Country-specific carbon footprint and cumulative energy …
To model high-quality silica sand extraction rather than sand production, a drying step was added to the process. Based on those assumptions, the carbon footprint is 22.7 kg CO 2eq and CED 339 MJ per metric ton of silica sand. The drying process is only a valid assumption for quartz containing more than 98% silica. However, only a few places in ...
