An experimental design methodology was used to optimize the synthesis of an iron-supported nanocatalyst as well as the inactivation process of Ascaris eggs (Ae) using this material. A factor screening design was used for identifying the significant experimental factors for nanocatalyst support (supported %Fe, (w/w), temperature and time of calcination) and for the inactivation process called the heterogeneous Fenton-like reaction (H2O2 dose, mass ratio Fe/H2O2, pH and reaction time). The optimization of the significant factors was carried out using a face-centered central composite design. The optimal operating conditions for both processes were estimated with a statistical model and implemented experimentally with five replicates. The predicted value of the Ae inactivation rate was close to the laboratory results. At the optimal operating conditions of the nanocatalyst production and Ae inactivation process, the Ascaris ova showed genomic damage to the point that no cell reparation was possible showing that this advanced oxidation process was highly efficient for inactivating this pathogen.
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Research Article|
November 07 2015
Optimization of the synthesis process of an iron oxide nanocatalyst supported on activated carbon for the inactivation of Ascaris eggs in water using the heterogeneous Fenton-like reaction
Ariadna A. Morales-Pérez;
Ariadna A. Morales-Pérez
1Instituto de Ingeniería, Universidad Nacional Autónoma de México, México D.F., México
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Pablo Maravilla;
Pablo Maravilla
2Departamento de Ecología de Agentes Patógenos, Hospital General Dr. Manuel Gea González, SSA, México D.F. 14000, México
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Myriam Solís-López;
Myriam Solís-López
1Instituto de Ingeniería, Universidad Nacional Autónoma de México, México D.F., México
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Rafael Schouwenaars;
Rafael Schouwenaars
3Departamento de Materiales y Manufactura, DIMEI, Universidad Nacional Autónoma de México, México D.F., México
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Alfonso Durán-Moreno;
Alfonso Durán-Moreno
4Facultad de Química, Universidad Nacional Autónoma de México, Cd. Universitaria, Coyoacán, México, D. F. 04510, México
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Rosa-María Ramírez-Zamora
1Instituto de Ingeniería, Universidad Nacional Autónoma de México, México D.F., México
E-mail: [email protected]
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Water Sci Technol (2016) 73 (5): 1000–1009.
Article history
Received:
June 22 2015
Accepted:
October 28 2015
Citation
Ariadna A. Morales-Pérez, Pablo Maravilla, Myriam Solís-López, Rafael Schouwenaars, Alfonso Durán-Moreno, Rosa-María Ramírez-Zamora; Optimization of the synthesis process of an iron oxide nanocatalyst supported on activated carbon for the inactivation of Ascaris eggs in water using the heterogeneous Fenton-like reaction. Water Sci Technol 4 March 2016; 73 (5): 1000–1009. doi: https://doi.org/10.2166/wst.2015.576
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