Researchers turn cow manure into clean water
If life gives us lemons, the saying goes, we should make lemonade. But that's not the formula applied by the University of Michigan on a colossal project and that took ten years ago: investigating the production of clean water from cow manure.The technology, made public now, extracts nutrients and pollutants from manure from cows and produces enough clean water for livestock drinking. Technology has a name â€" McLanahan Nutrient Separation System â€" and began to be developed for ten years, in American University. Is not yet at the marketing stage but, if it comes, will have a significant impact on reducing waste of agricultural holdings and resource management."In Michigan, we have a tendency to take water for granted. But in the West, for example, drought continues to be an important issue. And access to clean water can make the difference between a farm stay viable or go bankrupt, "said a professor at the University of Michigan, Steve Safferman, the site of the institution.This nutrient separator uses an anaerobic digester, in which bacteria break the manure to release gas that can be collected and used as energy. The digester is coupled to a system that combines the air extraction, ultrafiltration and reverse osmosis to remove pollutants and keep the water clean.The system not only creates energy and water from the water, but reduces the environmental impact of manure, extracting nutrients such as ammonia, which can be harmful to the environment, and turns them into usable compost.If it is tradable, this system will certainly be a success. In 2011, every American farm had averaged 179 cows. A cow produces 37,800 gallons of manure a year, scientists say, but 90% of this is water. The system capture 190 liters of clean water for every 380 gallons of manure, although the researchers themselves want to increase this number to 250 liters of water to 380 of manure.IE: If a farm accumulates 6.7 million gallons of manure per year, it can produce almost 3.4 million liters of water, almost at zero cost.According to the University, the system may start to be marketed at the end of the year. It is likely, however, that only here for many years to reach the European market â€" and Portugal..fancybox-wrap { position: absolute; top:0; left: 0; z-index: 8020; } .fancybox-skin { position: relative; /*margin-top:20px !important;*/ background: #222222; color: #74b32e; text-shadow: none; -webkit-border-radius: 2px; -moz-border-radius: 2px; border-radius: 2px; } .fancybox-opened { z-index: 8030; } .fancybox-opened .fancybox-skin { -webkit-box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5); -moz-box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5); box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5); } .fancybox-outer, .fancybox-inner { position: relative; } .fancybox-inner { overflow: hidden; } .fancybox-type-iframe .fancybox-inner { -webkit-overflow-scrolling: touch; } .fancybox-close{ background: url('wp-content/themes/codistage/styles/fancybox/exit.png') no-repeat; width:25px; height:25px; float:right; margin-top:10px; margin-right:5px; } /*.ngg-gallery-image img{width:565px; height:393px;}*/Um sistema revolucionário1of 5jQuery(document).ready(function($) { var thumbContainerWidth = 0, thumbs = Array(), selectedIndex = 1, thumbIndex = 1, imageOffset = 7; $('.ngg-gallery-thumbnail-box').each(function() { thumbs.push($(this)); }); /*thumbnail navigation */ $('.ngg-greensavers-thumb-next').unbind().bind('click', function(e) { e.preventDefault(); if(thumbIndex<= (thumbs.length-imageOffset)) { $('.ngg-thumbnails-container').stop().animate({ left : -$(thumbs[thumbIndex]).position().left }); thumbIndex++; } }); $('.ngg-greensavers-thumb-prev').unbind().bind('click', function(e) { e.preventDefault(); if(thumbIndex >1) { $('.ngg-thumbnails-container').stop().animate({ left : $('.ngg-thumbnails-container').position().left + ( $(thumbs[thumbIndex-1]).position().left - $(thumbs[thumbIndex-2]).position().left ) }); thumbIndex--; } }); $(window).load(function() { /* set thumbnail container width */ $('.ngg-gallery-thumbnail').each(function() { thumbContainerWidth = thumbContainerWidth + $(this).width() + 10; }); $('.ngg-thumbnails-container').width(thumbContainerWidth); }); });
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