Deterioration effects of SiO2 nanoparticles on the mass transfer in a single drop system with resistance in both phases

Roshdi, Sepideh; Kasiri, Norollah; Rahbar-Kelishami, Ahmad

doi:10.1016/j.icheatmasstransfer.2022.106470

Cited by 5 publications

(2 citation statements)

References 48 publications

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“…Compared to nanoscale carriers, which offer large surface areas to load more enzymes [17], and with the size effect of nanoparticles, the mass transfer resistance would be reduced for the reaction [18]. However, the weak shear strength resistance property of the enzymes was not greatly improved, and the particle type of the immobilized enzymes was still difficult to apply on the RPB [15].…”

Section: Resultsmentioning

confidence: 99%

Enzyme Immobilization on Stainless Steel Fleece and Its Mass Transfer Enhancement of Enzymatic Catalysis in a Rotating Packed Bed Reactor

Yang,

Xu,

et al. 2023

Catalysts

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Rotating packed beds (RPB) facilitate the mixing of heterogeneous substrates, and promote high mass transfer efficiency in heterogeneous reactions. For the enzymatic reactions, traditional porous particles with immobilized enzymes are sensitive to the strong sheer force of the RPB, thus limiting its application. This work offers a strategy for enzyme immobilization on the surface of stainless-steel fleece, to improve the shear strength resistance of immobilized enzymes. Lipase was applied to investigate and optimize the immobilization. Finally, a fatty acid hydratase (FAH) was applied for immobilization based on the optimized method, which was further applied for evaluating its performance in RPB. The results indicated that metal immobilized enzymes resist a higher shear force than their particle-immobilized alternatives. Operating at a centrifugal force factor (β) of 30, the hydration conversion rate of 96% is achieved after 8 h, which was from nearly 38% faster than in a stirrer tank reactor (hydration yield of 60%). The metal immobilization, moreover, efficiently improved the enzyme reusability, as demonstrated by a conversion rate remaining above 90% after 15 batches. These results indicated that a metal immobilization method combined with an RPB reactor significantly increases the efficiency of enzymatic reactions.

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Section: Resultsmentioning

confidence: 99%

Enzyme Immobilization on Stainless Steel Fleece and Its Mass Transfer Enhancement of Enzymatic Catalysis in a Rotating Packed Bed Reactor

Yang,

Xu,

et al. 2023

Catalysts

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“…In the past, various experimental studies were conducted to study the liquid–liquid mass transfer based on a single droplet to better understand liquid–liquid extraction. The previous studies revealed that operating and material conditions, such as liquid pH, temperature, and contamination, influenced the mass transfer enhancement of droplets. − Some experimental efforts also demonstrated that the Marangoni effect, induced by a specific concentration, improved mass transfer due to the Marangoni convection resulting from the maldistribution of solute concentration inside droplets. , Similarly, the magnetic field, ultrasonic treatment, and nanoparticles − were introduced to enhance mass transfer. In essence, these methods enhanced or interfered with solute diffusion inside liquid droplets, accelerating the mass transfer renewal of the solute at the interface.…”

Section: Introductionmentioning

confidence: 99%

Mass Transfer Enhancement in Liquid–Liquid Extraction with Discrete Liquid Film Flow

Chang,

Zheng,

Wang

et al. 2023

Ind. Eng. Chem. Res.

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This paper presents a method to enhance the mass transfer rate in the liquid−liquid extraction process. In this method, discrete liquid films were realized by controlling the flow of the dispersed phase along a wire immersed in the continuous phase. An experimental setup was built to quantify the mass transfer of the liquid film. The results showed that liquid films increased the mass transfer efficiency by 40−65% compared to liquid droplets, enlarged the specific surface area by 53.3%−69.7%, and extended the residence time by 27.6%−51.9%. Additionally, the effects of the wire height were examined under two different wire diameters to confirm the feasibility of the new extraction method. Finally, based on the experimental data of liquid films, correlations were formulated to predict the overall mass transfer coefficient. This study opens a new direction for the development of liquid−liquid extraction technologies.

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Melting performance of Molten Salt with nanoparticles in a novel triple tube with leaf-shaped fins

Ji,

Liu,

Waqas

et al. 2024

Case Studies in Thermal Engineering

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Deterioration effects of SiO2 nanoparticles on the mass transfer in a single drop system with resistance in both phases

Cited by 5 publications

References 48 publications

Enzyme Immobilization on Stainless Steel Fleece and Its Mass Transfer Enhancement of Enzymatic Catalysis in a Rotating Packed Bed Reactor

Enzyme Immobilization on Stainless Steel Fleece and Its Mass Transfer Enhancement of Enzymatic Catalysis in a Rotating Packed Bed Reactor

Mass Transfer Enhancement in Liquid–Liquid Extraction with Discrete Liquid Film Flow

Melting performance of Molten Salt with nanoparticles in a novel triple tube with leaf-shaped fins

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