Articles tagged with Water Pollution
Researchers at KAUST used drones to track dye plumes in coastal waters, providing insights into the dispersion of materials in the water column and along the coast. The study demonstrated the potential of unmanned aerial vehicles for monitoring time-sensitive events and capturing rapidly developing processes.
A new study by University of Maryland scientists has developed a five-stage scale to track the progression of salt pollution in freshwater streams and rivers. The researchers found that road salts combined with other pollutants create
The study found that superlinear scaling occurs in aquatic ecosystems of larger watersheds, releasing carbon back into the atmosphere. Smaller watersheds are less effective at filtering pollutants and mitigating nonpoint source pollution.
Researchers at Stanford University developed an electrochemical sulfur oxidation process that can transform wastewater into valuable materials. The technology has the potential to power renewable energy-powered wastewater treatment, creating drinkable water.
A new study reveals that marine organisms attach themselves to plastics and are transported by marine currents, contributing to the introduction of non-native species. The research found diverse marine life attached to plastic debris, including bryozoans, which could become invasive and alter ecosystems.
A new study analyzes sediment cores from the North Sea, showing a significant accumulation of pollutants since the industrial revolution. The researchers found that the deposition of pollutants is linked to fine sediments transported by currents, causing a strong accumulation on the seabed.
Researchers in Acadia National Park found that regulations reducing atmospheric sulfur have led to a partial recovery of algae ecosystems, despite ongoing climate change impacts. Clear-water lakes like Jordan Pond are more sensitive to warming than brown-water lakes like Seal Cove Pond, leading to slower recovery rates.
Research by Oregon State University scientists has found that tiny tire particles inhibit growth and cause adverse behavioral changes in organisms in freshwater and coastal estuary ecosystems. The findings suggest that even at current environmental levels of tire-related pollution, aquatic ecosystems may be experiencing negative impacts.
A global study reveals that freshwater lake ecosystems are being damaged by salt concentrations below government-protective thresholds. The loss of zooplankton triggers a cascade effect causing an increase in algae, potentially altering nutrient cycling and water quality.
A recent global study found that more than a quarter of the world's rivers had pharmaceutical concentrations at potentially toxic levels. The study, which included data from over 258 rivers across seven continents, also revealed concurrent contamination by multiple classes of pharmaceuticals.
A new study by Tel Aviv University researchers found that microplastics absorb and concentrate toxic organic substances, increasing their toxicity by a factor of 10. This may lead to severe impact on human health due to contaminated food and drink.
Monitoring projects have identified a vast array of contaminants in urban stormwater, including tire- and vehicle-derived chemicals, PFAS, phosphorous, metals, and more. Researchers are exploring various strategies to address this issue, such as rain gardens, permeable pavement, and reducing chemical usage at the source.
A new study found concentrations of pharmaceuticals at potentially toxic levels in over a quarter of the world's rivers, including major waterways like the Thames and Amazon. The research highlights the need for increased monitoring to mitigate environmental impacts.
A new study from the University of Waterloo provides a roadmap for faster improvements in water quality by tackling nitrogen legacies. The research recommends six steps to address this critical issue, which has persisted for decades due to excess nitrogen fertilizers.
A new Dartmouth-led study found that antimony and other metals are associated with lower birthweight, while some metals show group- and sex-dependent associations. The research suggests that reducing exposure to these metals could help prevent harmful effects on fetal growth.
A City University of Hong Kong study found that improper disposal of surgical masks can pollute over 54,800 Olympic-sized swimming pools annually with microplastics. The research also showed that microplastics accumulate in the food chain, affecting marine organisms and potentially harming higher-level species.
Researchers in California discovered that most trash items come from local sources, with nearly 60% of collected materials being plastic. The study suggests that cities can address the issue through bans on frequent litterers and increased street sweeping to prevent reoccurring litter.
Over one quarter of Europe's 20 most highly-fished marine species will face extreme pressure by 2100 if no action is taken to address climate change, overfishing, and mercury pollution. The study projects a significant decline in population size for key species like great Atlantic scallop, red mullet, and common octopus.
Scientists have discovered characteristic breakpoints that alter pollutant concentrations in rivers, impacting global water security. The research sheds light on the behavior of aquatic pollutants in large river systems, including India's River Ganga.
A study by ICTA-UAB suggests that microplastic levels in the Mediterranean Sea are likely higher than previously estimated due to the limitations of current sampling methods. The researchers emphasize the need for a common framework to compare results and combine methods to better understand the distribution and impacts of microplastics.
Native marine macroalgae thrive in environments created by natural groundwater seeps, benefiting from enhanced nutrients despite lowered salinity levels. In contrast, tainted groundwater seeps support invasive species, threatening native algal dominance.
The COVID-19 pandemic had both positive and negative impacts on environmental pollution and carbon emissions. The study found that water quality improved globally due to reduced commercial activities, while air pollutants like NO2 and CO decreased in most regions. However, sulphur dioxide and ozone levels increased, and soil contaminat...
Researchers found microplastics accumulate near river sources and take long times to be transported downstream, posing ecological risks. The study's model describes hyporheic exchange processes that retain microplastics in rivers for years.
Mathematical modeling can assess toxicants' impact on river populations without endangering the environment. A new model developed by Peng Zhou and Qihua Huang describes the interactions between a population and a toxicant in an advective environment.
A new procedure uses high-intensity pulses of light to dramatically accelerate the removal of organic micropollutants from water. The treatment can degrade pollutants at extraordinary rates, making it an ideal solution for high-throughput water treatment applications.
Research from the Marine Biological Laboratory reveals that sea anemones are severely impacted by pollutants in their native habitats. The study found that exposure to common pollutants like phthalates and potassium nitrate led to decreased body size, fewer tentacles, and reduced stinging cells.
Despite efforts to control river pollution, lake water quality has not improved as expected in China. Lake restoration and ecological management are key to addressing eutrophication and achieving sustainable development.
A new technology developed by Aarhus University researchers uses sustainable biochar-based photocatalytic nanomaterial to break down PFAS into harmless substances. The process is powered by solar energy and produces non-toxic fluorides, CO2, and clean water.
Researchers at Skoltech developed an algorithm that aggregates and maps environmental data to predict and visually map the quality of water, soil, or air. The solution uses interpolation to fill gaps in data and produces detailed maps with high resolution.
Researchers at NIST developed new standards and calibrations for optical microscopes, enabling accurate measurement of microdroplet volumes smaller than 100 trillionths of a liter. They combined microscopy with gravimetry to verify results, linking their findings to fundamental constants of nature.
A field study found that sea spray aerosols contain pollutants like perfluoroalkyl acids (PFAAs), potentially harmful compounds known as "forever chemicals". The researchers estimated global emissions of PFAAs from oceans to air could be up to 756 U.S. tons annually.
A study by Stockholm University researchers found that PFAS from the ocean re-emitted into air with crashing waves significantly contribute to PFAS air pollution in coastal areas. The transportation of toxic substances from seawater to marine air via sea spray aerosols poses a significant threat to health and the environment.
A study found a strong correlation between the number of microbial enzymes that can degrade plastic and local levels of plastic pollution. Researchers analyzed environmental DNA samples from around the world and discovered over 30,000 enzyme homologues with potential to break down various types of plastics.
A new project led by University of Illinois researchers will develop machine learning models to predict the reactivity of thousands of organic contaminants in engineered and natural environments. This will help scientists better model pollutant fate and transport, leading to more accurate contaminant risk assessments.
Researchers found that fish exposed to BPA exhibited feminizing effects on gonads, brain genes, and hormone levels, leading to changes in aggression and sex determination. In contrast, EE2 had less pronounced effects, with decreased aggression despite feminization of gonads.
A recent study found associations between air and water pollutants and changes in the human sex ratio at birth. Pollutants such as PCBs, iron, lead, and chromium were linked to an increased or decreased ratio of baby boys to girls.
Coastal organisms thrive on floating plastic debris in the North Pacific Subtropical Gyre, expanding their biogeography. The discovery reveals that plastic pollution is providing a habitat for coastal species to survive and even thrive in the open ocean.
A study by FAU Harbor Branch reveals that even properly functioning septic systems contribute to nitrogen pollution in the Indian River Lagoon. Groundwater samples showed higher dissolved nutrient concentrations than surface waters, indicating contaminated groundwater as a major source of nutrient loading.
A team from Tsinghua University developed analysis models to simulate the diffusing process of radioactive water in oceans. The pollutants are expected to cover almost the entire Pacific Ocean within 3600 days, with a contamination center moving eastward along the 35°N latitude line.
A new study led by the University of Pittsburgh reveals that 360 million metric tonnes of new plastic were produced in 2018, with only 9% being recycled. The research found that the greenhouse gas emissions associated with plastic production are staggering, accounting for 350 million metric tonnes of CO2 equivalent.
A new study uses a microspectroscopic technique to measure micro- and nano-sized plastics in steam-disinfected silicone-rubber baby bottle nipples. The research found that these fine particles can be released into the environment and ingested by babies, posing health risks.
A team of scientists found microplastics in Antarctic water, with most particles linked to ship-based paint. The study suggests that shipping traffic is a key source of microplastic pollution in the Southern Ocean.
A new filtration system using acoustic waves successfully separates microplastics from polluted water, with a cleaning rate of 150 liters per hour. The device's efficiency varies with acoustic frequency and density of the water, but shows promise for improving marine life safety.
The report reveals that electronic waste generated in the region rose by 50% between 2010 and 2019, with only 3.2% collected and safely managed. The regional e-waste total jumped from 1.7 Mt to 2.5 Mt, with Russia generating the most e-waste.
Researchers at Aarhus University have developed a groundbreaking technology to accurately map and characterize groundwater systems. The new method uses surface-based NMR measurements, enabling detailed hydrogeological and geological analysis in previously inaccessible areas.
Researchers from South Korea have demonstrated that applying an electric field during air stripping can significantly improve ammonia removal efficiency from wastewater. The study found that electric fields with alternating current of 50 MHz and power of 15 V/cm increase efficiency from 51% to 94%, even under sub-optimal conditions.
Researchers emphasize the need for monitoring drinking water for HIV medications, as they can contaminate rivers and streams through wastewater. The lack of regulation on pharmaceuticals in wastewater treatment plants poses a significant challenge in ensuring safe drinking water.
A University of Adelaide study reveals that over 35% of fish caught off southern Australia contain microplastics, with the problem being most acute in South Australia. Simple actions like replacing plastic fishing equipment and using biodegradable bags can quickly reduce plastic pollution in the ocean.
A new study found that over 70% of microplastics in ocean and river samples could come from scientists collecting them. The researchers used a catalogue to identify potential sources of contamination, finding that even small items like clothing and gear contributed significantly.
Scientists at Tokyo Institute of Technology developed a new peptide sensor to detect and quantify water-soluble synthetic polymers in wastewater. The technique uses machine learning algorithm to identify and discriminate between different polymers.
Researchers at St. Petersburg State University develop a new method for synthesizing nanoparticles from metal-organic frameworks, enabling detection of heavy metal ions in water with significantly lower limits of detection. The synthesized particles can also be used as luminescent sensors to detect Cu2+, Cr3+, and Fe3+ ions.
Exposure to artificial light at night impairs crickets' activity cycles, disrupting their nocturnal chirping and potentially affecting reproduction. The study, conducted by researchers at Tel Aviv University and the Open University, highlights the need to reduce artificial light pollution to protect environmental behaviors.
A new study led by University of Delaware Associate Professor Kathryn Coyne found that warming temperatures contribute to an increasing number of harmful algal blooms. The study showed that changes in light conditions significantly influence the growth and impact of these algae, particularly for species like Karlodinium veneficum.
A recent study reveals that fish ingest progesterone through microplastics, releasing the hormone into their digestive tract. Researchers found that microplastics act as vectors for exposing fish to micropollutants like progesterone, which can have significant environmental and health impacts.
Research found that warming water temperatures and browning increase methylmercury transfer to phytoplankton, reducing essential polyunsaturated fatty acids. This impacts the food chain, exposing higher organisms to toxic mercury and compromising nutrition, posing a threat to human health.
Researchers developed a biodegradable polymer called polylactide (PLA) with RNA-inspired breaking points, which can break down faster in seawater. The degradation rate of the polymer can be tailored depending on the amount of breaking points, offering a potential solution to marine pollution.
A study in Brazil's Santos city showed that citizen science collaboration between civil society and academia can achieve progress toward ocean conservation goals. The project developed a methodology for integrating civil society and academia, including training and validation of monitoring protocols.
A new study published in Science of the Total Environment has found that 21% of Arctic fish eaten by beluga whales contain microplastic particles. Researchers estimate that belugas ingest up to 145,000 particles of microplastics per year, highlighting the pervasive nature of plastic pollution in the Arctic.
UMass Lowell's SWIMMER program trains master's and Ph.D. students to develop sustainable materials and chemicals reducing harm to water resources. Participants address issues like toxic PFAS, droughts, and environmental justice.
A UNSW-led study analyzing 10 years of citizen science data found that almost half of marine debris can be linked to land-based sources. Plastic accounts for 84% of the rubbish found on Australian beaches, with a significant portion coming from external sources such as stormwater drains near capital cities.