No longer viewed only as waste, used cooking oil is a common ingredient in biofuels.
Articles on Fly ash
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Pulverised fuel ash can be recycled and used to manufacture concrete as well as other products.
Cement is responsible for more than 8% of global greenhouse gas emissions. Its emissions doubled over the past two decades, and demand is still rising fast.
Cement has a huge greenhouse footprint, largely because the chemical process by which it is made releases carbon dioxide. But there are several different ways for cement to green up its act.
The ash produced by coal mining is particularly harmful to humans. There is a way to reduce that harm and use the ash effectively, though.
Top contributors
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Academic specialist, Infrastructure Engineering, The University of Melbourne
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Professor / Leader of the Environmental and Nanoscience Research Group, University of the Western Cape
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Associate Professor at the Advanced Materials Testing Centre (AMTeC), University of South Wales
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Assistant Professor of Architectural Engineering and Materials Science, University of Colorado Boulder
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Professor and Manager of the Advanced Materials Testing Centre (AMTeC), University of South Wales
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William R. Kenan, Jr. Professor of History and Environmental Studies, Amherst College