Research on the Mechanism of Scale Inhibitors and Development of Enhanced Scale Inhibition Technology

IF 2.8 3区化学 Q2 POLYMER SCIENCE

Journal of Applied Polymer Science Pub Date : 2025-07-18 DOI:10.1002/app.57652

Yulun Xiao, Dajun Ren, Tengfei Liu, Zhen Wang, Min Ruan, Jun Xu, Shuqin Zhang, Xiaoqing Zhang, Xiangyi Gong, Wangsheng Chen, Baoshan Wang

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Abstract

In order to effectively solve the problem of membrane fouling, scale inhibitors are often used for scale inhibition. However, the scale inhibition mechanism of scale inhibitors has not been clearly explained, and the scale inhibition effect is not consistent with expectations. Therefore, a molecular dynamics (MD) method was used to analyze the scale inhibition mechanism of TPEG-IA-AMPS (isopentenol polyoxyethylene itaconic acid-2-acrylamide-2-methylpropanesulfonic acid) and to develop the enhanced scale inhibition technology. Meanwhile, scanning electron microscope (SEM) and x-ray diffraction (XRD) were applied to analyze the mechanism of the enhanced scale inhibition technology. The results showed that TPEG-IA-AMPS occupied the active growth sites of calcite crystals and calcium sulfate dihydrate crystals, inhibited the growth of the crystal surface, and achieved the scale inhibition effect. In addition, the enhanced scale inhibition technology can effectively solve the reverse osmosis membrane fouling problem with reduced scale inhibitor dosage, and the scale inhibition rate of calcium carbonate in reverse osmosis concentrated brine was 93.1%, and the scale inhibition rate of calcium sulfate was 97.67%.

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阻垢剂机理研究及强化阻垢技术发展

为了有效解决膜污染问题，通常采用阻垢剂进行阻垢。然而，阻垢剂的阻垢机理尚未得到明确的解释，阻垢效果与预期不一致。为此，采用分子动力学（MD）方法分析了TPEG-IA-AMPS（异戊烯醇聚氧乙烯衣通酸-2-丙烯酰胺-2-甲基丙磺酸）的阻垢机理，并开发了增强阻垢技术。同时，利用扫描电镜（SEM）和x射线衍射（XRD）分析了增强阻垢技术的机理。结果表明，TPEG-IA-AMPS占据了方解石晶体和二水硫酸钙晶体的活性生长位点，抑制了晶体表面的生长，达到了阻垢效果。此外，增强型阻垢技术可以在减少阻垢剂用量的情况下有效解决反渗透膜污染问题，碳酸钙在反渗透浓盐水中的阻垢率为93.1%，硫酸钙的阻垢率为97.67%。

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来源期刊

Journal of Applied Polymer Science 化学-高分子科学

CiteScore

5.70

自引率

10.00%

发文量

1280

审稿时长

2.7 months

期刊介绍： The Journal of Applied Polymer Science is the largest peer-reviewed publication in polymers, #3 by total citations, and features results with real-world impact on membranes, polysaccharides, and much more.