Valorization of Crocus Sativus L waste extracts as efficient, eco-friendly and economical inhibitors of scaling: Experimental and computational investigations

housse, Mohamed El; Hadfi, Abdallah; Karmal, Ilham; Ibrahimi, Brahim El; Ben-Aazza, Said; Errami, M.; Belattar, M’barek; Mohareb, Said; Driouiche, Ali

doi:10.1016/j.molliq.2021.117718

Cited by 16 publications

(4 citation statements)

References 49 publications

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“…Thus, the excellent scale inhibition performance of s-EPS-P. putida could be due to the additional acidic functional groups. As shown in Figure 2c, the characteristic peaks at 713, 873, and 1795 cm −1 reflected the feature of calcite, 4 indicating that the CaCO 3 crystals were mainly present in calcite structure without s-EPS, whereas vaterite appeared in the presence of s-EPS, with a peak at 745 cm −14 . Compared with calcite, vaterite could be removed easily, which was beneficial in reducing scale formation.…”

Section: Characterization Of Caco 3 Crystals With S-epsmentioning

confidence: 89%

“…The more Na 2 CO 3 was consumed, the better the scale inhibition effect. 4,25 Figure 2a also reveals that the consumption of Na 2 CO 3 was more in the presence of s-EPS than in the absence of s-EPS when the conductivity decreased, indicating that s-EPS hindered the supersaturation of the CaCO 3 crystals. Moreover, the scale inhibition effect of s-EPS-P. putida was better than that of s-EPS-B.…”

Section: Functional Group Characterization Of S-epsmentioning

confidence: 95%

“…3 Corrosion and scale are usually caused by unavoidable factors in circulating cooling water, such as increased concentrations of salty substances or metal ions. 4,5 Eventually, the corrosion and scale of equipment decrease the heat exchange efficiency and cause water pollution during circulating cooling water. 6 The addition of inhibitors to circulating cooling water is considered as an effective method for inhibiting equipment corrosion and scale.…”

Section: Introductionmentioning

confidence: 99%

“…Unfortunately, equipment corrosion and scale have become unavoidable problems in circulating cooling water systems, posing safety risks during industrial production and limiting the use of circulating cooling water . Corrosion and scale are usually caused by unavoidable factors in circulating cooling water, such as increased concentrations of salty substances or metal ions. , Eventually, the corrosion and scale of equipment decrease the heat exchange efficiency and cause water pollution during circulating cooling water …”

Section: Introductionmentioning

confidence: 99%

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Roles of Microbial Extracellular Polymeric Substances in Corrosion and Scale Inhibition of Circulating Cooling Water

Gong

Song

et al. 2023

ACS EST Water

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Circulating cooling water plays a major role in petrochemical electric power, steel, metallurgical, and other industries. Corrosion and scale inhibitors in circulating cooling water systems face the challenges of high cost, low efficiency, and heavy pollution. Extracellular polymeric substances (EPS) were considered as novel, efficient, and environmentally friendly corrosion and scale inhibitors in circulating cooling water systems due to their availability, high efficiency, and lack of benefit from secondary pollution. However, roles of EPS in corrosion and scale inhibition remain unknown yet. Herein, Gram-negative (Pseudomonas putida) and Gram-positive (Bacillus megaterium) bacteria were selected to explore the corrosion and scale performance and mechanisms of soluble EPS (s-EPS). Performances of s-EPS from P. putida (s-EPS-P. putida) in corrosion and scale inhibition were obviously superior to those of s-EPS from B. megaterium (s-EPS-B. megaterium). The previously undiscovered roles of s-EPS in corrosion and scale were uncovered: (1) the chelating ability of s-EPS (mainly humic substances) prevented the formation and growth of CaCO 3 crystals; (2) s-EPS (mainly carbohydrates) formed a dense protective film by integrating with metal ions on a carbon steel surface to prevent the corrosion of A3 carbon steel. Our work provides a deeper mechanistic understanding of corrosion and scale inhibitory performances, allowing advanced development and optimization of s-EPS as a corrosion and scale inhibitor.

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Section: Characterization Of Caco 3 Crystals With S-epsmentioning

confidence: 89%

Section: Functional Group Characterization Of S-epsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Roles of Microbial Extracellular Polymeric Substances in Corrosion and Scale Inhibition of Circulating Cooling Water

Gong

Song

et al. 2023

ACS EST Water

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Plant Extracts as Scale Inhibitors

El Housse,

Hadfi,

El Ibrahimi

et al. 2024

Industrial Scale Inhibition

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Understanding and controlling chemical clogging in drip irrigation: Integrating experimental methods, density functional theory calculations and molecular dynamics simulations

Said,

Mohamed,

Abdallah

et al. 2024

Irrigation and Drainage

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The chemical clogging of water drips is the main obstacle to the adoption and spread of microirrigation technology. The aim of this research is to understand the scaling phenomenon by identifying the substances responsible for emitter clogging using a combination of different methods of characterization and to investigate the effectiveness of a new product ‘Melacide P/2’ as a calcium carbonate scale inhibitor. A non‐electrochemical method from the Laboratory of Chemistry and Genie of the Environment (LCGE) was employed to investigate the effect of the inhibitor against calcium carbonate precipitation at 25°C. X‐ray diffraction (XRD) and scanning electron microscopy (SEM) were used to study the effect of Melacide P/2 on the scale morphology and crystalline phases. Density functional theory (DFT) and Monte Carlo (MC) simulations were performed to support the experimental results. Characterization techniques revealed that the scale recovered from the drips consisted mainly of calcium carbonate, a variety of calcite. The experimental data indicate the likelihood of preventing calcium carbonate precipitation after the addition of a very small amount (0.30 mg L⁻¹) of Melacide P/2 under the conditions of the experiment. XRD and SEM revealed that the inhibitor tested has the potential to disrupt or block regular CaCO3 crystal growth and transform a more stable and adherent scale of calcite to aragonite, which is easy to eliminate. The theoretical approach adopted supports the experimental findings. Therefore, Melacide P/2 could be used as a cost‐effective green‐scale inhibitor to protect microirrigation systems from unwanted scale formation.

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Valorization of Crocus Sativus L waste extracts as efficient, eco-friendly and economical inhibitors of scaling: Experimental and computational investigations

Cited by 16 publications

References 49 publications

Roles of Microbial Extracellular Polymeric Substances in Corrosion and Scale Inhibition of Circulating Cooling Water

Roles of Microbial Extracellular Polymeric Substances in Corrosion and Scale Inhibition of Circulating Cooling Water

Plant Extracts as Scale Inhibitors

Understanding and controlling chemical clogging in drip irrigation: Integrating experimental methods, density functional theory calculations and molecular dynamics simulations

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