Application of NF Polymeric Membranes for Removal of Multicomponent Heat-Stable Salts (HSS) Ions from Methyl Diethanolamine (MDEA) Solutions

Ghorbani, Asma; Bayati, Behrouz; Poerio, Teresa; Argurio, Pietro; Kikhavani, Tavan; Namdari, Marzieh; Ferreira, L.M.

doi:10.3390/molecules25214911

Cited by 13 publications

(10 citation statements)

References 58 publications

(71 reference statements)

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“…NF experiments were performed at the laboratory-scale using a cell equipped with an NF-3 polyamide flat-sheet membrane (Sepro Membranes, Inc., Oceanside, CA, USA) operated in cross-flow ( Figure 1 ) (as were conducted in the preveous study [ 46 ]). The effective area was 0.0113 mThe specifications provided by the manufacturer indicated that the NF-3 polymeric membrane consists of three layers, including the polyamide surface layer, and polyester support with a polysulfone substrate.…”

Section: Methodsmentioning

confidence: 99%

“…In a study, we investigated the separation of a multicomponent mixture of HSS ions from the different concentrations of MDEA solution via NF membrane. The result showed that the separation efficiency of ions was close to 80% [ 46 ]. Also, in another work, we estimated transport parameters for a binary system of ions in amine solution through NF membrane [ 47 ].…”

Section: Introductionmentioning

confidence: 99%

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Modeling of Nanofiltration Process Using DSPM-DE Model for Purification of Amine Solution

et al. 2021

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The formation of heat stable salts (HSS) during the natural gas sweetening process by amine solvent causes many problems such as corrosion, foaming, capacity reduction, and amine loss. A modeling study was carried out for the removal of HSS ions from amine solution using nanofiltration (NF) membrane process that ensures the reuse of amine solution for gas sweetening. This model studies the physics of the nanofiltration process by adjusting and investigating pore radius, the effects of membrane charge, and other membrane characteristics. In this paper, the performance of the ternary ions was investigated during the removal process from methyl di-ethanol amine solution by the nanofiltration membrane process. Correlation between feed concentration and permeate concentration, using experimental results with mathematical correlation as Ci,p = f (Ci,f) was used in modeling. The results showed that the calculated data from the model provided a good agreement with experimental results (R2 = 0.90–0.75). Also, the effect of operating conditions (including feed pressure and feed flow rate on ions rejection and recovery ratio across the flat-sheet membrane) was studied. The results showed that the recovery and rejection ratios of the NF membrane depend on the driving pressure across the membrane. While the driving pressure is affected by the feed flow conditions and feed pressure.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modeling of Nanofiltration Process Using DSPM-DE Model for Purification of Amine Solution

et al. 2021

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“…An 80% retention of TSSs in the process of nanofiltration of a multicomponent mixture of ionic impurities in an MDEA solution was shown [105]. In their next study, the authors presented a model for the transport of TSS ions from MDEA solutions during nanofiltration for different flow rates of the initial absorbent, transmembrane pressure, and compositions of the initial absorbent [106].…”

Section: Membrane Technologies To Improve Efficiency Of Amine Co 2 Purificationmentioning

confidence: 97%

Membrane Technologies for Decarbonization

Alent’ev

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et al. 2021

Membr. Membr. Technol.

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The deteriorating environmental situation has stimulated the world community to develop research related to the decarbonization of the economy and hydrogen energy. These two areas are essentially focused on membrane technologies, which play a crucial role in solving key tasks for these areas. This review is devoted to this research. The first part describes various membrane technologies aimed at capturing CO 2 from the most common gas mixtures, primarily containing nitrogen, methane, and hydrogen. In recent years, studies related to the amine purification of CO 2 , including membrane technologies, and the use of porous membranes filled with ionic liquids has also been intensively developed. Electromembrane technologies are also being developed that allow not only capture of CO 2 but also to process it into fuel or valuable chemicals. The course taken by several developed countries, including Russia, for the development of hydrogen energy includes the production, purification of hydrogen, and its conversion into energy. It should be noted that membrane technologies are fundamentally important for the development of each of these areas. Thus, the evolution of hydrogen is possible with the use of polymer membranes, and for deep purification and production of high-purity hydrogen by membrane catalysis; membranes based on palladium alloys are used. Finally, fuel cells are developed to produce energy from hydrogen, the most important part of which are proton or oxygen-conducting membranes.

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“…There have been a number of review studies focused on the existing HSS removal methods [12][13][14]. The common method for solvent reclaiming from HSS is distillation [8,17], though alternative techniques exist and include-removal of HSS anions using ion-exchange resins [18,19], capacitive deionization [20,21], concentration of HSS using nanofiltration [22,23], and electromembrane treatment methods [24][25][26]. Direct and bipolar electrodialysis are applicable for treating MEA-based post-combustion CO 2 capture solvents [27][28][29][30][31][32] and diethylamine recovery with simultaneous acid production [33,34].…”

Section: Introductionmentioning

confidence: 99%

Perstraction of Heat-Stable Salts from Aqueous Alkanolamine Solutions

et al. 2022

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Amine absorption processes designed to remove acid gases from gas streams generally face a major challenge of solvent degradation. This degradation leads to the formation of heat-stable salts (HSS), corrosive agents that irreversibly bind free alkanolamine. The present study proposes, for the first time, a method for HSS perstraction using a liquid–liquid membrane contactor that allows HSS to transfer through porous membranes from the solvent into a hydrophobic extractant represented by a methyltrioctylammonium solution in 1-octanol. The perstraction provides selective extraction of HSS anions without direct mixing of liquid phases or the formation of stable emulsions of the solvent and the extractant. For this purpose, a number of industrial and laboratory porous membrane samples fabricated from polyvinylidene fluoride, polypropylene, and polysulfone were investigated. Their chemical and morphological stability, surface properties, and transport properties were tested under prolonged (>600 h) contact with a model solvent (an aqueous monoethanolamine solution) and with the components of the selective extractant. The feasibility of HSS perstraction was demonstrated using the formic acid (as an HSS model) extraction from the model solvent. The most promising results were obtained for a system with a polyvinylidene fluoride membrane: up to 50% of formic acid was extracted over 18 h.

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Application of NF Polymeric Membranes for Removal of Multicomponent Heat-Stable Salts (HSS) Ions from Methyl Diethanolamine (MDEA) Solutions

Cited by 13 publications

References 58 publications

Modeling of Nanofiltration Process Using DSPM-DE Model for Purification of Amine Solution

Modeling of Nanofiltration Process Using DSPM-DE Model for Purification of Amine Solution

Membrane Technologies for Decarbonization

Perstraction of Heat-Stable Salts from Aqueous Alkanolamine Solutions

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