Positive Environmental Impact Research Articles

Sustainable recycling management: configuration of risk factors and resilience strategies

Purpose Recycling is associated with positive social and environmental impact, but previous studies have overlooked the cost of recycling operations. Based on the dynamic capability view, the purpose of this study was to identify and evaluate risk factors and resilience strategies within the recycling industry, prioritize these factors and identify the optimal combination of resilience strategies and risk factors to improve market performance. Design/methodology/approach The research questions were addressed in three subsequent studies. In Study 1, qualitative interviews were conducted to identify risk factors and strategies to mitigate those risks. In Study 2, quality function deployment methodologies were implemented via case studies derived from three different companies. Based on the results of Studies 1 and 2, in addition to the use of fuzzy set qualitative comparative analysis, Study 3 aimed to determine the optimal combination of risk factors and strategies impacting market performance. Findings The results across the three studies revealed a number of risk factors as well as which risk factors and resilience strategies have the greatest impact on market performance. Specifically, it was found that higher levels of readiness, response and recovery strategies lead to greater market performance, whereas weak readiness, response and recovery strategies, along with low societal, environmental and health and safety risk factors, significantly inhibit performance. Originality/value This research extends current understandings of market performance in relation to recycling industry management and offers insight for decision-makers toward combating significant risk factors in business-to-business settings.

Synergistic effect of combining UiO-66 nanoparticles and MXene nanosheets in Pebax mixed-matrix membranes for CO2 capture

The use of membrane-based gas separation has garnered significant interest owing to its cost-effectiveness, outstanding performance and positive environmental impact. The performance of gas separation membranes can be considerably enhanced by mixed-matrix membranes (MMMs), but poor interactions between additives and membrane matrix and the agglomeration of highly incorporated fillers in MMMs limit the benefits of overcoming tradeoff effect. Therefore, the regulation of the state of fillers in membrane matrix is a crucial indicator in the development of MMMs. In this study, MXene (Ti3C2Tx) nanosheets and UiO-66 nanoparticles were prepared and used as fillers, in combination with a Pepax-1657 matrix, to synthesize MMMs for CO2-gas separation. As-prepared MMMs were used for the separation; the large pores (0.5–0.6 nm) of UiO-66 served as a highway to enhance CO2 permeability, and MXene nanosheets were used as selective channels to achieve high selectivity via the terminal polar surface groups of MXene. The combination of UiO-66 and MXene not only enhanced the selectivity, but also increased the solubility and diffusivity via selective CO2 adsorption and the tortuous pathway provided by MXene nanosheets. As a result, adding MXene and UiO-66 to Pebax helped MMMs overcome the tradeoff effect. MMMs loaded with 10 wt% MXene/UiO-66 exhibited a CO2 permeability coefficient of 214.6 Barrer and an ideal CO2/N2 selectivity coefficient of 102. Dual filler-containing MMMs showed enhanced CO2 permeability coefficient and CO2/N2 selectivity in comparison to pristine Pebax and individual nanofiller-added membranes. In this study, the combination of 2D MXene and UiO-66 nanoparticles exerted a synergistic effect in improving the CO2 separation efficiency of MMMs. This research provides a novel route for fabricating high-performance MMMs in the separation of CO2.

Social Entrepreneurship: Toward Understanding an Emerging Force for the Common Good

Social entrepreneurship combines business innovation with an explicit purpose of positive social and environmental impact, becoming increasingly relevant for analysis from various perspectives. This article presents a systematic review of the literature on social entrepreneurship, aiming to consolidate existing knowledge, identify emerging trends and gaps, and provide an updated guide for researchers and policymakers. The results reveal diverse methodological perspectives, ranging from quantitative research on economic impact and poverty reduction to ethnographies that explore the experiences and strategies of social entrepreneurs. The unique potential of social entrepreneurship to address global challenges is highlighted, necessitating comprehensive strategies to promote it sustainably. Furthermore, education is identified as a fundamental pillar of positive social change due to its role in developing professionals with an entrepreneurial mindset oriented toward social transformation. Finally, the paper emphasizes the need to diversify research lines and initiatives that encourage social impact entrepreneurship in a proactive and innovative manner. Received: 3 January 2024 / Accepted: 25 April 2024 / Published: 5 May 2024

Utilizing Ant Forest technology to foster sustainable behaviors: A novel approach towards environmental conservation

Amidst mounting environmental threats and exacerbated global risks from climate change, the urgency for sustainable behaviors has never been more critical, demanding concerted efforts to cultivate individual actions for environmental conservation. Ant Forest technology, a groundbreaking innovation for sustainable lifestyles, stands at the forefront of this battle, harnessing technological advancements to drive positive environmental impact and must be championed. This research investigates the dynamics of environmental conservation behaviors facilitated by Ant Forest Technology. Employing a theoretical framework integrating the Technology Acceptance Model (TAM) and Self-Determination Theory (SDT), the study explores the impact of autonomous and controlled motivation on attitudes, intentions, and conservation behaviors. Furthermore, the research assesses the influence of knowledge disseminated through Ant Forest Technology on users' intentions and behavior toward conservation behaviors. The study utilized the partial least square structural equation modeling in its analysis. Findings reveal that both motivational factors and knowledge significantly shape users' engagement in conservation behaviors activities through perceived ease of use and usefulness. These insights contribute to the development of effective policies and interventions aimed at harnessing Ant Forest Technology as a powerful tool for fostering widespread environmental conservation behaviors.

A Life Cycle Assessment of Methane Slip in Biogas Upgrading Based on Permeable Membrane Technology with Variable Methane Concentration in Raw Biogas

While energy-related sectors remain significant contributors to greenhouse gas (GHG) emissions, biogas production from waste through anaerobic digestion (AD) helps to increase renewable energy production. The biogas production players focus efforts on optimising the AD process to maximise the methane content in biogas, improving known technologies for biogas production and applying newly invented ones: H2 addition technology, high-pressure anaerobic digestion technology, bioelectrochemical technology, the addition of additives, and others. Though increased methane concentration in biogas gives benefits, biogas upgrading still needs to reach a much higher methane concentration to replace natural gas. There are many biogas upgrading technologies, but almost any has methane slip. This research conducted a life cycle assessment (LCA) on membrane-based biogas upgrading technology, evaluating biomethane production from biogas with variable methane concentrations. The results showed that the increase in methane concentration in the biogas slightly increases the specific electricity consumption for biogas treatment, but heightens methane slip with off-gas in the biogas upgrading unit. However, the LCA analysis showed a positive environmental impact for treating biogas with increasing methane concentrations. This way, the LCA analysis gave a broader comprehension of the environmental impact of biogas upgrading technology on GHG emissions and offered valuable insights into the environmental implications of biomethane production.

A COP28 Perspective: Does Chinese Investment and Fintech Help to Achieve the SDGs of African Economies?

Scientific consensus affirms human activity, particularly carbon emissions from market participants, drives global warming. Foreign investment, crucial for sustainability in developing nations, now faces scrutiny regarding its impact on environmental quality in emerging economies. This study examines the influence of Chinese Outward Foreign Direct Investment (OFDI) and fintech on environmental conditions in the top five Chinese-invested African economies, alongside factors such as energy consumption, economic performance, and unemployment affecting CO2 pollution. Quarterly data from 2006–2021 confirm cointegration among variables via panel unit root and cointegration tests. Panel ARDL method estimates coefficients for short and long-run effects. Our findings reveal: (1) A 1% increase in Chinese investment leads to a 0.56% decrease in CO2 emissions, supporting its positive environmental impact. (2) Fintech adoption also demonstrates a beneficial effect, with a 1% increase associated with a 0.18% reduction in CO2 levels. (3) Total energy consumption, as expected, has a detrimental impact, causing a 0.92% increase in CO2 emissions with a 1% rise. (4) Interestingly, economic growth fosters environmental sustainability, while unemployment correlates negatively with it. These findings suggest that targeted Chinese investments and fintech adoption can aid in mitigating CO2 pollution in African economies while balancing economic considerations.

Autochthonous Wheat Grown in Organic and Conventional Systems: Nutritional Quality of Flour and Bread.

A growing interest in the recovery and enhancement of crops, particularly local varieties such as 'Caaveiro' wheat, has been observed. This study aims to investigate the impact of cultivation systems (organic versus conventional) on the nutritional quality of 'Caaveiro' flour and breads protected by the PGI "Pan Galego," employing two fermentation methods (sourdough versus sourdough and biological yeast). Organic flour exhibited significantly higher levels of moisture, fat, sucrose, phosphorus (P), sodium (Na), and copper (Cu) while also exhibiting a lower total starch and zinc (Zn) content. Organic bread, produced using both fermentation methods, demonstrated significantly higher protein, carbohydrate, total, resistant, and rapidly digestible starch, ash, Na, P, iron (Fe), and Cu content. Additionally, they contained less moisture compared to conventional bread. Despite variations in nutritional characteristics based on the cultivation system, the organic approach proved effective at producing high-quality products with a positive environmental impact, which is highly appreciated by consumers.

Energy and Environmental Assessment of Bacteria-Inoculated Mineral Fertilizer Used in Spring Barley Cultivation Technologies

In the scientific literature there is a lack of information on the integrated effect of bioenriched complex mineral fertilizers in the energy and environmental aspects of spring barley production technology. The aim of this study was to validate the type of phosphorus-releasing bacteria and to carry out an energy and environmental assessment of the use of mineral fertilizers enriched with them for barley fertilization. The experimental field studies (2020–2022) were carried out in open ground on sandy loam soil in southern Lithuania. Four barley cultivation technologies (SC) were applied. Control (SC–1) did not use complex mineral fertilizers; in SC–2, 300 kg ha−1 of N5P20.5K36 fertilizer was applied. In SC–3, the same fertilizer was enriched with a bacterial inoculant (Paenibacillus azotofixans, Bacillus megaterium, Bacillus mucilaginosus, and Bacillus mycoides) at a rate of 150 kg ha−1, and in SC–4, 300 kg ha−1 of N5P20.5K36 fertilizer were applied and the same enrichment with the bacterial inoculant was carried out. The results confirmed the hypothesis that spring barley cultivation technologies using bacterial inoculants (SC–3 and SC–4) have higher mineral fertilizer efficiency than SC–2. In all three years, the bacterial inoculant had a positive effect on phosphorus fertilizer efficiency. In SC–4 (2020) it was 8%, in 2021—7%, and in 2022—even 17% higher compared to SC–2. In terms of energy balance, a significant influence of the bacterial inoculant was found. In 2020 and 2021, the energy balance of SC–4 was 10%, and in 2022, 22.8% higher compared to SC–2. The increase in fertilizer use efficiency resulted in a positive environmental impact, with greenhouse gas (GHG) emissions decreasing by 10% in 2020, 15% in 2021, and 19% in 2022 when comparing SC–4 and SC–2. The use of the tested bacterial formulations, without changing the mineral fertilizer rate, can lead to an average reduction in GHG emissions of about 15%. This study demonstrates that enriching mineral fertilizers with specific bacterial inoculants for spring barley cultivation significantly enhances phosphorus efficiency, improves energy balance, and reduces greenhouse gas emissions, underscoring the potential for bioaugmented fertilizers to optimize agricultural sustainability.

Enhancing consumer purchase intentions for sustainable packaging products: An in-depth analysis of key determinants and strategic insights

Environmental concerns drive corporate and consumer focus on sustainable packaging. Research explores key factors influencing consumer intent, emphasizing the importance of strategic integration for enhanced purchase intentions and environmental goals. A comprehensive literature review identifies factors such as perceived value, willingness to pay, environmental concern, and attitude toward sustainable packaging. Empirical validation using survey data demonstrates the statistical significance of these factors on consumer purchase intentions, with the willingness to pay to emerge as the most influential determinant. Stakeholders are urged to incorporate these findings into strategies for sustainable packaging, fostering positive environmental impact, and informing academic and managerial discussions.

UNSATURATED POLYESTER RESIN BASED COMPOSITES: A CASE STUDY OF LIGNIN VALORISATION

Materials from green resources boast a low carbon footprint, forming the foundation of the circular economy approach in materials science. Thus, in this study, waste poly(ethylene terephthalate) (PET) was subjected to depolymerization using propylene glycol (PG), and subsequent polycondensation with bio-based maleic anhydride (MA) produced unsaturated polyester resin (b-UPR). Bio-derived acryloyl-modified Kraft lignin (KfL-A) served as a vinyl reactive filler in the b-UPR matrix to create b-UPR/KfL-A composites. The structural characterization of KfL-A and b-UPR involved the use of FTIR and NMR techniques. The mechanical properties of the newly fabricated composites were assessed through tensile strength, Vickers microhardness, and dynamic mechanical tests. The addition of KfL-A to the rigid b-UPR matrix enhanced material flexibility, resulting in less stiff and hard materials while preserving composite toughness. For instance, incorporating 10 wt.% of KfL-A in b-UPR led to a 17% reduction in hardness, a 48% decrease in tensile strength, and a 20% reduction in toughness. Positive environmental impact was achieved by incorporation of 64 wt.% of renewable and recycled raw material. Analogously prepared b-UPR/KfL composites showed structural inhomogeneity and somewhat better mechanical properties. Transmission (TEM) and scanning (SEM) electron microscopies revealed a suitable relationship between mechanical and structural properties of composites in relation to the extent of KfL-A addition. The UL94V flammability rating confirmed that flame resistance increased proportionally with the KfL-A addition. Once deposited in a landfill, these composites are expected to disintegrate more easily than PET, causing less harm to the environment and contributing to sustainability in the plastics cycle.

Analyzing the impact of eco-friendly bonds on economic growth and environmental sustainability

In recent decades, a noticeable uptick has been seen in the issuing of eco-friendly bonds across green, social, and sustainable categories. The study examines their intersection with economic expansion and sustainability using panel data from 82 countries analyzed through robust fixed-effects estimators. The results reveal a significant positive correlation between the issuing of eco-friendly bonds and economic growth. Interestingly, a negative relationship emerges between bond performance and growth, suggesting that the mere issuing of bonds may not be enough to ensure sustainable economic expansion. The importance of refined valuation methods for these bonds is emphasized, along with the risk of economic imbalance caused by the uneven distribution of bond investments across sectors, akin to the "Dutch disease." The need to align investment strategies with both economic and environmental objectives to address challenges like persistent carbon emissions is also stressed. The authors advocate the integrating of considerations of bond issuance and performance into long-term sustainability strategies. Despite holding potential for positive environmental impact, eco-friendly bonds may not consistently drive economic growth as initially anticipated, particularly when balancing the development and carbon-reduction objectives.

Communication strategies for effective CSR and stakeholder engagement in the oil & gas industry: A conceptual analysis

This conceptual analysis explores communication strategies for effective Corporate Social Responsibility (CSR) and stakeholder engagement in the oil and gas industry. The oil and gas sector faces increasing scrutiny from stakeholders, including communities, governments, NGOs, and investors, regarding its social and environmental impact. Effective communication is crucial for companies to build trust, manage expectations, and demonstrate their commitment to CSR. The analysis discusses key communication strategies that companies can employ to enhance CSR and stakeholder engagement. These strategies include transparency, dialogue, collaboration, and storytelling. Transparency involves providing clear and accurate information about the company's CSR initiatives, performance, and impact. Dialogue involves engaging with stakeholders to understand their concerns, gather feedback, and address issues. Collaboration involves partnering with stakeholders to co-create solutions and maximize the impact of CSR initiatives. Storytelling involves sharing compelling narratives about the company's CSR efforts to inspire stakeholders and build a positive reputation. The analysis also highlights the importance of tailoring communication strategies to the specific context of the oil and gas industry. This includes addressing the unique challenges and sensitivities associated with oil and gas operations, such as environmental risks, community impacts, and regulatory complexities. Overall, the analysis emphasizes the importance of communication in driving effective CSR and stakeholder engagement in the oil and gas industry. Companies that adopt transparent, dialogue-driven, collaborative, and storytelling-based communication strategies are more likely to build trust, enhance their reputation, and create positive social and environmental impact.

Анализ факторов, определяющих величину экологического воздействия сельскохозяйственного производства на земельные ресурсы

Abstract. The purpose is to assess the impact of factors determining the magnitude of the environmental impact of agricultural production on land resources. Methodology and methods. In the course of the study, nonparametric statistical methods were used to identify dependencies in the data set. When constructing predictive models, ROC-analysis was used to find the values of the cut-off point. Results. The study made it possible to localize three groups of regions of the Russian Federation that differ quite significantly in terms of the environmental impact of agricultural production on land resources and are characterized by a high level of dispersion within the groups. The analysis of the interrelations between the parameters characterizing the level of environmental impact made it possible to identify factors that have a decisive influence on the indicators of reproduction of land fertility. In regions with a high negative environmental impact, only the yield value is crucial, the growth of which leads to an increase in the uncompensated removal of soil fertility elements, and, accordingly, to the progression of land degradation. In regions with an average level of negative environmental impact, its magnitude also depends on the amount of organic fertilizers applied, which forms a less high level of uncompensated removal of soil fertility elements and, accordingly, environmental damage in the regions included in this group. In the group with a positive environmental impact, it is the level of application of organic fertilizers that has a decisive influence on the reproduction of land fertility. The regression analysis showed that when approximating the values of the positive environmental impact on land resources, the amount of organic fertilizers can be the most reasonable variable. ROC-analysis regarding the application of organic fertilizers for grain crops as a potential predictive parameter of positive environmental impact showed that its threshold value at the cut-off point is 2.56 tons per 1 ha. The scientific novelty lies in the formation of the evidence base of the dependence of land fertility on the parameters of agroecological impact necessary to understand the mechanisms of building a system of rational land use in agriculture.

Eco-efficiency and economic assessment of gypsum-based precast with polymeric waste: A case study

The adoption of sustainable building policies and the society’s increasing emphasis on sustainability underscore the urgent need to evaluate the environmental and economic impact of construction materials. This study examines the effects of incorporating polyurethane foam waste into gypsum-based ceiling tiles. It compares its economic performance and eco-efficiency with conventional alternatives. Methodologically, Life Cycle Cost Analysis (LCCA) quantifies total life cycle costs, followed by Eco-Efficiency Assessment (EE), considering results from both Life Cycle Assessment (LCA) and LCCA. Our findings reveal a compelling 5.91% cost advantage for the novel precast, driven by enhanced production capacity resulting from shorter drying times. The economic benefits of this approach are underscored by a detailed breakdown of cost savings in production phases. Furthermore, the EE remarks a substantial 7.5% boost, emphasizing the positive environmental impact achieved through reduced resource consumption and lower emissions combined with lower life-cycle costs. These results highlight the economic viability and eco-efficiency of polymeric waste-integrated gypsum ceiling tiles for environmental sustainability. The specific percentage improvements in cost and eco-efficiency provide a quantitative basis for understanding the advantages of adopting these innovative materials.

Evaluating the Role of Sustainable Leadership and Technology Integration in Enhancing the Environmental and Social Responsibility of the UAE Banking Sector

This paper analyzes the role of sustainable leadership and technology integration in increasing the environmental and social responsibility of the UAE banking sector. Banks are prominent agents in creating sustainability through their financing activities and processes. Sustainable leadership is more than pursuing profit motives; it includes moral and inclusive decision-making for positive environmental and social impact. Sustainable leadership and enabling technologies contribute to a bank's sustainability indicators. A qualitative literature review combined the scholarly views in this field. Twenty recent peer-reviewed papers were thematically analyzed. This revealed how sustainable bank leaders adopt collaborative approaches involving stakeholders in creating sustainability solutions. Their values-based leadership focuses on long-term impacts and integrating environmental and social factors in bank strategies. Sustainability technologies like AI, big data and blockchain offer tools to implement these strategies. The analysis found that technology aids sustainable leaders in improving banks' eco-efficiency, reducing emissions, managing risks, increasing renewable financing and enabling financial inclusion. This enhances their environmental and social responsibility. Stakeholders like customers, employees and investors generally favour such sustainability integration. However, concerns exist around potential tradeoffs, profitability impacts and the depth of banks' commitment. The review also uncovered implementation challenges, including costs, data deficiencies, staff capabilities and cultural change. Smaller banks significantly lag more prominent entities. Radical strategic realignment rather than incremental changes is required. Public policy plays a crucial role through reporting requirements, emission limits and support frameworks. The limitations of this qualitative synthesis point to future research directions. Statistical meta-analyses could increase the generalizability of findings. Surveys and interviews with experts would provide rich primary data. Comparative analyses of technologies and leadership styles driving the most robust sustainability results would reveal best practices. Longitudinal studies can elucidate the evolution of banks' sustainability approaches over time. In-depth case studies of smaller banks would uncover constraints and potential solutions for mainstreaming sustainability. Action research pilots can test mechanisms to instil sustainable leadership thinking. Policy analyses can identify regulatory measures to accelerate progress. In conclusion, sustainable leadership and technology integration are essential enablers, but not guarantees, of elevating bank sustainability. Realizing their transformative potential requires bank leaders to move from rhetoric to resolute, broad-based action. This necessitates radical strategic reorientation, not just incremental improvements. Multi-stakeholder collaboration is vital, alongside supportive public policies and ongoing research. Sustainable leadership and technologies must remain central in catalyzing a systemic transition towards responsible banking aligned with urgent sustainability imperatives.

Sustainable innovations, knowledge and the role of proximity: A systematic literature review

AbstractInnovations can substantially contribute to the transformation toward sustainability if they induce a positive social and/or environmental impact. Such sustainable innovations differ considerably from conventional, purely economic innovations. The main difference stems from the different knowledge bases necessary for the development of these innovations. These knowledge bases are widely dispersed across different actors from business, academia, government, and civil society. Following the innovation system approach, we look at actor constellations, linkages between actors, and knowledge flows within networks that generate sustainable innovations. For this purpose, we conduct a systematic literature review, focusing on the concept of proximity and its five dimensions (geographical, cognitive, institutional, organizational, and social proximity). The results show that all proximity dimensions, as well as the interdependencies between them, are relevant for analyzing knowledge flows leading to sustainable innovations. The interplay of the different proximity dimensions can be described via two mechanisms, one being reinforcement and the other one being either substitution or overlap. We conclude that for the occurrence of radical, systemic innovations, which have the potential of altering the prevailing socio‐economic paradigm toward greater sustainability, a combination of low cognitive and low (micro‐) institutional proximity combined with high organizational, social, or geographical proximity, appears particularly conducive.

Artificial Intelligence in ESG investing: Enhancing portfolio management and performance

Artificial Intelligence (AI) has emerged as a transformative force in Environmental, Social, and Governance (ESG) investing, significantly enhancing portfolio management and performance. This paper investigates the integration of AI technologies within ESG investment strategies, elucidating their profound impact on decision-making processes and financial outcomes. By leveraging advanced data analytics and machine learning algorithms, AI empowers investors to analyze extensive ESG-related datasets, extract actionable insights, and identify investment opportunities aligned with sustainability objectives. The application of AI-driven ESG analysis enables investors to construct well-structured portfolios that not only aim for financial success but also adhere to ethical and sustainable principles. Through the utilization of AI, investors can systematically evaluate the environmental impact, social responsibility, and corporate governance practices of potential investments. This approach facilitates the identification of ESG risks and opportunities with greater precision and efficiency, leading to more informed investment decisions. Moreover, AI enables investors to dynamically adjust their portfolios in response to changing market conditions and emerging sustainability trends. By continuously monitoring ESG factors and leveraging predictive analytics, investors can proactively manage risks and seize opportunities to enhance portfolio performance over the long term. This proactive approach not only mitigates potential ESG-related risks but also positions investors to capitalize on emerging market trends and shifts in consumer preferences. Furthermore, the integration of AI in ESG investing fosters transparency, accountability, and stakeholder engagement within the investment ecosystem. AI-powered tools facilitate the dissemination of ESG-related information, enabling investors to make informed decisions that align with their values and sustainability goals. By harnessing the capabilities of AI, investors can drive positive environmental and social impact while achieving competitive financial returns. In conclusion, the utilization of AI in ESG investing represents a paradigm shift in portfolio management, offering investors unprecedented opportunities to navigate complex ESG challenges and achieve sustainable financial success.

Appropriate Trees along the Elevated Railway in Lamphun City, Thailand

Thailand's Ministry of Transport aims to elevate the Den Chai-Chiang Mai double-track railway at Lamphun's Mueang Nga intersection, impacting the city's physical characteristics. This research focuses on harmonizing the large elevated railway with Lamphun's urban landscape and environment. Analyzing perspectives and considering perennial plant species selection, the study enhances visual aesthetics, shading, dust filtration, and heat reduction. Methodologically, it involves summarizing suitable plant information, simulating images with SketchUp, and analyzing before-and-after perspectives. Findings emphasize trees' positive environmental impact, recommending local species like the Cassia and symbolic species like the Thong Kwao for their adaptability and low maintenance.

Characteristics of the leaders of social and environmental enterprises in Latin America and the relationship with the success of their businessesCaracterísticas de los líderes de emprendimientos sociales y ambientales en América Latina y la relación con el éxito de sus negociosCaracterísticas dos líderes de empreendedorismos sociais e ambientais em América Latina e a relação com o sucesso de seus negócios

Purpose This study aims to understand the leadership characteristics of founders of social and environmental enterprises in Latin America who have achieved business success with a focus on sustainability despite difficult social, economic, political and even health contexts in which they live. Design/methodology/approach This nonexperimental research is a qualitative, descriptive and exploratory study. Twenty-one in-depth interviews were conducted with social/environmental entrepreneurs of the Kunan Network (an organization that groups the entrepreneurial ecosystem in Peru). Findings The study analyzes the leadership profile and characteristics of entrepreneurs who have created profitable businesses with a social/environmental focus that solve relevant social problems and contribute to improving people’s quality of life and caring for the environment. Research limitations/implications Although only 21 business leaders with outstanding participation and positive social and environmental impact were included in this study, they were supported and recognized by the Kunan Network. Originality/value The study contributed to the conceptualization and understanding of the profile of leaders of social and environmental enterprises, whose main challenges are to solve social or environmental problems of society and contribute to improving the quality of life of people and the environment. Knowing the profile of these entrepreneurs generates value to the knowledge of the subject and contributes to understand and propose strategies to improve the ecosystem of social-environmental entrepreneurship in emerging countries such as Peru. This will contribute to the creation of relationships and alliances with various social actors: public, private, third sector, academia, among others, for the management and promotion of sustainable business.

Building a sustainable future: The role of additive manufacturing in civil construction

With the advent of Industry 4.0, 3D printing is emerging as a revolutionary technology in various industrial sectors. The ability to gradually deposit material allows the creation of complex shapes without waste and the need for molds. This, coupled with cost reduction, opens up significant opportunities in the construction sector. To minimize waste on the construction site, optimize construction time, and positively contribute to the environment, this work focuses on developing a system capable of three-dimensional printing of objects composed of a desktop-scale 3D printer prototype. The 3D printer developed in this project is integrated with two other crucial subsystems. The first is responsible for extruding a cementitious composite, while the second performs the homogenization of the mixture during material preparation. The Cartesian robot, essential for 3D printing, was constructed based on mechanical and electrical designs and connected to the pumping subsystem via a 1⁄2-inch diameter hose. To ensure the system's viability, it was essential to define flow and printing speed parameters to ensure the extrudability and constructibility of composite materials. The process included preparing a conventional mortar with mixing ratios of 1:0.33:1.33:0.01 (cement, water, sand, and superplasticizer additive). The pumping subsystem was calibrated through flow tests on the injection pump, resulting in mass flows of 4 and 5 Kg/min. Printing speeds on the Cartesian robot were parameterized at 10, 30, and 50 mm/s. This led to the creation of samples named AE1 – 10, AE1 – 30, AE1 – 50 mm/s (for a flow rate of 5 Kg/min) and AE2 – 30, AE2 – 50 mm/s (for a flow rate of 4 Kg/min), along with AR – 1 and AR – 2 samples, which were collected in the mixer without extrusion. The system's validation involved printing an object with dimensions of 400 ×400×80 mm (length x width x height). After printing, the object's measurements were analyzed to assess the cementitious material's extrudability and the constructibility of the layers. Tests were conducted in the fresh and hardened states of the mortar, including measurements of consistency index and tensile and compressive strength. The results demonstrated that replacing traditional methods with 3D printing on the construction site is feasible, reducing waste and decreasing construction time. This directly contributes to a cleaner and more sustainable construction process. 3D printing represents a promising innovation in the construction sector, offering significant advantages in terms of efficiency, waste reduction, and positive environmental impact. This work demonstrates the viability of this technology and its potential to transform the construction industry toward more sustainable and effective practices.