From Figure 2 a, it can be clearly seen that with the gradual increase in concentration, the scale inhibition efficiency of PASP and PASP/5–AVA on CaCO 3 showed a trend of gradual improvement up to the concentration of 40 mg/L when the scale inhibition efficiency of both reached the maximum value.
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The sentences
The above results indicated that with the increase in temperature, the inhibition efficiency of both PASP and PASP/5–AVA on the CaCO 3 scale showed a decreasing trend.