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result(s) for
"Environmental hazard"
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Insight into the environmental fate, hazard, detection, and sustainable degradation technologies of chlorpyrifos—an organophosphorus pesticide
by
Arshad, Muhammad
,
Yadav, Krishna Kumar
,
Kumar, Manoj
in
Acaricides
,
Agricultural production
,
Aquatic Pollution
2023
Pesticides play a critical role in terms of agricultural output nowadays. On top of that, pesticides provide economic support to our farmers. However, the usage of pesticides has created a public health issue and environmental hazard. Chlorpyrifos (CPY), an organophosphate pesticide, is extensively applied as an insecticide, acaricide, and termiticide against pests in various applications. Environmental pollution has occurred because of the widespread usage of CPY, harming several ecosystems, including soil, sediment, water, air, and biogeochemical cycles. While residual levels in soil, water, vegetables, foodstuffs, and human fluids have been discovered, CPY has also been found in the sediment, soil, and water. The irrefutable pieces of evidence indicate that CPY exposure inhibits the choline esterase enzyme, which impairs the ability of the body to use choline. As a result, neurological, immunological, and psychological consequences are seen in people and the natural environment. Several research studies have been conducted worldwide to identify and develop CPY remediation approaches and its derivatives from the environment. Currently, many detoxification methods are available for pesticides, such as CPY. However, recent research has shown that the breakdown of CPY using bacteria is the most proficient, cost-effective, and sustainable. This current article aims to outline relevant research events, summarize the possible breakdown of CPY into various compounds, and discuss analytical summaries of current research findings on bacterial degradation of CPY and the potential degradation mechanism.
Journal Article
Integrated Risk Assessment of Tannery Effluents using Multivariate Pollution Indices and Health Metrics in Naraguta, Nigeria
2025
Tannery effluents contain a diverse blend of chemical, physical, and biological pollutants that threaten environmental quality and public health. This study offers a comprehensive evaluation of pollution profile and associated health risks resulting from untreated tannery wastewater discharges in Naraguta area of Jos, Nigeria. A total of 84 surface water samples were collected over a course of one year. Samples were examined for major physicochemical parameters (like pH, electrical conductivity, total suspended solids, total dissolved solids, total solids, Biochemical Oxygen Demand BOD
5
, and Chemical Oxygen Demand COD) according to American Public Health Association (APHA) and World Health Organization (WHO) methods. Heavy metals (iron and chromium) were also measured using atomic absorption spectrophotometry (AAS), while levels of nutrients (nitrate, sulfate, chloride, and total nitrogen) were analyzed through spectrophotometric and titrimetric methods. Microbial pathogens such as Escherichia coli and helminth eggs (
Ascaris lumbricoides
,
Hookworm
,
Trichuris trichiura
,
and Strongyloides stercoralis
) were detected through multiple-tube fermentation and parasitological concentration methods. Pollution was quantified using established indices, including Geo-Accumulation Index (I_geo), Environmental Hazard Index (EHI), and Pollution Load Index (PLI), using National Environmental Standards and Regulations Enforcement Agency (NESREA) and World Health Organization (WHO) guideline values serving as reference standards. Pollution Index (PI) values were 3-6 times over permissible levels. Contamination Index (CI) rated samples taken from stations downstream were highly polluted based on the cumulative impacts of several contaminants. Geo-Accumulation Index (I_geo), for chromium was as high as 5.06, reflecting “very strong pollution,” while I_geo, for turbidity (3.3) and colour (3.6) reflected a significant anthropogenic contribution. Health hazards were measured by the Health Risk Index (HRI) model, which included Chronic Daily Intake (CDI) and Reference Dose (RfD) models to predict ingestion-based pathways of exposure. Principal Component Analysis (PCA) revealed three principal components that accounted for 85.9% of the total variance, indicating both industrial (anthropogenic) and microbial origins of contamination. These results emphasize the pressing ecological and public health risks posed by ineffective tannery waste management. The study calls for an immediate implementation of stricter effluent discharge controls, investment in modern wastewater treatment systems, and establishment of continuous environmental monitoring programs to prevent long-term exposure and degradation.
Journal Article
Nanoparticles as Novel Emerging Therapeutic Antibacterial Agents in the Antibiotics Resistant Era
by
Khan, Waqar Ahmad
,
Faria, Fatima
,
Siddiqui Saba
in
Angiogenesis
,
Antibacterial agents
,
Antibiotics
2021
Microorganisms are highly resistant to the antibiotics that are commonly used and thus are becoming serious public health problem. There is an urgent need for new approaches to monitor microbial behavior, and hence, nanomaterial can be a very promising solution. Nanotechnology has led to generation of novel antimicrobial agents such as gold, silver, zinc, copper, poly-£-lysine, iron, and chitosan which have shown remarkable potential, demonstrating their applicability as proficient antibiotic agents against various pathogenic bacterial species. The antimicrobial nanoproduct physically kills the organism’s cell membranes that prevent the production of drug-resistant microorganisms. These nanosized particles can also be used as diagnostic agents, targeted drug delivery vehicle, noninvasive imaging technologies, and in vivo visual monitoring of tumors angiogenesis. These nanomaterials provide a promising platform for diagnostics, prognostic, drug delivery, and treatment of diseases by means of nanoengineered products/devices. This owes to their small size, prolonged antimicrobial efficacy with insignificant toxicity creating less environmental hazard or toxicity. Scientists address several problems such as health, bioethical problems, toxicity risks, physiological, and pharmaceutical concerns related with the usage of NPs as antimicrobial agents as current research lack adequate data and information on the safe use of certain tools and materials.
Journal Article
Coastal disaster surveys and assessment for risk mitigation
by
Shibayama, Tomoya, editor
,
Esteban, Miguel, editor
in
Coastal engineering.
,
Coastal zone management.
,
Natural disasters Simulation methods.
2023
\"This collection covers the essential concepts in the management of coastal disasters, outlining several field surveys of coastal disasters in the 21st century, including the Indian Ocean and Tohoku Tsunamis, and the storm surges of Hurricane Katrina, Cyclone Nargis, and Typhoon Haiyan. Measurements of flood heights, distributions of structural destruction, and residents' testimonies are reported, and the results are analysed and compared with past events and numerical simulations, with the reality of these disasters reconstructed. The book then covers the current understanding of disaster mechanisms and the most advanced tools for future simulation. Uniquely explains how to use disaster surveys along with simulations to mitigate risk. Combines pure scientific studies with practical trials and proposes future procedures for effective coastal disaster mitigation. Coastal Disaster Surveys and Assessment for Risk Mitigation is ideal for students in the disaster field as well as engineers who manage tsunamis, storm surges, high wave attacks and coastal erosion\"-- Provided by publisher.
Oral exposure to PET microplastics induces the pancreatic immune response and oxidative stress in immature pigs
by
Mierzejewski, Karol
,
Kurzyńska, Aleksandra
,
Bogacka, Iwona
in
Administration, Oral
,
Animal Genetics and Genomics
,
Animals
2025
Microplastics are a widespread environmental hazard and their impact on human health has become a growing concern in last years. Recently, the potential role of microplastics in the development of various diseases, including diabetes, has been highlighted. Therefore, the aim of this study was to investigate the effects of PET microplastics on the pancreas using immature pigs as a model organism. We analyzed the global transcriptomic profile of the pancreas by RNA-Seq in piglets treated with either a low (0.1 g/day) or a high dose (1 g/day) of PET microplastics for 4 weeks. The analysis revealed a dose-dependent effect of PET microplastics on gene expression. A low dose changed the expression of one gene, while a high dose affected the expression of 86 genes. The differentially expressed genes, including immune cell markers, cytokines and chemokines, may activate the immune system in the pancreas in a way that is characteristic of the pathogenesis of diabetes. In addition, PET microplastics induced oxidative stress in the pancreas. These above imply that oral exposure to PET microplastics could be a new risk factor for the development of diabetes.
Journal Article
Return to Fukushima
by
Bass, Thomas A., author
in
Fukushima Nuclear Disaster, Japan, 2011.
,
Environmental risk assessment.
,
Radiation.
2025
Return to Fukushima captures the aftermath of the 2011 nuclear disaster in Fukushima. Thomas Bass chronicles the resilience of people navigating life amid radioactivity. From desolation to revitalization, Fukushima's Argonauts of the Anthropocene offer a survival guide to our atomic future. Fukushima is an ongoing nuclear disaster. The four reactors that melted down and exploded in 2011 are still deadly, even to the robots that get burned up trying to explore them. Over a hundred thousand people remain displaced, their homes frozen in time, eerie ghost towns where slippers sit undisturbed at doorsteps and tables are set for absent guests. Wild animals have moved into the houses. Vines overgrow buildings surrendering to entropy. Visiting these places, we stare at the vacant world remaining after we have ended our brief tenure as overlords of the Anthropocene. The world is dotted with nuclear exclusion zones. Atolls blown to smithereens. Test sites in the Mojave Desert. Disasters at Soviet bomb-making factories. The Red Forest around Chernobyl. These zones are growing in number and melding one into another. What if our future demands that we learn how to live in nuclear exclusion zones? Learn how to master the risks and develop resistant crops and other survival skills? Nowhere is this future more evident than in Fukushima, where the Japanese government is pushing people to resettle in towns that are supposedly decontaminated. These attempts have largely failed. But what has not failed are the grassroots efforts at reviving Fukushima. This is propelled by the ingenuity of local farmers and entrepreneurs, citizen scientists, artists, and immigrants from around the world who are intrigued by starting new lives in the red zone. In 2018 and again four and a half years later, Thomas Bass travelled to Fukushima. The difference was dramatic The place had been cleaned up and reopened, not fully, but little-by-little people are learning to live with radioactivity, decontaminate their fields, monitor their food, and prepare for the next wave set to wash over this seismically precarious part of the world. After seven years of research, including travels to Chernobyl, Bass gives us a remarkable account of how Fukushima's Argonauts of the Anthropocene are guiding us into our atomic future.
Characterization and utilization potential of typical molybdenum tailings in Shaanxi Province, China
2024
Shaanxi Province is located in the most important molybdenum ore district in the world, but a lot of molybdenum tailings have been released, polluting the environment and wasting resources seriously. Taking eleven tailing samples collected at the main molybdenum tailings ponds in Shaanxi Province as the research object, the physical, chemical, and mineralogical characteristics were studied through scanning electron microscope, X-ray fluorescence, X-ray diffraction, inductively coupled plasma mass spectrometer, and others. The ecological risk and utilization potential of molybdenum tailings were investigated through leaching test, geo-accumulation index, potential ecological risk assessment, and other methods. The results demonstrated that the main chemical and mineralogical composition of various molybdenum tailings in Shaanxi Province is similar, and the predominant mineral composition is muscovite, quartz, microcline, and calcite. The potential ecological risk of heavy metals in six molybdenum tailings is high, while Pb and Cd are the main pollution risk elements. Molybdenum tailings contain considerable amounts of critical minerals with huge potential economic value, and molybdenum tailings with high environmental hazards could be converted into a possible source for critical minerals by recovering the critical minerals and repurposing the secondary tailings as an additive or cement substitute. This study provides an innovative idea for the pollution treatment of molybdenum tailings and indicates the prospect of molybdenum tailings as a secondary source for critical minerals.
Journal Article