Filters

The water leaving your washing machine may soon be a lot more eco-friendly, thanks to the anchovy. A filter inspired by the tiny fish could remove microplastics from the outgoing water, keeping them from entering local waterways.

As recent history proves, airborne respiratory infections are not to be trifled with. Now, a new sprayable coating applied to standard air filters might give us a leg up in the war against the pathogens that cause these diseases.

Although HEPA filters and UV lights are effective at neutralizing bacteria in hospitals, homes and other settings, they do have their drawbacks. A new light-activated material known as LumaFlo, however, is claimed to have them both beat.

There’s no debate that microplastics present an ever-increasing ecological and health threat, but given their size, they're incredibly hard to remove from water. Now, some scientists believe sound waves and microfluidic technology may hold the key.

In countries such as India, a great deal of toxic dye waste from the textile industry is released into waterways, harming people and the environment. A new wood-derived filtration media could remove much of that dye from wastewater streams.

Microplastics are a growing environmental problem, but now researchers in Korea have developed a new water purification system that can filter out these tiny fragments, as well as other pollutants, very quickly and with high efficiency.

When cooking oil is extracted from peanuts and sunflower seeds, a waste product known as oilseed meal is left behind. New research shows that proteins harvested from that meal can be used to filter heavy metals out of contaminated water.

While certain types of filtration media are great at removing pathogens from water, they do clog up over time, slowing their rate of filtration. According to new research, a solution to the problem may lie in the use of "living filtration membranes."

As most of us have noticed over the past couple of years, face masks can sometimes be a hassle – necessary though they are. An experimental new mask, though, automatically becomes easier to breathe through when maximum air filtration isn't required.

While no one likes seeing plastic waste floating in our waterways, tiny "microplastic" particles are also a threat to the aquatic environment – and to human health. A study now suggests that nanocellulose could be used to remove them from the water.

Although we've seen several materials that are designed to remove oil from water, many of these become saturated, and have to be discarded. A new reusable membrane gets around this problem, however, by repelling oil instead of just soaking it up.

In order to reduce greenhouse gas emissions and harvest useful byproducts, scientists are increasingly investigating methods of capturing the CO2 emitted by smokestacks. A new material may make doing so easier and more efficient than ever before.