Preparation of HA/P(AM-SAS)blend and their inhibition performance of scale and corrosion

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  • 1 Electric Power College, Inner Mongolia Polytechnic University, Huhhot 010080, China;
    2 Department of Biology, Inner Mongolia Normal University, Huhhot 010022, China

Received date: 2000-10-11

  Online published: 2010-10-01

Abstract

The blends [HA/P(AM-SAS)] of humic acids(HA) and copolymer P(AM-SAS) of acrylamide(AM)and sodium allylsulfonate(SAS)have been prepared by solution blend.Their inhibition performance of scale and corrosion and dispersion performance have been studied and compared with HA and P(AM-SAS).Experimental results indicates that their scale and corrosion inhibition rates and dispersing Fe2O3capability increase with the increasing of their concentration.Compared with HA and P(AM-SAS), HA/P(AM- SAS) blends have better scale and corrosion inhibition performance and dispersion capability. During the blending of HA and P(AM-SAS) , HA and P(AM-SAS) have synergistic effects for CaCO3and Ca3(PO4)2scale inhibition when HA/P(AM-SAS)mass ratio is above 1 and 2.Under the condition:(Ca2+)=250mg/L、(HCO3-) =250mg/L、(CO32-)=85mg/L、(PO43-)=5mg/L、pH=8. 5、T=80、t=10h, the inhibition rates of HA/P(AM-SAS) blends on the CaCO3 and Ca3(PO4)2 scale are up to 98.9% and 97.2%respectively.When the dosage of HA/P(AM-SAS) blends is beyond 20mg/L, the corrosion inhibition rate on mild steel reaches95.0%.

Cite this article

QIU Guang-ming, QIU Guang-liang . Preparation of HA/P(AM-SAS)blend and their inhibition performance of scale and corrosion[J]. Industrial Water Treatment, 2001 , 21(2) : 1 -3 . DOI: 10.11894/1005-829X.2001.21(2).1

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