Performance of reverse osmosis membranes in the separation of supercritical CO2 and essential oils

Sarmento, Luiz Alberto Vieira; Spricigo, Cinthia Bittencourt; Petrus, José Carlos Cunha; Carlson, Luiz Henrique Castelan; Machado, Ricardo Antônio Francisco

doi:10.1016/j.memsci.2004.02.021

Cited by 41 publications

(8 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The effect of membrane compaction may also be considered, which might have the effect of reducing the membrane pore diameter, mainly when using higher pressures. The fouling effects cannot be completely avoided, but can be reduced through the use of membranes with a proper cut-off and hydrophobicity/hydrophilicity characteristics suitable for the separation, as shown in the present work [22].…”

Section: Membrane Permeationsmentioning

confidence: 90%

Separation of Soybean Oil/n-hexane Miscellas Using Polymeric Membranes

Tres¹,

Racoski²,

Novello³

et al. 2012

JFSE

View full text Add to dashboard Cite

Separation of refined soybean oil/n-hexane miscellas was studied using different commercial ultra-and nanofiltration membranes, with cutoffs in the range of 1 to 5 kDa and salt rejection higher than 97% (MgSO 4). Commercial soybean oil and n-hexane miscellas with 1:3 and 1:1 mass ratios were permeated in a dead-end module. The effects of the feed pressure (2-25 bar) on oil and n-hexane fluxes and rejection were investigated. Oil rejection ranged from negative values to 30.8%, soybean oil flux from 28.9 to 617.8 g/m-2 h-1 and n-hexane flux from 8.5 to 1,078.5 g m-2 h-1. Membrane fouling was observed at all experimental conditions studied. The membrane separation process has proven to be a promising alternative to solvent recovery in soybean oil extraction.

show abstract

Section: Membrane Permeationsmentioning

confidence: 90%

Separation of Soybean Oil/n-hexane Miscellas Using Polymeric Membranes

Tres¹,

Racoski²,

Novello³

et al. 2012

JFSE

View full text Add to dashboard Cite

show abstract

“…Also, the membrane separation processes for biodiesel were carried out under moderate temperature and pressure conditions and their scale-up process found less cumbersome. Sarmento et al [83] critically examined the production and refining of biodiesel using membrane technology.…”

Section: Membrane Assisted Reactive Divided Wall Columnmentioning

confidence: 99%

A Review on AI Control of Reactive Distillation for Various Applications

Sakhre¹

2021

Promising Techniques for Wastewater Treatment and Water Quality Assessment

View full text Add to dashboard Cite

In this chapter, previous studies on reactive distillation process control including control using conventional as well as soft sensor control, membrane assisted reactive distillation design and simulation, estimation and control are discussed. The review of literature in different dimensions is carried out to explore the opportunities in the field of research work. The chapter is focused on dynamics and control of Reactive distillation, its control using Conventional Techniques, Model Predictive Control MPC), Reactive Distillation using Soft Sensors/Soft Controllers, Membrane assisted reactive distillation, Biodiesel in Reactive Divided Wall Column: Design and Control and Membrane reactive divided wall column. These control techniques are proposed and analyzed by many researchers. These techniques have potential use in process industries to have better soft sensor control of nonlinear processes.

show abstract

“…There are two basic principles of operation in biodiesel production via membrane technology: separation based on oil droplet size [37] or use of a catalytic membrane [38]. Membranes are generally preferred in the refining processes for the following reasons: low energy consumption, safety, simple operation, elimination of wastewater treatment, easy change of scale, higher mechanical, thermal, and chemical stability, and resistance to corrosion [39]. Nonetheless, membrane technology certainly requires further purification since the FAME-rich phase still contains methanol, glycerol, and water [35,40].…”

Section: Technologies For Biodiesel Productionmentioning

confidence: 99%

Biodiesel Production Using Solid Acid Catalysts Based on Metal Oxides

et al. 2020

View full text Add to dashboard Cite

The development of solid acid catalysts, especially based on metal oxides and different magnetic nanoparticles, gained much awareness recently as a result of the development of different nano-based materials. Solid acid catalysts based on metal oxides are promising for the (trans)esterification reactions of different oils and waste materials for biodiesel production. This review gives a brief overview of recent developments in various solid acid catalysts based on different metal oxides, such as zirconia, zinc, titanium, iron, tungsten, and magnetic materials, where the catalysts are optimized for various reaction parameters, such as the amount of catalyst, molar ratio of oil to alcohol, reaction time, and temperature. Furthermore, yields and conversions for biodiesel production are compared. Such metal-oxide-based solid acid catalysts provide more sustainable, green, and easy-separation synthesis routes with high catalytic activity and reusability than traditionally used catalysts.

show abstract

Performance of reverse osmosis membranes in the separation of supercritical CO2 and essential oils

Cited by 41 publications

References 10 publications

Separation of Soybean Oil/n-hexane Miscellas Using Polymeric Membranes

Separation of Soybean Oil/n-hexane Miscellas Using Polymeric Membranes

A Review on AI Control of Reactive Distillation for Various Applications

Biodiesel Production Using Solid Acid Catalysts Based on Metal Oxides

Contact Info

Product

Resources

About