Tags

Type your tag names separated by a space and hit enter

Electrochemical removal of carbamazepine in water with Ti/PbO2 cylindrical mesh anode.
Water Sci Technol. 2016; 73(5):1155-65.WS

Abstract

Carbamazepine (CBZ) is one of the most frequently detected organic compounds in the aquatic environment. Due to its bio-persistence and toxicity for humans and the environment its removal has become an important issue. The performance of the electrochemical oxidation process and in situ production of reactive oxygen species (ROS), such as O3 and H2O2, for CBZ removal have been studied using Ti/PbO2 cylindrical mesh anode in the presence of Na2SO4 as supporting electrolyte in a batch electrochemical reactor. In this integrated process, direct oxidation at anode and indirect oxidation by in situ electrogenerated ROS can occur simultaneously. The effect of several factors such as electrolysis time, current intensity, initial pH and oxygen flux was investigated by means of an experimental design methodology, using a 2(4) factorial matrix. CBZ removal of 83.93% was obtained and the most influential parameters turned out to be electrolysis time, current intensity and oxygen flux. Later, the optimal experimental values for CBZ degradation were obtained by means of a central composite design. The best operating conditions, analyzed by Design Expert(®) software, are the following: 110 min of electrolysis at 3.0 A, pH = 7.05 and 2.8 L O2/min. Under these optimal conditions, the model prediction (82.44%) fits very well with the experimental response (83.90 ± 0.8%). Furthermore, chemical oxygen demand decrease was quantified. Our results illustrated significant removal efficiency for the CBZ in optimized condition with second order kinetic reaction.

Authors+Show Affiliations

Facultad de Ingeniería, Universidad Nacional Autónoma de México (UNAM), Paseo Cuauhnáhuac 8532, Col. Progreso, Jiutepec, Morelos 62550, Mexico E-mail: iqgarciaespinoza@gmail.com.Departamento de Biotecnología y Ciencias Alimentarias, Instituto Tecnológico de Sonora (ITSON), 5 de Febrero 818 Sur C.P., Cuidad Obregón, Sonora 85000, Mexico.Instituto de Ingeniería, UNAM. Ciudad Universitaria, Coyoacán, D.F. 04510, Mexico.Institut national de la recherche scientifique (INRS-Eau Terre et Environnement), 8 Université du Québec, 490 rue de la Couronne, Québec, QC G1K 9A9 Canada.Instituto Mexicano de Tecnología del Agua (IMTA), Paseo Cuauhnáhuac 8532, Col. Progreso, Jiutepec, Morelos 62550, Mexico.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

26942539

Citation

García-Espinoza, J D., et al. "Electrochemical Removal of Carbamazepine in Water With Ti/PbO2 Cylindrical Mesh Anode." Water Science and Technology : a Journal of the International Association On Water Pollution Research, vol. 73, no. 5, 2016, pp. 1155-65.
García-Espinoza JD, Gortáres-Moroyoqui P, Orta-Ledesma MT, et al. Electrochemical removal of carbamazepine in water with Ti/PbO2 cylindrical mesh anode. Water Sci Technol. 2016;73(5):1155-65.
García-Espinoza, J. D., Gortáres-Moroyoqui, P., Orta-Ledesma, M. T., Drogui, P., & Mijaylova-Nacheva, P. (2016). Electrochemical removal of carbamazepine in water with Ti/PbO2 cylindrical mesh anode. Water Science and Technology : a Journal of the International Association On Water Pollution Research, 73(5), 1155-65. https://doi.org/10.2166/wst.2015.591
García-Espinoza JD, et al. Electrochemical Removal of Carbamazepine in Water With Ti/PbO2 Cylindrical Mesh Anode. Water Sci Technol. 2016;73(5):1155-65. PubMed PMID: 26942539.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Electrochemical removal of carbamazepine in water with Ti/PbO2 cylindrical mesh anode. AU - García-Espinoza,J D, AU - Gortáres-Moroyoqui,P, AU - Orta-Ledesma,M T, AU - Drogui,P, AU - Mijaylova-Nacheva,P, PY - 2016/3/5/entrez PY - 2016/3/5/pubmed PY - 2016/5/26/medline SP - 1155 EP - 65 JF - Water science and technology : a journal of the International Association on Water Pollution Research JO - Water Sci. Technol. VL - 73 IS - 5 N2 - Carbamazepine (CBZ) is one of the most frequently detected organic compounds in the aquatic environment. Due to its bio-persistence and toxicity for humans and the environment its removal has become an important issue. The performance of the electrochemical oxidation process and in situ production of reactive oxygen species (ROS), such as O3 and H2O2, for CBZ removal have been studied using Ti/PbO2 cylindrical mesh anode in the presence of Na2SO4 as supporting electrolyte in a batch electrochemical reactor. In this integrated process, direct oxidation at anode and indirect oxidation by in situ electrogenerated ROS can occur simultaneously. The effect of several factors such as electrolysis time, current intensity, initial pH and oxygen flux was investigated by means of an experimental design methodology, using a 2(4) factorial matrix. CBZ removal of 83.93% was obtained and the most influential parameters turned out to be electrolysis time, current intensity and oxygen flux. Later, the optimal experimental values for CBZ degradation were obtained by means of a central composite design. The best operating conditions, analyzed by Design Expert(®) software, are the following: 110 min of electrolysis at 3.0 A, pH = 7.05 and 2.8 L O2/min. Under these optimal conditions, the model prediction (82.44%) fits very well with the experimental response (83.90 ± 0.8%). Furthermore, chemical oxygen demand decrease was quantified. Our results illustrated significant removal efficiency for the CBZ in optimized condition with second order kinetic reaction. SN - 0273-1223 UR - https://www.unboundmedicine.com/medline/citation/26942539/Electrochemical_removal_of_carbamazepine_in_water_with_Ti/PbO2_cylindrical_mesh_anode_ L2 - https://iwaponline.com/wst/article-lookup/doi/10.2166/wst.2015.591 DB - PRIME DP - Unbound Medicine ER -