Stringent Environmental Regulations Research Articles

Synergistic susceptibility to environmental lead toxicity in chronic kidney disease.

While high levels of lead exposure, as occurs accidentally or occupationally, can cause toxicity across multiple organ systems, the hazard of commonly encountered levels of lead in the environment remains unresolved. Challenges to researching the health effects of lead include its complex interplay with renal function, rendering analyses at risk of unaccounted confounding, and the likely small effect size of environmental levels of exposure. While children are known to be disproportionately susceptible to lead toxicity, resulting in appropriately more stringent regulatory surveillance for those under 5 years old, emerging evidence suggests that those with chronic kidney disease (CKD) similarly are at a greater risk. This review summarizes the role of environmental lead toxicity as a potential cause and consequence of CKD. Whether environmental lead exposure causes CKD remains debatable, with little recent research advancing the conflicting, mostly cross-sectional, analyses from years ago. However, an emerging body of evidence suggests that CKD increases the susceptibility to lead toxicity. Higher circulating lead levels and lower urinary excretion result in greater lead accumulation in CKD, with simultaneous greater risk of clinically meaningful disease. Recent studies suggest that levels of lead found commonly in the United States drinking water supply, and currently permissible by the Environmental Protection Agency, associate with hematologic toxicity in those with advanced CKD. Whether environmental lead contamination may have additional negative health impact among this at-risk population, including cardiovascular and neurocognitive disease, warrants further study. The underlying pathophysiology of kidney disease synergizes the susceptibility to environmental lead toxicity for those with CKD. Low levels of exposure, as found commonly in the United States water supply, may have adverse health impact in CKD. Further research will be needed to determine if more stringent environmental regulations are warranted to protect the health of all.

Digital infrastructure expansion and carbon intensity of small enterprises: Evidence from China

While the growth of digital infrastructure theoretically offers increased opportunities for enterprises, the policy implications may vary depending on the firm size. We utilize the pilot policy of the Broadband China Strategy as an exogenous shock for firms and adopt a unique dataset from the National Tax Survey to investigate the impact of digital infrastructure expansion on the carbon intensity of small enterprises. The results indicate that digital infrastructure expansion leads to a notable increase of 9.04% in small firm's carbon intensity. These results exhibit resilience, withstanding rigorous testing through various robustness checks. This increase is primarily attributed to two channels: the competition effect, which results in a decline in small firm's output, and the change in energy structure, which leads to an increase in small firm's carbon emissions. Heterogeneity analysis reveals a more pronounced increase for small enterprises located in regions with less stringent environmental regulations and in industries with higher degree of market concentration. Our conclusion suggests that the government should pay attention to the survival and development of small enterprises. This entails ensuring fair market competition on digital platforms and preventing the dominant enterprises from abusing their information advantages to jeopardize the interests of small enterprises.

The Impact of Firm Technology on Carbon Disclosure: The Critical Role of Stakeholder Pressure

AbstractThe demand for transparency about the microeconomic sources of environmental pollution has surged recently, causing carbon disclosure to rise to the top of the global climate change discourse. In this study, we empirically investigate how the environmental performance of firm production technologies shapes their voluntary carbon disclosure behaviour and how key stakeholders influence the performance‐disclosure relationship. Using a panel of 1,547 firms across 24 countries covering 2006–20, we find that firms with the most efficient technologies for reducing emissions tend to disclose their carbon impact, especially when they face more stringent environmental regulations. These high‐performing firms demonstrate a tendency for non‐disclosure when faced with intense shareholder and environmental activist pushback against pollution. Our findings also highlight the existence of a profitability penalty for transparent high‐efficiency firms relative to comparable firms that adopt strategic silence.

Greening the Economy from the Ground Up: How the Minimum Wage Affects Firms’ Pollution Emissions in China

The implications of minimum wage standards have been widely debated, but their effects on firms’ pollution emissions and the underlying mechanisms remain underexplored. This paper finds that the introduction of minimum wage standards significantly reduces emissions of pollutants such as carbon dioxide and sulfur dioxide. Firms respond to rising minimum wages by optimizing their product mix, enhancing technological innovation, and improving managerial efficiency, which collectively curb pollution outputs. Our analysis using a random forest model shows that these effects are most pronounced in regions with higher economic development, stringent environmental regulations, and elevated minimum wage standards. Our findings augment the body of research on minimum wage standards and introduce novel insights for emission reduction strategies for firms.

Mitigating excessive financialization or promoting innovation? Productivity effects of China's carbon emission trading scheme

AbstractThe success of the carbon emissions trading scheme (ETS) in fostering a mutually beneficial outcome for both the economy and the environment depends on its ability to enhance total factor productivity (TFP). We investigate the diverse implementation of this market‐based environmental policy across Chinese provinces using a staggered Difference‐in‐Differences model. Our study delves into the mechanisms of the ETS, particularly focusing on financialization and innovation, utilizing listed companies in Chinese stock markets as our research sample spanning from 2009 to 2022. Our analysis shows several key findings: (1) ETS facilitates the growth of TFP in micro‐firms, positively influencing other listed companies within the same sector and city. However, its impact on TFP is notably weaker in regions with robust environmental information disclosure and stringent environmental regulations. (2) The ETS helps alleviate resource misallocation stemming from excessive financialization of firms, prompting them to reallocate investments from financing activities to production and operation activities, thus enhancing TFP. (3) Contrary to expectations, the ETS does not directly influence TFP through enhancing firm innovation ability; instead, it encourages directed technical innovation toward green technology over digital technology. This study highlights the effectiveness of the ETS in promoting firm development and sheds light on resource management practices within firms.

Investigation of the causality between participation in global value chains and CO2 emissions between developed and developing countries

The production and consumption activities are cross-border and therefore, it is important to understand the role of Global Value Chains (GVCs) in fulfilling a country’s specific climate commitments. This study examines the causal relationship between selected GVC indices and CO2 emissions. We use the GVC position index, considered robust in comparison to the frequently used GVC participation index, for determining the impact on emissions. The forward and backward participation indices are considered in the analysis. The paper presents an analysis of 62 developing and developed economies from 1995 to –2018 using the Juodis A., Y. Karavias, and V. Sarafidis [2021. “A Homogeneous Approach to Testing for Granger non-Causality in Heterogeneous Panels.” Empirical Economics 60 (1): 93–112] approach, which is an improvement over the traditional approaches to analysing causality. The results show that the overall position in GVCs positively affects CO2 emissions for developing countries but a causal relationship does not exist for the developed countries. The developed countries attain a higher participation index but a lower position index. On the other hand, developing countries with fewer stringent environmental regulations may opt for an upstream position (more export-oriented) and by design specialize in more pollution-intensive industries. Noteworthy, production-based emissions in developed countries are reduced because of an increase in imports of emission-intensive products from developing countries.

Operationalizing the Circular Economy—A Longitudinal Study on Sustained Circular Action

Circularity is becoming increasingly important for Distribution System Operators (DSOs) as their infrastructure ages and needs replacement, alongside compliance with stringent environmental regulations like the Corporate Sustainability Reporting Directive (CSRD). However, implementing circular economy (CE) practices is challenging due to the fragmented nature of the current CE landscape and its limited interaction with practical application. A longitudinal case study at the Dutch DSO, Liander, focusing on the circularity of distribution transformers, was conducted to generate prescriptive knowledge on operationalizing circularity. This resulted in the formulation of six design propositions for circular action that suggest to (1) initiate small-scale circularity experiments; (2) involve technical and strategic experts; (3) synergize circularity with more urgent, primary goals; (4) translate circular initiatives bottom-up and top-down; (5) collaborate with other DSOs; and (6) create multidisciplinary teams. The propositions suggest to situationally select interventions and build upon the outcomes of previous interventions in order to incrementally contribute to circular change. Other DSOs could use these propositions to optimize their strategy toward circular action. Additionally, the findings contribute to advancing scientific knowledge to implementable actions in order to initiate and sustain circular change.

The Proof Dilemma of Porter’s Hypothesis: Analysis of Its Verification Difficulties

The Porter Hypothesis, proposed by Michael E. Porter, suggests that stringent environmental regulations can enhance corporate innovation and competitiveness, challenging the traditional view that regulations increase business costs. It argues that regulations motivate firms to innovate, leading to improved productivity, cost reductions, and new market opportunities. However, there are proponents and critics in academia regarding the hypothesis. Supporters claim regulations change corporate behavior, reducing agency costs and boosting research and development. Critics argue that if win-win situations exist, businesses would naturally pursue them without regulatory incentives. Key challenges in proving or refuting the hypothesis include its various versions, the difficulty in quantifying innovation and competitiveness, the complex interplay between regulation, innovation, and competitiveness, and the varying impacts across industries and regions. Additionally, the effects may require a long time to manifest, and the hypothesis’s applicability is influenced by evolving environmental policies and market environments. Despite mixed empirical findings, the Porter Hypothesis provides a valuable framework for understanding the relationships among environmental regulation, innovation, and competitiveness, but its validation requires a more comprehensive assessment.

Environmental regulation and enterprise behavior in China: rent-seeking or innovation?

While the Porter hypothesis posits that well-functioning markets and government regulations can promote enterprise innovation, it remains less clear in developing and transition economies. To address this gap, we utilize enterprise data from China’s A-share market between 2005 and 2017 to empirically examine whether implementing more stringent environmental regulation will prompt regulated enterprises to engage in rent-seeking or innovative behavior. Our findings reveal that regulated enterprises increase both their rent-seeking and innovation efforts in response to environmental regulation. Importantly, enterprises exhibiting lower levels of rent-seeking demonstrate more substantial increases in rent-seeking expenditure when confronting environmental regulation. Furthermore, we discover that state-owned enterprises are more inclined to implement innovative behaviors, while foreign enterprises significantly reduce their innovative activities. This study highlights the complex relationship between environmental regulation and enterprise behavior in developing or transition economies.

Eco-friendly corrosion inhibition of steel in acid pickling using Prunus domestica Seeds and Okra stems extracts

The corrosion inhibition process during acid pickling in petroleum industries often employs toxic chemicals, facing stringent environmental regulations. This study explores a sustainable alternative by investigating the inhibitory effects of eco-friendly food waste extracts, namely Prunus domestica seeds (P.S) and Okra stems (O.St), on B7 grade steel corrosion in 1.0 M HCl aqueous solution, simulating an acid pickling environment. The corrosion inhibition efficiency was estimated via both electrochemical methods, including electrochemical impedance spectroscopy and potentiodynamic polarization techniques, and chemical methods, such as weight loss measurements. Fourier transform infrared spectroscopy (FTIR) and Gas chromatography-mass spectrometry (GC-MS) elucidated the extracts' main functional groups and potential chemical constituents. Remarkably, both extracts exhibited a maximum inhibitory efficiency of up to 80 %. Adsorption isotherms were employed to analyze the inhibition mechanisms, including Langmuir and Flory–Huggins models, alongside the Kinetic-thermodynamic model. Activation parameters have been obtained using Arrhenius and transition state equations. The synthesis of the activated complex is characterized as an endothermic process, as evidenced by the positive values of enthalpy of activation (ΔH*). Conversely, negative entropy of activation (ΔS*) values indicate that the activated complex signifies a process of association rather than separation. Quantum chemical calculations identified potential active inhibitor compounds within the extracts. The quantum parameters, including ionization potential, electronegativity, softness, and hardness of the chemical constituents of the extracts, were calculated using DFT with the B3LYP/6–31 G(+) method. This study underscores the innovative approach of utilizing waste food extracts as corrosion inhibitors, addressing environmental concerns while offering practical implications for industrial applications.

Digital Finance and Corporate Environmental Violations

Using a sample of 1048 A-share listed firms for the period 2011–2020, we analyze the direct and indirect pathways through which digital finance shapes environmental governance mechanisms within corporations. Our findings reveal that digital finance mitigates environmental violations through information (internal control) and financial (environmental investment) mechanisms. The primary findings remain consistent after using battery of robustness tests. Moreover, the negative influence of digital finance on environmental violations is more pronounced for state-owned firms, heavy polluters, and firms operating in regions with stringent environmental regulations. Overall, this research contributes valuable insights into the firm-level consequences of digital finance integration and emphasizes the importance of robust regulatory frameworks for environmental sustainability in the digital age.

Efficient and promising oxidative desulfurization of fuel using Fenton like deep eutectic solvent

Oxidative desulfurization (ODS) has emerged as a prominent technique for the removal of sulfur compounds from fuels, aiming to comply with stringent environmental regulations and minimize sulfur dioxide emissions. Herein, Fenton-like deep eutectic solvents (DESs) were synthesized as a catalyst and reaction medium and their application for the ODS process was investigated. The study encompassed the optimization of DES composition, reaction conditions, and the influence of different parameters on the desulfurization efficiency. The experimental findings demonstrated that the Fenton-like DES exhibited outstanding catalytic activity in the oxidative desulfurization of fuel. The optimized conditions involved conducting the reaction at room temperature for 2.5 h, using 200 mg of the prepared DES (HNFM-FeCl4) as both the extraction solvent and catalyst. An oxidant-to-sulfur (O/S) ratio of approximately 3:1 was maintained, with a 30 wt% H2O2 solution utilized as the oxidant. The analysis of the reaction products using GC–MS revealed a remarkable yield of 98% for dibenzothiophene sulfone. The DES provided a suitable medium for the reaction, enhancing the solubility and availability of sulfur compounds. The iron catalyst, in the presence of hydrogen peroxide, facilitated the oxidation of sulfur-containing compounds to their corresponding sulfones, which can be easily separated from the fuel phase. The DES catalysts exhibited stability and recyclability, making them suitable for practical applications in fuel desulfurization processes.

Impact of Climate Change on the Environment: A Synthesis Study

Climate change has a significant impact on both physical and social components of the environment. Every component of the environment has been suffering the impacts of climate change. All components of the environment are interrelated through the exchanging of energy and matter; hence they actively interact. Major components of the environment like the biosphere, lithosphere, atmosphere, and hydrosphere are open systems to impact climate change. This paper describes the major impacts of climate change on major components of the environment. This study investigated the current state, wide-range global research trends, and different concerns on the impacts of climate change on the sustainable tourism. Global climate change represents a grand challenge for society, one that is increasingly influencing tourism sector investment, planning, operations, and demand. This study synthesized a total of 36 studies on climate change by sourcing published material from the review that was performed in indexed databases namely Dimensions, Web Science, Elsevier Scopus, and Google Scholar. Therefore, the study found that human beings are the major contributors to climate change through anthropogenic greenhouse gas emissions that worsened during the Green Revolution. Climate change outcomes through the loss of valuable ecosystem goods and services, degrading the most of keystone species sites. In other ways, loss of biodiversity, changes in atmospheric composition, changes in chemical reactions in soil, changes in water quality, availability, and hydrologic cycles, and frequent occurrence of extreme weather conditions. Of course! The effects of climate change are wide-ranging and diverse, impacting many areas and facets of daily life. Therefore, this study recommends implementing carbon pricing mechanisms to internalize the costs of greenhouse gas emissions and enforcing stringent environmental regulations and standards to limit emissions and pollution. Support global efforts and agreements to combat climate change, such as the Paris Agreement.

Systematic analysis of dual-functional catalysts for simultaneous CO-NOx reduction: Toward an effective catalyst design strategy

The development of a multifunctional catalyst suitable for application in existing facilities with limited space, with specific emphasis on its capability to concurrently remove CO and NOx is vital for meeting stringent environmental regulations. This is particularly pertinent to industries such as liquefied natural gas-based power plants and multipollutant-emitting industrial facilities. Another important consideration is that the catalyst should operate over a wide temperature range to facilitate its application across various industrial sites. In this study, we synthesized vanadium-based catalysts with a series of noble metals (Pt, Pd, and Au). The V–W–Pd/TiO2 catalyst achieved a simultaneous CO–NOx reduction efficiency greater than 90% in the widest temperature range, 228–321 °C. The excellent catalytic activities resulted from the Pd active sites, which oxidated CO and adsorbed NOx. This enables the catalyst to easily participate in the NH3-SCR reaction and facilitates NOx reduction. Moreover, we systematically analyzed the reaction properties of each catalyst using diffuse reflectance infrared Fourier transform and temperature programmed desorption methods. This enabled the elucidation of the reaction characteristics and competitive adsorption properties of the catalysts.

Nexus between Innovation–Openness–Natural Resources–Environmental Quality in N-11 Countries: What Is the Role of Environmental Tax?

This research investigates the intricate relationship between financial openness, natural resources, and carbon neutrality in the N-11 countries. It provides insights into how environmental tax and innovation can drive carbon neutrality in these nations, thus advancing our understanding of the nexus among financial openness, natural resources, and carbon neutrality. The study aims to offer policymakers perspectives on formulating policies to foster sustainable economic development and environmental conservation in the N-11 nations. The discourse highlights the environmental implications of foreign direct investment (FDI) and trade openness, revealing a complex interplay between economic development, technological innovation, and environmental sustainability. While FDI can facilitate technological transfers and managerial advancements that enhance resource efficiency and promote environmentally friendly practices, its environmental impact varies based on regulatory frameworks and enforcement mechanisms. In countries with weak environmental regulations, FDI may lead to negative outcomes such as pollution hotspots, resource depletion, and ecosystem degradation. Similarly, trade openness can exacerbate environmental degradation through increased production, energy consumption, and waste generation. However, both FDI and trade openness can contribute positively to environmental sustainability when coupled with effective environmental policies, investment in green technology, and the promotion of sustainable practices. Thus, policymakers must strike a balance between economic development and environmental protection by implementing stringent environmental regulations, promoting clean technology transfer, and fostering sustainable development practices domestically and internationally. This research offers valuable insights for policymakers aiming to navigate the complexities of achieving carbon neutrality while ensuring sustainable economic growth in the N-11 countries.

Circular economy and entrepreneurship in Europe: An analysis of the impact of cultural factors, regulatory framework and rate of entrepreneurship

The aim of this work is to delve into the phenomenon of the circular economy (CE) to enhance understanding of the contextual factors that foster its development. We study how countries’ cultural values, regulatory frameworks and rates of entrepreneurship, affect the transition to more circular economies. The model proposed and tested through a binomial logistic regression analysis of a sample of European small and medium-sized enterprises (SMEs), shows that such firms are more likely to adopt CE actions when located in more entrepreneurial societies, with more individualistic and feminine values, and with less stringent environmental regulations. Additionally, the study evidences a scale effect, but not an experience effect, in the transition to CE. Several practical and political implications are outlined.

Analysis of the relationship between carbon pricing and green innovation: A multidimensional study in 35 countries

Increased greenhouse gas emissions are the main cause of global warming, leading to effects such as rising sea levels, extreme weather events, and unprecedented species extinction. The 2015 Paris Agreement, with the participation of 195 countries, aimed to reduce CO₂e emissions and limit the increase in global temperature to 2 °C compared to pre-industrial levels. Academia, the World Bank, and the Organization for Economic Co-operation and Development emphasize CO₂e pricing as a crucial initiative to mitigate global warming and promote a low-carbon economy. This can be achieved through taxes on fossil fuel emissions or a carbon credit auction system such as the Emissions Trading System (ETS). However, complexity arises when considering cross-border pricing limitations and the concern that companies may relocate to countries with less stringent environmental regulations. Therefore, the objective of this study is to investigate the correlations between the 35 countries that have CO₂e pricing practices. Data and methods involved statistical analysis of three exogenous variables using SPSS software: a) countries' position in the Environmental Performance Index (EPI) ranking; b) historical number of green patents registered in these countries; and c) the number of scientific articles published with decarbonization as a central topic. The results suggest a virtuous cycle in these countries, where CO₂e pricing leads to an increase in green articles and patents, contributing to their improved position in the global EPI ranking. The main implications of this study are that achieving the objectives of the Paris Agreement will require a collective effort from all countries, and therefore, good practices must be encouraged and replicated. Meeting decarbonization targets necessitates structural changes, such as those in the current energy model. This virtuous cycle should be extended to other countries that do not yet practice CO₂e pricing to advance the goal of mitigating global warming and transitioning to a low-carbon economy.

Environmental regulation and productivity growth in the euro area: Testing the porter hypothesis

This paper examines the impact of changes in the stringency of environmental regulations on productivity growth. We exploit several data sources, including the OECD Environmental Policy Stringency Index and balance sheet information from ORBIS and iBACH, to test the Porter hypothesis, according to which firms’ productivity can benefit from more stringent environmental policies. We estimate the regulatory impact over a five-year horizon using panel local projections. To identify the direction of the effects, we estimate CO2 equivalent emissions for all firms in our sample using a machine learning algorithm. As suggested by the country-level analysis and confirmed by the firm-level analysis, policy tightening negatively affects productivity growth of high-polluting firms and to a larger extent than that of their low-polluting peers. Hence, we do not find support for the Porter hypothesis in general. However, not all policies have the same impact – non-market based policies are the most detrimental to productivity growth – and not all highly polluting firms are affected in the same way – the negative impact is mitigated for large firms, which may benefit from easier access to finance and greater innovativeness.

Treatment of oil sands process-affected water using a semi pilot-scale coalescing filter: Effect of fundamental conditions and water characteristics on filtration performance

The reuse of oil sands process-affected water (OSPW) generated during oil extraction is becoming essential due to oil extraction efficiency and stringent environmental regulations. This study investigates the efficacy of a coalescing filter (CF) in removing oil components from OSPW by exploiting coalescence, which involves merging small oil droplets into larger ones using fibers. Real-time, precise oil measurement systems were employed to evaluate the oil removal efficiency of the CF across synthetic OSPW samples with varying properties. Fundamental conditions and water quality components were systematically adjusted to elucidate the influencing factors on oil removal by the CF. Results showed that despite the diesel having significantly lower viscosity than the oil contents in OSPW, CF achieved a removal efficiency of over 60% within the first 10 min of operation time, regardless of oil concentration. Total suspended solids/turbidity exhibited a decreasing trend as it passed through the filter, indicating fouling occurring within the filter. On the other hands, its increase improved CF performance by 6% compared to baseline conditions, while an increase of alkalinity decreased performance by 10%. When each water quality component exists independently, they do not significantly impact the oil removal efficiency. However, when present together, there is a more decrease in removal efficiency due to the reduced interaction between oil and filter. CF was resistant to changes in water quality. Rather, changes in fundamental factors are more sensitive to CF performance. Filter characteristics and mechanisms make residence time the primary factor affecting oil removal by the CF, with variations exceeding 30% depending on conditions. Therefore, optimizing filter number and flow rate is essential to maximize the filtration performance.

Comprehensive Review on Technical Developments of Methanol-Fuel-Based Spark Ignition Engines to Improve the Performance, Combustion, and Emissions

Abstract Methanol (CH3OH) is emerging as a viable alternative to fossil-based fuels, addressing the increasing global energy demand while promoting sustainability. The spark ignition (SI) engines are widely used to run the automobile sector. Methanol as a widely available and cheap source of energy can be strongly replaced with expensive and limited fossil-based fuels to power the SI engines. The prime objective of this study is to evaluate the advancements made in improving the fuel blends, performance, combustion, and emission characteristics of methanol-fueled SI engines. The investigation commences by examining the various technical improvements implemented in methanol-fueled SI engines to optimize their overall performance. These developments include advancements in fuel blends, engine design, combustion strategies, fuel injection systems, ignition systems, engine load, etc. The impacts of these developments on the performance parameters including brake thermal efficiency, power output, torque, fuel efficiency, thermal efficiency, etc., combustion parameters including ignition delay, combustion duration, heat release rate, in-cylinder pressure and temperature, etc., emission parameters including hydrocarbon, carbon monoxide, nitrogen oxide, formaldehyde, unburned methanol, etc., is reviewed comprehensively. The effectiveness of emission control techniques and the potential for meeting stringent environmental regulations are explored. The review paper then considers the wider implications of methanol-fueled SI engines by examining their technical, environmental, economic, and renewable applications. The technical aspects cover the compatibility of methanol-fueled SI engines with existing infrastructure and the associated challenges and opportunities. The environmental considerations delve into the potential reduction of greenhouse gas emissions and the overall sustainability of methanol as a renewable fuel. Finally, the research direction of methanol SI engines is discussed, highlighting the emerging trends and prospects in this field. The review paper concludes with recommendations for further research and development, addressing the key areas that require attention to unlock the full potential of methanol as an efficient and sustainable fuel for SI engines.