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.
Illergård says the fibres are dipped in a positively-charged polymer solution that makes the surface becomes positively charged. Bacteria and viruses are negatively charged and therefore stick to the positively-charged polymer surface. From there, they cannot free themselves and reproduce, and as a result they die.
“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.
Receive an email update when we add a new WATER PURIFICATION article.
The Latest on: Water purification
via Google News
The Latest on: Water purification
- Detroit water sues over port authority's $1.1M unpaid bill, but keeps water onon July 9, 2020 at 9:43 am
Activists are criticizing the water department for going easy on businesses while residents face shutoffs for unpaid bills.
- Gulf Coast Water Authority, TX -- Moody's confirms the A1 rating on Gulf Coast Water Auth., TX's Ser. 2011A & 2011B revenue bondson July 9, 2020 at 8:26 am
Moody's confirms the A1 rating on Gulf Coast Water Auth., TX's Ser. New York, July 09, 2020 -- Moody's Investors Service has confirmed the A1 rating on the Gulf Coast Water Authority TX's (GCWA) Water ...
- Electro-oxidation process can revolutionize the field of wastewater treatmenton July 9, 2020 at 8:17 am
Pesticides, pharmaceutical products, and endocrine disruptors are some of the emerging contaminants often found in treated domestic wastewater, even after secondary treatment.
- Using electricity to break down pollutants left over after wastewater treatmenton July 9, 2020 at 6:49 am
Pesticides, pharmaceutical products, and endocrine disruptors are emerging contaminants often found in treated domestic wastewater, even after secondary treatment. Professor Patrick Drogui of the ...
- Solar-Powered Nanotubes Could Bring Water to the Worldon July 9, 2020 at 6:13 am
They combined wood, natural bacteria, and carbon nanotubes to make a filtration surface. The materials naturally grow together into a cohesive structure that performs efficiently. Could a ...
- City taps to run dry as repairs on water plant starton July 9, 2020 at 3:54 am
Major parts of Nairobi will from today experience dry taps due to the shutdown of Ng’ethu treatment works. The interruption in water supply will commence at 6am today to Friday, July 10 ...
- Water Purifiers Market in Malaysia, 2025 - Featuring Cowa, Cuckoo Int'l, Aqua Kent RO, NEP Holdings, 3M, Amway and Moreon July 9, 2020 at 3:50 am
For more information about this report visit https://www.researchandmarkets.com/r/eku5i7 Research and Markets also offers Custom Research services providing focused, comprehensive and tailored ...
- $100M in funding approved for Hampton Roads water improvement projectson July 9, 2020 at 3:43 am
SWIFT is a water purification project in eastern Virginia that seeks to ensure a sustainable source of groundwater to meet current and future needs in the region. The project takes HRSD’s ...
- Evaluation of COVID-19 Effect: Declining Oil & Natural Gas Production to Impact Sales of Produced Water Treatment Systems - Future Market Insightson July 8, 2020 at 3:50 am
Major produced water treatment systems companies are investing in research and development activities for cost-effective waste water treatment solutions during the crisis period. DUBAI / ACCESSWIRE / ...
via Bing News