Article (Scientific journals)
Optimization of the Photo-Fenton process for the effective removal of chemical oxygen demand and phenols in portable toilet wastewater: A treatment study under real world conditions.
San Juan-Garisado, Yorgi; Luna-Guevara, Francisco; Herrera, Pablo Alberto et al.
2024 • In Heliyon, 10 (15), p. 35286
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Keywords :
Biodegradability; Emerging pollutants; Phenols; Photo-fenton; Portable toilet; UV radiation; Wastewater; Multidisciplinary
Abstract :
[en] Wastewater from portable toilets (WWPT) is characterized by a high content of organic matter and a variety of chemical compounds that retain bad odors, especially phenols, a type of pollutant that is difficult to degrade by conventional treatments; in addition, it is persistent, toxic, and accumulates in the aquatic environment. Although different successful experiences with the use of Photo-Fenton are reported in the scientific domain, its application in WWPT is scarce and warrants study due to the wide use of portable toilets. The objective of this study was to evaluate the Photo-Fenton oxidation process in the removal of organic matter expressed as COD in a WWPT, as well as the reduction of phenols and BOD5. The experimental runs were carried out in a 0.50 L batch reactor to evaluate the effect of the factors (H2O2: 0.019, 25.56, 40.67, 87.24, 148.91, 174.45 g L-1 and pH: 2.80, 3.00, 3.27, 4.40, 5.53, 6.00 UNT) on COD removal and sludge production. It was found that the optimum operating conditions of pH 4.72 and H2O2 dosage of 174.45 g L-1 reduced the concentration of phenols by 97.83 % and 95.49 % of COD. In addition, 98.01 % of BOD5 was reduced, resulting in a biodegradability ratio (BOD5/COD) of 0.23 compared to the untreated wastewater of 0.53. From a cost perspective, the use of Photo-Fenton to treat wastewater under these conditions would be US$ 1.15 per liter.
Disciplines :
Civil engineering
Author, co-author :
San Juan-Garisado, Yorgi;  Universidad Popular Del Cesar Seccional Aguachica (UPCsA), Facultad de Ingenierías y Tecnologías, Grupo de Investigación GE&TES, Carrera 40 #1 Norte-2 a 1 Norte-58, Aguachica, Colombia
Luna-Guevara, Francisco ;  Universidad de Santander, Facultad de Ingenierías, Grupo Ambiental de Investigación - GAIA, Calle 70 # 55-210, Bucaramanga, Colombia
Herrera, Pablo Alberto;  Universidad Popular Del Cesar Seccional Aguachica (UPCsA), Facultad de Ingenierías y Tecnologías, Grupo de Investigación GE&TES, Carrera 40 #1 Norte-2 a 1 Norte-58, Aguachica, Colombia
Soto-Paz, Jonathan;  Universidad de Investigación y Desarrollo, Faculty of Engineering, Research Group Threats, Vulnerability and Risks to Natural Phenomena, Calle 9 # 23-55, Bucaramanga, Colombia
Alvarez-Trujillo, Jesus David;  Universidad de Investigación y Desarrollo, Faculty of Engineering, Research Group Threats, Vulnerability and Risks to Natural Phenomena, Calle 9 # 23-55, Bucaramanga, Colombia ; Universidad Industrial de Santander, Facultad de Ingenierías Fisicomecánicas, Grupo de Investigación en Recursos Hídricos y Saneamiento Ambiental - GPH, Carrera 27 Calle 9 Ciudad Universitaria, Bucaramanga, Colombia
Mejía Parada, Cristian Andres  ;  Université de Liège - ULiège > Urban and Environmental Engineering  ; Universidad de Investigación y Desarrollo, Faculty of Engineering, Research Group Threats, Vulnerability and Risks to Natural Phenomena, Calle 9 # 23-55, Bucaramanga, Colombia
Parra-Orobio, Brayan Alexis;  Universidad Popular Del Cesar Seccional Aguachica (UPCsA), Facultad de Ingenierías y Tecnologías, Grupo de Investigación GE&TES, Carrera 40 #1 Norte-2 a 1 Norte-58, Aguachica, Colombia
Language :
English
Title :
Optimization of the Photo-Fenton process for the effective removal of chemical oxygen demand and phenols in portable toilet wastewater: A treatment study under real world conditions.
Publication date :
15 August 2024
Journal title :
Heliyon
eISSN :
2405-8440
Publisher :
Elsevier Ltd, England
Volume :
10
Issue :
15
Pages :
e35286
Peer reviewed :
Peer Reviewed verified by ORBi
Funding text :
The authors thank the Universidad Popular del Cesar seccional Aguachica for funding the research group \u201CValorizaci\u00F3n y Aprovechamiento de Biomasa Residual por Bioprocesos Ambientales\u201D. Also to the Universidad de Investigaci\u00F3n y Desarrollo for the time given to Dr. Jonathan Soto Paz. In addition, the authors would like to thank the Company of Portable Toilets of the Municipality of Aguachica for providing wastewater for the experiments developed in this research.
Available on ORBi :
since 22 August 2026

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