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Degradation and Mineralization of Carbamazepine Using an Electro-Fenton Reaction Catalyzed by Magnetite Nanoparticles Fixed on an Electrocatalytic Carbon Fiber Textile Cathode

Liu, Kai and Yu, Joseph Che-Chin and Dong, Heng and Wu, Jeffrey C. S. and Hoffmann, Michael R. (2018) Degradation and Mineralization of Carbamazepine Using an Electro-Fenton Reaction Catalyzed by Magnetite Nanoparticles Fixed on an Electrocatalytic Carbon Fiber Textile Cathode. Environmental Science and Technology, 52 (21). pp. 12667-12674. ISSN 0013-936X. PMCID PMC6222555. https://resolver.caltech.edu/CaltechAUTHORS:20181017-105737071

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Abstract

Pharmaceutical wastes are considered to be important pollutants even at low concentrations. In this regard, carbamazepine has received significant attention due to its negative effect on both ecosystem and human health. However, the need for acidic conditions severely hinders the use of conventional Fenton reagent reactions for the control and elimination of carbamazepine in wastewater effluents and drinking water influents. Herein, we report of the synthesis and use of flexible bifunctional nanoelectrocatalytic textile materials, Fe_3O_4-NP@CNF, for the effective degradation and complete mineralization of carbamazepine in water. The nonwoven porous structure of the composite binder-free Fe_3O_4-NP@CNF textile is used to generate H_2O_2 on the carbon nanofiber (CNF) substrate by O_2 reduction. In addition, ·OH radical is generated on the surface of the bonded Fe_3O_4 nanoparticles (NPs) at low applied potentials (−0.345 V). The Fe_3O_4-NPs are covalently bonded to the CNF textile support with a high degree of dispersion throughout the fiber matrix. The dispersion of the nanosized catalysts results in a higher catalytic reactivity than existing electro-Fenton systems. For example, the newly synthesized Fe_3O_4-NPs system uses an Fe loading that is 2 orders of magnitude less than existing electro-Fenton systems, coupled with a current efficiency that is higher than electrolysis using a boron-doped diamond electrode. Our test results show that this process can remove carbamazepine with high pseudo-first-order rate constants (e.g., 6.85 h^(–1)) and minimal energy consumption (0.239 kW·h/g carbamazepine). This combination leads to an efficient and sustainable electro-Fenton process.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1021/acs.est.8b03916DOIArticle
https://pubs.acs.org/doi/suppl/10.1021/acs.est.8b03916PublisherSupporting Information
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6222555/PubMed CentralArticle
ORCID:
AuthorORCID
Liu, Kai0000-0002-2109-8196
Wu, Jeffrey C. S.0000-0002-2231-3118
Hoffmann, Michael R.0000-0001-6495-1946
Additional Information:© 2018 American Chemical Society. This is an open access article published under a Creative Commons Attribution (CC-BY) License, which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited. Received: July 16, 2018; Revised: October 15, 2018; Accepted: October 16, 2018; Published: October 16, 2018. This study was supported by the Bill and Melinda Gates Foundation (Grant OPP1149755), Caltech Rosenburg Innovation Initiative, and Grant 106-2917-I-002-008 from Taiwan Ministry of Science and Technology. Author Contributions: K.L. and C.Y. contributed equally to the work. K.L. conceived the idea and designed the experiment, and K.L. and C.Y. performed the experiment. K. Liu wrote the manuscript. The authors declare no competing financial interest.
Funders:
Funding AgencyGrant Number
Bill and Melinda Gates FoundationOPP1149755
Caltech Innovation Initiative (CI2)UNSPECIFIED
Ministry of Science and Technology (Taipei)106-2917-I-002-008
Issue or Number:21
PubMed Central ID:PMC6222555
Record Number:CaltechAUTHORS:20181017-105737071
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20181017-105737071
Official Citation:Degradation and Mineralization of Carbamazepine Using an Electro-Fenton Reaction Catalyzed by Magnetite Nanoparticles Fixed on an Electrocatalytic Carbon Fiber Textile Cathode. Kai Liu, Joseph Che-Chin Yu, Heng Dong, Jeffrey C. S. Wu, and Michael R. Hoffmann. Environmental Science & Technology 2018 52 (21), 12667-12674 DOI: 10.1021/acs.est.8b03916
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:90306
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:18 Oct 2018 16:45
Last Modified:11 Apr 2020 00:13

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