ZIF filled PDMS mixed matrix membranes for separation of solvent vapors from nitrogen

Date

2020-03-15

Author

Sahin, Fatma
TOPUZ, BERNA
Kalıpçılar, Halil

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

313
views

0
downloads

The efficiency of chemical processes can be improved by recovering high value volatile organic compounds (VOCs). For this purpose PDMS based mixed matrix membranes were prepared by using ZIF-7, ZIF-8, ZIF-67, ZIF-71 and ZIF-L as filler for VOC removal from permanent gases. Membranes were characterized by separating pure or mixed solvent vapors of methanol (MeOH), ethanol (EtOH), isopropanol (IPA), n-propanol (PrOH) and ethyl acetate (EtAc) from nitrogen. The total VOC permeability and VOC/N-2 selectivity increased with the incorporation of ZIF-L and ZIF-71, while other ZIFs had limited influence on the separation performance of membranes. ZIF-L (20% wt.)/PDMS membrane exhibited total VOC permeability of 9874 Barrer and VOC/N-2 selectivity of 45 in the separation of ethanol and IPA vapor from nitrogen in a mixture with molar composition of EtOH:IPA:N-2 = 10:10:980. Those values were higher than the permeability and selectivity of pure PDMS by 60 and 33%, respectively. ZIF-L filled PDMS membrane was also used for the separation of multicomponent mixtures and showed total VOC permeability of 10215 Barrer and VOC/N-2 selectivity of 72 in the separation of ethanol, isopropanol, ethyl acetate and water vapor mixture from nitrogen. A method was also proposed to compare the separation performance of membranes with each other and with the performance of membranes reported in the literature based on the dew point temperature of membrane streams.

Subject Keywords

Physical and Theoretical Chemistry, Filtration and Separation, General Materials Science, Biochemistry

URI

https://hdl.handle.net/11511/44781

Journal

JOURNAL OF MEMBRANE SCIENCE

DOI

https://doi.org/10.1016/j.memsci.2019.117792

Collections

Department of Chemical Engineering, Article

Suggestions

OpenMETU
Core

Development of enhanced ultrafiltration methodologies for the resolution of racemic benzoin Olceroglu, Ayse Hande; Çalık, Pınar; Yılmaz, Levent (Elsevier BV, 2008-09-15) In the scope of achieving the separation of chiral molecules, enzyme enhanced ultrafiltration (EEUF), a new method based on polymer enhanced ultrafiltration (PEUF), utilizing apoenzymes as ligands, was developed. Benzoin was chosen as the model chiral molecule. Bovine serum albumin (BSA) and apo form of benzaldehyde lyase (BAL) (E.C. 4.1.2.38) were used as chiral ligands in PEUF and EEUF experiments, respectively. In order to bind to the target enantiomer well, the addition of ligand to the benzoin solution...
Effect of operating parameters on selective separation of heavy metals from binary mixtures via polymer enhanced ultrafiltration Muslehiddinoglu, J; Uludağ, Yusuf; Ozbelge, HO; Yılmaz, Levent (Elsevier BV, 1998-03-18) Performance of continuous polymer enhanced ultrafiltration (PEUF) method was investigated for removal of mercury and cadmium from binary mixtures. This method includes the addition of polyethyleneimine (PEI) as a water soluble polymer to bind the metals, which was followed by ultrafiltration operation performed on both laboratory and pilot scale systems. The influence of various operating parameters such as temperature, metal/polymer ratio, presence of calcium ions and pH on retention of metals and permeate...
Polycarbonate-polypyrrole mixed matrix gas separation membranes Hacarlioglu, P; Toppare, Levent Kamil; Yılmaz, Levent (Elsevier BV, 2003-11-01) The gas separation properties of the polycarbonate-polypyrrole mixed matrix membranes were evaluated based on the introduction of conducting polymer as powder fillers. The electrically conductive fillers are obtained from two main synthesis routes namely electrochemical and chemical methods. The permeation properties of polycarbonate-polypyrrole systems are highly dependent on the synthesis method (electrochemical or chemical) and also the membrane casting conditions (casting solvent type). The introduction...
Thinking the future of membranes: Perspectives for advanced and new membrane materials and manufacturing processes Nunes, Suzana P.; Çulfaz Emecen, Pınar Zeynep; Ramon, Guy Z.; Visser, Tymen; Koops, Geert Henk; Jin, Wanqin; Ulbricht, Mathias (Elsevier BV, 2020-03-15) The state-of-the-art of membrane technology is characterized by a number of mature applications such as sterile filtration, hemodialysis, water purification and gas separation, as well as many more niche applications of successful membrane-based separation and processing of fluid mixtures. The membrane industry is currently employing a portfolio of established materials, mostly standard polymers or inorganic materials (not originally developed for membranes), and easily scalable manufacturing processes such...
Treatment of silk production wastewaters by membrane processes for sericin recovery Capar, Goksen; Aygun, S. Seylan; Gecit, M. Rusen (Elsevier BV, 2008-12-01) Sericin protein, although a valuable resource for many industries including cosmetics, pharmaceutical and biomedical, has been discarded as a waste in silk industry, causing environmental pollution. This paper describes determination of a membrane-based process for sericin recovery from cocoon cooking wastewaters (CCW) that will enable value-added utilization of waste sericin. The iso-electric point (pI) of sericin was found as 5-6, whose MW was distributed as 180-200, 70-80, 30-40 and 10-25 kDa. Prior to m...

Citation Formats

F. Sahin, B. TOPUZ, and H. Kalıpçılar, “ZIF filled PDMS mixed matrix membranes for separation of solvent vapors from nitrogen,” JOURNAL OF MEMBRANE SCIENCE, pp. 0–0, 2020, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/44781.