Reuse Of Waste Research Articles

Review Article: Interlocked Block Added With Mineral Coal Burning Waste For Rural Road Paving

Objective: The objective of this study is to present a scientific bibliographic review article on the use of light ash on interlocked concrete floors and identify possible scientific gaps related to the reuse of light ash, which is a by-product from thermoelectric plants, in terms of technical feasibility for the production of the material and in the exploitation of the sustainable potential for reuse. Theoretical reference: It is based on concepts of environmental sustainability, reuse of industrial waste, and improvements in concrete properties through the addition of fly ash, a byproduct of the burning of coal in thermoelectric plants. It uses authors and studies that address the reduction of environmental impacts in civil construction and the technical feasibility of sustainable materials for paving. Method: Searches were carried out on scientific databases, using the advanced search mechanism of the ScienceDirect platform, published by Elsevier (www.sciencedirect.com). The keywords used for the research in the first filter were "fly ash" and "paver block", and the summary of articles and keywords were analyzed, the selected articles prioritized publications of the last five years (2019-2024), in order to include recent advances and technological developments. In a second filter, a new review of the articles already collected was carried out, in the software management of bibliographic reviews and citations Zotero (https://www.zotero.org/), through keyword search and search in the full text of the articles. Results and Discussion: The results and discussions of the article address the properties and impacts of the incorporation of light ash into concrete, highlighting technical, environmental and economic aspects. Main points covered, Properties of light ash and resulting concrete, environmental impacts, practical applications and challenges and limitations. Research Implications: The practical and theoretical implications of this research are discussed, providing insights into how the results can be applied or influence practices in the field of environmental impacts and CO2 emissions, as well as economic and social implications. These implications may include an alignment with sustainable policies and sustainable waste management. Originality/Value: This study contributes to the literature by the innovative and specific theme, with a combination of infrastructure and sustainability. The relevance and value of this research is evidenced by its contribution to environmental sustainability and strategic relevance.

Assessing the Environmental Impact of the Mining Industry

Mining is very vital to the production of goods, services and infrastructure; it advances the quality of lives in the society. However, the possible hazard of waste and radioactivity generated by mining, dumping and tailing, has called on the society to find ways of seeking remedy that will adequately treat mining waste from mine dump, tailing and abandoned mine. Mine waste reuse and recycling in mining industries could offer cost-effective benefits through offsetting raw material requirements and decreasing the volumes of waste to be managed. Impact and mechanism of mine damage to the environment was discussed together with the remediation principles. Practical ways in which country’s state authority and civil society can keep a close watch and enhance the enforcement of laws and regulations were highlighted. The prediction for the control of mineral exploration and environmental assessment was also discussed for executing a specific control to take preventive measures.

THE IMPLEMENTATION OF GOOD ENVIRONMENTAL GOVERNANCE IN WASTE MANAGEMENT

Waste is a national problem in Indonesia that has not found an optimal solution and tends to get worse. Effective waste management for environmental preservation and extinction is one of the principles of good environmental governance. An important part of good governance is collaboration between the private sector and the community to achieve effective, efficient, and appropriate waste management. This study aims to assess the implementation of waste management in Tuah Karya Village. This study uses a qualitative descriptive method with data collection techniques including observation, interviews, and documentation. The results of the study show the implementation of Good Environmental Governance in waste management in Pekanbaru, with a focus on the steps that have been taken by local governments to build effective waste management in their respective regions. Several areas in Pekanbaru have implemented good waste management practices, such as building waste banks, recycling waste into new products, and promoting waste reuse. This study examines the forms of implementation of Good Environmental Governance in waste management in Pekanbaru. In the case of Waste Bank management in Tuah Karya, based on the principles of good environmental governance, it turns out that one of the seven principles, namely access to information, has not been able to achieve the goal of realizing a Smart City in Pekanbaru. This is because many residents are still unaware of the existence of the Waste Bank, and many are reluctant to participate. These challenges make it difficult for the Waste Bank to contribute to the ideals of Smart City in Pekanbaru.

Technologies for the reuse of demolition waste in the production of geopolymer-based building materials: prospects and opportunities

In a climate change scenario that is increasingly affecting our daily lives, it is essential to rethink the reuse of existing resources and avoid the exploitation of raw materials. If we consider the stock of existing buildings in Italy, we cannot ignore the fact that most of them are in a state of decay or in need of major maintenance; the recovery or demolition of these buildings generates a considerable amount of waste that has a negative impact on the environment, from transport to disposal. A sustainable design approach can achieve interesting results in terms of economic, environmental and social impact. Starting from the final phase of the life cycle of buildings, this paper aims to show the possibilities of recovering traditional building materials such as cement, brick and tuff. The use of innovative production technologies will allow the reintroduction of these materials to the market, with consequent benefits in all aspects of the ‘sustainability triad'. The aim of the work is to identify a practical, easy-to-use process for the production of eco-sustainable materials that, while retaining their intrinsic chemical-mineralogical characteristics, can be easily used in the context of the existing built heritage thanks to the compatibility between these new materials and the pre-existing substrate. The innovative results obtained as part of an international research project show how the use of demolition waste for the composition of geopolymer mixtures allows the reuse of large percentages of construction waste, while guaranteeing the mechanical performance of materials produced with traditional techniques, which have a high level of emissions; the production of geopolymers allows an 80% reduction in emissions compared to the production of Portland cement. The paper is intended to serve as a starting point for further in-depth application of the mixtures produced and to provide reflections and future research directions.

Municipal solid waste management strategy selection: Multi-criteria decision making under uncertainty

For decades, due to the increasing generation of waste and its negative environmental impacts, efficient municipal solid waste management (MSWM) has become a major concern of sustainable development. On the other hand, selecting an appropriate strategy remains a critical issue for municipal authorities without applying a multi-criteria decision-making (MCDM) approach. This study aims to select the best MSWM strategy from five potential MSW management strategies under various factors that influence waste strategy selection, such as economic, social, technical, and environmental factors. This study used three fuzzy integrated MCDM methods, namely the Decision-Making Trail and Evaluation Laboratory (DMATEL), the Analytic Network Process (ANP) and the Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) to select best MSWM strategies. The study used data from a survey of experts who had knowledge of waste management. The survey data was then analyzed using the DMATEL, ANP and TOPSIS methods under a fuzzy environment. The Fuzzy DEMATEL method is used to identify the causal relationships among the criteria and sub-criteria, while ANP is applied to determine the relative weights of MSWM strategy selection sub-criterion. Finally, TOPSIS is used to rank the waste management strategies depending on established sub-criteria. The result of fuzzy TOPSIS demonstrated that recycling of municipal solid waste is the best alternative which has the highest closeness coefficient followed by reuse. Thus, the result of this study revealed that MSWM strategies are ranked as: waste recycling (A1), reuse (A2), reduce (A1), energy recovery (A4), and disposal (A5), with closeness coefficient values of 0.80, 0.61, 0.60, 0.47, and 0.17, respectively.

Drivers assessment of photovoltaic waste recycling and reuse in China: A rough-based hierarchical DEMATEL approach

Drivers assessment of photovoltaic waste recycling and reuse in China: A rough-based hierarchical DEMATEL approach

Enhanced Pb immobilization by CaO/MgO-modified soybean residue (okara) in phosphate mining wasteland soil: Mechanism and microbial community structure.

Lead (Pb) contamination is an inevitable consequence of phosphate mining, necessitating the development of effective remediation strategies. This study investigated the use of CaO/MgO-modified okara (CMS) as an eco-friendly approach to remediate Pb-contaminated soils from phosphate mining wastelands. In the present study, following 30d of CMS application, the exchangeable Pb content was significantly decreased to 10.46%, with the majority of Pb transforming into more stable forms: carbonate-bound Pb (56.44%), Fe/Mn oxide-bound Pb (11.03%), and organic-bound Pb (19.58%). Additionally, the treatment led to a substantial enhancement in total phosphorus, available phosphorus, ammonium, and soil organic matter, thereby improving soil fertility. The microbial community structure was also significantly influenced by CMS, with a notable increase in Firmicutes to 45%. Key genera within the microbial community included Azospirillum, Pseudoxanthomonas, Sphingomonas, and Microvirga, with Pseudoxanthomonas and Massilia being the main differential species. These genera were significantly positively correlated, contributing to the maintenance of microbial community homeostasis and promoting the production of CO32- and PO43-, which further accelerated Pb immobilization. The results indicate that CMS is an effective amendment for Pb immobilization in contaminated soils, enhancing soil fertility and modulating the microbial community to promote Pb stabilization. This provides valuable insights into the ecological remediation of Pb-contaminated soils and water bodies, highlighting the potential of waste reuse in environmental management.

The importance of logistics in the circular economy of agricultural enterprises

The article is intended to show the role of logistics in the circular economy. This is because it encompasses the actual flow of products from their source of production to the final consumer, taking into account all the tasks and activities involved, ensuring efficient, sustainable and economic processes. Circular economy aims to maximise product value through eco-design, increased sustainability, improved quality, eco-efficiency and the widespread use of renewable materials. This approach promotes waste reuse, recycling and recovery, as well as treating waste as a valuable resource. The agricultural industry deserves special attention in the context of the circular economy, so improvements have been proposed to change the agricultural enterprise to a greener and more practical one that applies the principles of the circular economy. Thus, biogas production, the transportation of slurry via pipeline system and the creation of an on-site photovoltaic panel farm were suggested. The application of these improvements could make the company independent and use only its resources. Furthermore, by using renewable energy sources, the company could increase its competitiveness in the market, become an independent entity and reduce its operating costs, all while increasing its efficiency.

The Effect of Pozzolanic Material and Waste Foundry Sand on Fresh Mortar Properties and Prediction of Some Results by Artificial Neural Networks

Waste reuse is frequently included in scientific studies. As a result of the increase in production after the Industrial Revolution, this waste is increasing day by day. One of these wastes is waste casting sand used as molding sand in the casting industry. In this study, the effects of this waste and silica fume and fly ash, which are also waste materials, on fresh mortar properties were investigated. Different proportions of fly ash, foundry sand, and silica fume mixtures were used in the study. Spreading tests were carried out on the mixtures with mini v funnel and mini-slump funnel according to EFNARC. According to the experiments, we tried to determine the most suitable mortar mixtures in terms of workability with appropriate material selection. The effect of waste materials on workability has shown a positive development. It tried to determine the test results of some mixtures by modeling with artificial neural networks. The effect of water content in some mixtures was also analyzed, and it was concluded that a 0.3 w/b ratio was the most suitable. The cement dosage was kept constant at 800 kg/m3, and other variables were analyzed. The substitutions of pozzolanic materials were proportioned over the cement dosage.

Transforming Waste into Value: Sustainable Recycling of Agricultural Resources Under the ’Carbon Peak and Carbon Neutrality’ Vision

The “Carbon Peak, Carbon Neutrality” vision emphasizes the urgency of adopting sustainable practices. This study primarily stresses on how China’s agricultural waste can be managed for long-term environmental sustainability and energy development. This study presents novel techniques for power generation from biogas and utilizes environmental enzyme technology to recycle agricultural waste, therefore fostering low-carbon development and facilitating green energy transitions. A PEST approach examines the social, economic, political, and technical factors that impact the utilization of agricultural waste resources, while a prototype value-added reuse system is built to demonstrate practical applications. Feasibility studies back up the proposed methods with evidence from a SWOT analysis. Furthermore, a systematic questionnaire survey assesses public knowledge and behavior about the reusing of agricultural waste, thereby offering information on society’s preparedness for implementing these technologies. The results highlight the possibilities of waste crop recycling technology to stimulate industrial activities, especially in the manufacturing of bio-based products fit for national carbon neutrality targets. This study emphasizes the need to include agricultural waste recycling into changes towards sustainable energy. Its encouragement of the invention of green energy solutions helps the study to offer an insightful analysis for the progress of carbon neutrality initiatives.

The deployment of circular industrial ecosystems – the condition of eco-efficient elimination of the consequences for the environment caused by military actions

The consequences of military actions are an unprecedented case of environmental damage in Ukraine. According to official data, more than 670,000 tonnes of waste were generated due to the damage (destruction) of buildings and structures as a result of hostilities in the territory of Ukraine, which can be considered the minimum possible amount according to the preliminary assessment. Attacks continue and lead to increased volumes of waste, burden on land use in communities and creation of ecological threat. International experience shows the possibility of obtaining ecological, social and economic benefits from the reuse of construction and demolition waste. In the context of the implementation of the European integration vector, Ukraine should focus on the effective management of such waste based on the principles of the circular economy − reuse, recycling and recovery. The fulfilment of this urgent task is possible thanks to the creation of conditions for the deployment of industrial circular ecosystems − a set of entities of various economic activity sectors and civil society that work and evolve together with the aim of creating added value based on the principles of reducing the use of primary materials, reusing materials and products, their processing and recovery, thereby extending the life cycle of goods and forming their enhanced value. The purpose of the article is to substantiate the expediency of deploying circular industrial ecosystems as a condition for eco-efficient elimination of the consequences for the environment caused by military actions. Based on the example of the eponymous project of the global company Energy Vault on gravitational energy storage using composite blocks, which are created with industrial waste and construction and demolition waste, key actions are outlined that will contribute to the emergence and development of circular industrial ecosystems in Ukraine around existing technologies. A range of problematic issues that need to be solved for the formation of institutions, routines, behaviour and culture of economic entities for the deployment of circular industrial ecosystems, in particular, with the aim of eco-efficient elimination of the consequences for the environment caused by military actions, is outlined. Recommendations have been provided on updating the legal support for the management of waste from the demolition of buildings and structures as a result of hostilities; reforming and expanding the range of tools for stimulating sustainable waste management; as well as developing interdisciplinary research.

Sustainability in Solid Waste Management to Reduce Environmental Impact and Improve Resource Efficiency

Solid waste management is essential for promoting environmental sustainability, public health, and resource conservation. This paper examines the multifaceted challenges associated with solid waste, including municipal, industrial, and hazardous waste streams. Inefficient waste management practices lead to detrimental impacts on ecosystems, human health, and climate change. A holistic approach is necessary, emphasizing waste reduction, reuse, recycling, and responsible disposal techniques. The project aimed to enhance solid waste management through comprehensive strategies, including awareness campaigns, waste segregation initiatives, and the establishment of treatment facilities. The results showed a notable reduction in waste generation, an increase in recycling rates, and improved waste segregation practices among residents and businesses. Additionally, the project successfully developed enhanced treatment and disposal infrastructure, including composting facilities and engineered landfills, which adhere to environmental safeguards. Significantly, the project incorporated waste-to-energy technologies, demonstrating their potential in reducing landfill volumes while generating valuable energy. A prototype system was developed to convert waste combustion heat into electrical energy, which was then stored in batteries for practical use, illustrating the feasibility of small-scale energy recovery from waste. Challenges encountered, such as community resistance and logistical issues, highlight the importance of continuous engagement and collaboration among stakeholders. The findings underscore the necessity of robust policies and community involvement in implementing sustainable WM practices. Overall, this research contributes to the understanding of effective solid waste management strategies and their role in achieving environmental sustainability and resource recovery, offering valuable insights for communities seeking to improve their waste management systems.

INVESTIGATION OF THE EFFECT OF SEWAGE SLUDGE ASH ON THE MECHANICAL PROPERTIES OF MORTAR SPECIMENS

In recent years, the rising awareness of environmental protection and the rapid depletion of natural resources have increased the strategic importance of sustainable building materials, especially in the construction sector. Increasing construction trends lead to a noticeable increase in the use of materials. In this context, the environmental impacts of cement production come to the forefront with the amount of energy used in clinker production and the resulting CO2 emissions. Recycling of waste materials can solve the problem of waste storage and reuse of waste materials can form the basis of sustainable construction approaches to reduce energy consumption. This research focuses on the incineration of dewatered sewage sludge into ash and its usability as a building material. In this context, the incinerated sewage sludge ash was ground and used as an additive material at different ratios instead of cement to produce mortar specimens. Flexural and compressive strength tests were carried out to determine the mechanical properties of the sewage sludge ash admixed specimens by comparing them with mortar specimens produced with Class F fly ash on the 7th, 28th and 90th days.

Decision Framework for Eco-Friendly Hospitality: A Sustainable Future for Hotel Industry in High-Altitude Regions

ABSTRACT Sustainable or green hotels, also known as eco-friendly lodging facilities within the hospitality industry, prioritize environmental and social responsibility in their daily operations. These establishments aim to minimize their ecological impact and create beneficial effects on local communities while providing guests with a pleasant and comfortable stay. This study aims to investigate customer preferences regarding eco-friendly services in hotels and to provide hotels with the most favorable strategies to meet these demands in mountainous tourism spots in Pakistan. This study employed a novel hybrid approach FUCOM-Fuzzy QFD. Both “WHATs” (green attributes) and “HOWs” (technical requirements/strategies) are gathered from the literature. The findings indicated that among the nine sustainability traits of hotels, consumers favored features associated with efficient energy and water management, as well as the use of environmentally sustainable products. They prefer to be provided with these attributes. An analysis of the house of quality (HOQ) showed that hoteliers should focus on “waste reuse and recycle,” “use of energy efficiency techniques and technologies,” and “use of recycled material” being the top three strategies assessed by experts during the design phase. This study provides a decision framework for hoteliers, policymakers, and the government to incorporate sustainable features in hotels focusing on mountain tourism in Pakistan. This research is one of its kind that explored the relationship between WHATs and HOWs and the correlation between HOWs regarding the hospitality industry in mountain tourism in Pakistan.

Towards responsible resource utilization: A review of sustainable vs. unsustainable reuse of wood waste

Abundant wood waste is generated globally, but the literature lacks a framework distinguishing sustainable versus unsustainable reuse practices. This gap hinders policy makers and stakeholders from effectively supporting responsible resource utilization. As such, this scoping review aimed to address this gap by evaluating wood waste reuse practices through ecological, financial, and social sustainability lenses. A comprehensive database search yielded 1,150 records, narrowed to 106 included studies through eligibility screening. Data on study details and sustainability factors was extracted without a formal quality appraisal. The protocol ensures a rigorous evidence-mapping approach. The findings revealed that sustainable uses included renewable energy, adsorbents, construction materials, and composting applications. However, toxic preservatives, uncontrolled emissions from burning, intensive harvesting impacts, and contamination risks from uncontrolled mulching perpetuate ecological, social, and financial challenges. Preventing contamination and managing sustainability trade-offs are key priorities. Research innovations, stringent quality control, and supportive policies are imperative to distinguish practices aligned with sustainability principles from those inadvertently causing harm. This review provides a comprehensive framework for making informed decisions to progress wood waste systems toward responsible resource utilization.

Soluble Proteins From Conventional and Organic Eggshell Membranes With Different Proteomic Profiles Show Similar InVitro Biofunctions.

The eggshell membrane (ESM), resembling the extracellular matrix (ECM), acts as a protective barrier against bacterial invasion and offers various biofunctions due to its porous structure and protein-rich composition, such as ovalbumin, ovotransferrin, collagen, soluble protein, and antimicrobial proteins. However, the structure of ESM primarily comprises disulfide bonds and heterochains, which poses a challenge for protein solubilization/extraction. Therefore, the method of dissolving and extracting bioactive protein components from ESM has significant potential value and importance for exploring the reuse of egg waste and environmental protection. In this study, soluble ESM proteins (SEPs) were extracted from conventional (industrial-fed) and organic (free-grounded) using an acidic 3-mercaptopropionic acid (3-MPA) extraction strategy. FTIR was employed to monitor the chemical changes in the ESM, while LC-MS/MS was used to conduct the proteomic analysis. The biocompatibility and effects of SEP cocktails on ECM synthesis were also investigated. The results indicated that the acidic 3-MPA strategy effectively altered the ESM chemical composition, thereby facilitating SEPs extraction. The SEPs from conventional and organic eggs have different protein profiles but with partial overlapping. SEPs from both sources showed similar desirable biosafety profiles and dose-dependent promotion of osteoblastic (ECM) component synthesis, suggesting that different egg sources may contribute to consistent core biological functions of protein products, they may also introduce different functional priorities.

Reuse of leather waste into wood particleboards: physical–mechanical and thermal properties

Reuse of leather waste into wood particleboards: physical–mechanical and thermal properties

Síntese e Caracterização de Bioadsorvente de Spondias mombin L. para Remoção de Azul de Metileno utilizando ClZn2, NaOH e Al2(SO4)3.14H2O

Objective – The objective of this study was to synthesize and characterize a bioadsorbent produced from Spondias mombin L.’s endocarp, using the chemical activators ClZn2, NaOH and Al2(SO4)3·14H2O, and evaluate its efficiency in removing methylene blue dye from aqueous solutions. Methodology - The research was structured in three stages: preparation and activation of activated charcoal at different temperatures and pyrolysis times; material characterization regarding ash content, moisture content, yield and pH; and carrying out adsorption tests to determine the efficiency of dye removal. Originality/relevance - This study addresses the theoretical gap related to the reuse of agricultural waste to produce adsorbent materials, promoting sustainable alternatives to the use of conventional adsorbents and highlighting their relevance for the treatment of effluents. Results - The adsorbents activated with NaOH and ClZn2 demonstrated greater efficiency, with emphasis on the materials NA250-3, ZN300-2 and ZN300-4, which presented adsorption capacities of 1.40 mg·g⁻¹, 1.39 mg·g⁻ ¹ and 1.37 mg·g⁻¹, removing 93.23%, 93.02% and 91.69% of the dye, respectively. The ZN250-4 material stood out for its balance between performance (1.33 mg·g⁻¹, 88.78% removal) and cost-benefit, due to its high yield (64.27%) compared to the others. Theoretical/methodological contributions: The research expands knowledge about ideal activation conditions and use of chemical activators, providing support for bioadsorbents applications. Social and environmental contributions: The research promotes sustainability by proposing the reuse of agricultural waste as raw materials for the production of biosorbents, reducing environmental pollution and offering solutions for the treatment of effluents.

A Closed-Loop Economy in the Meat Industry for Generating Alternative Energy from Biogas Plants

This study deals with the concept of a closed-loop economy in the meat industry through the use of animal by-products in biogas plants for electricity generation processes. The purpose of the study was to identify the volume of by-products from the slaughter of cattle and pigs, how the by-products are managed, and the efficiency of their use in biogas plants for electricity production processes. The analyses used data from the Central Statistical Office, the Chief Veterinary Inspectorate, and information obtained from the Polish Agency for Enterprise Development. Studies from the literature on closed-loop economies and bioeconomies were also a valuable source of information. Based on case studies, this paper also presents examples of a closed-loop economy in meat companies. In the area of pork, poultry, and beef livestock production, the analysis covered the years 2004–2022, while in the area of the production and use of meat industry by-products, the data came from 2017–2022. The study shows that reducing the production of waste in the meat industry and the reuse and recycling of waste are important parts of a closed-loop economy. In meat companies, waste from slaughtering animals can be properly managed, either by processing it into animal feed or by using it in biogas plants to generate electricity or heat. Taking into account the number of by-products from cattle and pig slaughter in the country, biogas plants could produce approximately 95,232 MW of electricity per year, which constitutes approximately 4.3% of the energy intensity of the meat industry in Poland.

Reuse and Recycling of Waste from the Filtering of the Food Industry in the Construction Sector

Reuse and Recycling of Waste from the Filtering of the Food Industry in the Construction Sector