Environmental-friendly curcumin based fluorescent polymer for calcium sulfate scale inhibition

Li, Li; Shao, Shuyan; Li, Duanzhi; Yang, Wenzhong; Yin, Xingtian; Zhang, Yan; Chen, Yun; Liu, Ying

doi:10.1016/j.desal.2022.115804

Cited by 21 publications

(4 citation statements)

References 42 publications

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“…The CSiQDs scale inhibition rate was very high at lower temperatures, reaching 100% efficiency at a dosage of 20 ppm in 60 °C solution. The scale inhibition efficiency decreased as temperature increased due to calcium sulfate solubility reduction and the reduction in capacity and rate of CSiQDs on the calcium sulfate scale crystals, in agreement with previous temperature impact studies reported in the literature . CSiQDs exhibit effective inhibition efficiency at high temperatures regardless of the low dosage range used.…”

Section: Resultsmentioning

confidence: 99%

“…The scale inhibition efficiency decreased as temperature increased due to calcium sulfate solubility reduction and the reduction in capacity and rate of CSiQDs on the calcium sulfate scale crystals, in agreement with previous temperature impact studies reported in the literature. 37 CSiQDs exhibit effective inhibition efficiency at high temperatures regardless of the low dosage range used. The inhibitor dosage window was low, and the highest dosage used was 25 ppm, indicating that CSiQDs have promising temperature tolerance.…”

Section: Scale Inhibitionmentioning

confidence: 99%

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Carboxyl-Engineered Silicon Quantum Dots (CSiQDs) as an Efficient Scale Inhibitor: Formulation Inhibition Mechanism

Ismail,

Alshami,

Tikeri

et al. 2024

Ind. Eng. Chem. Res.

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Multiple recent initiatives have focused on developing environmentally friendly antiscalants/scale inhibitors; however, most of the investigated green antiscalants have demonstrated low scaling ion tolerance and concealed scale inhibitor-mineral crystal interaction. New fluorescent green antiscalants, due to their fluorescence properties, appear to be among the best solutions, since they both solve critical environmental issues and offer insights into the inhibition mechanism. In this work, the surface of synthesized SiQDs was engineered by introducing carboxyl moieties. The functionalized/surface engineered Carboxyl Silicon Quantum Dots (CSiQDs) were characterized in terms of FTIR, XPS, HRTEM, DLS, zeta-potential, and fluorescence properties. The characterization results confirmed successful functional tailoring through the introduction of carboxyl groups while retaining the excitation and emission properties. The performance of the engineered CSiQDs was evaluated, for the first time, using calcium sulfate scale at different brine stresses, temperatures, and pHs. The results revealed the exceptional high efficiency of the CSiQDs, reaching 100% at a 20-ppm dosage in a brine containing 6,600 ppm of calcium and sulfate ions at 70 °C. The calcium sulfate, formed in the gypsum phase, scale inhibition mechanism was investigated using fluorescence images and morphology analysis by means of XRD and SEM in the presence and absence of CSiQDs. The inhibitor is believed to affect gypsum crystal nucleation and growth. This work may lay a foundation for the rational design of next-generation nanophotonic antiscalants.

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Section: Resultsmentioning

confidence: 99%

Section: Scale Inhibitionmentioning

confidence: 99%

Carboxyl-Engineered Silicon Quantum Dots (CSiQDs) as an Efficient Scale Inhibitor: Formulation Inhibition Mechanism

Ismail,

Alshami,

Tikeri

et al. 2024

Ind. Eng. Chem. Res.

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“…35 Photoluminescence (PL) is an important property of CQDs as they are fluorescent materials. 36 In particular, water-soluble CQDs fluoresce brightly in the light and are optically stable. 37,38 Therefore, variations in the fluorescence emission intensity of the CQDs were studied at various excitation wavelengths (300-420 nm).…”

Section: Optical Properties Of Cqdsmentioning

confidence: 99%

Green synthesis of fluorescent carbon quantum dots from bagasse: inhibition of calcium sulphate scales

Yang,

Li,

Chen

et al. 2024

New J. Chem.

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“…Most of these problems could be successfully solved by the application of fluorescent-tagged antiscalants, which have gained increasing interest over the past decades [ 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 ]. Indeed, the precise monitoring of polycarboxylates is a challenge for water treatment technologies.…”

Section: Introductionmentioning

confidence: 99%

Fluorescent-Tagged Antiscalants—The New Materials for Scale Inhibition Mechanism Studies, Antiscalant Traceability and Antiscaling Efficacy Optimization during CaCO3 and CaSO4·2H2O Scale Formation

Tkachenko

Trukhina²,

Ryabova

et al. 2023

IJMS

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Equipment scaling leads to reduced production efficiency in a wide range of industrial applications worldwide. Various antiscaling agents are currently commonly used to mitigate this problem. However, irrespective of their long and successful application in water treatment technologies, little is known about the mechanisms of scale inhibition, particularly the localization of scale inhibitors on scale deposits. The lack of such knowledge is a limiting factor in the development of applications for antiscalants. Meanwhile, fluorescent fragments integrated into scale inhibitor molecules have provided a successful solution to the problem. The focus of this study is, therefore, on the synthesis and investigation of a novel fluorescent antiscalant: (2-(6-morpholino-1,3-dioxo-1H-benzo[de]isoquinolin-2(3H)yl)ethylazanediyl)bis(methylenephosphonic acid) (ADMP-F) which is an analog of the commercial antiscalant: aminotris(methylenephosphonic acid) (ATMP). ADMP-F has been found to effectively control the precipitation of CaCO3 and CaSO4 in solution and is a promising tracer for organophosphonate scale inhibitors. ADMP-F was compared with two other fluorescent antiscalants—polyacrylate (PAA-F1) and bisphosphonate (HEDP-F)—and was found to be highly effective: PAA-F1 > ADMP-F >> HEDP-F (CaCO3) and PAA-F1 > ADMP-F > HEDP-F (CaSO4·2H2O). The visualization of the antiscalants on the deposits provides unique information on their location and reveals differences in the “antiscalant-deposit” interactions for scale inhibitors of different natures. For these reasons, a number of important refinements to the mechanisms of scale inhibition are proposed.

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Environmental-friendly curcumin based fluorescent polymer for calcium sulfate scale inhibition

Cited by 21 publications

References 42 publications

Carboxyl-Engineered Silicon Quantum Dots (CSiQDs) as an Efficient Scale Inhibitor: Formulation Inhibition Mechanism

Carboxyl-Engineered Silicon Quantum Dots (CSiQDs) as an Efficient Scale Inhibitor: Formulation Inhibition Mechanism

Green synthesis of fluorescent carbon quantum dots from bagasse: inhibition of calcium sulphate scales

Fluorescent-Tagged Antiscalants—The New Materials for Scale Inhibition Mechanism Studies, Antiscalant Traceability and Antiscaling Efficacy Optimization during CaCO3 and CaSO4·2H2O Scale Formation

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