While Australia’s rich stocks of raw mineral resources have contributed to the nation’s wealth and given us a competitive advantage we are also one of the highest waste producing nations in the world (on a per capita basis).
In 2009-10 we dumped 21.6 million tonnes of household and industrial waste in 918 landfill sites around Australia. Of all the waste we produced we recycled only about half (52%).
But can we do things differently? Can we change our production and consumption patterns to generate wealth from what we currently designate as waste?The potential exists
Consider e-waste, which is the old TVs, DVDs, computers, household appliances and other electrical goods that we throw away. This type of waste has emerged as one of our fastest growing waste streams but only about 10% is recovered or recycled.
But e-waste devices also include valuable metals such as copper, silver, gold, palladium and other rare materials which means they are also ending up in landfill.
By 2008 we had already sent some 17 million televisions and 37 million computers to landfill, according to the Australian Bureau of Statistics (ABS).
But if 75% of the 1.5 million televisions discarded annually could be recycled we could save 23,000 tonnes of greenhouse gas emissions, 520 mega litres of water, 400,000 gigajoules of energy and 160,000 cubic metres of landfill space.
Another way of looking at this is to compare gold yielded from an open pit mine with that from discarded electrical goods. Mining yields 1 to 5 grams of gold for every one tonne of ore. From the same quantity of discarded mobile phones and computer circuit boards, you can extract 350 grams and 250 grams respectively.