Latest comments posted about In the developing world, a costly thirst on ChinaDialogue en-gb http://www.chinadialogue.net/article/show/single/en/2205-In-the-developing-world-a-costly-thirst http://staging.chinadialogue.net/images/cdlogo.gif http://www.chinadialogue.net/article/show/single/en/2205-In-the-developing-world-a-costly-thirst For more ideas on how to deal with public goods, I suggest reading Elinor Ostrom: Understanding Institutional Diversity Ostrom, Elinor, Princeton, Princeton University Press. 2005. or Governing the Commons: The Evolution of Institutions for Collective Action Ostrom, Elinor, Cambridge University Press, 1990 Wed, 16 Jul 2008 06:16:46 -0400 http://www.chinadialogue.net/article/summary/2205#comment-7669 http://www.chinadialogue.net/article/summary/2205#comment-7669 Pennsylvania Department of Environmental Protection study stating [Rathbun, 2004]: “the annual cost to state taxpayers for AMD remediation to be $23 million dollars a year and the estimated state wide value of sludge from these systems to contain millions of dollars in metals, yet it is handled as waste.” Results The average percent concentration of iron in the filtrate was 15% of the original concentration. The average percent concentration of sodium in the filtrate was 39% of the original concentration. The average percent concentration of zinc in the filtrate was 26% of the original concentration. The average percent concentration of sulfate in the filtrate was 37% of the original concentration. Filtration/neutralization of Microccus luteans bacteria was 9.0 E+9% Sustainability: The per unit cost and lifespan of the filter may be attractive for developing countries for both AMD and improved drinking water quality applications. Any country with existing ready mixed concrete infrastructure can produce the filter. The filter can be easily produced by manual or automated processes. liquidassetdevelopment@gmail.com US patent 20080023404 Sat, 12 Jul 2008 15:25:16 -0400 http://www.chinadialogue.net/article/summary/2205#comment-7651 http://www.chinadialogue.net/article/summary/2205#comment-7651