept by creating educational boards containing information on waste decomposition time, ranging from waste that decomposes in 50–100 years to waste that does not decompose at all. This article aims to examine the concept, benefits, and effectiveness of waste signs as a community-based environmental education instrument. The methods used include field observation and a qualitative descriptive approach. The results of the study indicate that waste signs can increase public awareness of the importance of proper waste management. Thus, this medium has the potential to be a simple yet effective educational tool in supporting sustainable environmentally friendly behavior.