Articles tagged with Heavy Metals
Scientists have created a membrane made from a waste by-product of vegetable oil manufacturing that can filter out heavy metals from contaminated water. The membrane uses proteins derived from peanut or sunflower oil production to attract and trap heavy metal ions, purifying water to international drinking standards.
Elevated heavy metal levels in rivers can lead to higher antibiotic resistance levels, according to research by Newcastle University and the Indian Institute of Technology, Delhi. The study found that metal pollution increases antibiotic resistance gene abundances, affecting resident bacteria.
Researchers found that maintaining hard water reduces zinc accumulation and oxidative stress in goldfish, mitigating toxic effects. This study provides an eco-friendly approach to address aquatic ecosystem pollution caused by heavy metal contamination.
Researchers at Ural Federal University improved the composition of borate glasses by adding heavy metal oxides, significantly increasing their density. The new glass samples showed good results as radiation shielding material in low and medium energy gamma radiation.
A team of researchers from Nanyang Technological University and National Parks Board in Singapore has discovered that certain tropical plant species can absorb and remove toxic heavy metals and metalloids from contaminated soil. The study identified 12 plant species effective for phytoremediation, including Cow Grass, Brake Fern, and I...
Researchers used machine learning to predict the most important factors underlying heavy metal pollution remediation in biochar-treated soils. Biochar nitrogen content and application rate were found to be the most crucial features in determining HM immobilization, with soil properties also playing a significant role.
Researchers have created a novel sorbent that effectively removes copper and zinc from water solutions, with the ability to be reused for efficient treatment of industrial wastewater and drinking water. The sorbent's adsorption properties were enhanced through modification, allowing for up to 60% removal of heavy metals within minutes.
Researchers from Xi'an Jiaotong-Liverpool University provide valuable insights on managing C&D waste and reducing carbon emissions in building refurbishment projects. By upcycling generated waste, carbon emissions can be significantly reduced, with a potential reduction of around 40% compared to traditional practices.
Researchers have found toxic and carcinogenic contaminants in untreated fracking wastewater samples, including organic chemicals and metallic elements. The study provides critical information for regulatory agencies to fine-tune guidelines on safe treatment and disposal of fracking wastewater.
Researchers found that soil pH and total cadmium are key factors controlling cadmium uptake in cacao beans. Liming soils can increase yield while reducing cadmium content, but access to lime may be limited for smallholder farmers.
A new study from the University of Illinois reveals that nearly all soil samples in Chicago contain high levels of lead, with some areas reaching up to 3,000 ppm. The findings highlight the need for further monitoring and mitigation efforts to address environmental justice concerns.
A new meta-analysis of available literature on ALS disease has identified a group of seven environmental chemicals as correlates with increased risk of developing ALS. Exposure to these chemicals, including BMAA and heavy metals, may be contributing to the disease burden in certain regions.
A new study reveals that cannabis plants can absorb heavy metals from the soil, making them potentially toxic for consumers. The research proposes strategies for growers to avoid heavy metal uptake in their crops, including choosing farmland with low heavy metal content and selecting varieties not bred for phytoremediation.
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.
Researchers at MIT and UNH find that binary neutron star mergers produce two to 100 times more heavy metals than neutron star-black hole mergers. The study suggests that binary neutron stars are a likely cosmic source for gold, platinum, and other heavy metals.
Researchers have developed a flexible and wearable X-ray detector using metal-organic frameworks (MOFs) that don't contain harmful heavy metals. The device shows high-sensitivity sensing and imaging capabilities, making it suitable for various radiation monitoring and medical imaging applications.
Scientists developed zinc-modified aluminum oxide membranes for heavy metal removal, achieving high efficiency rates. The membranes showed antifouling properties and were reusable up to three cycles.
Diversifying seafood with multiple species can increase nutrient intake targets and reduce required portion sizes for key nutrients like calcium, iron, zinc, and fatty acids. However, this increased biodiversity also raises concerns about higher exposure to different heavy metals in various seafood species.
A recent study found that China's Clean Air Act led to a significant decline in atmospheric deposition of heavy metals, with beneficial effects on soil pollution. The act reduced fine particles and sulfate aerosols, resulting in lower levels of toxic metals like cadmium in the environment.
Researchers developed a nanopowder made of sodium titanate nanofibers that can efficiently capture Co2+ ions, increasing surface area for improved removal efficiency. The seaweed-like morphology enhances the filter's ability to remove hazardous heavy metals and radionuclides from water.
A study found that dairy cows exposed to contaminated water carried more pathogens with antimicrobial-resistance genes, which can tolerate various antibiotics. The research highlights a threat to human health and supports the World Health Organization's declaration of antimicrobial resistance as a global public health threat.
Residents of Kabwe Town, Zambia, exhibit high blood levels of lead and cadmium, leading to clinical symptoms of toxicity. The study found significant correlations between metal exposure and health effects, particularly in adults.
Researchers used Moscow as an example and found that not only polluted downtown districts but also recreational parks and forest zones can be hazardous. Soil samples were analyzed for heavy metal pollution and their ability to bind down contaminants, revealing a significant risk in green suburbs.
Research reveals that babies born with higher levels of cadmium may be at increased risk of developing childhood asthma and allergies. Cadmium exposure has been found to interfere with immune systems and increase allergic reactions.
Researchers at Far Eastern Federal University propose controlling spin-electronic properties of thin-film magnetic nanosystems through surface roughness. This approach maximizes useful spin-electron effects, enabling the development of new-generation tiny electronics and superfast computer memory.
Soil enzymes play a crucial role in chemical reactions, cellular metabolism, and organic matter decomposition. Heavy metals like lead and cadmium reduce enzyme activity by 3-3.5 times, particularly affecting carbon and sulfur cycles.
Available data indicate heavy metal levels in some Alaskan soils often exceed average US levels, with critical gaps in monitoring due to limited publicly available data. The study highlights the need for further sampling near human populations and in permafrost-heavy regions to clarify exposure risks.
A study by Curtin University found that tiger snakes living in Perth's urban wetlands are accumulating toxic heavy metals in their livers, suggesting habitat contamination. The snakes' bioaccumulation of heavy metals through eating frogs indicates the wetlands' pollution levels are a concern for local biodiversity.
Researchers at Nagoya University have developed a one-step fabrication process that enhances the ability of nanocarbons to remove toxic heavy metal ions from water. The new method involves adding amino groups to the nanocarbons, which forms stronger chemical bonds with the heavy metals.
Researchers discovered that a single soft x-ray can destroy a protein-sized molecule by inducing radiation damage in neighboring atoms. The findings could lead to safer medical imaging and a better understanding of heavy metals' electronic properties.
A new device called SEPSTAT can absorb trace contaminants from water and preserve them in a dry state, allowing for easy mail-in testing. This technology has the potential to improve water quality monitoring, particularly in resource-constrained regions.
A new study by New York University researchers reveals that flame retardants and pesticides are now the leading causes of IQ loss in children, outweighing heavy metals. The study found that over 1 million children suffered from intellectual disability between 2001 and 2016 due to exposure to these toxic chemicals.
A team of Florida State University researchers discovered that microwave treatment can remove three times the amount of lead from biosolids compared to conventional methods. This innovative process could reduce processing costs by over 60% and make biosolids safer for use in agriculture.
The study reveals that hot Jupiter WASP-121b is losing its hydrogen and helium atmosphere due to strong gravity, allowing heavier elements like magnesium and iron to escape. The observations provide insights into the planet's extreme environment and its potential for hosting life.
Astronomers observe WASP-121b, a scorching hot exoplanet losing its atmosphere and emitting heavy metals like iron and magnesium. The planet's extreme conditions make it an ideal target for studying the physics of ultra-hot Jupiters.
A research team at Stanford University has developed a new method to clean contaminated soils by rinsing them with a mixture of water and EDTA, a chemical that attracts heavy metals. The process involves percolating the mixture through the soil, collecting the toxic brew, and filtering it to capture the heavy metals.
Researchers have discovered the history of hundreds of lost WWII-era uranium cubes from Germany, which were part of a secretive and ultimately failed effort to build a working nuclear reactor. The findings highlight the differences between German and American nuclear research programs, with the former being divided and competitive.
Researchers found elevated levels of heavy metals and signs of illness in green sea turtle populations affected by human activity. The study suggests a link between environmental toxins and poor health, highlighting the need for conservation efforts to protect these endangered species.
Researchers discovered high concentrations of toxic heavy metals in blood samples from Great white sharks in South Africa. The study found no adverse effects on the sharks' immune system despite the presence of these toxins.
Researchers tested three types of food-grade diatomaceous earth used to filter beer and wine, finding that all contained arsenic and smaller amounts of lead and cadmium. Altering filtering conditions or washing the DE before use reduced arsenic transfer.
A University of Toronto Engineering study found that dust in Fort McMurray homes contained normal levels of contaminants comparable to Canadian homes. The team collected dust from over 60 homes and reported lower levels of toxic substances than health guidelines, with some chemicals even higher in Toronto homes.
Researchers at Chalmers University of Technology have developed a new electrochemical process to clean mercury from water, reducing its content by over 99%. The technique uses a platinum electrode to form an alloy with mercury, creating a stable and recyclable material.
Researchers found that higher lead and mercury levels in the blood were associated with increased levels of bad cholesterol and total cholesterol. The study suggests a potential link between heavy metal exposure and cardiovascular disease.
A study of nearly 2,000 individuals found that cadmium exposure was associated with increased risk of impaired contrast sensitivity. The findings suggest that common sources of cadmium inhalation, such as cigarette smoke and green leafy vegetables, may contribute to decreased visual acuity.
Researchers found that various fruit and vegetable peels effectively removed pollutants like dyes and heavy metals from water. The study, led by Cindy Samet, expanded on previous research using avocado peels to remove pollutants, and discovered the potential of other peels like lemon seeds to achieve near-100% removal rates.
A new technique using sound waves to levitate water droplets improves the detection of heavy metal contaminants like lead and mercury. The method, combining laser-induced breakdown spectroscopy (LIBS), can detect very low levels of contaminants in real-time on-site.
Researchers have developed a new method for removing heavy metals like lead and mercury from water using metal organic frameworks (MOFs). The MOF composite can quickly and selectively remove high amounts of toxic materials from real-world water samples, down to levels deemed drinkable by health organizations.
Researchers developed a water-stable MOF/polymer composite that can remove over 1.6 times its own weight of mercury and 40% of its weight in lead from contaminated water samples. The material was tested in solutions with lead levels similar to those found in Flint, Michigan, and reduced lead concentrations to 2 parts per billion.
Researchers have discovered the molecular processes that allow bacteria to extract valuable trace elements from heavy metal compounds without poisoning themselves. The process results in the formation of tiny gold nuggets.
Researchers at ETH Zurich developed a simple yet effective hybrid filter that can remove heavy metals, radioactive waste, bacteria, and other toxic substances from polluted water. The membrane is made of denatured whey proteins and activated charcoal and has been patented in 90 countries.
Researchers found that biochar application successfully reduced soil acidity and made heavy metals less bioavailable, converting them into less toxic forms. This locally sourced biochar can be used to prevent metal accumulation in soils near abandoned mines, potentially reviving degraded ecosystems.
The common periwinkle has evolved a unique strategy for detoxifying heavy metals, featuring a three-domain metallothionein with increased binding capacity. This adaptation enables the snail to thrive in polluted environments.
Brown University researchers demonstrate the efficacy of using herbaceous plant specimens from the late 19th century to track changes in heavy metal concentrations over time. Despite challenges, including mercury contamination, they show significant reductions in lead concentrations and highlight broader trends in heavy metal accumulat...
Tiny, glowing crystals can selectively capture heavy-metal toxins like lead and mercury from water sources, making them a promising tool for cleaning up contaminated drinking water. The LMOFs' open framework allows them to take in large amounts of contaminants, and they can be reused multiple times.
Researchers found that Arabidopsis halleri rockcress can accumulate high levels of toxic heavy metals like zinc and cadmium in its leaves. This adaptation may help clean soils contaminated with these pollutants through phytoremediation.
The study found that glutathione reduces uranium's chemical toxicity, allowing cells to grow and resist contamination. This discovery is crucial for innovative biological decontamination strategies, particularly in bioremediation of mining waste piles.
Researchers at JMU successfully stabilize beryllium in its elemental state, marking a significant step towards developing alternatives to toxic heavy metals. This achievement opens up new possibilities for catalyzing challenging chemical reactions with abundant main group elements.
Researchers at RMIT University have discovered that fired-clay bricks infused with just 1% cigarette butt content can significantly reduce energy needs, cut costs, and minimize environmental pollution. This innovative solution has the potential to offset global cigarette production and tackle the growing problem of littering.
A new study finds that probiotic bacteria can reduce cadmium absorption in the intestines of mice by mitigating oxidative stress. The research provides evidence that probiotics can inhibit the toxic effects of cadmium on the gut barrier, potentially offering a solution to heavy metal contamination in public health.
The four empty lots in Chicago's South Side have poor-quality soils with high alkaline levels and excess chemicals, including lead and heavy metals. Soil testing is crucial to determine the extent of contamination and guide remediation efforts.