From the perspective of minimizing reagent use while maximizing recovery, it is noteworthy that the traditional emulsion binders all reach a plateau in talc recovery at ∼80% by 15 g binder (i.e., 20 and 25 g of binder do not increase the amount of talc recovered). While this also appears to be the case for R2 and R3, R1 demonstrates an increasing trend in talc recovery to ∼90% at 25 g emulsion binder.
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