What can the forests of Scandinavia possibly offer to migrants in faraway refugee camps?
Clean water may be one thing.
A bacteria-trapping material developed from wood by researchers at KTH Royal Institute of Technology is now being tested for use as a water purification filter. The aim is to use it in places where there is no infrastructure or clean water supply.
The material, which combines wood cellulose with a positively-charged polymer, can trap bacteria by attracting and binding the bacteria to the material surface. It shows promise for bandages, plasters and packaging that kill bacteria without releasing toxins into the environment.
Led by Professor, the researchers at KTH are investigating whether the material can enable portable on-site water treatment where no facilities or wells exist to meet demand.
“Our aim is that we can provide the filter for a portable system that doesn’t need electricity – just gravity – to run raw water through it,” says, a PhD student at KTH’s School of Chemical Science and Engineering. “The great idea is that we are trapping the bacteria and removing them from the water by our positively-charged filter. The bacteria trapping material does not leach any toxic chemicals into the water, as many other on-site purification methods do.”
Her co-supervisor,, has been working with for about a decade. “We had this fantastic material that is antibacterial and can be used in different ways, and we wanted to see how to use it in a way that truly makes a difference – a way that addresses a big problem in the world,” Illergård says.
“One of the advantages of surfaces covered with polymers is that bacteria will not develop any resistance,” she says.
After it is used, the filter can be burned.
The technology is one of several innovative ways wood-based materials are being developed at KTH, which recently has announced advances with, made from wood, wood and even a polystyrene alternative from wood.
The water filter project also is just one of the many water-related research projects ongoing at KTH, where, has been launched to stimulate cross-disciplinary collaboration and new water-related research approaches within KTH and with industry partners, other knowledge institutions and public agencies.
text by David Callahan
@This article is published by conbio.info 2017-05-12 and based on a press release which has ben edited by Lennart Ljungblom. conbio.info is focusing on news that may have an impact on bioenergy business and also bioeconomy news with impact on society and other relevant areas, on line since 2013.