In this case, aluminum oxide is separated into aluminum and oxygen (Fig ... It is not that the glass cannot be endlessly recycled, it is because the color of glass cannot be changed—once it is green, ...

Q: The white coating on our aluminum trim is peeling badly in places, particularly on the sunnier side of our house. The contractor who installed the siding, windows and trim in 2009 is no longer in ...

While the red color comes from the iron oxides present, there are a lot of other materials in it, some of which can be toxic. And the process of isolating the aluminum oxide leaves the material ...