Environmental Regulatory Agencies Research Articles

Analisis Putusan Pengadilan dalam Perkara Tindak Pidana Pencemaran Udara

Air pollution is one part of physical environmental pollution. Air pollution according to the Government Regulation on air pollution control is the entry or introduction of substances, energy, and/or other components into ambient air by human activities, so that the quality of ambient air decreases to a certain level that causes ambient air to be unable to fulfill its function. The research method used is to use a type of normative legal research method, by examining library materials or secondary data which include primary legal materials, secondary legal materials and tertiary legal materials using Decision Number 68/Pdt.G/LH/2022/PN Rap. The results of the study, namely the lawsuit was rejected by the Court and the impact was air pollution, namely respiratory disorders, cardiovascular disease, impaired fetal development, decreased lung function, and chronic diseases. Conclusion Air is very important because it provides oxygen and other gases that are essential for all life on earth. Air pollution or contamination is the introduction of other components into the air, either by human activities directly or indirectly or due to natural processes. The impacts of this pollution include respiratory disorders, cardiovascular disease, impaired fetal development, decreased lung function, and chronic diseases. Suggestions Palm oil mills need to adopt more effective pollution control technologies to reduce emissions of hazardous materials into the air. Local governments and environmental regulatory agencies must ensure that palm oil mills comply with all applicable environmental regulations and standards. Local communities must be empowered and educated about their rights and how to advocate for a healthy environment.

Digital transformation and synergistic reduction in pollution and carbon Emissions——An analysis from a dynamic capability perspective

Pollution control and carbon emission reduction pose significant challenges for developing countries, and achieving synergistic reductions in pollution and carbon emissions (SRPCs) has emerged as the optimal choice. Digitization, a prevailing trend in the current era, presents new opportunities for realizing the SRPC. We utilize data from Chinese A-share listed companies from 2007 to 2022 to investigate the impact of corporate digital transformation on the SRPC. The research reveals the following. (1) Enterprise digital transformation significantly promotes the SRPC, a conclusion validated through a series of robustness tests. However, the SRPC resulting from digital transformation is characterized by weak synergy, which is primarily observed in the coordinated reduction in air pollution and carbon emissions. (2) This effect is notably stronger for companies near environmental regulatory authorities, those receiving government environmental subsidies, and state-owned enterprises (SOEs). (3) Enhancing managerial collaborative management capabilities, promoting corporate technological innovation capabilities, and alleviating financing pressure are the primary mechanisms at play. This research provides important policy and practical insights for promoting the SRPC in the context of digitization, fostering sustainable development.

QUANTIFYING THE IMPACT OF TRAFFIC-RELATED EMISSIONS ON AIR QUALITY IN KANO CITY, NIGERIA

The aim of this study is to assess the concentration of traffic related air pollutants at some major traffic junctions in Kano metropolis, it comprised of carrying traffic count in the vicinities so as ascertain the sources of the pollution and identify the level of carbon monoxide (CO), nitrogen dioxide (NO 2), Sulphur dioxide (SO 2) for a period of six weeks. Traffic density was estimated via manual counting using tally sheet system. Crowcon gasman to air samplers ware used to measure the concentrations of gases emitted into the atmosphere at the selected locations. A total of 126 samples of air quality measurements were taken out for three hours, with each hour devoted to morning, afternoon and evening peak periods. Results obtained were compared with National Environmental Standard and Regulatory Enforcement Agency (NESREA) guideline limits. Data were analysed using statistical package IBM SPSS version 16.0 to compute descriptive statistics, Pearson correlation, regression analysis and one sample t-test. There was a correlation between CO, NO 2, SO 2 and traffic volume in the entire junctions, and most of the correlation obtained may be attributed to the high vehicular volume in the traffic jam. The result of this indicated that the mean concentration of CO, NO 2 and SO 2 emission at Kabuga, Kofar ruwa, Hotoro NNPC and Aminu Kano Teaching Hospital traffic junctions, gaseous emissions were within NESREA guideline limit for ambient conditions, except for CO concentration of 14.43 and 13.60 ppm at Bata and Kantin Kwari intersections were found to be much higher when compared with the NESREA guideline limits, respectively. This implies that transport-related pollution around Bata and Kantin Kwari is apparently unsafe. Similarly, it is likely that air quality will continue to deteriorate as the city continues to grow. Therefore, there is need for government to institute and enforce traffic emission control and air quality management programs as a priority. They should also work to prevent further environmental degradation by adopting effective policy in Nigeria.

The Challenges and Opportunities of Environmental Law Enforcement: A Systematic Review

Introduction: The formation of environmental law in many countries worldwide will unavoidably be promoted and coordinated by the non-governmental environmental groups currently in the world. In addition, it will benefit some developing countries where environmental protection is not a priority, environmental laws are not well-established, and oversight is not rigorous enough. Objective of research: This paper aims to explore the challenges and opportunities of environmental law enforcement in many countries in the world. Methods: A systematic review was used in this study. Based on the Preferred Reporting Items for Systematic Reviews and Meta-Analyses, this study followed the steps of a systematic review of the literature (PRISMA). The final sample of 35 publications was analyzed, considering the year of publication, methods utilized, geographical location, the topic of challenges, and opportunities in enforcing environmental law. Responding to environmental crime is largely the responsibility of government enforcement and regulatory authorities, whether at the national, subnational, or municipal levels. Results and Discussion: The primary reaction agencies in most areas of the world are police, customs and border protection, and environmental regulatory agencies. To assist developing nations in improving environmental legal instruments and supervision; to achieve the ultimate goal of regional and even global environmental law coordination; to train relevant persons, relevant agencies, and other topics in the necessary environmental skills and knowledge; and to transfer and teach environmental knowledge and law within a specified time frame. Conclusion: Although some countries have a thorough legislative structure for environmental protection, local government independence and law enforcement must be improved. The ability of environmental law to serve a purpose is critical in determining whether the measures should be fully implemented.

Examining the Role of Trade on the Relationship between Environmental Quality and Energy Consumption: Insights from Sub Saharan Africa

This study looks at the relationship between energy consumption and environmental quality in Sub-Saharan Africa (SSA) and how trade with other countries affects it. It examines data from 35 SSA economies between 1996 and 2020, categorized into low-income (LICs) and middle-income (MIC) countries. Using the cross-sectional augmented autoregressive distributed lag (CS-ARDL) approach, the results show that energy use, especially in MICs, negatively affects environmental quality. Trade, however, considerably lessens these detrimental environmental implications of energy consumption. According to the study, legislative actions intended to stop environmental deterioration in Sub-Saharan Africa should take into account the unique political and economic circumstances of each country. In addition, authorities should strike a balance between economic interests and environmental concerns, particularly in sectors dependent on the importation of used goods, and trade and environmental regulatory agencies must work together to enforce age restrictions on imported used items.

Package-type strategies and packaging's carbon reduction decisions in the take-out industry

Using environmentally friendly packaging (E-packaging) instead of non-environmentally friendly packaging (N-packaging) can mitigate pollution and reduce carbon emissions. However, the market penetration rate of E-packaging is low, and the packaging carbon reduction level is uneven. This study uses game theory models to examine the factors affecting packaging carbon reduction levels and fees as well as firms' package-type decisions. First, we obtain the optimal solutions for packaging manufacturers and firms when they use different types of packaging under monopoly and competition, respectively. We find that green competition reduces the carbon reduction level of E-packaging, whereas price competition can increase it under certain conditions. The unit manufacturing cost of N-packaging and cost coefficient of carbon reduction are critical considerations for package-type decisions. When the unit manufacturing cost of N-packaging is low and the cost coefficient is large, no firm uses E-packaging. We also demonstrate that firms in a competitive market may become trapped in a prisoner's dilemma after making package-type decisions. Interestingly, we show that the firms' package-type decisions can hurt consumers and welfare under certain conditions, depending on the N-packaging's unit manufacturing cost and pollution damage factor. Our findings provide insights for packaging manufacturers, firms, and environmental regulatory agencies, and can help promote E-packaging.

Current state, microbiological monitoring, and prevention of water pollution in Lake Baikal

Since 2003, Limnological Institute SB RAS has been holding the International Baikal Microbiological Symposia “Microorganisms and Viruses in Aquatic Ecosystems” every four years, and even in the “covid” year 2020, it was held “in remote mode.” The proper functioning of viral and bacterial communities is the basis for the stable quality of aquatic ecosystems. New ecological problems for the Lake Baikal ecosystem are becoming more and more acute, and the scientific research, the results of which are presented and discussed at these symposia for different aquatic ecosystems around the world, should help to find solutions for preserving the water quality now and in the future. We analyze the long-term microbiological studies of the water quality in the littoral and pelagic zones of Lake Baikal carried out by numerous authors, and propose a specific scheme of microbiological monitoring of this unique aquatic ecosystem required by the environmental regulatory authorities. Specific measures to prevent pollution of oligotrophic lake waters are also provided; these measures can be rapidly implemented now.

Evaluation of the Histomorphology of Small Intestine of Wistar Rats Exposed to Eliozu Dumpsite Leachate

This study is aimed to evaluate the histomorphology of small intestine of Wistar rats exposed to Eliozu dumpsite leachate. The toxic effect of Eliozu dumpsite leachate has been studied, where the researcher has identified that the leachate has toxicological effects on some organ tissues like the blood, reproductive tracts and hormones, oxidative stress parameters and the cerebral cortex. Twenty-five female Wistar rats weighing between 120-140 g were obtained from the animal house unit of Faculty of Basic Medical Sciences, University of Port Harcourt, Nigeria. The rats were randomly assigned into five groups of five (5) rats in each group. Group 1 served as a control and orally received 1 ml of bottled water; group 2 orally received 1 ml of water from a borehole close to the dumpsite. Groups 3, 4 and 5 received 1 ml of 10%, 50%, and 100% leachate concentrations orally for 30 days. In the present study, an alteration in the histoarchitecture of the small intestine of the Eliozu dumpsite leachate treated animals was observed; the small intestine of the control group has shown normal intestinal histoarchitecture. The mucosa forms a series of finger-like villi, each showing lamina propria, blood capillaries etc. the simple columnar mucosal epithelium contains absorptive goblets cells, crypts of Liberkuhn in the mucosa and Brunner’s glands. It is concluded that exposure to the Eliozu dumpsite leachate and the consumption of the nearby borehole water with significant heavy metals and microorganism have caused the histopathological alterations in gastrointestinal tracts (small intestines) of animals and it is recommend that Government and environmental regulatory agencies find an ecofriendly method to treat Eliozu dumpsite leachate.

Establishing Chronic Toxicity Effect Levels for Zebrafish (Danio rerio) Exposed to Perfluorooctane Sulfonate.

Zebrafish (Danio rerio) are among the aquatic species most sensitive to perfluorooctane sulfonate (PFOS). Environmental regulatory agencies and researchers use effect benchmarks from laboratory zebrafish PFOS toxicity studies in PFOS-spiked water to calculate PFOS aquatic life criteria. Threshold values as low as 0.7 µg/L (identified in an early, limited scope study) have been used in criteria derivation and site-specific aquatic ecological risk assessments. The present study reviews PFOS effects benchmarks for lethality, growth, and reproduction endpoints from more than 20 zebrafish toxicity studies, including a recent multigenerational study conducted by the United States Army Corps of Engineers Engineer Research & Development Center. Our review of 12 key studies examining long-term, chronic exposures (including multigenerational exposures of 300 days or more) indicated that 0.7 µg/L should not be used as a conservative screening threshold given that effects could not be repeated at this concentration by the recent enhanced multigenerational study. Based on this finding and multiple chronic sublethal studies on PFOS in zebrafish, chronic effects on lethality, growth, and reproduction occur at concentrations two orders of magnitude higher than 0.7 µg/L. Overall, the present review indicates a no-effect screening level of 31 µg/L and a low-effect screening level of 96 µg/L should be used to develop PFOS aquatic life criteria and to inform site-specific ecological risk assessments that are charged with evaluating risks to freshwater fish. Environ Toxicol Chem 2024;43:7-18. © 2023 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.

Environmental Justice at the Environmental Regulation in Indonesia and Uzbekistan

Justice theory, which emphasizes the fair and equitable allocation of risks and benefits, has significantly influenced the idea of environmental justice. Indonesia and Uzbekistan have made it mandatory for laws and regulations to implement the concept of environmental justice. Still, in practice, the rules created give birth to social-environmental conflict dimensions that are increasingly prevalent and far removed from environmental justice. This research aims to understand and analyze environmental justice regulation in Indonesia and Uzbekistan. This research uses a normative juridical approach with a literature review involving primary and secondary legal sources. The results show that the provisions of the Job Creation Bill in the forestry and environmental sectors negate access to justice via litigation at the State Administrative Court (PTUN) so that there is no public space to continue an AMDAL decision or environmental approval as part of an environmental licensing instrument in the realm of administrative law. Regulatory problems that co-occur and are followed by implementation problems at a later date relating to the legitimacy and protection of people's constitutional rights will harm the community's sense of justice. At the same time, the issue of environmental injustice in Uzbekistan arises from the ecological crisis beginning with green space, waste management, and the water crisis that has afflicted the nation, as indicated by the preceding explanation. The government must establish national policies, institutional instruments, and central and regional environmental management authorities to facilitate development with an eye toward environmental justice.

An empirical study on relationship between island ecological environment and socio-economic development from perspective of environmental Kuznets curve (EKC)

Constrained by the limitations of its natural environment, the island ecosystem remains susceptible to the influence of human activities. Achieving a state of equilibrium and sustainability between the ecological milieu and regional economic growth becomes a paramount goal. To this overarching aim, the author embarked on an endeavor to assess the ecological landscape of Hainan Island utilizing the Remote Sensing Ecological Index (RSEI) model. This appraisal was further coupled with an empirical exploration of its interplay with socioeconomic progress through a panel regression framework. The outcomes borne of this meticulous inquiry unveil a compelling dynamic: the nexus between the ecological environment and socioeconomic advancement assumes the form of a “positive N-shaped” curve. This signifies that the ecological milieu prospers in tandem with the ascent of GDP per capita up until the emergence of the first inflection point (corresponding to a GDP per capita of 18,796.01 yuan). Following this juncture, the ecological conditions start to deteriorate, only to experience a revival leading to the second inflection point (marked at a GDP per capita of 70,586.91 yuan). Moreover, it's worth noting that the variables under scrutiny in this study, with particular emphasis on the industrial structure, wield a discernible influence on the Environmental Kuznets Curve (EKC). In light of these findings, it is imperative that environmental regulatory authorities implement judicious strategies aimed at harmonizing economic advancement with ecological preservation. By doing so, a harmonious balance between developmental gains and environmental stability can be achieved.

Solving a real-life multi-period trailer-truck waste collection problem with time windows

By introducing local recovery networks, regional and local environmental authorities can play an important role in facilitating the circular economy. This paper studies a network design problem that encompasses the recovery of separately collected household waste streams, which are collected in containers at civic amenity sites. We formulate a generic tactical-operational container collection problem that will be solved using a mixed integer linear programming approach. This paper makes both a theoretical and practical contribution. We are the first to study a two container vehicle capacity restriction combined with collection site inventory capacities, time windows, shift break time, and shift duration constraints. The model is applied to a number of real-life test instances and scenarios. The results provide insight in how different combinations of scenarios exactly affect the fleet requirements. This not only includes the number of trucks or information under which circumstances an additional truck would (not) be needed, but also the 12-day collection schedule for the collection crews.

Uncovering the Critical Factors that Enable Extractive Desulfurization of Fuels in Ionic Liquids and Deep Eutectic Solvents from Simulations.

Environmental regulatory agencies have implemented stringent restrictions on the permissible levels of sulfur compounds in fuel to reduce harmful emissions and improve air quality. Problematically, traditional desulfurization methods have shown low effectiveness in the removal of refractory sulfur compounds, e.g., thiophene (TS), dibenzothiophene (DBT), and 4-methyldibenzothiophene (MDBT). In this work, molecular dynamics (MD) simulations and free energy perturbation (FEP) have been applied to investigate the use of ionic liquids (ILs) and deep eutectic solvents (DESs) as efficient TS/DBT/MDBT extractants. For the IL simulations, the selected cation was 1-butyl-3-methylimidazolium [BMIM] and the anions included chloride [Cl], thiocyanate [SCN], tetrafluoroborate [BF4], hexafluorophosphate [PF6], and bis(trifluoromethylsulfonyl)amide [NTf2]. The DESs were composed of choline chloride with ethylene glycol (CCEtg) or with glycerol (CCGly). Calculation of excess chemical potentials predicted the ILs to be more promising extractants with energies lower by 1-3 kcal/mol compared to DESs. Increasing IL anion size was positively correlated to enhanced solvation of S-compounds, which was influenced by energetically dominant solute-anion interactions and favorable solute-[BMIM] π-π stacking. For the DESs, the solvent components offered a range of synergistic, yet comparatively weaker, electrostatic interactions that included hydrogen bonding and cation-π interactions. An in-depth analysis of the structure of IL and DES systems is presented, along with a discussion of the critical factors behind experimental trends of S-compound extraction efficiency.

Genomic and phenotypic features of Acinetobacter baumannii isolated from oil reservoirs reveal a novel subspecies specialized in degrading hazardous hydrocarbons

The genus Acinetobacter encompasses biotechnologically relevant species and nosocomial pathogens. In this study, nine isolates recovered from different oil reservoir samples showed the ability to grow with petroleum as the only carbon source and possessed the ability to emulsify kerosene. The whole genomes of the nine strains were sequenced and analyzed. The average nucleotide identity (ANI) and digital DNA-DNA hybridization (dDDH) values of all strains were compared to the reference strains, and the results were below the reference values (<97.88 and 82, respectively), suggesting that the isolates belong to a new subspecies of Acinetobacter baumannii. The name Acinetobacter baumannii oleum ficedula is proposed. A comparison of the whole genome repertoire of 290 Acinetobacter species indicated that the strains in this study resemble non-pathogenic Acinetobacter strains. However, the new isolates resemble A. baumannii when comparing virulence factors. The isolates in this study carry many genes involved in hydrocarbon degradation, indicating the potential to degrade most toxic compounds listed by environmental regulatory agencies such as ATSDR, EPA, and CONAMA. In addition, despite the absence of known biosurfactant or bioemulsifier genes, the strains showed emulsifying activity, suggesting the presence of new pathways or genes related to this process. This study investigated the genomic, phenotypic, and biochemical features of the novel environmental subspecies A. baumannii oleum ficedula, revealing their potential to degrade hydrocarbons and to produce biosurfactants or bioemulsifiers. Applying these environmental subspecies in bioaugmentation strategies sheds light on future approaches to bioremediation. The study shows the importance of genomic analysis of environmental strains and their inclusion in metabolic pathways databases, highlighting unique enzymes/alternative pathways for consuming hazardous hydrocarbons.

Impact of hospital wastewater on the rivers’ quality: Case of Byumba hospital

Hospital wastewater may pose chemical, biological, and physical threats to public and environmental health. This study's objective was to evaluate the effects of hospital wastewater on waterways' quality through physico-chemical parameters’ analysis where samples were collected on-site between July and November 2021, and then using EPA and Hash procedures, they were preserved, prepared, and measured in the Environmental Research Laboratory at the University of Lay Adventists of Kigali (UNILAK-ERL). According to the findings, both receiving streams were contaminated to the following degrees: pH (88.51%), TDS (55.98%), COND (55.92%), TP (10.14%), TN (39.70%), COD (25%), Cr (9.90%), Zn (20%), Mn (4.28%) for Ruhashya stream and pH (48.43%), TDS (26.75%), COND (26.73%), TP (20.83%), TN (13.33%), COD (5.55%), Cr (19.49%), Zn (30%), Mn (4.33%) for Rwiminsi stream respectively. The findings demonstrated that Byumba hospital effluent has the potential to contaminate the ecosystem if improperly managed. Therefore, Byumba Hospital should improve the effectiveness of its hospital and routinely examine the effluent quality originating from its wastewater treatment facility; in addition, People should not be allowed to drink water from streams that receive Byumba Hospital effluents; finally, local government officials should enforce the polluter-pays principle, and environmental regulatory agencies should stiffen the penalties for institutions that fail to manage their wastes properly. Others studies on waste have been conducted, but there hasn't been any research on total dissolved solid particles (TDS), mercury (Hg), lead (Pb), and other heavy metals, BOD, and COD. So, this research fills the gap left behind by other researchers.

Do Fluctuations in Environmental Regulations Inhibit Investment: Evidence from China.

The trade-off between the goals of promoting economic growth and protecting the ecological environment makes it possible for the government to constantly adjust the intensity of environmental regulation, leading to sharp fluctuations in environmental regulation in the short term. Fluctuations in environmental regulations may trigger concerns among firms and change their investment decisions. The theoretical model of corporate investment decision is used to analyze the inhibitory effect of environmental regulation fluctuations on investment through expected profits, which is empirically validated in this study by data from 255 Chinese prefecture-level cities. The results indicate that environmental regulation fluctuations reduce investors' expected profits, which in turn inhibit investment. The heterogeneity analysis shows that environmental regulation fluctuations have no significant effect on investment in cities that are geographically closer to the provincial capital, while a greater inhibitory effect of it is revealed in other cities located further away. Therefore, this inhibitory effect should be weakened by reducing the intervention of administrative orders in environmental regulatory behavior, establishing environmental regulatory supervisory agencies, and taking into full consideration the public's response to fluctuations in environmental regulation. This study can provide policy implications for optimizing government environmental regulation.

The Effects of Manufacturing Sector Output on Environmental Sustainability in Nigeria from 1990 to 2019

The study examined the effects of manufacturing sector output on environmental sustainability in Nigeria from 1990 to 2019. The variables used in the study are CO2 emissions as the dependent variable, and manufacturing sector output as the independent variable, with foreign direct investment, electricity production and population density applied as control variables. Co-integration tests indicated the presence of a long-run relationship among the variables of the study. The study employed the Autoregressive Distributed Lag Model (ARDL) for regression analysis. The result of the regression analysis indicates that the second lagged period of CO2 emissions has a negative impact on CO2 emissions in the current period. Also, manufacturing output has an insignificant effect on the rate of carbon dioxide emissions in Nigeria, both in the first and second lagged periods. However, electricity production has a significant effect on CO2 emissions in Nigeria. In addition, among the control variables of the study (FDI, PPD and EPD), foreign direct investment exhibits an insignificant effect on environmental sustainability in Nigeria. The study recommends that the government institutes and empowers environmental regulatory agencies that will help check environmentally harmful practices by manufacturing firms and industrial areas in the country.

Application of carbon emission prediction based on a combined neural algorithm in the control of coastal environmental pollution in China

The marine ecosystem provides the environment, resources, and services necessary for the development of every human society. In recent years, China's coastal zone has been polluted to varying degrees, which has seriously affected its development. The characteristics of marine environmental data include the variety of data types, the complexity of factors affecting the marine environment, and the unpredictability of marine pollution. Currently, there are few studies applying the clustering analysis algorithm to marine environmental monitoring. Then, carbon emissions (CEs) from coastal areas are predicted using marine environmental data. Therefore, this paper mainly studies the spatial and temporal accumulation characteristics of marine environmental data and uses the fuzzy c-means (FCM) algorithm to mine the data monitored by the marine environment. Meanwhile, it has been focused on the prediction of coastal CEs, and the grey model-back propagation (GM-BP) algorithm has been developed to predict CEs from coastal areas, which solves the problem that the traditional back propagation neural network (BPNN) cannot fully learn data features, which leads to a decline in accuracy. The experimental results showed that the FCM algorithm can divide the marine sample data into corresponding categories to distinguish polluted and unpolluted samples. The improved neural network model has a higher degree of non-linear fit and lower prediction error than a back propagation (BP) neural network. The main contribution of this paper is to first study the spatial and temporal accumulation characteristics of marine environmental data. The academic contribution of this study is to substitute the predictions of the three gray models (GMs) with the neural network structure simulation to finally obtain more accurate predictions. From a practical point of view, this study is helpful to a certain extent in alleviating the pressure of climate change due to increased CEs in global coastal zones. This study can also provide a new method of measuring environmental governance for marine environmental regulatory authorities.

NH3 and N2O emission durability of the heavy-duty diesel engine with DOC, DPF, SCR, and ASC through the accelerated aging method

A general accelerated aging method for aftertreatment devices of Heavy-duty Diesel Engine (HDDE) is proposed in this paper, and three sets of aftertreatment devices were aged according to this method. The error between the World Harmonized Transient Cycle (WHTC)-NOx emission factors of conventional aging and those of accelerated aging fitted by equivalent thermal accumulation is −4.12 to 3.13 %, which proves that the two methods have good equivalence. Meanwhile, the NH3 and N2O emission characteristics and durability were tested by Fourier Transform Infra-Red Spectroscopy (FTIR) equipment. The results show that NH3 and N2O emissions do not deteriorate linearly with the intensification of thermal aging like NOx. Except that the NH3 emission of AT03 exceeds the limit of China VI emission regulation (the average and maximum NH3 concentration in the WHTC test are 35.25 ppm and 350.30 ppm, separately), NH3 emission of other aged devices meet the requirements. Combined with the equivalent durability mileage of 1130000 km of AT02, the test China VI HDDE can effectively control NH3 emissions and has a large margin with the limit requirements. However, the deterioration rate of N2O emission gradually slows down with the intensification of accelerated aging. The accelerated aging tests also indicate that N2O generation is closely related to NH3 in SCR, consistent with previous studies conclusions of low-temperature and high-temperature N2O generation mechanisms. Equally important is that the N2O emission emitted from test China VI HDDE is significantly higher than the emission limit of the Environmental Protection Agency (EPA). The N2O emission factors under the WHTC test are as high as 0.15 to 0.35 g/kWh, which should draw the attention of Chinese environmental regulatory authorities, who should start to formulate N2O emission limits and put forward complementary strategies to reduce N2O emissions from HDDEs.

Sustainable Mini ETP for Small Industries: A Case Study of Powder Coating Industry

Effluent Treatment Plants (ETPs) are considered as one of the viable solution for small to medium enterprises for effective wastewater treatment. An Effluent Treatment Plant (ETP) is an integral part of production processes with relevance to wastewater, the pollutants with their respective limit values that have to be reduced. In addition, the ETP also facilitates in reduction of number of discharge points in an industrial estate for better enforcement by environmental regulatory agencies in terms of pollution reduction and environmental improvements. However, many of the operating ETPs are not performing optimally due to various technical and managerial reasons. Small scale industries usually do not have access to latest technological advancements in effluent treatment process. To address the pollution discharge of industries, adoption of cleaner production technologies and waste minimization initiatives are now gaining ground. Treatment of such industrial effluent is very important and necessary from environmental point of view. Also, to meet the Standards for emission or discharge of environmental pollutants from various Industries set by the Government and to avoid hefty penalties ETP is a need for the industries. In present case study anattempt is made to design a compact but sustainable mini effluent treatment plant for small scale industry i.e. powder coating unit. This mini ETP requires smaller space as compared to traditional ETP with old technology. By using such compact modular mini ETP for small scale industry issue of non-treating or partly treating effluent can be overcome with cost and space efficiency. This will enable small scale industries to cater their need to avoid pollution and also to safeguard environment.