School of Mines researchers have produced glass from food waste using a process that extracts minerals such as silica from the waste. The process requires high temperatures in a furnace which makes me skeptical as to its eventual viability and its claimed environmental benefit, but no doubt this will all be worked out as the engineers do their calculations.
I'm also skeptical about this statement:
"I mean, this was rotten garbage," Cornejo said of a 60-gram piece of clear glass. The banana, rice husk and eggshells weighed 240 grams before cooking.
This says that 25% of the mass of banana skins, eggshells and rice husks is silica, which I find difficult to believe.http://www.denverpost.com/environment/c ... bage-glass