Publicación:
Scaling up photoelectrocatalytic reactors: A TiO2 nanotube-coated disc compound reactor effectively degrades acetaminophen
Scaling up photoelectrocatalytic reactors: A TiO2 nanotube-coated disc compound reactor effectively degrades acetaminophen
| dc.contributor.author | Montenegro-Ayo R. | es_PE |
| dc.contributor.author | Morales-Gomero J.C. | es_PE |
| dc.contributor.author | Alarcon H. | es_PE |
| dc.contributor.author | Cotillas S. | es_PE |
| dc.contributor.author | Westerhoff P. | es_PE |
| dc.contributor.author | Garcia-Segura S. | es_PE |
| dc.date.accessioned | 2024-05-30T23:13:38Z | |
| dc.date.available | 2024-05-30T23:13:38Z | |
| dc.date.issued | 2019 | |
| dc.description.abstract | Multiple discs coated with hierarchically-organized TiO2 anatase nanotubes served as photoelectrodes in a novel annular photoelectrocatalytic reactor. Electrochemical characterization showed light irradiation enhanced the current response due to photogeneration of charge carriers. The pharmaceutical acetaminophen was used as a representative water micropollutant. The photoelectrocatalysis pseudo-first-order rate constant for acetaminophen was seven orders of magnitude greater than electrocatalytic treatment. Compared against photocatalysis alone, our photoelectrocatalytic reactor at <8 V reduced by two fold, the electric energy per order (EEO; kWh m-3 order-1 for 90% pollutant degradation). Applying a cell potential higher than 8 V detrimentally increased EEO. Acetaminophen was degraded across a range of initial concentrations, but absorbance at higher concentration diminished photon transport, resulting in higher EEO. Extended photoelectrocatalytic reactor operation degraded acetaminophen, which was accompanied by 53% mineralization based upon total organic carbon measurements. This proof of concept for our photoelectrocatalytic reactor demonstrated a strategy to increase photo-active surface area in annular reactors. © 2020 by the authors. | |
| dc.description.sponsorship | Consejo Nacional de Ciencia, Tecnología e Innovación Tecnológica - Concytec | |
| dc.identifier.doi | https://doi.org/10.3390/w11122522 | |
| dc.identifier.scopus | 2-s2.0-85076752807 | |
| dc.identifier.uri | https://hdl.handle.net/20.500.12390/2752 | |
| dc.language.iso | eng | |
| dc.publisher | MDPI AG | |
| dc.relation.ispartof | Water (Switzerland) | |
| dc.rights | info:eu-repo/semantics/openAccess | |
| dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | |
| dc.subject | Water treatment | |
| dc.subject | Electrochemical advanced oxidation processes | es_PE |
| dc.subject | Hydroxyl radical | es_PE |
| dc.subject | Persistent organic pollutant | es_PE |
| dc.subject | Titanium dioxide nanotubes | es_PE |
| dc.subject.ocde | http://purl.org/pe-repo/ocde/ford#2.07.05 | |
| dc.title | Scaling up photoelectrocatalytic reactors: A TiO2 nanotube-coated disc compound reactor effectively degrades acetaminophen | |
| dc.type | info:eu-repo/semantics/article | |
| dspace.entity.type | Publication |