1. Inhibition of calcium carbonate and sulfate scales by a non-phosphorus terpolymer AA-APEY-AMPS
- Author
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Wendao Wu, Yuming Zhou, Wei Sun, Yunyun Bu, Yiyi Chen, and Qingzhao Yao
- Subjects
Calcite ,Inorganic chemistry ,chemistry.chemical_element ,Ocean Engineering ,02 engineering and technology ,Calcium ,021001 nanoscience & nanotechnology ,Pollution ,chemistry.chemical_compound ,Calcium carbonate ,020401 chemical engineering ,chemistry ,X-ray crystallography ,Chelation ,Carboxylate ,0204 chemical engineering ,Sulfate ,0210 nano-technology ,Water Science and Technology ,Acrylic acid - Abstract
The inhibition of calcite crystal growth by acrylic acid-allylpolyethoxy carboxylate-2-acrylamido-2-methyl-propanesulfonic acid (AA-APEY-AMPS, PAYS for short) was investigated in the cooling-water system. The terpolymer was prepared via the copolymerization of acrylic acid (AA), allylpolyethoxy carboxylate (APEY) and 2-acrylamido-2-methyl-propanesulfonic acid (AMPS), whose structures were characterized by FTIR and 1H NMR. In this study, we have investigated the effect of the agent concentration and the ratio of the reactant. The experimental results show that AA-APEY-AMPS is an effective chelating scale inhibitor and it has high efficiency toward scales and nearly 90% for calcium carbonate and 100% for calcium sulfate. The produced crystals were characterized by using scanning electron microscopy and X-ray diffraction methods. It appears that the crystal shape, size, and the morphology of scale have changed apparently at the dosage of 5 mg/L. Based on the contrast experiment of the problem of scal...
- Published
- 2014
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