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Researchers Make Progress Toward High-Performing Water Desalination Membranes

http://www.sci-news.com/othersciences/materials/high-performing-water-desalination-membranes-09209.html

Biological membranes can achieve remarkably high permeabilities while maintaining ideal selectivities by relying on homogeneous internal structures in the form of membrane proteins. In new research, a team of scientists led by Penn State University and the University of Texas at Austin applied such design strategies to desalination polyamide membranes.

Dr. Enrique Gomez, Dr. Manish Kumar and their colleagues from Iowa State University, Penn State University, the University of Texas at Austin, DuPont Water Solutions, and Dow Chemical Co. found that creating a uniform membrane density down to the nanoscale of billionths of a meter is crucial for maximizing the performance of reverse-osmosis, water-filtration membranes.

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Scalable Water Management Solutions for Developed & Developing Cities

           

Cape Town, South Africa

meetingoftheminds.org - by Manohar Patole - April 3, 2018

The growth of urban settlements is subject to a range of factors influenced by demographic, economic, political, environmental, cultural, and social factors. Weather variability, or climate change, has recently risen up this list. These two factors: climate change and urban population growth, are dramatically affecting urban water management. On one hand, growing populations increase urban water demand and on the other, climate change has increased water variability (volume, distribution, timing and quality) . . . 

 . . . How will cities adapt? Reframe. Develop new responses.

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Desperation Mounts in Caribbean Islands: ‘All the Food Is Gone’

A street in St. Martin after Hurricane Irma. Residents spoke of a disintegration in law and order as survivors struggled in the face of severe food and water shortages. Credit Martin Bureau/Agence France-Presse — Getty Images

Image: A street in St. Martin after Hurricane Irma. Residents spoke of a disintegration in law and order as survivors struggled in the face of severe food and water shortages. Credit Martin Bureau/Agence France-Presse — Getty Images

nytimes.com - Azam Ahmed and Kirk Semple - September 10th 2017

At dawn, people began to gather, quietly planning for survival after Hurricane Irma.

They started with the grocery stores, scavenging what they needed for sustenance: water, crackers, fruit.

But by nightfall on Thursday, what had been a search for food took a more menacing turn, as groups of people, some of them armed, swooped in and took whatever of value was left: electronics, appliances and vehicles.

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Is Our Government Looking the Other Way on Contaminated Ground Water and Aquifers?

How Much Drinking Water Has California Lost to Oil Industry Waste? No One Knows

"California survived its historic drought, in large part by using groundwater. It was a lifeline in the Central Valley, where it was the only source of water for many farmers.

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Scientists Glimpse New York’s Perilous Path in an Ancient Patch of Marsh

In Pelham Bay in the Bronx, an ancient salt marsh has provided a unique laboratory to study historic sea levels and perhaps see what lies ahead. Credit Todd Heisler/The New York Times

Image: In Pelham Bay in the Bronx, an ancient salt marsh has provided a unique laboratory to study historic sea levels and perhaps see what lies ahead. Credit Todd Heisler/The New York Times

nytimes.com - January 19th 2017 - Marc Santora

Surrounded by landmarks of modernity like Co-op City in the Bronx, a sliver of New York’s ancient past remains relatively untouched.

It is one of the city’s last salt marshes, a coastal ecosystem dominated by dense and sturdy stands of plants and grasses that has been trapping and binding sediments from the flow of the tides for thousands of years.

The sediment there tells a story of the past and, according to a new study, offers a dire warning about the future that corresponds with similar research conducted around the world.

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Clean Water Crisis Threatens US

           

Aerial view overlooking landscaping on April 4, 2015 in San Diego, California.  Photo: Sandy Huffaker/Getty Images

by Sarah Ferris and Peter Sullivan - April 25, 2016

The United States is on the verge of a national crisis that could mean the end of clean, cheap water.

Hundreds of cities and towns are at risk of sudden and severe shortages, either because available water is not safe to drink or because there simply isn’t enough of it.

The situation has grown so dire the U.S. Office of the Director of National Intelligence now ranks water scarcity as a major threat to national security alongside terrorism.

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