Hollow-fiber-supported liquid membranes with improved stability for nitrate removal

Antonius J.B. Kemperman, Hendrikus H.M. Rolevink, Anthonie van den Boomgaard, H. Strathmann

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Abstract

This paper describes the development of a hollow-fiber-supported liquid membrane (HFSLM) for the removal of nitrate ions from water. Two different membrane modules were designed which differed in length of the fibers. In order to test the HFSLMs on nitrate flux and stability, two set-ups were used: one in which feed and strip were recirculated, and one for the continuous removal of nitrate. Furthermore, part of the experiments were carried out using fibers with a toplayer of piperazine and trimesoyl chloride at the lumen side to increase the stability of the HFSLM. Nitrate fluxes of the HFSLMs were only slightly lower than those of flat-sheet SLMS despite the much larger thickness of the fiber wall. In both set-ups, the nitrate flux decreased in time. By applying a toplayer on the lumen side of the fibers, the lifetime of the liquid membrane was raised. SEM observations showed the toplayer, although defect-free, to be nonuniform in morphology, which resulted in difficulties in the reproducibility of the results.
Original languageUndefined
Pages (from-to)119-135
JournalSeparation and purification technology
Volume1997
Issue number12-2
DOIs
Publication statusPublished - 1997

Keywords

  • METIS-106182
  • Hollow fibers
  • Liquid membranes
  • IR-11476
  • Interfacial polymerization
  • Nitrate removal
  • Liquid membrane stability

Cite this

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title = "Hollow-fiber-supported liquid membranes with improved stability for nitrate removal",
abstract = "This paper describes the development of a hollow-fiber-supported liquid membrane (HFSLM) for the removal of nitrate ions from water. Two different membrane modules were designed which differed in length of the fibers. In order to test the HFSLMs on nitrate flux and stability, two set-ups were used: one in which feed and strip were recirculated, and one for the continuous removal of nitrate. Furthermore, part of the experiments were carried out using fibers with a toplayer of piperazine and trimesoyl chloride at the lumen side to increase the stability of the HFSLM. Nitrate fluxes of the HFSLMs were only slightly lower than those of flat-sheet SLMS despite the much larger thickness of the fiber wall. In both set-ups, the nitrate flux decreased in time. By applying a toplayer on the lumen side of the fibers, the lifetime of the liquid membrane was raised. SEM observations showed the toplayer, although defect-free, to be nonuniform in morphology, which resulted in difficulties in the reproducibility of the results.",
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author = "Kemperman, {Antonius J.B.} and Rolevink, {Hendrikus H.M.} and {van den Boomgaard}, Anthonie and H. Strathmann",
year = "1997",
doi = "10.1016/S1383-5866(97)00043-9",
language = "Undefined",
volume = "1997",
pages = "119--135",
journal = "Separation and purification technology",
issn = "1383-5866",
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Hollow-fiber-supported liquid membranes with improved stability for nitrate removal. / Kemperman, Antonius J.B.; Rolevink, Hendrikus H.M.; van den Boomgaard, Anthonie; Strathmann, H.

In: Separation and purification technology, Vol. 1997, No. 12-2, 1997, p. 119-135.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Hollow-fiber-supported liquid membranes with improved stability for nitrate removal

AU - Kemperman, Antonius J.B.

AU - Rolevink, Hendrikus H.M.

AU - van den Boomgaard, Anthonie

AU - Strathmann, H.

PY - 1997

Y1 - 1997

N2 - This paper describes the development of a hollow-fiber-supported liquid membrane (HFSLM) for the removal of nitrate ions from water. Two different membrane modules were designed which differed in length of the fibers. In order to test the HFSLMs on nitrate flux and stability, two set-ups were used: one in which feed and strip were recirculated, and one for the continuous removal of nitrate. Furthermore, part of the experiments were carried out using fibers with a toplayer of piperazine and trimesoyl chloride at the lumen side to increase the stability of the HFSLM. Nitrate fluxes of the HFSLMs were only slightly lower than those of flat-sheet SLMS despite the much larger thickness of the fiber wall. In both set-ups, the nitrate flux decreased in time. By applying a toplayer on the lumen side of the fibers, the lifetime of the liquid membrane was raised. SEM observations showed the toplayer, although defect-free, to be nonuniform in morphology, which resulted in difficulties in the reproducibility of the results.

AB - This paper describes the development of a hollow-fiber-supported liquid membrane (HFSLM) for the removal of nitrate ions from water. Two different membrane modules were designed which differed in length of the fibers. In order to test the HFSLMs on nitrate flux and stability, two set-ups were used: one in which feed and strip were recirculated, and one for the continuous removal of nitrate. Furthermore, part of the experiments were carried out using fibers with a toplayer of piperazine and trimesoyl chloride at the lumen side to increase the stability of the HFSLM. Nitrate fluxes of the HFSLMs were only slightly lower than those of flat-sheet SLMS despite the much larger thickness of the fiber wall. In both set-ups, the nitrate flux decreased in time. By applying a toplayer on the lumen side of the fibers, the lifetime of the liquid membrane was raised. SEM observations showed the toplayer, although defect-free, to be nonuniform in morphology, which resulted in difficulties in the reproducibility of the results.

KW - METIS-106182

KW - Hollow fibers

KW - Liquid membranes

KW - IR-11476

KW - Interfacial polymerization

KW - Nitrate removal

KW - Liquid membrane stability

U2 - 10.1016/S1383-5866(97)00043-9

DO - 10.1016/S1383-5866(97)00043-9

M3 - Article

VL - 1997

SP - 119

EP - 135

JO - Separation and purification technology

JF - Separation and purification technology

SN - 1383-5866

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ER -