Scale Inhibition Performance and Mechanism of Terpolymer IA-PEG-SAMS

IF 5 3区工程技术 Q2 ENGINEERING, ENVIRONMENTAL Journal of Polymers and the Environment Pub Date : 2024-11-02 DOI:10.1007/s10924-024-03442-y

Zhuoling Xiao, Dajun Ren, Shuqin Zhang, Xiaoqing Zhang, Xiangyi Gong, Yongliang Chen

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Abstract

This research aims to develop an effective scale inhibitor to prevent calcium carbonate and calcium sulfate scaling in industrial circulating cooling water systems. Terpolymer IA-PEG-SAMS was synthesized via free-radical polymerization using itaconic acid (IA), polyethylene glycol (PEG), and sodium methacryl sulfonate (SAMS) as monomers. The optimal synthesis parameters for the terpolymer IA-PEG-SAMS were investigated using the single-factor method. FT-IR, ¹H-NMR, and GPC characterized the terpolymer and monomers obtained. The impact of various factors on calcium scale inhibition under optimal synthesis conditions was examined. The scale inhibition performance of IA-PEG-SAMS on calcium carbonate and calcium sulfate scales was compared with current commercial scale inhibitors. The findings indicated that IA-PEG-SAMS demonstrated superior efficacy in inhibiting calcium scaling compared to most commercially available scale inhibitors. The scale inhibition efficiency was 95.16% for calcium carbonate and 92.13% for calcium sulfate at 90 mg/L and 0.2 mg/L IA-PEG-SAMS concentrations. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) analyses demonstrated that IA-PEG-SAMS markedly altered the calcium scale’s morphology, crystal shape, and crystal structure. The terpolymer can effectively adsorb on the active component of calcium scale crystals and chelating calcium ions. The process involves a synergistic effect of lattice aberration and chelation solubilization, resulting in a loose and porous crystal structure of the calcium scale. The water flow can easily wash away this structure. Based on the above characteristics, the scale inhibitor shows considerable potential in water treatment.

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三元共聚物IA-PEG-SAMS阻垢性能及机理研究

本研究旨在开发一种有效的阻垢剂，以防止工业循环冷却水系统中的碳酸钙和硫酸钙结垢。以衣康酸（IA）、聚乙二醇（PEG）和甲基丙烯酸钠磺酸钠（SAMS）为单体，采用自由基聚合法制备了IA-PEG-SAMS三元共聚物。采用单因素法研究了IA-PEG-SAMS三元共聚物的最佳合成参数。FT-IR、1H-NMR和GPC对所得的三元共聚物和单体进行了表征。在最佳合成条件下考察了各种因素对钙阻垢性能的影响。比较了IA-PEG-SAMS对碳酸钙和硫酸钙垢的阻垢性能。研究结果表明，与大多数市售阻垢剂相比，IA-PEG-SAMS在抑制钙结垢方面表现出优越的功效。在90 mg/L和0.2 mg/L IA-PEG-SAMS浓度下，碳酸钙阻垢率为95.16%，硫酸钙阻垢率为92.13%。扫描电镜（SEM）和x射线衍射（XRD）分析表明，IA-PEG-SAMS显著改变了钙垢的形貌、晶体形状和晶体结构。该三元共聚物能有效吸附钙垢晶体的活性组分和螯合钙离子。这一过程涉及晶格畸变和螯合增溶的协同作用，导致钙垢的晶体结构松散而多孔。水流很容易把这个结构冲走。基于以上特点，该阻垢剂在水处理中显示出相当大的潜力。

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来源期刊

Journal of Polymers and the Environment 工程技术-高分子科学

CiteScore

9.50

自引率

7.50%

发文量

297

审稿时长

9 months

期刊介绍： The Journal of Polymers and the Environment fills the need for an international forum in this diverse and rapidly expanding field. The journal serves a crucial role for the publication of information from a wide range of disciplines and is a central outlet for the publication of high-quality peer-reviewed original papers, review articles and short communications. The journal is intentionally interdisciplinary in regard to contributions and covers the following subjects - polymers, environmentally degradable polymers, and degradation pathways: biological, photochemical, oxidative and hydrolytic; new environmental materials: derived by chemical and biosynthetic routes; environmental blends and composites; developments in processing and reactive processing of environmental polymers; characterization of environmental materials: mechanical, physical, thermal, rheological, morphological, and others; recyclable polymers and plastics recycling environmental testing: in-laboratory simulations, outdoor exposures, and standardization of methodologies; environmental fate: end products and intermediates of biodegradation; microbiology and enzymology of polymer biodegradation; solid-waste management and public legislation specific to environmental polymers; and other related topics.