Significant Environmental Footprint Research Articles

Environmental impact assessment of a direct methanol fuel cell and strategic mitigation guidelines

Direct methanol fuel cells (DMFCs) are gaining attention as a viable technology for portable and remote applications due to the benefits of methanol as fuel. However, the environmental implications of this technology have not been thoroughly evaluated. This study aims to conduct a comprehensive assessment of the environmental impact of a DMFC throughout its entire life cycle, and based on the findings, propose guidelines for minimizing the impact. To eliminate any potential biases, a two-step design methodology is applied. The first step involves obtaining the optimal preliminary design, for which a genetic algorithm is implemented. The second step is to conduct the environmental impact study on that optimal configuration. As a study case, a DMFC for a highly demanding application, such as an unmanned aerial vehicle, is selected, using green methanol as fuel. The results reveal that extraction and production stage has the greatest effect on the environment (74.1%), compared to use (25.8%) and transport stages (0.1%). Among the components of the stack, the catalysts have the most significant environmental footprint, 93.3% of the total impact of the stack during the extraction and production stage, while bipolar plates represent only 5.9%, despite comprising 86% of the stack’s mass.

Zinc and Lead Leaching from Sphalerite-Galena Concentrate Using Deep Eutectic Solvents Based on Choline Chloride: Effect of Roasting and Iodine as Oxidizing Agent.

The traditional metallurgical routes for producing lead and zinc from primary sources have a significant environmental footprint. Thus, using less pollutant solvents, such as deep eutectic solvents (DESs), would offer a greener solution in metal extraction. This study explores the use of three DESs based on choline chloride (ChCl) (1:2 ChCl-urea, 1:2 ChCl-ethylene glycol, and 1:2 ChCl-glycerol) for recovering Zn and Pb from a sphalerite-galena concentrate of the mining region in Ecuador. Leaching tests of the concentrate (untreated and roasted at 600 °C) in each DES were conducted (30 °C-24 h). The effect of adding iodine as an oxidizing agent was also evaluated. Recoveries of 2% (Zn) and 14% (Pb) were reported when leaching the untreated concentrate with DES. These recovery values increased to 11% (Zn) and 99% (Pb) after adding iodine during the leaching of the untreated concentrate. Roasting had a similar effect on leaching, increasing the recovery values of Zn (75%) and Pb (90%). Combining roasting as a pretreatment and iodine as an oxidizing agent produced higher Zn recoveries (99%) and Pb (99%). These results were compared to recoveries in acid leaching (H2SO4 and HNO3), revealing the potential of DESs as an alternative for metal recovery from primary sources.

Prediction of embodied GHG emissions of building materials in Shanghai

The construction sector stands as a fundamental component of urban development, providing indispensable spaces and infrastructure critical to societal demands. However, the consumption of considerable building materials engenders a significant environmental footprint, mainly from the exploitation, manufacturing, and processing. Characterizing the dynamic changes in a city’s future building development and material demand is crucial for achieving the goal of carbon neutrality. As an international metropolis, Shanghai faces challenges, including limited land and resources, high population density, and rapid building renewal rates. Understanding building renewal patterns and developing potential urban mineral resources will help alleviate resource shortages, achieve sustainable use of building materials, and meet carbon reduction goals. Taking Shanghai as a case study, this research applies material flow analysis alongside the carbon emission factor method to forecast the consumption of building materials and the associated embodied carbon emissions within the city. The study meticulously quantifies the evolving patterns of building material consumption and embodied carbon emissions from 2023 to 2060. The results indicate that Shanghai's civil building stock area will undergo incremental growth, attaining a pinnacle in 2030 before embarking downward. In contrast, the scope of new construction and demolition within the urban fabric will follow an ascending trend throughout the same period. Regarding material consumption, gravel, cement, and bricks are identified as the predominant components, accounting for 58%, 18%, and 15% of the total material inflow, respectively. Embodied carbon emissions from Shanghai’s civil buildings are anticipated to rise steadily, mirroring the pattern of material consumption. Notably, emissions from residential buildings are expected to experience a slight decline from 2023 to 2028, ultimately reaching 5.43 Million metric tons (Mt) in 2060. The insights garnered from this research are instrumental in deepening the comprehension of urban development dynamics and the intricacies of resource management.

Enhancing global supply chain distribution resilience through digitalization: Insights from natural resource sector of China

The steel industry, a cornerstone of the global economy, is linked to the extraction of iron ore and natural resources, serving as a critical driver of mining activities worldwide. This interdependence underscores its reliance on natural environment for raw materials and also highlights the significant environmental footprint associated with these extraction processes. Supply chains of this sector face unique challenges and opportunities in the digital age, where the integration of innovative technologies can lead to enhanced efficiency, transparency, and resilience. This study aims to explore the role of digitalization in strengthening the resilience of global supply chains, with a particular focus on the steel industry. It also investigates the influence of green policies as a potential moderating factor on the impact of digitalization on supply chain resilience. Focusing on steel sector of China, this research derives insights from data collected from 179 experts in the field, employing Partial Least Squares Structural Equation Modelling (PLS-SEM) for analysis. Our key findings reveal that digitalization can profoundly enhance global supply chain distribution resilience. This includes improvements in operational efficiency, risk management, and adaptability to market fluctuations and geopolitical tensions. Digital tools and platforms enable real-time monitoring, predictive analytics, and enhanced communication across the supply chain, contributing to more robust and responsive operations. However, contrary to initial hypotheses, the study finds that green policies do not significantly moderate the relationship between digitalization and supply chain resilience. This suggests that while environmental regulations are crucial for sustainable development, their direct impact on enhancing the resilience of supply chains through digital means is limited. The implications highlight that for the steel sector, digitalization can play critical role in achieving greater global supply chain distribution resilience. This calls for increased investment in digital infrastructure and capabilities, alongside a strategic focus on integrating digital technologies across supply chain operations. Additionally, the findings prompt a re-evaluation of green policies, suggesting that while they are essential for sustainability, their role in facilitating supply chain resilience through digitalization may require further exploration and innovative approaches.

From Textile to Structure: Advancing Sustainability in Construction Practices

The construction industry, with its significant environmental footprint, is increasingly turning towards sustainable practices to mitigate its impacts. This article explores the potential of integrating textile materials into construction processes to enhance sustainability. Textiles offer versatility, lightweight properties, and potential for recycling, making them a promising alternative to traditional construction materials. Through a review of current research and innovative case studies, this paper examines the application of textiles in various construction contexts, including structural components, insulation, and façade systems. Additionally, it investigates the environmental benefits associated with utilizing textiles in construction, such as reduced carbon emissions, energy consumption, and waste generation. Furthermore, challenges and opportunities in implementing textile-based construction methods are discussed, including material durability, cost-effectiveness, and regulatory considerations. By highlighting the advancements and possibilities in textile-based construction practices, this article contributes to the discourse on sustainable construction methodologies, providing insights for practitioners, researchers, and policymakers seeking to foster greener approaches within the built environment.

Sustainable practices in hand therapy: a global perspective.

Given its significant environmental footprint, healthcare sustainability is paramount. This study delves into the contributory role of hand therapy, assessing hand therapists' comprehension, implementation and barriers to sustainable practices, focusing on orthotic fabrication. A global survey distributed via social media and professional networks collected data on sustainability awareness, practices and educational needs from 113 respondents, primarily from North America (34%) and Europe (32%). Although 91% recognized climate change, only 34% practised sustainability. Despite 57% attempting eco-friendly actions in orthotic fabrication, such as reusing components (65%), knowledge of reusable materials was low (17%) and recycling thermoplastics was inadequate (74.3%). The main barriers were lack of awareness (59%), material scarcity (56.6%) and time constraints (54%). The findings underscore the urgent need for enhanced education, better resource availability and policy reforms to close the gap between awareness and action, promoting sustainability in hand therapy.

The Influence of Religious Identification on Strategic Green Marketing Orientation

Small and medium-sized enterprises (SMEs) play a critical role in the green economy due to their significant environmental footprint. Because more than 84% of the world’s population identifies with a religion, most SME top-executives are likely to identify with a religion that would influence their decision-making. Despite these recent advances, prior studies have focused on SMEs’ external drivers and did not consider the role of internal drivers, such as the characteristics of SMEs’ top-executives, in influencing green marketing strategy. We aim to address this gap by focusing on religious identification as a key driver of green marketing by SMEs. Specifically, we examine the effects of top-executives’ religious identification on strategic green marketing orientation (SGMO), and how such effects are moderated by political ideology. Using respondents comprised of CEO and/or owner-managers of SMEs in the US, the results show empirical evidence supporting the importance of religious identification in influencing green marketing decisions. Moreover, we found that the effects of religious identification on SGMO are more pronounced among top-executives with Conservative ideology.

Environmental sustainability of post-orthodontic dental retainers: a comparative life-cycle assessment of Hawley and Essix retainers.

Environmental sustainability has been brought into the limelight due to the global climate crisis. This crisis is driven by human activities and even the healthcare sector is no exception. Within dentistry, orthodontics is a large global market; hence, the use of post-orthodontic retainers has a significant environmental footprint. The aim of this study was to determine the environmental sustainability of post-orthodontic retention using Hawley and Essix retainers. A comparative life-cycle assessment (LCA) was carried out to compare the environmental impact of both retainers. All inputs and outputs were accounted for using the Ecoinvent database, v3.7.1, and openLCA software. Sixteen impact categories were used to determine their environmental burden. Of the 16 impact categories, the Hawley had a greater environmental burden than the Essix retainer in 12 categories. The Hawley's most significant contributors to its impact values are factory manufacturing and in-house production, with an average of 41.45% and 52.52%, respectively. For the Essix, the greatest contributor is factory manufacturing, with an average of 64.63%. However, when factoring in the lifespan of the retainers, the Essix would have a greater environmental impact than the Hawley retainer. This study employed a comparative LCA. There were also assumptions made, but these were supported by research. On the basis of the evidence gathered in this study, Hawley retainers are more environmentally sustainable than Essix retainers. These results would better enable clinicians to factor in the environmental impact and make informed decisions on the choice of retainer type.

Dental Solid Waste Analysis: A Scoping Review and Research Model Proposal

In the face of 21st-century environmental challenges, including climate change, migration pressures, and waste disposal issues, certain healthcare sectors, notably dentistry, pose a significant global environmental footprint with concerns about carbon emissions and waste production. This scoping review searches the paradox that healthcare, while dedicated to safeguarding health, inadvertently contributes to environmental degradation through waste accumulation and disposal. The analysis of the relevant literature emphasizes the imperative for an environmentally sustainable approach to dental waste measurement, disposal methods, and comprehensive education for stakeholders. Aligned with the World Conference on Sustainable Development and the United Nations’ 2030 Agenda, the study adhered to PRISMA-ScR systematic review guidelines and the Institute of Medicine’s recommendations. The study utilized Medline/PubMed and international organization websites for data retrieval, employing Boolean operator queries in Medline. The systematic literature analysis identified six cross-sectional studies (2004–2023) highlighting variations in dental waste composition due to the lack of standardized identification methods. This heterogeneity underscores the need for a proposed research model, emphasizing comprehensive methodologies and healthcare staff training in waste management, thus transforming the analysis into a scoping review. The study advocates for environmentally conscious dental practices, contributing to broader sustainable healthcare goals through sharing of a research protocol for dental solid waste management.

Sustainable next-generation color converters from P. harmala seed extracts for solid-state lighting.

Traditional solid-state lighting heavily relies on color converters, which often have a significant environmental footprint. As an alternative, natural materials such as plant extracts could be employed if their low quantum yields (QYs) in liquid and solid states were higher. With this motivation, here, we investigate the optical properties of aqueous P. harmala extract, develop efficient color-converting solids through a cost-effective and environmentally friendly method, and integrate them with light-emitting diodes (LEDs). To achieve high-efficiency solid hosts for P. harmala-based fluorophores, we optically and structurally compare two crystalline and two cellulose-based platforms. Structural analyses reveal that sucrose crystals, cellulose-based cotton, and paper platforms enable a relatively homogeneous distribution of fluorophores compared to KCl crystals. Optical characterization demonstrates that the extracted solution and the extract-embedded paper possess QYs of 75.6% and 44.7%, respectively, whereas the QYs of the cotton, sucrose, and KCl crystals remain below 10%. We demonstrated that the paper host with the highest efficiency causes a blueshift in the P. harmala fluorescence, whereas the cotton host induces a redshift. We attribute this to the passivation of nonradiative transitions related to the structure of the hosts. Subsequently, as a proof-of-concept demonstration, we integrate the as-prepared efficient solids of P. harmala for the first time with a light-emitting diode (LED) chip to produce a color-converting LED. The resulting blue-emitting LED achieves a luminous efficiency of 21.9 lm Welect -1 with CIE color coordinates of (0.139, 0.070). These findings mark a significant step toward the utilization of plant-based fluorescent biomolecules in solid-state lighting, offering promising environmentally friendly organic color conversion solutions for future lighting applications.

A conceptual procurement model for sustainability and climate change mitigation in the oil, gas, and energy sectors

This paper proposes a comprehensive conceptual procurement model to enhance sustainability and mitigate climate change impacts within the oil, gas, and energy sectors. The model integrates principles of green procurement, lifecycle analysis, and circular economy to ensure environmentally responsible sourcing and resource utilization. By addressing the significant environmental footprint of these industries, the model aims to provide a structured framework that organizations can adopt to minimize their carbon footprint, promote sustainable practices, and contribute to global climate change goals. Key components include sustainable procurement processes, environmental impact assessment frameworks, supplier sustainability criteria, and resource optimization strategies. Case studies demonstrate the model's applicability in the oil sector and renewable energy projects, highlighting challenges, outcomes, and innovative approaches. The paper concludes with recommendations for future research to refine and validate the model, ensuring its effectiveness and scalability across diverse organizational contexts.

Unveiling willingness to pay for green stadiums: Insights from a choice experiment

Sports stadiums have faced criticism due to their significant environmental footprint, contributing to the exacerbation of climate risks. In this context, green stadiums, developed to reduce resource consumption and promote sustainable practices, are gaining importance. Using a choice experiment with South Korean spectators attending professional sporting events, this study aims to better understand their preferences for diverse attributes comprising green stadiums and how personal and social norms regarding climate risks influence the formation of stadium preferences. Results reveal that respondents place great importance on the implementation of on-site renewable energy generation, showing their strong commitment to sustainability. Furthermore, spectators who support environmental norms are more willing to pay for green stadium features, indicating a growing recognition of climate-related hazards. Findings from the scenario analyses suggest that stadiums with sustainable technologies and practices have the potential to capture significant market share, even with higher ticket prices. These findings provide invaluable insights for stadium operators and policymakers in developing and promoting green stadiums and sustainability initiatives, addressing the urgent issues of climate change.

Uncovering environmental performance patterns of plastic packaging waste in high recovery rate countries: An example of EU-27

Plastic consumption and its end-of-life management pose a significant environmental footprint and are energy intensive. Waste-to-resources and prevention strategies have been promoted widely in Europe as countermeasures; however, their effectiveness remains uncertain. This study aims to uncover the environmental footprint patterns of the plastics value chain in the European Union Member States (EU-27) through exploratory data analysis with dimension reduction and grouping. Nine variables are assessed, ranging from socioeconomic and demographic to environmental impacts. Three clusters are formed according to the similarity of a range of characteristics (nine), with environmental impacts being identified as the primary influencing variable in determining the clusters. Most countries belong to Cluster 0, consisting of 17 countries in 2014 and 18 countries in 2019. They represent clusters with a relatively low global warming potential (GWP), with an average value of 2.64 t CO2eq/cap in 2014 and 4.01 t CO2eq/cap in 2019. Among all the assessed countries, Denmark showed a significant change when assessed within the traits of EU-27, categorised from Cluster 1 (high GWP) in 2014 to Cluster 0 (low GWP) in 2019. The analysis of plastic packaging waste statistics in 2019 (data released in 2022) shows that, despite an increase in the recovery rate within the EU-27, the GWP has not reduced, suggesting a rebound effect. The GWP tends to increase in correlation with the higher plastic waste amount. In contrast, other environmental impacts, like eutrophication, abiotic and acidification potential, are identified to be mitigated effectively via recovery, suppressing the adverse effects of an increase in plastic waste generation. The five-year interval data analysis identified distinct clusters within a set of patterns, categorising them based on their similarities. The categorisation and managerial insights serve as a foundation for devising a focused mitigation strategy.

Life cycle assessment (LCA) and energy assessment of the production and use of windows in residential buildings

There is an observable scarcity of comprehensive research results comparing the environmental damage associated with both the production of windows and their subsequent operation. The environmental impact of the operation of windows depends on their thermal insulation parameters, and thus the amount of heat that must be generated to heat the building. The type of heating system and, above all, the type of fuel used to generate heat are also not without significance. Unfortunately, in Poland, a significant proportion of single-family houses operate on the fossil fuel heating system, including on coal and fuel oil. It is therefore important to present an environmental balance sheet of both the production and operation of windows for different variants of building heating. The purpose of the study was to determine: to what extent the manufacturing of windows of different construction and different insulation parameters affects the environment, to what extent does the negative environmental impact of the process of manufacturing with greater insulation compensate by the lower environmental impact related to savings on fuel (gas, coal, fuel oil) used to generate heat during the operation of windows. Three types of windows were selected for a detailed analysis: a triple-glazed aluminum construction, a double-glazed PVC construction and a triple-glazed PVC. The research results show that in the case of all impact categories, the greater environmental losses related to the improvement of the thermal insulation parameters of the windows at the production stage are fully compensated at the stage of their useful life, regardless of the type of fuel used to heat the buildings. Double-glazed PVC windows should be phased out of production due to significant environmental footprint associated with their operation.

Sustainability, resilience and innovation in industrial electronics: a case study of internal, supply chain and external complexity

AbstractThe electrical and electronic equipment industry is key to climate and energy transitions, but its activities have a significant environmental footprint. Tangible improvements in the sustainability of this sector are difficult because of the layers of complexity that characterize this industry’s products, processes and supply chains. This article analyzes the different facets of complexity relevant to sustainability in the industrial electronics sector, by implementing an in-depth longitudinal case study of a leading Italian business-to-business multinational company. We identify three core dimensions of complexity management that are pivotal for corporate sustainability: internal complexity, supply chain complexity and external complexity. We find that handling sustainability in complex production systems with multitier and multiproduct value chains presents organizational and managerial challenges but also offers new competitive opportunities for resilience and innovation. Once the appropriate metrics, know-how and information flows are established, our results highlight the transferability of sustainable innovations in these complex environments.

Green Enterprise Architecture (GREAN)—Leveraging EA for Environmentally Sustainable Digital Transformation

Digital Transformations (DT) play an increasingly important role in academia and business, yet their significant Environmental Footprint (EF) is often overlooked, sidelining their potential for Environmental Sustainability (ES). This paper bridges this gap by integrating ES into the discourse of DT, proposing Green Enterprise Architecture (GREAN) as a method for sustainable transformation. Utilizing a Design Science Research approach, we developed an artefact outlining a comprehensive strategy for embedding ES in DT across various layers of an organization. The tool’s need was validated via a systematic literature review (SLR), highlighting the significant research gap in Green Enterprise Architecture. The artefact provides concrete Courses of Action (CoAs) for incorporating ES into the organizational strategy, business, data, application, and technology layers and proposes relevant capabilities to address this. The paper further presents an ES-aware business capability modelling, an innovative business modelling approach that integrates environmental sustainability principles by using (in a novel way) the presentation and analysis methods that capability mapping offers. The proposed artefact serves as a starting point for environmentally sustainable DTs. Future research directions include in-depth exploration of each enterprise layer for ES, real-world validation of our proposed tools and concepts, and the expansion of these into a full framework.

Enfermedad renal crónica, diálisis y cambio climático

Chronic kidney disease is a serious public health problem and in clear relation to climate change and ecosystem maintenance. Renal health is particularly vulnerable to the impacts of climate change, and dialysis therapy (hemodialysis and PD) has a significant environmental footprint, conditioned by energy consumption and greenhouse gas production. In the last 50 years, people have changed ecosystems faster and more extensively than in any other period in human history. It is a consequence of ever-increasing demand for food, fresh water, fuel, industry, etc. and the result has been a substantial and largely irreversible loss of the diversity of life on Earth. Since 1979, human activities have caused the extinction of 60% of mammals, birds, fish and reptiles. There is an urgent need to adopt “Green Nephrology” measures by developing sustainable environmental solutions for the prevention and treatment of kidney diseases.

Is there a relationship between environmental performance and outward FDI? A study of Chinese MNEs

PurposeThis paper aims to examine the question, “How do firm-level, home-country and host-country environmental performance (EP) affect the outward foreign direct investment (OFDI) of Chinese multinational enterprises (MNEs)?”Design/methodology/approachThe authors examine the relationships between EP and OFDI propensity and between EP and OFDI intensity using a sample of 359 Chinese firms in industries with a significant environmental footprint between 2009 and 2019 (2,002 firm-year observations) and a Heckman two-stage model.FindingsThis study shows that the propensity for OFDI by Chinese MNEs is significantly and positively related to the firm’s prior EP and the country-level EP of China. However, the amount of FDI invested is significantly and positively related to the firm’s prior EP and negatively related to the EP of the host country.Research limitations/implicationsThe findings suggest that FDI in a country by an MNE is determined by a combination of firm-level EP, home-country EP and host-country EP. This study finds that the decision to undertake FDI (propensity) and the decision about how much to invest (intensity) are determined by different factors. The propensity for FDI is determined by the home-country EP and firm-level EP. However, the intensity of FDI is determined by a combination of the host country EP and firm-level EP. A limitation is that this study only examines MNEs in China, so the findings may not apply to other countries.Originality/valueThis paper shows that MNEs’ EP is positively related to the propensity and intensity of their OFDI decisions. However, this paper shows that the home-country and host-country EP may also play an important role in determining the propensity or intensity of OFDI.

Catastrophe by Design in Population Games: A Mechanism to Destabilize Inefficient Locked-in Technologies

In multi-agent environments in which coordination is desirable, the history of play often causes lock-in at sub-optimal outcomes. Notoriously, technologies with significant environmental footprint or high social cost persist despite the successful development of more environmentally friendly and/or socially efficient alternatives. The displacement of the status quo is hindered by entrenched economic interests and network effects. To exacerbate matters, the standard mechanism design approaches based on centralized authorities with the capacity to use preferential subsidies to effectively dictate system outcomes are not always applicable to modern decentralized economies. What other types of mechanisms are feasible? In this article, we develop and analyze a mechanism that induces transitions from inefficient lock-ins to superior alternatives. This mechanism does not exogenously favor one option over another; instead, the phase transition emerges endogenously via a standard evolutionary learning model, Q-learning, where agents trade off exploration and exploitation. Exerting the same transient influence to both the efficient and inefficient technologies encourages exploration and results in irreversible phase transitions and permanent stabilization of the efficient one. On a technical level, our work is based on bifurcation and catastrophe theory, a branch of mathematics that deals with changes in the number and stability properties of equilibria. Critically, our analysis is shown to be structurally robust to significant and even adversarially chosen perturbations to the parameters of both our game and our behavioral model.

Effect of mastic gum integration on improvement of polylactic acid biodegradable films

AbstractCurrently, 90% of all packaging films are composed of non‐renewable, petroleum‐based materials. However, these materials have a significant environmental footprint. Polylactic acid (PLA) is a well‐known biodegradable thermoplastic polymer. However, the use of PLA poses some inherent challenges, like the brittleness of PLA films. For this study, with the objective of overcoming the shortcomings of PLA films, mastic gum (MG), which is an under‐utilized hydrophobic polymer, was incorporated into PLA, and the resultant films were characterized for their chemical (x‐ray diffraction [XRD], Fourier‐transform infrared [FTIR]), thermal (thermogravimetric analysis [TGA], dynamic mechanical analysis [DMA]), optical (optical microscope, color, and opacity), and barrier properties (water vapor permeability [WVP]). MG addition yielded films with much higher opacities and decreased WVPs up to 80%. Optical microscope images revealed the presence of some defects for films with MG concentrations above 1% g/g solvent, which also decreased the film's tear resistance. Glass transition temperature (Tg) values are reduced with MG addition, resulting in less rigid films at room temperature. In the end, MG incorporation yielded more flexible films with much better water barrier properties. In addition, all other properties of the films were drastically modified with MG addition. Hence, MG/PLA is demonstrated to be a promising biopolymer combination for the preparation of biodegradable films as a food packaging material.