期刊
DESALINATION
卷 359, 期 -, 页码 22-25出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.desal.2014.12.027
关键词
Scale inhibitor; Thermal desalination; Poly(acrylic acid); Calcium carbonate; Polymer
Seawater from the Arabian Gulf was heated under conditions simulating those of thermal desalination processes and the change in the amount of aquated Ca2+ followed over time using Inductively Coupled Plasma/Optical Emission Spectroscopy. This was done in the absence of any scale inhibitor, and in the presence of scale inhibitors: three commercial polycarboxylate products commonly employed in thermal desalination plants and four novel poly(acrylic acid) inhibitors of differing molar masses and end-group functionality. At times >2 min, the novel poly(acrylic acid) scale inhibitors of low (similar to 2000) molar mass and moderate (hexyl isobutyrate or cyclohexyl isobutyrate) end-group hydrophobicity were more effective in maintaining the aquated Ca2+ level than any commercial product. (C) 2015 Elsevier B.V. All rights reserved.
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