Canadian artist Michael de Broin has transformed a colorful collection of deceased batteries into a hedgehog-shaped orb he calls ‘Dead Star.’ The sculpture is currently on view at Eyebeam Center for Art and Technology in NYC as part of the “Untethered” show which opened last Thursday and runs until October 25th.
It’s amazing some of the sources of biofuel researchers have found in recent years. Sources range from corn stalks, to used tires, manure, and even human fat. Among the various selections, the following five sources of biofuel have shown promising potential.
Whey (cheese waste)
An interesting source of biofuel is cheese waste product – whey. DuBay Ingredients LLC, a Wisconsin company, has developed a twenty-six step process that converts whey permeate into ethanol. The process requires approximately one hundred gallons of whey (the residue remaining from milk in the cheese making process) to generate ten gallons of ethanol fuel. By using whey as a source of biofuel, dairy companies can greatly reduce their disposal costs of cheese waste. Waste is generally either shipped overseas for disposal, or disposed on location, which poses an environmental risk. DuBay, thus, can greatly reduce the costs and environmental hazard of whey management.
Professor R. Malcolm Brown Jr. and Dr. David Nobles Jr. at the University of Texas, Austin, have created a new cyanobacteria that uses sunlight to secrete cellulose, glucose, and sucrose. These sugars are the primary sources used to produce ethanol. And, unlike other sources such as corn and algae, these sugars can be directly and repeatedly harvested from the cyanobacteria without any harm to the organism. Corn and algae require destroying the organism and using enzymes to break down and extract these sugars, which is a costly process. As with many new sources of biofuel, another benefit is the reduced need for arable land to grow biofuel sources (unlike corn). (more…)
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