An item may sometimes be described as being a virtual item when it is a representation or non-tangible abstraction of the physical object, or is a functional emulation or simulation of it.
Although aluminium is a highly versatile and sustainable material, some of its by-products from recycling can be hazardous to the environment. An EU-funded project is developing in situ recycling technology of its waste by-products that is economical and safe for the environment.