Many studies have focused on such waste treatment and recovered some value-added compounds. But is there anyone who knows what the bottle neck for such processes? What about the state of the art of these?
Shyam Lakshmanan
There are industries that use solvents to extract the remaining oil in spent bleaching earth. There is typically 20+% oil content in the SBE.
Then the deoiled BE is fed into a waste heat boiler to burn the remaining oil to generate steam for the process.
The current concern may be to find an application for the deoiled clay after it has been fired in the boiler.
May be a great idea to explore reactivating this clay to produce bleaching earth!
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