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109 Current news about the topic contaminants

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Chemistry discovery could remove micropollutants from environment

Researchers made an unexpected breakthrough discovery

20-Jul-2021

Using a pioneering imaging technique, Cornell University researchers obtained a high-resolution snapshot of how ligands, molecules that bind to other molecules or metals, interact with the surface of nanoparticles. In doing so, they made an unexpected breakthrough discovery. They determined that ...

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Wastewater Treatment Using Sunlight

Ozone as a Reaction Partner

10-Nov-2020

Chemists at the Leibniz Institute for Catalysis in Rostock discovered the molecular mechanism of a photocatalyst that completely breaks down organic contaminants in wastewater with the help of sunlight. Worldwide, for example, more and more residues of drugs such as anti-inflammatory drugs, ...

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Trapping of Acetylene

Separation of Trace Acetylene from Ethylene in Ultramicroporous Metal–Organic Frameworks

31-Aug-2020

Ethylene, a key feedstock in the chemical industry, often includes traces of acetylene contaminants, which need to be removed. In the journal Angewandte Chemie, researchers describe a robust and regenerable porous metal–organic framework that captures acetylene with extraordinary efficiency and ...

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New device can measure toxic lead within minutes

Researchers create portable lab-on-a-chip that could detect many contaminants

28-Aug-2020

Rutgers researchers have created a miniature device for measuring trace levels of toxic lead in sediments at the bottom of harbors, rivers and other waterways within minutes - far faster than currently available laboratory-based tests, which take days. The affordable lab-on-a-chip device could ...

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Engineers use electricity to clean up toxic water

Powerful electrochemical process destroys water contaminants, such as pesticides

10-Jul-2020

A team of engineers may be one step closer to cleaning up heavily contaminated industrial wastewater streams. Researchers from the School of Chemical and Biomolecular Engineering developed an electrochemical oxidation process with the aim of cleaning up complex wastewater that contained a toxic ...

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House cleaning on the nanoscale

World’s smallest broom

09-Apr-2020

A team of scientists at Friedrich-Alexander Universität Erlangen-Nürnberg (FAU) has developed a novel mechanical cleaning method for surfaces on the nanoscale. The technique successfully removes even the tiniest contaminants down to the atomic scale, achieving an unprecedented level of ...

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A possible end to 'forever' chemicals

Excess electrons could help break the strong chemical bonds in products that contaminate water supplies

13-Mar-2020

Synthetic chemicals known as per- and polyfluoroalkyls, or PFAS, contain bonds between carbon and fluorine atoms considered the strongest in organic chemistry. Unfortunately, the widespread use of these nonbiodegradable products since the 1940s has contaminated many water supplies across ...

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The Secret Contamination of Polar Bears

Hundreds of unrecognized halogenated contaminants discovered in polar bear serum

05-Dec-2018

Using a new approach to measure chemical contaminants in polar bears, scientists from Canada and the United States found a large variety of new chlorinated and fluorinated substances, including many new polychlorinated biphenyl metabolites. Worryingly, these previously unrecognized contaminants ...

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Crystals that clean natural gas

31-Oct-2018

Removing the troublesome impurities of hydrogen sulfide (H2S) and carbon dioxide (CO2) from natural gas could become simpler and more effective using a metal-organic framework (MOF) developed at KAUST. Upgrading natural gas in this way could help Saudi Arabia to make greater and cleaner use of ...

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System selectively sequesters toxins from water

09-Aug-2018

Rice University scientists are developing technology to remove contaminants from water - but only as many as necessary. The Rice lab of engineer Qilin Li is building a treatment system that can be tuned to selectively pull toxins from drinking water and wastewater from factories, sewage systems ...

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