Influence of alternating electromagnetic field and ultrasonic on calcium carbonate crystallization in the presence of magnesium ions

Han, Yong; Zhang, Chuanxin; Wu, Leichao; Zhang, Qianrui; Zhu, Lin; Zhao, Ruikuan

doi:10.1016/j.jcrysgro.2018.07.037

Cited by 38 publications

(13 citation statements)

References 39 publications

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“…The application of the magnetic field to the walls of these pipes magnetized the circulating water and eliminated the mineral deposits. These observations corroborate with several studies that use the magnetic field to reduce salt scale on surfaces, consolidating the use of this method in industrial water treatment as an antifouling strategy. ,− …”

Section: Strategies To Reduce Biofouling In Cooling Water Systemssupporting

confidence: 86%

Industrial Cooling Systems and Antibiofouling Strategies: A Comprehensive Review

Proner

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Veiga

et al. 2021

Ind. Eng. Chem. Res.

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The biofouling on cooling systems surfaces is one of the major problems in industrial processes because it causes operational drawbacks that interfere in the process performance. The application of biofouling control methods is essential in cooling system operation to minimize biofilm formation on the equipment surfaces, thus maintaining energy demand, increasing operational performance, and providing cost savings. In this context, this work presents a literature review on strategies to control biofilm on surfaces using chemical and physical methods, improving the understanding of the biofouling formation mechanism, and the adverse effects on industrial cooling system equipment. This review examines the chemical and physical methods efficiently employed as antibiofouling strategies for cooling systems, theoretical framework, recent research findings, antimicrobial mechanisms involved, advantages, limitations, feasibility, and operational range. A comparison between chemical and physical methods is highlighted, as are gaps in the literature concerning antibiofouling strategies for the surfaces of cooling systems.

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Section: Strategies To Reduce Biofouling In Cooling Water Systemssupporting

confidence: 86%

Industrial Cooling Systems and Antibiofouling Strategies: A Comprehensive Review

Proner

Meneses

Veiga

et al. 2021

Ind. Eng. Chem. Res.

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“…There are relatively mature techniques for controlling the scaling on heat-exchange surfaces, such as cooling water pipes [11]. The commonly used scaling-control methods can be divided into chemical and physical methods, including the use of scale inhibitor, dilute acid, ion-exchange resin, ultrasonic descaling device, magnetization treatment, membrane treatment, electrostatic water treatment, and so on [12][13][14][15]. Chemical scale inhibitors are the most widely used scale-inhibition method in industrial production.…”

Section: Introductionmentioning

confidence: 99%

Formation and Inhibition of Calcium Carbonate Crystals under Cathodic Polarization Conditions

Sheng

Huang

et al. 2020

Crystals

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The formation of CaCO3 crystals on the cathode surface and the scale-inhibition performance of scale inhibitor 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTCA) on the cathode surface were studied by methods of solution analysis, gravimetric analysis, SEM, FTIR, and XRD techniques. They were then compared with the results of the formation and suppression of CaCO3 crystals in aqueous solution. PBTCA had a good solution-scale-inhibition performance and good lattice-distortion effects on CaCO3 crystals in solution, which could change the CaCO3 from calcite to vaterite and aragonite crystals. The solution-scale-inhibition efficiency exceeded 97% when the PBTCA concentration reached 8 mg/L. Under cathodic polarization conditions, the surface-scale-inhibition efficiency of the cathode and solution-scale-inhibition efficiency near the cathode surface both exceed 97% at polarization potential of −1V. The addition of PBTCA significantly reduced the amount of CaCO3 crystals formed on the cathode surface and had good surface and solution-scale-inhibition effect. However, the lattice-distortion effect of PBTCA on CaCO3 crystals disappeared on the cathode surface, and the resulting CaCO3 contained only calcite crystals. The high-scale-inhibition effect of PBTCA under cathodic polarization was mainly due to the inhibition of the formation of calcium carbonate crystals by PBTCA, and not because of the lattice distortion of CaCO3 crystals.

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“…Compared to untreated water, EAF treated water produced fewer crystals with much larger diameters. Han et al [130] researched the effects of Mg 2+ ions on CaCO 3 precipitation, when subjected to alternating electromagnetic field (AEMF) and ultrasonic (US) treatment. It was found that the presence of Mg 2+ ions can prolong the induction time and hinder calcium carbonate fouling.…”

Section: Fouling Inhibition and Cleaningmentioning

confidence: 99%

A Review of Crystallization Fouling in Heat Exchangers

et al. 2021

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A vast majority of heat exchangers suffer from unwanted deposition of material on the surface, which severely inhibits their performance and thus marks one of the biggest challenges in heat transfer. Despite numerous scientific investigations, prediction and prevention of fouling remain unresolved issues in process engineering and are responsible for large economic losses and environmental damage. This review article focuses specifically on crystallization fouling, providing a comprehensive overview of the state-of-the-art of fouling in heat exchangers. The fundamentals of the topic are discussed, as the term fouling resistance is introduced along with distinct fouling behaviour, observed in laboratory and industrial environments. Insight into subsequent phases of the fouling process is provided, along with the accompanying microscale events. Furthermore, the effects of fluid composition, temperature, flow velocity, surface condition, nucleate boiling and composite fouling are comprehensively discussed. Fouling modelling is systematically reviewed, from the early work of Kern and Seaton to recently used artificial neural networks and computational fluid dynamics. Finally, the most common fouling mitigation approaches are presented, including design considerations and various on-line strategies, as well as off-line cleaning. According to our review, several topics require further study, such as the initial stage of crystal formation, the effects of ageing, the interplay of two or more fouling mechanisms and the underlying phenomena of several mitigation strategies.

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Influence of alternating electromagnetic field and ultrasonic on calcium carbonate crystallization in the presence of magnesium ions

Cited by 38 publications

References 39 publications

Industrial Cooling Systems and Antibiofouling Strategies: A Comprehensive Review

Industrial Cooling Systems and Antibiofouling Strategies: A Comprehensive Review

Formation and Inhibition of Calcium Carbonate Crystals under Cathodic Polarization Conditions

A Review of Crystallization Fouling in Heat Exchangers

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