A Comparative Performance Evaluation of Some Novel “Green” and Traditional Antiscalants in Calcium Sulfate Scaling

Table 2

Inhibitor relative performance (, %) in a NACE calcium sulfate supersaturated solution.

Inhibitor	Final solution pH	Inhibitor dosage, mg·dm^−3
		0.5	3.0
		, %
PASP	6.3	81 ± 2	100 ± 2
PESA	6.1	90 ± 3	100 ± 2
MA-AA	6.4	100 ± 2	100 ± 2
PAAS	6.3	43 ± 2	100 ± 2
ATMP	6.0	100 ± 2	100 ± 2
PBTC	6.0	41 ± 4	78 ± 5
HEDP	5.9	40 ± 4	52 ± 3

Mean arithmetic values from two replicate runs.