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Nanowire-Modified Three-Dimensional Electrode Enabling Low-Voltage Electroporation for Water Disinfection

Huo, Zheng-Yang and Xie, Xing and Yu, Tong and Lu, Yun and Feng, Chao and Hu, Hong-Ying (2016) Nanowire-Modified Three-Dimensional Electrode Enabling Low-Voltage Electroporation for Water Disinfection. Environmental Science and Technology, 50 (14). pp. 7641-7649. ISSN 0013-936X. https://resolver.caltech.edu/CaltechAUTHORS:20160725-140559224

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Abstract

More than 10% of the people in the world still suffer from inadequate access to clean water. Traditional water disinfection methods (e.g., chlorination and ultraviolet radiation) include concerns about the formation of carcinogenic disinfection byproducts (DBPs), pathogen reactivation, and/or excessive energy consumption. Recently, a nanowire-assisted electroporation–disinfection method was introduced as an alternative. Here, we develop a new copper oxide nanowire (CuONW)-modified three-dimensional copper foam electrode using a facile thermal oxidation approach. An electroporation–disinfection cell (EDC) equipped with two such electrodes has achieved superior disinfection performance (>7 log removal and no detectable bacteria in the effluent). The disinfection mechanism of electroporation guarantees an exceedingly low operation voltage (1 V) and level of energy consumption (25 J L^(–1)) with a short contact time (7 s). The low operation voltage avoids chlorine generation and thus reduces the potential of DBP formation. Because of irreversible electroporation damage on cell membranes, no regrowth and/or reactivation of bacteria occurs during storage after EDC treatment. Water disinfection using EDCs has great potential for practical applications.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1021/acs.est.6b01050DOIArticle
http://pubs.acs.org/doi/abs/10.1021/acs.est.6b01050PublisherArticle
http://pubs.acs.org/doi/suppl/10.1021/acs.est.6b01050PublisherSupporting Information
Additional Information:© 2016 American Chemical Society. Received: March 1, 2016; Revised: June 22, 2016; Accepted: June 24, 2016; Published: June 24, 2016. This study was supported by Key Program of the National Natural Science Foundation of China (51138006). The Collaborative Innovation Center for Regional Environmental Quality also supported this research. The authors declare no competing financial interest.
Funders:
Funding AgencyGrant Number
National Natural Science Foundation of China51138006
Collaborative Innovation Center for Regional Environmental QualityUNSPECIFIED
Issue or Number:14
Record Number:CaltechAUTHORS:20160725-140559224
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20160725-140559224
Official Citation:Nanowire-Modified Three-Dimensional Electrode Enabling Low-Voltage Electroporation for Water Disinfection Zheng-Yang Huo, Xing Xie, Tong Yu, Yun Lu, Chao Feng, and Hong-Ying Hu Environmental Science & Technology 2016 50 (14), 7641-7649 DOI: 10.1021/acs.est.6b01050
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:69204
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:25 Jul 2016 21:16
Last Modified:03 Oct 2019 10:20

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