CoChat
Sign Up
Cited by 198

The DOI matches its Crossref record; 13 of the 13 references it cites were found in a registry or an index.

Near-Quantitative Defluorination of Perfluorinated and Fluorotelomer Carboxylates and Sulfonates with Integrated Oxidation and Reduction

Liu, Zekun, Bentel, Michael J., Yu, Yaochun, Ren, Changxu, Gao, Jinyu, Pulikkal, Vivek Francis, Sun, Mei, Men, Yujie, Liu, Jinyong·2021·Environmental Science & Technology
DOI 10.1021/acs.est.1c00353
Open this paper in CoChat — free account

Abstract

The UV-sulfite reductive treatment using hydrated electrons ( e aq - ) is a promising technology for destroying perfluorocarboxylates (PFCAs, C n F 2n+1 COO - ) in any chain length. However, the C-H bonds formed in the transformation products strengthen the residual C-F bonds and thus prevent complete defluorination. Reductive treatments of fluorotelomer carboxylates (FTCAs, C n F 2n+1 -CH 2 CH 2 -COO - ) and sulfonates (FTSAs, C n F 2n+1 -CH 2 CH 2 -SO 3 - ) are also sluggish because the ethylene linker separates the fluoroalkyl chain from the end functional group. In this work, we used oxidation ( Ox ) with hydroxyl radicals (HO•) to convert FTCAs and FTSAs to a mixture of PFCAs. This process also cleaved 35-95% of C-F bonds depending on the fluoroalkyl chain length. We probed the stoichiometry and mechanism for the oxidative defluorination of fluorotelomers. The subsequent reduction ( Red ) with UV-sulfite achieved deep defluorination of the PFCA mixture for up to 90%. The following use of HO• to oxidize the H-rich residues led to the cleavage of the remaining C-F bonds. We examined the efficacy of integrated oxidative and reductive treatment of n = 1-8 PFCAs, n = 4,6,8 perfluorosulfonates (PFSAs, C n F 2n+1 -SO 3 - ), n = 1-8 FTCAs, and n = 4,6,8 FTSAs. A majority of structures yielded near-quantitative overall defluorination (97-103%), except for n = 7,8 fluorotelomers (85-89%), n = 4 PFSA (94%), and n = 4 FTSA (93%). The results show the feasibility of complete defluori…

Overview

Integrity signals

Registry

Crossref · 10.1021/acs.est.1c00353

Cites

13 of 13 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Verification

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Citations

Cites

Research works printed but not linked: 50

  1. 10.1016/j.chemosphere.2018.12.186 · DOI · Paper page
  2. 10.1021/acs.est.0c00934 · DOI
  3. 10.1016/j.watres.2013.10.067 · DOI · Paper page
  4. 10.1016/j.watres.2017.04.057 · DOI · Paper page
  5. 10.1021/es703207s · DOI
  6. 10.1016/j.chemosphere.2015.11.097 · DOI
  7. 10.1021/acs.est.0c02158 · DOI
  8. 10.1016/j.cej.2019.123031 · DOI
  9. 10.1021/acs.est.0c06212 · DOI
  10. 10.1007/s11783-020-1264-7 · DOI
  11. 10.1016/j.jhazmat.2015.04.024 · DOI
  12. 10.1021/acsestengg.0c00086 · DOI
  13. 10.1021/es040342v · DOI
  14. 10.1021/jp903003w · DOI
  15. 10.1016/j.cplett.2007.01.037 · DOI
  16. 10.1021/jp807116q · DOI · Paper page
  17. 10.1016/j.jhazmat.2013.08.059 · DOI
  18. 10.1038/srep32949 · DOI
  19. 10.1021/acs.est.8b02172 · DOI
  20. 10.1021/acs.est.7b05912 · DOI
  21. 10.1021/acs.est.9b06599 · DOI
  22. 10.1021/acs.est.8b06648 · DOI
  23. 10.1021/acs.estlett.0c00236 · DOI
  24. 10.1021/acs.est.6b04021 · DOI · Paper page
  25. 10.1021/acs.est.9b00690 · DOI
  26. 10.1021/acs.est.9b07113 · DOI
  27. 10.1063/1.555808 · DOI · Paper page
  28. 10.1021/ja01151a024 · DOI · Paper page
  29. 10.1021/ja01851a041 · DOI
  30. 10.4319/lo.1961.6.3.0259 · DOI
  31. 10.4319/lo.1964.9.1.0138 · DOI
  32. 10.1080/00207238608710296 · DOI
  33. 10.4319/lo.1965.10.2.0280 · DOI
  34. 10.1016/j.envpol.2008.07.031 · DOI
  35. 10.1007/s11783-020-1227-z · DOI
  36. 10.1021/es0484754 · DOI
  37. 10.1016/j.seppur.2011.09.047 · DOI
  38. 10.1007/s11783-009-0022-7 · DOI
  39. 10.1515/znb-1985-0212 · DOI
  40. 10.1002/kin.20239 · DOI
  41. 10.1029/2002JD002202 · DOI
  42. 10.1021/acs.est.9b05869 · DOI
  43. 10.1021/jp952769h · DOI
  44. 10.1021/es4034414 · DOI
  45. 10.1016/j.watres.2017.10.067 · DOI
  46. 10.1016/j.jhazmat.2020.124875 · DOI
  47. 10.1021/acs.est.6b03261 · DOI
  48. 10.1021/es9710417 · DOI
  49. 10.1021/es00159a010 · DOI
  50. 10.1021/es010552x · DOI

Cited by

Sorted by citations

See all 198

Metadata

Authors
Liu, Z., Bentel, M. J., Yu, Y., Ren, C., Gao, J., Pulikkal, V. F., Sun, M., Men, Y., & Liu, J.
Affiliations
  • Department of Chemical & Environmental Engineering, University of California, Riverside, California 92521, United States
  • Department of Civil & Environmental Engineering, University of North Carolina at Charlotte, Charlotte, North Carolina 28223, United States
ORCID
Venue
Environmental Science & Technology
Publisher
American Chemical Society (ACS)
Published
2021-05-05
Volume
55
Issue
10
Pages
7052-7062
ISSN
  • 0013-936X
  • 1520-5851
DOI
10.1021/acs.est.1c00353
Cited by
198
References
13
Language
en
Licence
creativecommons.org/licenses/by-nc-nd/4.0/ (unspecified)
Funders
  • Division of Chemistry (CHE-1709286)
  • U.S. Department of Defense (ER18-1289, ER18-1497)

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review