Waste Management System Research Articles

СТРАТЕГІЧНЕ УПРАВЛІННЯ ІНВЕСТИЦІЙНОЮ ДІЯЛЬНІСТЮ НА ПІДПРИЄМСТВАХ З ПЕРЕРОБКИ ТВЕРДИХ ПОБУТОВИХ ВІДХОДІВ

The article demonstrates that Ukraine faces significant challenges in the management of solid household waste. These issues include the absence of a clear waste disposal strategy and insufficient attention to environmental safety. Most landfills in Ukraine fail to meet safety standards and environmental norms, posing a threat to the surrounding environment. Effective resolution of these problems involves the implementation of advanced solid household waste processing technologies and the improvement of waste management systems to ensure sustainable resource utilization and reduce negative environmental impact. The prospects for the development of enterprises involved in solid household waste processing are discussed, including societal awareness of environmental pollution issues and the need for protection, legislative initiatives aimed at reducing waste volumes, and technological progress enabling the creation of new products from recycled waste while minimizing environmental impact. It is argued that the development of this sector can stimulate investments and contribute to the creation of new jobs in the environmental economy. It is argued that effective strategic management of investment activities in enterprises dealing with solid household waste processing is a crucial factor in their successful development and achieving competitive advantage in the market. It is demonstrated that based on the analysis of the enterprise’s needs and opportunities, an investment strategy should be developed to align with strategic goals and enhance its competitiveness. This strategy involves optimal resource utilization to ensure sustainable development and maximize financial results. The main stages of developing and implementing the investment management strategy in enterprises dealing with solid household waste processing include market and needs analysis, selection of investment directions, evaluation of investment projects, development of an investment plan, implementation of investment projects, monitoring and control, evaluation of results, and strategy adjustment. It is proposed that for maximum effectiveness, these stages of the strategy should be implemented comprehensively.

A novel parallel heuristic method to design a sustainable medical waste management system

Efficient management of waste generated in healthcare systems is crucial to minimize its environmental impact and ensure public health. Sustainable medical waste management (MWM) systems require careful network design, which can be achieved through efficient optimization techniques. This work develops a mixed-integer linear programming (MILP) to formulate the problem, a two-step MILP (TSMILP) to generate quality lower bounds, and a novel parallel heuristic algorithm to configure a sustainable waste management system including waste generation centers (WGCs), waste treatment centers (WTCs), waste recycling centers (WRCs), waste disposal centers (WDCs) and waste incineration centers (WICs). Such a hybrid methodology has not been yet offered in the literature wherein the aim is to address strategic (establishment of facilities), tactical (employment of transportation system), and operational decisions (transportation planning) optimally in large networks. As reflected in the literature, there is a huge gap in efficiency and application of combinatorial optimization, and parallel computing in sustainable MWM systems, where the suggested MILPs' solvers are not technically capable of discovering quality solutions in reasonable runtimes on large-sized instances. Thus, we suggest a novel heuristic equipped with parallel computing to share the complexity of the problem, with all the CPU cores to shorten runtime. Comparing the results generated by the parallel heuristic with those of the sequential heuristic, the MILP, and the TSMILP on three sets of benchmark instances using Nemenyi's post-hoc procedure for Friedman's test, it is inferred that the parallel heuristic is so effective in coping with the problem, and produces high-quality solutions, especially on the large-sized set. Finally, sensitivity analysis is adopted to analyze the effects of parameters on the objective values and provide useful managerial insights.

Assessment of waste management scenarios toward marine plastic debris mitigation and cost reduction

The increase in solid waste volume and change in composition due to urban development cause negative effects on the marine ecological environment. The aim of this study was to assess the amount of plastic waste leaking into the environment from the municipal solid waste (MSW) management system and propose mitigation measures towards sustainable development in Hue city, Viet Nam. The method of modelling MSW management system applying Material Flow Analysis (MFA) and simulating models through scenarios were used to propose strategic solutions to improve and develop the system. As a result, the implementation of segregation at source and improvement of the current collection system are urgently needed. Integrated treatment system including material recovery facility combined with transfer station, incineration, centralized and decentralized composting treatment can reduce the landfilled amount to 5% and the quantity of mismanaged plastic waste infiltrating the ocean has undergone a substantial reduction of several hundred-fold.

An Improved Strategy to Effectively Manage Healthcare Waste after COVID-19 in Republic of Korea

During the coronavirus disease 2019 (COVID-19) pandemic, 24,289 tons of infectious waste was generated in 2021 in Korea, a 320% increase compared to that generated in 2020 (5788 tons). The disposal of other healthcare waste has been delayed because COVID-19 infectious waste must be disposed of first, leading to long-term concerns related to the lack of healthcare waste disposal capacity. To solve this problem, this study investigated healthcare waste classification systems in Korea and overseas. We analyzed the current state of healthcare waste in Korea and compared the treatment methods and healthcare waste treatment systems by country. The results showed that Korea has a strict healthcare waste management system compared to other countries, which relies on dedicated incinerators and transport. It is difficult to expand incinerators exclusively for healthcare waste due to site selection issues because they incinerate infectious waste. Therefore, to solve the healthcare waste disposal problem, Korea should improve its management system to reduce treatment amounts. This study suggests that general healthcare waste that is considered less infectious should be excluded from healthcare waste-exclusive treatment and that sterilization/grinding as an intermediate treatment method should be allowed.

Pemberdayaan Ekonomi Masyarakat Di Kelompok Madu Langkapura: Implementasi Bank Sampah

Waste is a troubling problem in many countries, including Indonesia, with its impact that extends to various aspects of life. The amount of waste continues to increase along with changes in people's consumption behavior. In this context, the implementation of waste banks emerges as a solution for managing waste and empowering the community's economy. Community economic empowerment is an effort to strengthen and improve their economic potential. A waste bank is a waste management system that facilitates the collection, sorting, and sale of waste with the aim of reducing waste and providing economic benefits to the community. The research used a field research approach with qualitative methods. Data were obtained through interviews, observations, and related documents. Data analysis is descriptive and interpretative. The implementation of the Waste Bank in the Langkapura Honey Group increases community awareness about waste management, empowers the economy, and improves financial literacy. The Waste Bank is not only a place for collecting waste but also an education and empowerment center. The implementation of the Waste Bank in the Langkapura Honey Group succeeded in changing the community's view of waste into an economic source and providing financial benefits. Active education about waste and financial literacy are the keys to success. Suggestions include increased socialization, operational efficiency, collaboration, periodic evaluation, and further research.

Eco-management of end-of-life tires: Advances and challenges for the Ecuadorian case.

The aim of this research is to analyse the performance of the extended producer responsibility model for the management of end-of-life tires (ELTs) in Ecuador that has been implemented since 2013. For this research, we conducted case studies of, and subsequently, a comparative analysis between, the ELT management system in Ecuador with respect to the ELT management models in Colombia and Brazil. Our findings show that although the programme implementation represented a significant advance in Ecuador's waste management system there are important challenges that should be considered in future adaptations of the programme. Among the measures that can be adopted to improve the ELT management system are the consolidation and stimulation of the market for products made from ELT waste; promotion of other productive sectors linked to the creation of new products and sectors that generate complementary products; enhancement of the generation, socialization and access to knowledge of the waste by-products for micro-, small- and medium-sized enterprises; increase the tire consumer fee, known as 'Ecovalor' and improvement of the quality and availability of information and indicators regarding ELT management. In this sense, the experiences of Colombia and Brazil show important lessons for the Ecuadorian case.

The Growing Problem of Textile Waste Generation—The Current State of Textile Waste Management

The textile industry is global, and most brands export their products to many different markets with different infrastructures, logistics, and regulations. A textile waste recovery system that works in one country may fail in another. European Union legislation (Directive (EU) 2018/851) mandates that post-consumer textile waste must be separately collected in all associated countries. This directive has also stated that, in January 2025, the rate of textile waste recycling in Europe should be increased. Local governments will be under pressure to improve the collection, sorting, and recycling of textiles. Supporting local governments could be part of a more long-term approach to managing high-value textile waste by implementing Extended Producer Responsibility, which would increase the recycling rate of textile companies. This would enable reuse of over 60% of recovered clothes, recycling into fibers of 35%, and only throwing away 5%. Today, most textile waste (85%) is disposed of as solid waste and must be disposed of through municipal or local waste management systems that either landfill or incinerate the waste. To increase reuse and recycling efficiency, textile waste should be collected and sorted according to the relevant input requirements. The dominant form of textile waste sorting is manual sorting. Sorting centers could be a future solution for intensifying the recycling of textile waste. Advances in textile waste management will require digitization processes, which will facilitate the collection, sorting, and recycling of textiles. It is very important that digitization will help to guide used products to recycling and encourage manufacturers to participate in the use and collection of product data. Currently, both the digitization of textile waste management and fiber recycling technologies are at the level of laboratory research and have not been implemented. The aim of this publication is to analyze the state of textile waste management, especially the various forms of recycling that involve a local governments and the textile industry.

Solid waste management practices and challenges in Besisahar municipality, Nepal.

This study is a comprehensive assessment of the waste management system in Besisahar municipality. Information and some data have been collected from the municipality of Besisahar, followed by interviews with municipal officials responsible for waste management, stakeholders, waste workers, and residents. A total of 230 households, 20 schools, 10 government and private offices, 10 financial institutions, 60 commercial hotels, restaurants, and shops, and 20 medical shops and healthcare institutions, were selected in this study by random sampling. An extensive field study was conducted within all municipal wards and at dump sites. The results indicated that 42.14% of solid waste was collected through door-to-door collection services, 5.87% was mismanaged in open public places, 11.21% was used as compost manure, and the rest was discarded on riverbanks, dug up, and burned. A large component of the characterization of household waste consisted of organic waste (68.03%), followed by paper/paper products (8.13%), agricultural waste (5.5%), plastic (5.21%), construction (3.81%), textile (2.72%), metals (0.54%), glass (1.01%), rubber (0.10%), electronic (0.05%), pharmaceutical (0.1%) and others (4.78%) in the Besishahar municipality. Solid waste generation was found to be at 197.604 g/capita/day, as revealed by cluster sampling in 230 households. Around 4.285 tons-solid waste/day were generated in urban areas, while 16.13 tons-solid waste/day was estimated for the whole municipality. An important correlation between the parameters of solid waste was found by statistical analysis. Currently, solid waste is dumped on riverbanks, open fields, and springs, creating environmental and health hazards. The findings of this study will be useful to Besisahar municipality and its stakeholders in forming policies that facilitate waste management practices in this region and promote sustainable waste management systems.

Enviro Edible: Satisfying Hunger, Minimizing Waste

"Enviro Edible" is an innovative food waste management system designed to address the escalating global challenge of food waste. This comprehensive solution integrates technology, community engagement, and sustainable practices to minimize food wastage at various stages of the supply chain. The system employs a multi-faceted approach, encompassing smart inventory management, consumer awareness campaigns, and collaborative efforts with local businesses and charities. Key components include a user-friendly website that empowers consumers to make informed purchasing decisions, reducing the likelihood of excess food in households. Additionally, the system incorporates data analytics for businesses to preventing overstocking and expirations. Real-time analytics enable businesses to identify potential issues and make informed decisions to prevent food spoilage, reduce waste, and improve overall supply chain efficiency. "Enviro Edible" fosters partnerships with local charities and food banks, enabling seamless redirection of surplus food from businesses to those in need. Through real-time tracking and analytics, the system not only minimizes food waste but also creates a positive impact on communities by addressing hunger and promoting sustainable consumption. This food waste management system envisions a future where technology and collective efforts converge to create a more sustainable and responsible approach to food consumption, reducing environmental impact and enhancing social welfare. Keywords: Food Waste Management, User-friendly website, Real- time, Supply chain efficiency, Minimize food waste.

Consumers' motives for engaging in second-hand clothing circulation in terms of sustainable consumption

An increase in the number of consumers engaging in second-hand clothing (in short, SHC) circulation is indicated as one of the main ways to balance the consumption of clothes. Therefore, the motives of consumers engaging in SHC circulation are an important issue that requires cyclical and in-depth research. This article aimed to examine consumers' motives for engaging in SHC circulation in the context of the implementation of sustainable clothing consumption in selected European countries. In order to accomplish the objective, 547 CAWI questionnaire interviews were conducted with consumers from five countries: Germany, Sweden, Slovenia, Lithuania and Poland. The main motives for engaging in SHC circulation indicated by respondents are directly - the ecological and altruistic motive - and indirectly - the economic motive - linked to the idea of sustainable consumption. At the same time, it should be noted that consumers are guided by several motives simultaneously, and despite pro-environmental declarations, in most cases, they are also guided by economic motives. The study results can be applied to improving waste management systems and, in particular, campaigns promoting SHC circulation.

An ideal plastic waste management system based on an enhanced MCDM technique

The Fermatean probabilistic hesitant fuzzy set (FPHFS) concept is a method that combines Fermatean fuzzy sets and PHFS to provide detailed MCDM problem solutions. The management of solid waste is facing challenges in disposing of environmentally harmful plastic products. The study primarily focuses on plastic waste from the packaging industry, as it is the primary contributor to overall waste generation. The packaging sector has proposed a concept for the recycling of waste at various levels. This study aims to assess the effectiveness of the hybrid analytic hierarchy process and the combinative distance-based assessment (AHP-CODAS) method FPHFS in determining the most suitable plastic waste collection system. The AHP analysis identified the most effective methods for collecting plastic waste for recycling, emphasizing successful segregation for efficient recycling. A deposit and refund system promotes waste collection and a circular economy by facilitating efficient waste management. The research offers valuable insights into selecting packaging waste collection (PWC) technology in uncertain environments and enhances decision-making methods in the field.

Integrated design of a sustainable waste management system with co-modal transportation network: A robust bi-level decision support system

Efficient waste management practices play a critical role in addressing the acute challenges of environmental protection, public health and resource conservation. A well-designed system guarantees that waste is efficiently collected, treated and disposed while minimizing negative impacts on ecosystems and human well-being. This work presents a robust bi-level decision support system to establish a sustainable waste management system using a co-modal transportation network to treat municipal solid waste timely and efficiently. Consequently, two integrated multi-objective mathematical models are developed to formulate the problem. Configuring the municipal solid waste network in the first level of the suggested decision support system, the transportation network is designed in the second level taking into account non-identical modes. The objectives are to minimize total cost and total emission in both levels, while maximization of total job creation is also addressed in the first level. Robust optimization method and weighted goal programming method are then utilized to accommodate the developed decision support system against uncertainty and multi-objectiveness, respectively. To validate the efficiency of these methods, they are assessed against possibilistic linear programming technique and Lp-metric approach with the help of simple additive weighting (SAW) method, respectively. Eventually, several numerical examples are generated based on the benchmarks given in the literature, which are then tackled using CPLEX solve to appraise the applicability and complexity of the developed methodology. The findings reveal the efficacy of the decision support system in terms of finding solutions in less than 448 s on average. Finally, sensitivity analyses are performed to draw out useful practical implications and decision aids.

Implementation Of Regulation Number 02 Of 2011 Concerning Waste Management In Bengkulu City

Other waste management issues stem from the lack of a professional waste management system planning. The waste management sector has not yet received priority compared to other sectors in urban development. This research utilizes a qualitative approach. In this study, to determine the implementation of the Bengkulu City Regional Regulation Number 02 of 2011 Regarding Waste Management in Bengkulu City based on the opinions expressed by Nugroho and the modified results between the Bengkulu City Regional Regulation Number 02 of 2011 Regarding Waste Management. Regarding the policy socialization aspect, it is noted that the socialization of regional regulations to the community is still uneven. Furthermore, for the socialization related to waste separation, similar responses were received. This is proven by organic waste still being seen in inorganic waste bins. In terms of planning, the provision of waste bins in public and social facilities is still unavailable in some facilities. Furthermore, regarding waste management financing, there are various tariff rates. For waste management conducted by LPM or third parties, the tariff is determined through mutual agreement. Meanwhile, waste management by the Department will be subject to agreed-upon fees. In terms of implementation, for supervision and oversight, researchers can conclude that the people of Bengkulu City feel the supervision being carried out. In terms of evaluation, the application of sanctions and criminal provisions received various responses. Some members of the community disagree with the rules, while others agree, in order to instill a deterrent effect and raise awareness to dispose of waste properly. Furthermore, waste management by LPM and the Department can be concluded to still not be fully operational, as evidenced by increasing piles of waste before the transportation process.

IMPLEMENTING AI-DRIVEN WASTE MANAGEMENT SYSTEMS IN UNDERSERVED COMMUNITIES IN THE USA

The integration of Artificial Intelligence (AI) technologies holds immense potential for revolutionizing waste management systems in underserved communities across the United States. This concept paper explores the feasibility, benefits, challenges, and implications of implementing AI-driven waste management systems in these communities. By leveraging AI capabilities such as predictive analytics, optimization algorithms, and IoT sensors, innovative solutions can be developed to enhance waste collection, recycling efficiency, and environmental sustainability. However, successful implementation requires careful consideration of socioeconomic factors, community engagement, privacy concerns, and infrastructure limitations. This paper aims to provide a comprehensive overview of the opportunities and considerations associated with deploying AI-driven waste management systems in underserved communities, ultimately striving to promote equitable access to efficient and sustainable waste management solutions. This concept paper provides a comprehensive framework for implementing AI-driven waste management systems in underserved communities in the USA. It examines various aspects including socioeconomic considerations, community engagement, privacy concerns, infrastructure requirements, policy frameworks, financing options, and sustainability measures. Through careful planning, collaboration, and innovation, AI technologies can be harnessed to address the unique challenges faced by underserved communities, ultimately leading to more efficient, equitable, and sustainable waste management practices.
 Keywords: AI, Community, Waste, USA.

A COLETA SELETIVA NA GESTÃO DE RESÍDUOS SÓLIDOS DO MUNICÍPIO DE OURO BRANCO-MG

The city of Ouro Branco, located in the State of Minas Gerais, stands out for being a pioneer in the region in the acquisition of a Municipal Basic Sanitation Plan (PLANSOB). This article aims to present the application of selective collection in the management of solid waste in the municipality, highlighting the advances and setbacks over the years and addressing the main challenges encountered by managers in obtaining positive results and the search for continuous improvement in the sector. Historical data from the National Sanitation Information System (SNIS) were used, in addition to information provided by the municipality's Environment Department and data collected by the Association of Collectors of Recyclable and Reusable Materials of Ouro Branco (ASCOB), with the aim of evaluating the performance achieved by the waste management system in force in the municipality. The main results indicate that, despite the growing investment in solid waste management, the municipality has presented a setback over the years. It was concluded that there is a need to establish new strategies to improve the selective collection system, prioritizing investment in the sector, in order to carry out maintenance and expansions in the existing process. Other possible benefits are associated with job creation and continuous improvement in the city's economy due to the reduction of materials sent to landfills.

SOLID WASTE MANAGEMENT

Solid waste management is a critical aspect of urban sustainability, encompassing the collection, transportation, treatment, and disposal of solid waste materials. Effective solid waste management practices are essential to minimize environmental pollution, conserve natural resources, and promote public health. This abstract explores various aspects of solid waste management, including waste reduction, recycling, composting, and landfill management, highlighting the importance of integrated waste management systems. The abstract also discusses the challenges and opportunities associated with solid waste management, such as the need for innovative technologies and policies to improve waste collection and treatment efficiency. It emphasizes the importance of public education and awareness campaigns to promote waste reduction and recycling practices. Overall, the abstract underscores the importance of sustainable solid waste management practices in creating cleaner, healthier, and more resilient communities. Keywords: 1. Solid and liquid waste management 2. Waste water 3. Reuse 4. Recycle.

Reuse of polymeric waste for the treatment of marine water polluted by diesel

Accidental diesel spills can occur in marine environments such as harbors, leading to adverse effects on the environmental compartment and humans. This study proposes the surgical mask as an affordable and sustainable adsorbent for the remediation of diesel–contaminated seawater to cope with the polymeric waste generated monthly in hospital facilities. This approach can also be helpful considering a possible future pandemic, alleviating the pressure on the waste management system by avoiding improper mask incineration and landfilling, as instead occurred during the previous COVID–19. Batch adsorption–desorption experiments revealed a complete diesel removal from seawater after 120 min with the intact laceless mask, which showed an adsorption capacity of up to 3.43 g/g. The adsorption curve was better predicted via Weber and Morris's kinetic (R2 = 0.876) and, in general, with Temkin isotherm (R2 = 0.965–0.996) probably due to the occurrence of chemisorption with intraparticle diffusion as one of the rates–determining steps. A hysteresis index of 0.23–0.36 was obtained from the desorption isotherms, suggesting that diesel adsorption onto surgical masks was faster than the desorption mechanism. Also, the effect of pH, ionic strength and temperature on diesel adsorption was examined. The results from the reusability tests indicated that the surgical mask can be regenerated for 5 consecutive cycles while decreasing the adsorption capacity by only approximately 11%.

China’s Urban Waste Resource Management Systems: A Case of the Yangtze River Basin

ABSTRACT Urban waste management is vital for environmental protection and sustainable development. Understanding the characteristics and innovative paths of waste management systems in the Yangtze River Delta urban cluster is of significant importance. Analyzing 285 policies implemented from 2003 to 2022, the research employs methods like stage evolution text quantification and network structure analysis to reveal distinct characteristics of policy evolution in urban waste management. The study identifies a four-stage pattern of policy development: policy pilot stage, policy implementation stage, policy regulation stage, and policy dissemination stage. The findings highlight an increasing diversification of policy initiators and improvements in multisector collaboration. The central government plays a pivotal role in guiding urban waste management, while local governments follow suit through demonstration, indicating a preference for individual local autonomy over horizontal joint management.

A fuzzy synthetic evaluation approach to assess the risks associated with municipal waste management: Implications for sustainability

The rapid growth of industry, urban areas, and populations has substantially increased waste production worldwide. The inadequacy of robust waste management systems and limited resources poses significant challenges for many emerging economies, including Bangladesh, resulting in environmental contamination. Despite numerous academic studies on sustainable waste management, there is a noticeable gap in the literature concerning identifying, evaluating, and modeling critical risks associated with adopting sustainable municipal waste management systems, particularly in emerging economies like Bangladesh. This study, therefore, aims to fill this gap by identifying, categorizing, and assessing the crucial risks in implementing sustainable municipal waste management systems. Through an extensive review of existing literature and validation with expert feedback, this study employs a fuzzy synthetic evaluation method-based framework to prioritize the identified risks. The study calculates the probability of occurrence and degree of impact values to provide decision-makers with insights into the severity of different risk categories, aiding in case-by-case attention. Scores assigned on a 1 to 5 scale range from 2.59 to 4.14 for the various risk categories. Notably, “Industrial challenges related” and “Community and infrastructure requirements related” emerge as the most significant risk categories among those analyzed. This study contributes to the existing literature by employing fuzzy synthetic evaluation, a methodology rarely used to determine critical risks in municipal waste management. Furthermore, it is poised to offer valuable insights to industrialists and waste management authorities, empowering them to develop responsive strategies and contribute to the sustainable development of cities and urban communities.

A waste separation system based on sensor technology and deep learning: A simple approach applied to a case study of plastic packaging waste

Plastic waste pollution is a challenging and complex issue caused mainly by high consumption of single-use plastics and the linear economy of “extract-make-use-throw”. Improvements in recycling efficiency, behaviour changes, circular business models, and a more precise waste management system are essential to reduce the volume of plastic waste. This paper proposes a simplified conceptual model for a smart plastic waste separation system based on sensor technology and deep learning (DL) to facilitate recovery and recycling. The proposed system could be applied either at the source (in a smart waste bins) or in a centralised sorting facility. Two smart separation systems have been investigated: i) the one utilising 6 sensors (near-infrared (NIR), humidity, temperature, CO2, CH4, and a laser profile sensor) and ii) the one with an RGB camera to separate packaging materials based on their composition, size, cleanliness, and appearance. Simulations with a case study showed that for a camera-based sorting, Inception-v3, a DL model based on convolution neural networks (CNN), achieved the best overall accuracy (78%) compared to ResNet-50, MobileNet-v2, and DenseNet-201. In addition, the separation resulted in a higher number of misclassified items in bins, as it focused solely on appearance rather than material composition. Sensor-based sorting faced limitations, particularly with dark colouration and organic matter entrapment. Combining the information from sensors and cameras could potentially mitigate the limitations of each individual method, thus resulting in higher purity of the separated fractions.