Facile fabrication of high performance nanofiltration membranes for recovery of triazine-based chemicals used for H2S scavenging

Alaa Khalil; Nikolaos Montesantos; Marco Maschietti; Jens Muff

doi:10.1016/j.jece.2022.108735

Facile fabrication of high performance nanofiltration membranes for recovery of triazine-based chemicals used for H₂S scavenging

Alaa Khalil^*, Nikolaos Montesantos, Marco Maschietti, Jens Muff

^*Corresponding author for this work

Research output: Contribution to journal › Journal article › Research › peer-review

5 Citations (Scopus)

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Abstract

The synthesis of tailormade thin-film composite (TFC) nanofiltration (NF) membranes produced by interfacial polymerization is presented for the separation of unspent (MEA-triazine) and spent (DTZ) H2S scavengers obtained from an oil and gas wastewater from an offshore installation in the North Sea. The physicochemical properties, thermal stability, and hydrophilicity of the synthesized TFC membranes were investigated using SEM, FTIR, XRD, TGA, and contact angle. Filtration layer thicknesses from 25 to 400 μm were investigated and the optimal value (100 μm) was determined, based on the efficiency in the separation and the water permeability. Operating at 50% permeate recovery, rejections for MEA-triazine and monoethanolamine of 62% and 82%, respectively, were obtained, with zero rejection for DTZ. In 24 h batch recirculation tests, the water permeability remained stable at 6 L/(m2·h·bar), indicating insignificant fouling with 13 times higher compared to the 0.45 L/(m2·h·bar) achieved by the commercial NF270 membrane under comparable conditions. The results indicate that the NF of mixtures of spent/unspent H2S scavengers using tailored membranes is a promising strategy for recovering MEA-triazine, thus reducing costs for offshore oil and gas operators, while reducing the environmental impact associated to the discharge of this wastewater.

Original language	English
Article number	108735
Journal	Journal of Environmental Chemical Engineering
Volume	10
Issue number	6
ISSN	2213-3437
DOIs	https://doi.org/10.1016/j.jece.2022.108735
Publication status	Published - Dec 2022

Bibliographical note

Funding Information:
The work was financially supported by Danish Offshore Technology Centre as part of the work programme Produced Water Management. The authors would like to thank Jørgen Rentler Næumann (DTU Offshore, programme manager of the work programme Produced Water Management), Simon Ivar Andersen (DTU Offshore, research leader in Offshore Produced Water Management), Yanina D. Ivanova (DTU Offshore, production chemistry advisor), Ole Andersen (DTU Offshore, surface engineer advisor) for the continuous and insightful technical discussions during the execution of this work. The authors would like to thank also DTU offshore and Berit Wenzell for access and assistance in SEM images measurement.

Publisher Copyright:
© 2022 The Authors.

Keywords

Nanofiltration
Spent and unspent scavengers
Thin-film composite
Triazine-based HS scavenger

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Open Access articleFinal published version, 3.77 MBLicence: CC BY 4.0

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Cite this

@article{98b3bca7a93047b19c4213d37c455e70,

title = "Facile fabrication of high performance nanofiltration membranes for recovery of triazine-based chemicals used for H2S scavenging",

abstract = "The synthesis of tailormade thin-film composite (TFC) nanofiltration (NF) membranes produced by interfacial polymerization is presented for the separation of unspent (MEA-triazine) and spent (DTZ) H2S scavengers obtained from an oil and gas wastewater from an offshore installation in the North Sea. The physicochemical properties, thermal stability, and hydrophilicity of the synthesized TFC membranes were investigated using SEM, FTIR, XRD, TGA, and contact angle. Filtration layer thicknesses from 25 to 400 μm were investigated and the optimal value (100 μm) was determined, based on the efficiency in the separation and the water permeability. Operating at 50% permeate recovery, rejections for MEA-triazine and monoethanolamine of 62% and 82%, respectively, were obtained, with zero rejection for DTZ. In 24 h batch recirculation tests, the water permeability remained stable at 6 L/(m2·h·bar), indicating insignificant fouling with 13 times higher compared to the 0.45 L/(m2·h·bar) achieved by the commercial NF270 membrane under comparable conditions. The results indicate that the NF of mixtures of spent/unspent H2S scavengers using tailored membranes is a promising strategy for recovering MEA-triazine, thus reducing costs for offshore oil and gas operators, while reducing the environmental impact associated to the discharge of this wastewater.",

keywords = "Nanofiltration, Spent and unspent scavengers, Thin-film composite, Triazine-based HS scavenger",

author = "Alaa Khalil and Nikolaos Montesantos and Marco Maschietti and Jens Muff",

note = "Funding Information: The work was financially supported by Danish Offshore Technology Centre as part of the work programme Produced Water Management. The authors would like to thank J{\o}rgen Rentler N{\ae}umann (DTU Offshore, programme manager of the work programme Produced Water Management), Simon Ivar Andersen (DTU Offshore, research leader in Offshore Produced Water Management), Yanina D. Ivanova (DTU Offshore, production chemistry advisor), Ole Andersen (DTU Offshore, surface engineer advisor) for the continuous and insightful technical discussions during the execution of this work. The authors would like to thank also DTU offshore and Berit Wenzell for access and assistance in SEM images measurement. Publisher Copyright: {\textcopyright} 2022 The Authors.",

year = "2022",

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doi = "10.1016/j.jece.2022.108735",

language = "English",

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AU - Khalil, Alaa

AU - Montesantos, Nikolaos

AU - Maschietti, Marco

AU - Muff, Jens

N1 - Funding Information: The work was financially supported by Danish Offshore Technology Centre as part of the work programme Produced Water Management. The authors would like to thank Jørgen Rentler Næumann (DTU Offshore, programme manager of the work programme Produced Water Management), Simon Ivar Andersen (DTU Offshore, research leader in Offshore Produced Water Management), Yanina D. Ivanova (DTU Offshore, production chemistry advisor), Ole Andersen (DTU Offshore, surface engineer advisor) for the continuous and insightful technical discussions during the execution of this work. The authors would like to thank also DTU offshore and Berit Wenzell for access and assistance in SEM images measurement. Publisher Copyright: © 2022 The Authors.

PY - 2022/12

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N2 - The synthesis of tailormade thin-film composite (TFC) nanofiltration (NF) membranes produced by interfacial polymerization is presented for the separation of unspent (MEA-triazine) and spent (DTZ) H2S scavengers obtained from an oil and gas wastewater from an offshore installation in the North Sea. The physicochemical properties, thermal stability, and hydrophilicity of the synthesized TFC membranes were investigated using SEM, FTIR, XRD, TGA, and contact angle. Filtration layer thicknesses from 25 to 400 μm were investigated and the optimal value (100 μm) was determined, based on the efficiency in the separation and the water permeability. Operating at 50% permeate recovery, rejections for MEA-triazine and monoethanolamine of 62% and 82%, respectively, were obtained, with zero rejection for DTZ. In 24 h batch recirculation tests, the water permeability remained stable at 6 L/(m2·h·bar), indicating insignificant fouling with 13 times higher compared to the 0.45 L/(m2·h·bar) achieved by the commercial NF270 membrane under comparable conditions. The results indicate that the NF of mixtures of spent/unspent H2S scavengers using tailored membranes is a promising strategy for recovering MEA-triazine, thus reducing costs for offshore oil and gas operators, while reducing the environmental impact associated to the discharge of this wastewater.

AB - The synthesis of tailormade thin-film composite (TFC) nanofiltration (NF) membranes produced by interfacial polymerization is presented for the separation of unspent (MEA-triazine) and spent (DTZ) H2S scavengers obtained from an oil and gas wastewater from an offshore installation in the North Sea. The physicochemical properties, thermal stability, and hydrophilicity of the synthesized TFC membranes were investigated using SEM, FTIR, XRD, TGA, and contact angle. Filtration layer thicknesses from 25 to 400 μm were investigated and the optimal value (100 μm) was determined, based on the efficiency in the separation and the water permeability. Operating at 50% permeate recovery, rejections for MEA-triazine and monoethanolamine of 62% and 82%, respectively, were obtained, with zero rejection for DTZ. In 24 h batch recirculation tests, the water permeability remained stable at 6 L/(m2·h·bar), indicating insignificant fouling with 13 times higher compared to the 0.45 L/(m2·h·bar) achieved by the commercial NF270 membrane under comparable conditions. The results indicate that the NF of mixtures of spent/unspent H2S scavengers using tailored membranes is a promising strategy for recovering MEA-triazine, thus reducing costs for offshore oil and gas operators, while reducing the environmental impact associated to the discharge of this wastewater.

KW - Nanofiltration

KW - Spent and unspent scavengers

KW - Thin-film composite

KW - Triazine-based HS scavenger

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U2 - 10.1016/j.jece.2022.108735

DO - 10.1016/j.jece.2022.108735

M3 - Journal article

AN - SCOPUS:85140436461

SN - 2213-3437

VL - 10

JO - Journal of Environmental Chemical Engineering

JF - Journal of Environmental Chemical Engineering

IS - 6

M1 - 108735

ER -

Facile fabrication of high performance nanofiltration membranes for recovery of triazine-based chemicals used for H₂S scavenging

Abstract

Bibliographical note

Keywords

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Zero Discharge of H2S Scavenging Chemicals

Cite this

Facile fabrication of high performance nanofiltration membranes for recovery of triazine-based chemicals used for H2S scavenging

Abstract

Bibliographical note

Keywords

Access to Document

AUB Link

Other files and links

Fingerprint

Projects

Zero Discharge of H2S Scavenging Chemicals

Cite this

Facile fabrication of high performance nanofiltration membranes for recovery of triazine-based chemicals used for H₂S scavenging