Highly permeable and mechanically robust silicon carbide hollow fiber membranes

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Abstract

Silicon carbide (SiC) membranes have shown large potential for applications in water treatment. Being able to make these membranes in a hollow fiber geometry allows for higher surface-to-volume ratios. In this study, we present a thermal treatment procedure that is tuned to produce porous silicon carbide hollow fiber membranes with sufficient mechanical strength. Thermal treatments up to 1500 °C in either nitrogen or argon resulted in relatively strong fibers, that were still contaminated with residual carbon from the polymer binder. After treatment at a higher temperature of 1790 °C, the mechanical strength had decreased as a result of carbon removal, but after treatments at even higher temperature of 2075 °C the SiC-particles sinter together, resulting in fibers with mechanical strengths of 30–40 MPa and exceptionally high water permeabilities of 50,000 L m−2 h−1 bar−1. Combined with the unique chemical and thermal resistance of silicon carbide, these properties make the fibers suitable microfiltration membranes or as a membrane support for application under demanding conditions
Original languageEnglish
Pages (from-to)480-487
JournalJournal of membrane science
Volume475
DOIs
Publication statusPublished - 2015

Fingerprint

Silicon carbide
silicon carbides
hollow
membranes
Membranes
fibers
Fibers
Strength of materials
Hot Temperature
Carbon
Heat treatment
Temperature
Microfiltration
water treatment
Chemical resistance
Argon
Water Purification
carbon
Porous silicon
thermal resistance

Keywords

  • IR-93129
  • METIS-307029

Cite this

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title = "Highly permeable and mechanically robust silicon carbide hollow fiber membranes",
abstract = "Silicon carbide (SiC) membranes have shown large potential for applications in water treatment. Being able to make these membranes in a hollow fiber geometry allows for higher surface-to-volume ratios. In this study, we present a thermal treatment procedure that is tuned to produce porous silicon carbide hollow fiber membranes with sufficient mechanical strength. Thermal treatments up to 1500 °C in either nitrogen or argon resulted in relatively strong fibers, that were still contaminated with residual carbon from the polymer binder. After treatment at a higher temperature of 1790 °C, the mechanical strength had decreased as a result of carbon removal, but after treatments at even higher temperature of 2075 °C the SiC-particles sinter together, resulting in fibers with mechanical strengths of 30–40 MPa and exceptionally high water permeabilities of 50,000 L m−2 h−1 bar−1. Combined with the unique chemical and thermal resistance of silicon carbide, these properties make the fibers suitable microfiltration membranes or as a membrane support for application under demanding conditions",
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author = "{de Wit}, Patrick and Emiel Kappert and T. Lohaus and Matthias Wessling and Arian Nijmeijer and Benes, {Nieck Edwin}",
year = "2015",
doi = "10.1016/j.memsci.2014.10.045",
language = "English",
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pages = "480--487",
journal = "Journal of membrane science",
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}

Highly permeable and mechanically robust silicon carbide hollow fiber membranes. / de Wit, Patrick; Kappert, Emiel; Lohaus, T.; Wessling, Matthias; Nijmeijer, Arian; Benes, Nieck Edwin.

In: Journal of membrane science, Vol. 475, 2015, p. 480-487.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Highly permeable and mechanically robust silicon carbide hollow fiber membranes

AU - de Wit, Patrick

AU - Kappert, Emiel

AU - Lohaus, T.

AU - Wessling, Matthias

AU - Nijmeijer, Arian

AU - Benes, Nieck Edwin

PY - 2015

Y1 - 2015

N2 - Silicon carbide (SiC) membranes have shown large potential for applications in water treatment. Being able to make these membranes in a hollow fiber geometry allows for higher surface-to-volume ratios. In this study, we present a thermal treatment procedure that is tuned to produce porous silicon carbide hollow fiber membranes with sufficient mechanical strength. Thermal treatments up to 1500 °C in either nitrogen or argon resulted in relatively strong fibers, that were still contaminated with residual carbon from the polymer binder. After treatment at a higher temperature of 1790 °C, the mechanical strength had decreased as a result of carbon removal, but after treatments at even higher temperature of 2075 °C the SiC-particles sinter together, resulting in fibers with mechanical strengths of 30–40 MPa and exceptionally high water permeabilities of 50,000 L m−2 h−1 bar−1. Combined with the unique chemical and thermal resistance of silicon carbide, these properties make the fibers suitable microfiltration membranes or as a membrane support for application under demanding conditions

AB - Silicon carbide (SiC) membranes have shown large potential for applications in water treatment. Being able to make these membranes in a hollow fiber geometry allows for higher surface-to-volume ratios. In this study, we present a thermal treatment procedure that is tuned to produce porous silicon carbide hollow fiber membranes with sufficient mechanical strength. Thermal treatments up to 1500 °C in either nitrogen or argon resulted in relatively strong fibers, that were still contaminated with residual carbon from the polymer binder. After treatment at a higher temperature of 1790 °C, the mechanical strength had decreased as a result of carbon removal, but after treatments at even higher temperature of 2075 °C the SiC-particles sinter together, resulting in fibers with mechanical strengths of 30–40 MPa and exceptionally high water permeabilities of 50,000 L m−2 h−1 bar−1. Combined with the unique chemical and thermal resistance of silicon carbide, these properties make the fibers suitable microfiltration membranes or as a membrane support for application under demanding conditions

KW - IR-93129

KW - METIS-307029

U2 - 10.1016/j.memsci.2014.10.045

DO - 10.1016/j.memsci.2014.10.045

M3 - Article

VL - 475

SP - 480

EP - 487

JO - Journal of membrane science

JF - Journal of membrane science

SN - 0376-7388

ER -