Separation of toxic heavy metals from its aqueous solution using environmentally benign vegetable oil as liquid membrane

Bhatluri, Kamal Kumar; Chakraborty, Sushma; Manna, Mriganka Sekhar; Ghoshal, Aloke Kumar; Saha, Prabirkumar

doi:10.1039/c5ra13260f

Cited by 24 publications

(12 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The standard deviation of such measurements set is used as the measurement error shown in Figure 8. Throughout the literature, one can find a wide range of values for the interfacial tension between sunflower oil and water [3,5,8,13]. We observe some discrepancies within the reported values, comparable to our own measurements.…”

Section: Discussionsupporting

confidence: 61%

Influence of Added Dye on Marangoni-driven Droplet Instability

Seyfert¹,

Marin²

2021

Preprint

View full text Add to dashboard Cite

Multiphase flows are challenging systems to study, not only from a fundamental point of view, but also from a practical one due to the difficulties in visualizing phases with similar refraction indices. An additional challenge arises when the multiphase flow to be observed occurs in the sub-millimetric range. A common solution in experimental fluid dynamics is the addition of a color dye for contrast enhancement. However, added dyes can act as surface-active agents and significantly influence the observed phenomena. In the recently reported Marangoni bursting phenomenon, where a binary droplet on top of an oil bath is atomized in thousands of smaller droplets by Marangoni stresses, visualization is particularly challenging and the use of color dyes is naturally tempting. In this work, we quantify experimentally the significant influence of added methyl blue dye, as well as the obtained contrast enhancement. We find that the reaction of the system to such an additive is far from trivial and brings an opportunity to learn about such a complex phenomenon. Additionally, we propose a simple method to analyze the contrast enhancement as a function of dye concentration, with the aim of finding the minimum concentration of dye for successful imaging in similar systems.

show abstract

Section: Discussionsupporting

confidence: 61%

Influence of Added Dye on Marangoni-driven Droplet Instability

Seyfert¹,

Marin²

2021

Preprint

View full text Add to dashboard Cite

show abstract

“…Water/sunflower oil two-phase flow was studied in the NETmix from 2D CFD simulations with the NUB model. [20] between the phases (typical value of water/sunflower oil system) and a wall contact angle of q ow = 47°. The wall contact angle was measured from image processing and corresponds to the angle between the tangent to an oil drop in water and an acrylic surface (see Fig.…”

Section: Cfd Resultsmentioning

confidence: 99%

Computational Fluid Dynamics Model of Two‐Phase Flow in NETmix Reactors

et al. 2021

View full text Add to dashboard Cite

A computational fluid dynamics (CFD) modeling approach was developed to study the mixing of two immiscible liquids in NETmix reactors. A two-dimensional two-phase CFD model based on the Euler-Euler approach with the volumeof-fluid (VOF) method was implemented in a reduced physical domain from the imposition of periodic boundary conditions. The fluids modeled were sunflower oil and water. The VOF modeling was validated by comparison with experimental results. CFD results predicted the actual flow regimes and overall flow patterns for each phase at three Reynolds numbers. The validation demonstrated the 2D CFD model to describe the physics of two-phase flow in the NETmix reactors. This model can be applied to design studies for liquid-liquid extraction or gas-liquid reactors, where the operation flow regime is crucial.

show abstract

“…Fernandes et al studied used soybean oil as a vegetable oil that operated as an internal phase of NEs as lipid for ocular delivery [83,103]. The interfacial tension (oil and water) for soybean is 22.1 mN/m [104], its viscosity is 0.0405 Pa•s −1 at 30 • C and 0.0232 at 50 • C Pa•s −1 [105], and the density is 0.9082 and 0.9023 g/mL at 37 • C and 50 • C, respectively [106]. Soybean is a vegetable oil and results from a complex mixture of triglycerides.…”

Section: Selection Of Oil/lipidmentioning

confidence: 99%

Development and Characterization of Nanoemulsions for Ophthalmic Applications: Role of Cationic Surfactants

et al. 2021

View full text Add to dashboard Cite

The eye is a very complex organ comprising several physiological and physical barriers that compromise drug absorption into deeper layers. Nanoemulsions are promising delivery systems to be used in ocular drug delivery due to their innumerous advantages, such as high retention time onto the site of application and the modified release profile of loaded drugs, thereby contributing to increasing the bioavailability of drugs for the treatment of eye diseases, in particular those affecting the posterior segment. In this review, we address the main factors that govern the development of a suitable nanoemulsion formulation for eye administration to increase the patient’s compliance to the treatment. Appropriate lipid composition and type of surfactants (with a special emphasis on cationic compounds) are discussed, together with manufacturing techniques and characterization methods that are instrumental for the development of appropriate ophthalmic nanoemulsions.

show abstract

Separation of toxic heavy metals from its aqueous solution using environmentally benign vegetable oil as liquid membrane

Cited by 24 publications

References 20 publications

Influence of Added Dye on Marangoni-driven Droplet Instability

Influence of Added Dye on Marangoni-driven Droplet Instability

Computational Fluid Dynamics Model of Two‐Phase Flow in NETmix Reactors

Development and Characterization of Nanoemulsions for Ophthalmic Applications: Role of Cationic Surfactants

Contact Info

Product

Resources

About