Umeå universitets logga

umu.sePublikationer
Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Assessment of the environmental impact of polymeric membrane production
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Kemiska institutionen.
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Kemiska institutionen.
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Kemiska institutionen.
Visa övriga samt affilieringar
2021 (Engelska)Ingår i: Journal of Membrane Science, ISSN 0376-7388, E-ISSN 1873-3123, Vol. 622, artikel-id 118987Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Polymeric membranes are important in advanced separation technologies because of their high efficiency and low environmental impact. However, procedures for membrane production are far from sustainable and environmentally friendly. This work presents a life cycle assessment of the environmental impact of fabricating 1000 m2 of hollow fiber polymeric membranes. Membrane materials considered include the most popular fossil- and bio-based polymers in current use, i.e., polysulfones, polyvinylidene fluoride, and cellulose acetate. Solvents considered for use in polymer dope solution included polar aprotic solvents (N-Methyl-2-pyrrolidone, N, N-dimethylacetamide, and dimethylformamide) that are widely used in industry and an alternative green solvent (ethylene carbonate). The impacts of membrane production on global warming, marine ecotoxicity, human carcinogenic and non-carcinogenic toxicity, land use potential, and fossil resource scarcity were analyzed. Additionally, the impact on the sustainability and environmental cost of membrane production resulting from replacing fossil-based polymers with bio-based polymers or substituting toxic solvents with a green alternative was investigated. Hot spots in the membrane production process were identified, and measures to reduce the environmental impact of membrane production were proposed.

Ort, förlag, år, upplaga, sidor
Elsevier, 2021. Vol. 622, artikel-id 118987
Nyckelord [en]
Polymeric membranes, Hollow fiber Membrane, Life cycle assessment, Environmental impact, Environmental cost, Sustainability
Nationell ämneskategori
Kemi
Identifikatorer
URN: urn:nbn:se:umu:diva-178332DOI: 10.1016/j.memsci.2020.118987ISI: 000618205600004Scopus ID: 2-s2.0-85099206530OAI: oai:DiVA.org:umu-178332DiVA, id: diva2:1515678
Forskningsfinansiär
Bio4EnergyKempestiftelsernaTillgänglig från: 2021-01-11 Skapad: 2021-01-11 Senast uppdaterad: 2023-12-12Bibliografiskt granskad
Ingår i avhandling
1. Sustainable membrane fabrication using greener solvents
Öppna denna publikation i ny flik eller fönster >>Sustainable membrane fabrication using greener solvents
2023 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Abstract [en]

Technologies based on polymeric membranes have diverse applications in purification, desalination, and decontamination processes. However, current membrane production techniques are neither sustainable nor environmentally benign. A Life-Cycle Assessment (LCA) was conducted to determine how the choice of membrane polymer (fossil-based or bio-based), the solvent (toxic or green), and the energy source used in membrane fabrication affect their environmental impacts. The results showed that solvent toxicity is the main obstacle to sustainable membrane production. The harmful environmental effects of current membrane production processes are largely due to the use of toxic solvents, particularly polar aprotic solvents such as N-methyl pyrrolidone (NMP), dimethylformamide (DMF), and dimethylacetamide (DMAc). It was also found that replacing these solvents with the green solvent, ethylene carbonate (EC), would reduce the environmental impact of membrane production by up to 35%. Developing sustainable membrane fabrication techniques using green solvents could thus be highly beneficial.

In this thesis, three different pathways were proposed to address sustainability issues in membrane production identified in the LCA study. First, it prompted an investigation into the viability of utilizing three environmentally friendly cyclic carbonate solvents: EC; propylene carbonate (PC); and butylene carbonate (BC) for the production of polyvinylidene fluoride (PVDF) membranes. These solvents are biobased, biodegradable, inexpensive, and readily available on large scales. The study aimed to examine the influence of solvent structure on membrane morphology, polymorphism, and separation performance. It provided valuable insights into the mechanisms governing the formation of pure β-phase PVDF membranes.

Non-ionic deep eutectic solvents (NIDES) are a sub-class of ionic liquids that can be synthesized inexpensively using simple heating processes with no pre- or post-treatment. As such, they could be attractive alternative solvents for membrane fabrication. Three NIDES were synthesized and used to dissolve PVDF: N-methylacetamide-acetamide (DES-1); N-methyl acetamide-N-methyl urea (DES-2); and N-methyl acetamide-N,N’-dimethyl urea (DES-3). The favorable performance of the obtained membranes together with the low cost, low toxicity, and simple large-scale synthesis of NIDES makes this an attractive approach for membrane production. 

Finally, three Dibasic Esters (DBEs) namely dimethyl succinate (DMS), dimethyl glutarate (DMG) and dimethyl adipate (DMA) were introduced as alternative green solvents for PVDF membrane production. DBEs have several desirable properties including biodegradability, non-carcinogenicity, non-corrosiveness, and non-hazardousness. Furthermore, these DBEs are not only more economical compared to hazardous solvents but are also easily accessible in significant quantities, thus increasing their suitability for large-scale industrial membrane manufacturing. Hence, we conducted an assessment of the morphology, properties, and performance of DBEs as a potential solvent alternative for membrane production. 

To conclude, this thesis provides an improved and advanced understanding of sustainable approaches in polymeric membrane production. By investigating different aspects such as solvent choices and introducing alternative solvents, the research contributes valuable insights to the field and promotes the development of more environmentally friendly and sustainable environment membrane manufacturing processes.

 

Ort, förlag, år, upplaga, sidor
Umeå, Sweden: Umeå University, 2023. s. 48
Nationell ämneskategori
Kemiteknik
Identifikatorer
urn:nbn:se:umu:diva-212699 (URN)978-91-8070-134-1 (ISBN)978-91-8070-135-8 (ISBN)
Disputation
2023-09-01, Lilla Hörsalen, KBC, Umeå, 09:00 (Engelska)
Opponent
Handledare
Tillgänglig från: 2023-08-15 Skapad: 2023-08-08 Senast uppdaterad: 2023-12-12Bibliografiskt granskad

Open Access i DiVA

fulltext(3745 kB)1856 nedladdningar
Filinformation
Filnamn FULLTEXT01.pdfFilstorlek 3745 kBChecksumma SHA-512
904302e4b2b42fec86313554eb71d172cdc8f624294c9318176afcf2d65ce8490518c4a2dacfbc93a115eeae3754b8c1e649dd4d9e438f37a7bc7a5ff8747fd5
Typ fulltextMimetyp application/pdf

Övriga länkar

Förlagets fulltextScopus

Person

Ismail, NorafiqahEssalhi, MohamedTysklind, MatsTavajohi Hassan Kiadeh, Naser

Sök vidare i DiVA

Av författaren/redaktören
Ismail, NorafiqahEssalhi, MohamedTysklind, MatsTavajohi Hassan Kiadeh, Naser
Av organisationen
Kemiska institutionen
I samma tidskrift
Journal of Membrane Science
Kemi

Sök vidare utanför DiVA

GoogleGoogle Scholar
Totalt: 1863 nedladdningar
Antalet nedladdningar är summan av nedladdningar för alla fulltexter. Det kan inkludera t.ex tidigare versioner som nu inte längre är tillgängliga.

doi
urn-nbn

Altmetricpoäng

doi
urn-nbn
Totalt: 457 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf