Next Article in Journal
Biotechnological Transformation of Hydrocortisone into 16α-Hydroxyprednisolone by Coupling Arthrobacter simplex and Streptomyces roseochromogenes
Next Article in Special Issue
Membrane-Supported Layered Coordination Polymer as an Advanced Sustainable Catalyst for Desulfurization
Previous Article in Journal
Tannin-Based Hybrid Materials and Their Applications: A Review
Due to scheduled maintenance work on our core network, there may be short service disruptions on this website between 16:00 and 16:30 CEST on September 25th.
Article

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

1
Department of Chemical Engineering, Ilam University, Ilam 69315-516, Iran
2
National Research Council of Italy, Institute on Membrane Technology (CNR-ITM), 87036 Rende (CS), Italy
3
Department of Environmental Engineering, University of Calabria, I-87036 Rende (CS), Italy
4
Department of Chemical Engineering, Iran University of Science and Technology, Tehran 16846-13114, Iran
5
Department of Chemical Engineering, Faculty of Sciences and Technology, University of Coimbra, 3030-790 Coimbra, Portugal
*
Authors to whom correspondence should be addressed.
Academic Editors: Carlo Santoro, Jonathan Albo and Marcello Brigante
Molecules 2020, 25(21), 4911; https://doi.org/10.3390/molecules25214911
Received: 2 July 2020 / Revised: 2 October 2020 / Accepted: 21 October 2020 / Published: 23 October 2020
This study presents an efficient and scalable process for removing the heat-stable salts (HSS) ions from amine solution while recovering methyl diethanolamine (MDEA) solution for its reuse in gas sweetening plants. The presence of HSS in the amine solution causes the loss of solvent capacity, foaming, fouling, and corrosion in gas sweetening units so their removal is crucial for a more well-performing process. Furthermore, the recovery of the amine solution can make the sweetening step a more sustainable process. In this study, for the first time, the removal of a multicomponent mixture of HSS from MDEA solution was investigated via a nanofiltration process using flat-sheet NF-3 membranes. The impact of operating parameters on salts and amine rejection, and flux, including the operating pressure, HSS ions concentration, and MDEA concentration in the feed solution was investigated. Results based on the nanofiltration of an amine stream with the same composition (45 wt.% MDEA solution) as that circulating in a local gas refinery (Ilam Gas refinery), demonstrated a removal efficiency of HSS ions in the range from 75 to 80% and a MDEA rejection of 0% indicating the possibility of reusing this stream in the new step of gas sweetening. View Full-Text
Keywords: amine purification; negative surface membrane; heat stable salts removal; amine rejection; nanofiltration membrane amine purification; negative surface membrane; heat stable salts removal; amine rejection; nanofiltration membrane
Show Figures

Figure 1

MDPI and ACS Style

Ghorbani, A.; Bayati, B.; Poerio, T.; Argurio, P.; Kikhavani, T.; Namdari, M.; Ferreira, L.M. Application of NF Polymeric Membranes for Removal of Multicomponent Heat-Stable Salts (HSS) Ions from Methyl Diethanolamine (MDEA) Solutions. Molecules 2020, 25, 4911. https://doi.org/10.3390/molecules25214911

AMA Style

Ghorbani A, Bayati B, Poerio T, Argurio P, Kikhavani T, Namdari M, Ferreira LM. Application of NF Polymeric Membranes for Removal of Multicomponent Heat-Stable Salts (HSS) Ions from Methyl Diethanolamine (MDEA) Solutions. Molecules. 2020; 25(21):4911. https://doi.org/10.3390/molecules25214911

Chicago/Turabian Style

Ghorbani, Asma, Behrouz Bayati, Teresa Poerio, Pietro Argurio, Tavan Kikhavani, Marzieh Namdari, and Licínio M. Ferreira 2020. "Application of NF Polymeric Membranes for Removal of Multicomponent Heat-Stable Salts (HSS) Ions from Methyl Diethanolamine (MDEA) Solutions" Molecules 25, no. 21: 4911. https://doi.org/10.3390/molecules25214911

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop