The construction industry may recycle concrete and old road surface pavement, selling their waste materials for profit.
Legislation has also been used to increase and maintain a demand for recycled materials. Four methods of such legislation exist: minimum recycled content mandates, utilization rates, procurement policies, recycled product labeling.
The wheelie bin is a waste container on wheels designed to make it easier for users to transport heavy loads of refuse to the curb or other pick-up point. George Dempster invented the Dempster-Dumpster system in the 1930s for automatically loading the contents of standardized mobile steel containers onto the dustcart. This led to the classic Dempster Dumpmaster waste collection vehicle of the 1950s, but wheelie bins did not become commonplace until the 1970s. The term dumpster is frequently used as a generic term for a large MGB or the non-mobile variety (known as a skip in the UK or Australia) in the United States. recovery quebec
In the US residential wheelie bins are also generically called "Herbie Curbies." The modern bin is a German invention of the 1970s in a patent held by Schneider, and licensed to other companies outside Germany.
Industrialization spurred demand for affordable materials; aside from rags, ferrous scrap metals were coveted as they were cheaper to acquire than was virgin ore. Railroads both purchased and sold scrap metal in the 19th century, and the growing steel and automobile industries purchased scrap in the early 20th century. Many secondary goods were collected, processed, and sold by peddlers who combed dumps, city streets, and went door to door looking for discarded machinery, pots, pans, and other sources of metal. By World War I, thousands of such peddlers roamed the streets of American cities, taking advantage of market forces to recycle post-consumer materials back into industrial production.
The Energy Information Administration (EIA) states on its website that a paper mill uses 40 percent less energy to make paper from recycled paper than it does to make paper from fresh lumber. Some critics argue that it takes more energy to produce recycled products than it does to dispose of them in traditional landfill methods, since the curbside collection of recyclables often requires a second waste truck. However, recycling proponents point out that a second timber or logging truck is eliminated when paper is collected for recycling, so the net energy consumption is the same. An Emergy life-cycle analysis on recycling revealed that fly ash, aluminum, recycled concrete aggregate, recycled plastic, and steel yield higher efficiency ratios, whereas the recycling of lumber generates the lowest recycle benefit ratio. Hence, the specific nature of the recycling process, the methods used to analyse the process, and the products involved affect the energy savings budgets.