A few months ago, the Water for Life Core Team in Chuuk, in collaboration with partners from the Pacific islands Climate Education Partnership, Island Research and Education Initiative, and Chuuk State Department of Education, put together WfL’s first education product aimed specifically at very young readers – a Chuukese book titled “Ifa Ussun Aai Tumwunuuw Inisi” (How I Take Care of Myself). This small tome highlights the importance of water in children’s daily routines.
Water for Life is featured in the May issue of the Center for Advancing Informal Science Education’s newsletter – see http://www.informalscience.org/news-views/water-life
Read all about it!
One big item from the past year has been the publication of our new Water for Life Handbook. We’ve distributed nearly 3,000 of these around the region – helpful to anyone in the Pacific Island region who wants to know more about our water issues.
More updates coming soon!
Here’s a very thought-provoking video about capturing energy from the pervasive global process of evaporation.
Ethan Allen speaks with Hydrologist/Geologist Kevin Gooding (Oceanit Laboratories) about the importance, complexities and challenges of accessing/managing the groundwater resources in Hawaii.
The following abstract describes an exciting new development that could, eventually, enhance access to clean drinking water in our islands. We’ll keep you updated on how this technology progresses.
Porous Ceramic Tablet Embedded with Silver Nanopatches for Low-Cost Point-of-Use Water Purification
Department of Civil and Environmental Engineering, University of Virginia, Charlottesville, Virginia 22904, United States
Environ. Sci. Technol., 2014, 48 (23), pp 13901–13908
Publication Date (Web): November 11, 2014
This work describes a novel method to embed silver in ceramic porous media in the form of metallic silver nanopatches. This method has been applied to develop a new POU technology, a silver-infused ceramic tablet that provides long-term water disinfection. The tablet is fabricated using clay, water, sawdust, and silver nitrate. When dropped into a household water storage container, the ceramic tablet releases silver ions at a controlled rate that in turn disinfect microbial pathogens. Characterization of the silver-embedded ceramic media was performed using transmission electron microscopy. Spherical-shaped patches of metallic silver were observed at 1–6 nm diameters and confirmed to be silver with energy dispersive spectroscopy. Disinfection experiments in a 10 L water volume demonstrated a 3 log reduction of Escherichia coli within 8 h while silver levels remained below the World Health Organization drinking water standard (0.1 mg/L). Silver release rate varied with clay mineralogy, sawdust particle size, and initial silver mass. Silver release was repeatable for daily 10 L volumes for 154 days. Results suggest the ceramic tablet can be used to treat a range of water volumes. This technology shows great potential to be a low-cost, simple-to-use water treatment method to provide microbiologically safe drinking water at the household level.
A good editorial from the journal Nature, highlighting the global issues around access to water: http://www.nature.com/news/the-rising-pressure-of-global-water-shortages-1.16622?WT.ec_id=NATURE-20141225
Here is a very useful document – http://ag.arizona.edu/region9wq/pdf/Palau_catchmentmanual.pdf – that provides good, clear information on rainwater catchment systems.
Dr. Ethan Allen discusses water with Jay Fidell on ThinkTech Hawai’i.
As we prepare for a likely drought next year, it’s well worth reviewing the great WERI (Univ. of Guam) monograph on how to build a sturdy, simple, inexpensive rainwater catchment system – see Construction of a water tank for Micronesia
And see also, for figuring areas, water needs, etc.