The mitigation of mineral scale continues to pose serious challenge in the efficient operation of many industrial systems. Recently, due to environmental issues relating to eutrophication and strict chemicals discharge regulations have challenged the industry to develop new environmentally friendly solutions to corrosion and scale control. Among the natural additives tested include: lignosulfonate, green tea extract, humic, tannic, and fluvic acids. The inhibitory activity of biodegradable polymer such as poly(aspartic acid), inulin-based hybrid polymers containing carboxyl (-COOH) and several synthetic homo-and copolymers containing a variety of functional groups has also been studied. The results indicated that performance of additives tested strongly depends on the inhibitor architecture. Based on the data collected, the additives may be ranked as follows: homo-> bio- > hybrid = synthetic copolymers Scanning electron microscopic and X-ray diffraction studies of the SrSO4 crystals grown in the presence of polymers show that structures of SrSO4 crystals are highly modified.

Subject
Acids, Water, Inhibitor performance, Precipitation (solids), Copolymers, Strontium, Functional groups, Sulfates, Dosages, Polymers, Scale formation, Corrosion inhibitors, Acrylics
Keywords:
strontium sulfate, precipitation, inhibition, natural, bio, synthetic polymers, functional group, crystal habit modification
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2019
Association for Materials Protection and Performance (AMPP)
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