RT Journal Article
T1 Integration of a 3D-printed electrochemical reactor with a tubular membrane photoreactor to promote sulfate-based advanced oxidation processes
A1 Olivera, Agustina R. de
A1 Montes Goyanes, Rosa
A1 Quintana Álvarez, José Benito
A1 Rodil Rodríguez, María del Rosario
A1 Vilar, Vítor J. P.
K1 Peroxomonosulfate
K1 Peroxydisulfate
K1 Electrogeneration
K1 Membrane concentrates
K1 Contaminants of emerging concern
AB This study investigates the integration of an in-house 3D printed electrochemical cell − SERPIC-UCLM® cell – for the in situ generation of peroxymonosulfuric acid (PMSA) with a lab-scale tubular membrane photoreactor (TMPr) to evaluate the effectiveness of sulfate-radical advanced oxidation processes (SR-AOPs) in eliminating contaminants of emerging concern (CECs) from reverse osmosis and nanofiltration concentrates (ROC and NFC, respectively). First, the SERPIC-UCLM® cell was evaluated in terms of mass transport features employing the limiting current technique, demonstrating favorable volumetric mass transport rates (kmA ∼ 10–3 s–1) and Sherwood values (Sh > 300) under the laminar flow regime (110 < Reynolds (Re) < 790). Afterward, the effect of the electrolyte (sulfuric acid, H2SO4) initial pH in the electrochemical generation of PMSA was studied, with an initial pH of 1 selected as optimal. PMSA is a highly reactive peroxyacid that undergoes self-decomposition at neutral pH media (e.g., ROC and NFC with a pH of 7.6 and 7.9, respectively), primarily existing in the form of peroxomonosulfate (PMS). Additionally, the phototreatment of the ROC and NFC was assessed using the electrogenerated PMS and commercial peroxydisulfate (PDS) under the same conditions. The results indicated comparable degradation patterns for CECs in both ROC and NFC. Furthermore, the application of 2.4 mM PMS resulted in removals higher than 60 % for 7 of the 11 CECs identified in the NFC, and ensured compliance with wastewater discharge regulations for pH, chemical oxygen demand (COD), and total suspended solids (TSS) levels. These findings emphasize the importance of this technology, showing its advantages in terms of versatility and logistics.
PB Elsevier
YR 2024
FD 2024-10-24
LK https://hdl.handle.net/10347/37637
UL https://hdl.handle.net/10347/37637
LA eng
NO A.R. de Oliveira et al. Integration of a 3D-printed electrochemical reactor with a tubular membrane photoreactor to promote sulfate-based advanced oxidation processes. Chemical Engineering Journal Volume 500, 2024, 156900.
NO This work was financially supported by: (i) EU and Bundesministerium für Bildung und Forschung, Germany, Ministero dell’Università e della Ricerca, Italy, Agencia Estatal de Investigación, Spain, Fundação para a Ciência e a Tecnologia (FCT), Portugal, Norges forskningsråd, Norway, Water Research Commission, South Africa for funding, in the frame of the collaborative international consortium SERPIC financed under the ERA-NET AquaticPollutants Joint Transnational Call (GA N° 869178; Reference Aquatic/0002/2020 with DOI 10.54499/Aquatic/0002/2020). This ERA-NET is an integral part of the activities developed by the Water, Oceans and AMR Joint Programming Initiatives, (ii) national funds through FCT/MCTES (PIDDAC) – LSRE-LCM, UIDB/50020/2020 (DOI: 10.54499/UIDB/50020/2020) and UIDP/50020/2020 (DOI: 10.54499/UIDP/50020/2020), ALiCE, LA/P/0045/2020 (DOI: 10.54499/LA/P/0045/2020), (iii) Spanish Agencia Estatal de Investigación – MCIN/AEI/10.13039/501100011033 (ref. PID2020-117686RB-C32), and iv) regional funds Xunta de Galicia (ED431C 2021/06). Vítor J.P. Vilar and Francisca C. Moreira acknowledge the FCT Individual Call to Scientific Employment Stimulus 2017 (CEECIND/01317/2017 and CEECIND/02196/2017, respectively). Agustina R. de Olivera and Carla S. Santos acknowledge the PhD scholarships funded by FCT (2021.07416.BD and 2022.10796.BD, respectively).
DS Minerva
RD 20 may 2026