Waste Management Technologies Research Articles

The Recycling of Lithium from LiFePO4 Batteries into Li2CO3 and Its Use as a CO2 Absorber in Hydrogen Purification

The growing adoption of lithium iron phosphate (LiFePO4) batteries in electric vehicles (EVs) and renewable energy systems has intensified the need for sustainable management at the end of their life cycle. This study introduces an innovative method for recycling lithium from spent LiFePO4 batteries and repurposing the recovered lithium carbonate (Li2CO3) as a carbon dioxide (CO2) absorber. The recycling process involves dismantling battery packs, separating active materials, and chemically treating the cathode to extract lithium ions, which produces Li2CO3. The efficiency of lithium recovery is influenced by factors such as leaching temperature, acid concentration, and reaction time. Once recovered, Li2CO3 can be utilized for CO2 capture in hydrogen purification processes, reacting with CO2 to form lithium bicarbonate (LiHCO3). This reaction, which is highly effective in aqueous solutions, can be applied in industrial settings to mitigate greenhouse gas emissions. The LiHCO3 can then be thermally decomposed to regenerate Li2CO3, creating a cyclic and sustainable use of the material. This dual-purpose process not only addresses the environmental impact of LiFePO4 battery disposal but also contributes to CO2 reduction, aligning with global climate goals. Utilizing recycled Li2CO3 decreases the demand for virgin lithium extraction, supporting a circular economy. Furthermore, integrating Li2CO3-based CO2 capture systems into existing industrial infrastructure provides a scalable and cost-effective solution for lowering carbon footprints while securing a continuous supply of lithium for future battery production. Future research should focus on optimizing lithium recovery methods, improving the efficiency of CO2 capture, and exploring synergies with other waste management and carbon capture technologies. This comprehensive strategy underscores the potential of lithium recycling to address both resource conservation and environmental protection challenges.

Children’s understanding and STEM-related experiences of solar energy and technologies in a smart kindergarten in Norway

ABSTRACT In the quest to tackle complex societal and environmental challenges, Norway stands as one of the nations that are increasingly incorporating and transitioning to renewable and green energy solutions, particularly solar energy and technologies. In this context, science and technology education, starting from an early age, have been highlighted as important to achieving carbon-neutrality goals and sustainable futures. That notwithstanding, a significant knowledge gap persists regarding young children’s understanding and experiences with renewable energy and technologies. This study explores kindergarten children’s STEM-related knowledge and experiences, particularly regarding solar energy and technologies. Specifically, the study focuses on a pioneering kindergarten in Stavanger, Norway, that relies on solar technologies for warmth and waste management. After using a comprehensive qualitative case study approach, the study's findings underscore the effectiveness of experiential learning and multi-method approaches within early education, particularly in enhancing children’s knowledge about renewable energy and technologies.

Regional Strategies for Implementing Methane Fermentation Technology in Waste Management: Environmental, Technological, and Social Perspectives

This article discusses regional strategies for implementing methane fermentation technology in waste management, considering environmental, technological, and social perspectives. Methane fermentation plays a crucial role in modern waste management and renewable energy production. The article highlights the importance of local climatic, economic, and social conditions that affect the efficiency and profitability of biogas installations. Both barriers and opportunities for technology development in various regions are analyzed, particularly in terms of raw material availability, regulatory support, and social acceptance. Examples of biogas technology applications in different countries are provided, identifying key success factors. The article offers valuable insights for decision-makers responsible for designing and implementing methane fermentation systems, taking into account diverse regional conditions and local needs.

Critical data studies meets discard studies: Waste data reflectivity in digital urban waste tracking system

The article critically examines the implementation and impact of the Digital Urban Waste Tracking System (DUWTS), a ‘smart’ waste management technology deployed in several towns in Poland to enhance urban waste segregation practices. By integrating critical discard studies with critical data studies, the article introduces the concept of ‘waste data reflectivity’ to investigate how data representation in DUWTS influences perceptions and responsibilities within waste management. The study highlights how DUWTS employs advanced dataveillance technologies to monitor waste disposal, creating distorted reflections that obscure the complexities of municipal waste management. These distortions are analyzed through the metaphorical lenses of three mirrors – concave, kaleidoscopic, and ceiling – which reveal the illusory effects on municipalities, waste disposal companies, and residents. Additionally, the article discusses how DUWTS exemplifies ‘technologies of (un)knowing’, which systematically obscure or misrepresent waste management issues, leading to the marginalization of true responsibilities and challenges. The findings demonstrate that while DUWTS represents a technological advancement, it can also perpetuate the existing challenges in waste management by masking the true nature of waste issues and obscuring the responsibilities of different stakeholders. The article concludes by emphasizing the socio-technological consequences of such systems and the importance of a critical analysis in evaluating the effectiveness and ethics of data-driven waste management technologies.

Feasibility Study of an Integrated Waste Management Technology System for a Circular Economy in the Philippines

Increasing population and rapid economic growth result in waste management problems in the Municipality of Bay, Laguna. In response, the municipality is planning to invest in an Integrated Waste Management Technology System (IWMTS) that aims to generate public revenue. Key informant interviews, surveys, and focus group discussions were utilized for data collection. Results showed that respondents lack knowledge about IWMTS but perceive positive impacts on waste volume reduction and municipal waste management and little to no negative impacts on health, livelihood, and accessibility. Meanwhile, economic analysis showed that it is estimated to generate an annual revenue of PHP 11.986 million (USD 214,036) with yearly expenses of PHP 3.7 million (USD 66,071). These cash flows are expected to recover the overall capital outlay of PHP 48.14 million (USD 859,642). A net present value (NPV) of PHP 3.164 million (USD 56,500) and a 5.77-year payback period (PBP) were calculated through cost-benefit analysis. The environmental analysis revealed positive impacts on reducing the volume of wastes, water resources, and quality, odor and air quality, and soil and nutrients. Considering these, the study provided recommendations on project implementation to achieve sustainable waste management and circular economy in the municipality.

Waste-to-Energy technologies for municipal solid waste management: Bibliometric review, life cycle assessment, and energy potential case study

Inadequate municipal solid waste (MSW) management threatens public health and the environment. The waste-to-energy (WtE) route allows the production of electricity, heat, and other valuable chemical products. WtE consists of incineration, gasification, pyrolysis, and some emerging technologies. This study applies the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines to conduct a bibliometric analysis of WtE technologies for MSW management research. Scopus-indexed articles were examined between 1971 and 2023. Four periods were determined and analyzed in terms of their most significant results. In addition, the most pertinent journals, Waste Management, Chemosphere, and Waste Management & Research, were ranked first, second, and third, respectively. Moreover, the top contributor countries are one in America (the United States), three in Asia (China, Japan, and India), and five in Europe (Spain, Italy, Germany, Sweden, and the United Kingdom). Throughout a Life Cycle Assessment (LCA) case study, the environmental performance of gasification and incineration as relevant technologies for treating MSW were contrasted. Gasification excelled in seven environmental parameters, suggesting that developing strategies for MSW gasification on a commercial scale should prioritize this aspect. Finally, the energy potential was assessed, which provided valuable information on the societal benefits of WtE technologies in various sectors, such as education, health, and electromobility. Under their respective contexts, stakeholders should enhance MSW sorting policies, pretreatment methods, and emerging valorization options. Increasing global interest in WtE requires a social, environmental, and economic evaluation before implementation.

A review on digital transformation in healthcare waste management: Applications, research trends and implications.

At present, both emerging and developed economies have faced the challenge of higher healthcare waste generation. Developed countries are using these technologies to manage healthcare waste and cope with the challenge. Emerging economies are still struggling to understand and implement digital technologies in healthcare waste management, posing a danger to partners handling toxic and hazardous waste. The proper handling of healthcare waste is essential for social and environmental sustainability. Digital technologies that drive digital transformation in the healthcare sector impact the traditional way of managing healthcare waste. Digital technologies include artificial intelligence, blockchain, the Internet of Things, sensors, data analytics and radio frequency identification. These technologies can potentially address vehicle route planning and scheduling problems, resource optimisation, real-time tracking and the visibility of healthcare waste management. Apart from economic and environmental concerns, the operational workforce also takes care of societal well-being and implements waste management strategies and policies. Past research has focused on integrating blockchain technology to enhance traceability and transparency in waste collection and disposal activities. However, the application and impact of these technologies for managing different operations of healthcare management with sustainability is a gap bridged by the present study. This study adopts a systematic literature review to identify research trends, applications and implications of digital transformation. It proposes a digital technology-driven framework for healthcare waste management for further research.

Analysis of technologies of disposal and use fibrous paper skopje

The article examines the current state and trends in the development of waste management technologies in the pulp and paper industry, with the aim of analyzing the reasons that hinder, and sometimes make impossible, the effective utilization of fibrous waste paper to obtain environmentally safe materials and raw products. The production of paper products is one of the most capital-intensive and energy-intensive industries, second only to the metallurgical and chemical industries, with a correspondingly large amount of waste and a negative impact on the environment. The technological processes of scum formation as a result of waste paper recycling and paper production wastewater treatment are considered and analyzed. Skopje is the final waste of the pulp and paper industry, which is formed at various stages of the paper and cardboard manufacturing process, therefore it is deposited in landfills. Multiton volumes of skopje require significant areas for its storage. Despite the low IV hazard class, this leads to serious environmental problems, as the leachate from the skopje landfill pollutes surface and ground water. Technologies of possible disposal and reuse of skopje, known in domestic and foreign literature, are described and analyzed. The technology of reusing scoop is determined by its relatively environmentally safe physicochemical composition. The indicated fibrous, mineral, extractive constituents and lignin determine the possibility of reusing skopje, mainly for the construction industry. The perspective of the complex use of multi-tonnage waste – slag, sludge, ash and slag of thermal power plants as plasticizers, fillers, binders and binding components in the production of building structural and heat-insulating materials is named. Technologies for using scapula as a filler in the production of building materials require a high content of inorganic compounds and a minimum amount of organic compounds. A high content of fibrous particles and a low content of mineral substances is necessary when using scapula in the production of composite wood composite materials. The specified technological limitations ensure only small amounts of skopje use in the production of building materials. The effectiveness of using skopje as an additive to the asphalt mixture for road construction and production of fuel materials is determined by the economic costs of transportation and dewatering. It is noted that the high humidity, ash content and low calorific value of scum are the main reason for the lack of effective technologies for its utilization. The solution to the problem is the use of low-energy technologies through the direct use of osprey as a component of the soil mixture for biological reclamation of man-made landscapes. The article substantiates an environmentally safe and socially favourable option for using a soil substrate based on osprey. It is emphasised that the humidity and organic viscosity of the plant origin of osprey form the agrotechnical properties of soil substrates of prolonged action, which ensure optimal technological efficiency of phytomelioration of degraded lands. The reclaimed areas will reduce greenhouse gas emissions from the soil, prevent wind and water erosion, and ensure the environmental safety of natural and man-made ecosystems.

Role of big data analytics and hyperspectral imaging in waste management for circular economy

The accumulation of waste has a profound impact on the environment, prompting a crucial discussion about effective waste management strategies aligned with Oman Vision 2040’s sustainability goals. The consequences of municipal solid waste generation have multifaceted impacts on the environment, public health, and overall well-being of communities. Addressing these consequences requires a holistic approach that includes the integration of sustainable waste management technologies to foster a circular economy. This paper emphasizes the necessity for a paradigm shift in waste management methodologies, emphasizing the importance of Hyperspectral Imaging and Big Data Analytics into municipal solid waste management processes. This paper explores the synergistic relationship between hyperspectral imaging which is capable of precise material identification, and big data analytics to facilitate comprehensive data analysis. The integration aims to optimize waste segregation, resource recovery, and recycling processes. The utilization of data-driven insights enables predictive modeling and the identification of trends thereby facilitating more efficient and sustainable waste management practices. The harnessing of big data analytics empowers stakeholders to make informed decisions in waste management to achieve long-term environmental, and economic sustainability.

Development of a Progressive Web Application for Optimizing Solid Waste Management in Urban Contexts: a Case Study in the Coelhos Neighborhood, Recife

Objective: Develop a Progressive Web Application (PWA) to optimize solid waste management in the Coelhos neighborhood in Recife, promoting sustainable practices. Literature Review: The study is based on emerging technologies for waste management, such as IoT and optimization algorithms, addressing challenges and benefits. Method: It includes participatory diagnosis, data collection, and development of the "Limpa+Coelhos" application, integrating technologies like Angular and Google Maps to facilitate waste collection. Results and Discussion: The application significantly increased collection efficiency and community awareness, improving interaction between users and waste management services. Research Implications: The study highlights the potential of PWAs to promote more sustainable and interactive waste management practices in urban contexts. Originality/Value: The research demonstrates the effectiveness of PWAs in improving solid waste management, contributing to the development of innovative technological solutions in urban areas.

From pollution to resource: advancing swine waste treatment in the USA

Concentrated animal feeding operations (CAFOs) have led to environmental challenges, specifically waste management. Swine CAFOs generate large amounts of waste, requiring proper treatment to avoid air and water pollution. Conventional waste management technologies, such as lagoon and spray field systems, do not prevent air and water pollution impacts. Research for the past few decades led to recommendations for waste treatment technologies superior to lagoons and spray fields. Private environmental sustainability initiatives focused on reducing greenhouse gas emissions in the food supply chain have implemented biogas digester projects for capturing methane in covered swine lagoons to reduce greenhouse gas emissions. However, research indicates that methane capture alone does not solve the broader pollution issues associated with lagoon and spray field systems still in use at these CAFOs to dispose of digested effluents. The Environmentally Superior Technologies (EST) initiative in North Carolina set public standards to eliminate waste discharge, reduce atmospheric emissions, and control odors and pathogens. Research has confirmed that technologies coupling solids separation with water treatments to remove volatile organic carbon, pathogens, and reactive forms of nitrogen can meet EST standards. A designated EST—the Super Soil System—substantially reduced odor by 99.9%; pathogens by 99.99%, nutrients (phosphorus and nitrogen) by >90%, and heavy metals (cooper and zinc) by 99%. The ammonia emissions were reduced by 94.4% for the warm and 99.0% for the cool season with respect to a conventional lagoon system. Corresponding greenhouse gas emission reductions were 96.7%. Components of designated EST can be applied to retrofit covered lagoons and anaerobic digestion systems with significant environmental benefits. Recommendations are proposed, based on the collective experience with EST and current trends in animal production concentration, for environmentally safe technologies to handle excess manure produced in the USA.

Green Waqf Model for Sustainable Waste Management: A Respond to the Economic and Environmental Development

Purpose: This study proposes a green waqf model for sustainable waste management. Methodology/approach: This research is descriptive and qualitative, using secondary data from books and articles, with data collection through literature review and content analysis to organize and conclude the findings. Results/findings: The proposed green waqf model involves five stages: First, the waqif transfers cash waqf to the waqf institution (nazir). Second, nazir would promote human capital development by using waqf funds to manage training centers equipped with waste management technology. Third, nazirs through training centers would provide skills development training programs to facilitate beneficiaries (mauquf officials) to improve their skills. Fourth, after receiving the necessary skills and training from the nazir, it is expected that the beneficiaries have jobs and boost their productivity output. Finally, monitoring and evaluation should be conducted to ensure continuous improvement. The proposed green waqf model supports economic growth and the Sustainable Development Goals by creating employment opportunities and reducing poverty. As one society benefits, others are motivated to adopt the model, which amplifies its positive impact at the grassroots level. Limitations: This is literature-based research and has not yet been implemented; therefore, the detailed model needs to be further designed. The model's implementation may be hindered by varying regional infrastructure, the effectiveness of waqf institutions (nazirs), and potential cultural barriers. Contribution: The proposed green waqf model is expected to enhance economic and environmental development.

Incineration Innovation: A Path to Efficient and Sustainable Municipal Solid Waste Management in Kuwait

Municipal solid waste management has become a critical global issue due to the rapid increase in waste generation driven by urbanization and population growth. This surge in waste poses significant environmental, social, and health challenges, exacerbated by inefficient recycling and waste-to-energy facilities. Effective waste management requires comprehensive strategies encompassing waste reduction, efficient collection, sorting systems, and advanced recycling and energy recovery technologies. This study highlights the potential of incineration as a waste-to-energy solution, specifically focusing on Kuwait. By analyzing various waste management technologies and their applicability, this study emphasizes the role of incineration in transforming municipal solid waste into electricity, thereby reducing landfill use and environmental impacts. The research includes a detailed review of the existing technologies, a case study on Kuwait’s waste management practices, and an evaluation of the economic and environmental benefits of implementing waste-to-energy incineration. The findings underscore the importance of tailored waste management solutions to address specific regional challenges, promote sustainability, and enhance public health and well-being.

Emerging Green Technologies for Bio-medical Waste Treatment and Management: A Systematic Approach

Emerging Green Technologies for Bio-medical Waste Treatment and Management: A Systematic Approach

Transforming Tofu Waste into Healthy Chips: An Innovative Model of Economic Empowerment for Rural Communities

This research focuses on empowering the people of Sambirampak Kidul Village through the use of tofu waste into products of economic value, namely healthy chips. The purpose of this study is to develop and test an intervention model based on technical training and the use of simple technologies in waste management, as well as to measure the impact of the program on improving economic well-being and environmental management in the village. The research method used is a qualitative method with a case study approach, which allows researchers to deeply explore the experiences and views of the community towards this empowerment program. The data was collected through in-depth interviews, participatory observations, and document analysis, and then analyzed using thematic analysis techniques to identify the main patterns and themes that emerged from the data. The results of the study show that this program has succeeded in changing the community's perception of tofu waste from just waste to an economically valuable resource, as well as increasing income and environmental awareness in Sambirampak Kidul Village. The implication of this study is the importance of community-based education and empowerment in creating a sustainable and economically profitable waste management model. This research also makes a significant contribution to the development of community empowerment models that can be applied in various regions with similar conditions

Microplastic accumulation in water from protected areas in Western Forest Complex of Thailand

Microplastics (MPs) are emerging as ubiquitous environmental pollutants worldwide. However, no research has been conducted in freshwater ecosystems within Thai protected areas (PAs), where biodiversity and natural resources are safeguarded for human well-being. The aim of this study was to explore the occurrence and abundance of potential MPs in the water of freshwater ecosystems in Thai PAs and to examine factors affecting their presence in the Western Forest Complex in Thailand (WEFCOM). Seventy water samples were collected from eight PAs in WEFCOM using a 20 μm plankton net. The water samples underwent digestion, density separation, and filtration. Potential MPs were visually identified under a stereomicroscope, and their chemical composition was further characterized using FTIR. The results revealed a 98.57 % potential MP prevalence in the water samples, with an average abundance of 0.30 ± 0.32 item·L−1. The quantities of potential MPs among PAs were significantly different (H = 17.88, p = 0.01). Fibers (68.93 %) were the most frequently identified potential MPs, with the dominant colors being blue (22.40 %) and black (20.03 %), mostly small-sized MPs (0.05–0.5 mm; 41.80 %). The major chemical plastic types included low-density polyethylene, polyethylene, polyethylene terephthalate, polypropylene, polyethylene/polypropylene copolymer, polyester, and natural fibers. The abundance of potential MPs varied significantly among PAs, shapes, colors, and sizes (p < 0.01). Furthermore, potential MP abundance correlated with the number of tourists (p < 0.05). Proximity to open waste dumping (p < 0.01) and lower elevation (p < 0.05) tended to accumulate more potential MPs. This research suggests potential sources of microplastics in Thai PAs from wastewater effluent, human activities, and recreational activities, highlighting the urgent need for research to develop appropriate waste management technologies in Thai PAs and to raise awareness among local people and tourists about microplastic pollution.

Assistance Innovation In Organic Waste Management As A Hydroponic Media Substrate Building A Green Future

Organic waste management is becoming increasingly important in responding to current global environmental challenges. In this context, this community service aims to explore the potential for using organic waste as a substrate for hydroponic media in building a greener agricultural future in a sustainable system. The use of organic waste as a substrate for hydroponic media has great potential in supporting plant growth, because it contains available N, P2O5, K2O and C-organic nutrients which are sufficient for plant growth and development. Plants grown in organic waste-based substrates show comparable or even better growth compared to plants grown in conventional substrates. The use of organic waste in hydroponic farming also has a positive impact on the environment. More effective management of organic waste helps reduce environmental pollution and greenhouse gas emissions. This community service program has also succeeded in increasing public awareness and knowledge about organic waste management and hydroponic technology. Thus, the use of organic waste as a substrate for hydroponic media offers great potential in improving organic waste management, increasing agricultural productivity, and reducing negative impacts on the environment. This activity makes a real contribution to building a more sustainable agricultural future and contributes to global efforts in facing increasingly complex environmental challenges.

Численное моделирование миграции фильтрационных вод от объектов размещения твердых коммунальных отходов через грунтовые защитные сооружения

The paper studies numerically he processes of pollutant migration from the municipal solid waste (MSW) landfill and discusses the obtained results. Pollution of the natural environment with residues of substances and products resulting from the human household and industrial activities is one of the most urgent problems both in Russia and all over the world. In economically developed countries, in which waste management strategies are implemented to minimize garbage accumulation, priority is given to neutralization and recycling technologies, The beneficial effect of such strategy is a significant reduction of the waste volume. In Russia, despite the positive dynamics in the use of new waste management technologies, the main method of their treatment is disposal at MSW landfills. On the territory of Russia, along with the MSW landfills operated and built in accordance with environmental requirements, there are a large number of unauthorized landfills, which are of serious hazard to the environment. This raises the question of assessing the impact of such facilities on the environment. To study the characteristics of the pollutant distribution and determine the waste migration parameters, the archival data from a set of field and laboratory studies in the area of the existing MSW disposal site were used. A numerical model was constructed to describe the hydrodynamics of the migration of substances in the soil and soil layer forming the base of a solid waste disposal facility. The process of pollutant spreading is described in terms of dry residue. The model takes into account such factors as convective transport, diffusion and geological composition of the base of the waste disposal site, which have a significant impact on the pollutant migration.

A Perspective of Solid-State Fermentation As Emergent Technology for Organic Waste Management in the Framework of Circular Bioeconomy

A Perspective of Solid-State Fermentation As Emergent Technology for Organic Waste Management in the Framework of Circular Bioeconomy

Ionic-liquid-based technologies for waste management

Ionic-liquid-based technologies for waste management