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Optimized CWPO phenol oxidation in CSTR reactor catalyzed by Al/Fe-PILC from concentrated precursors at circumneutral pH

Ramirez, Jose H. Y Galeano, Luis-Alejandro Y Pinchao, Gustavo Y Hidalgo-Troya, Arsenio (2018) Optimized CWPO phenol oxidation in CSTR reactor catalyzed by Al/Fe-PILC from concentrated precursors at circumneutral pH. Journal of Environmental Chemical Engineering, 6 (2). pp. 2429-2441.

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URL Oficial: https://www.sciencedirect.com/science/article/pii/...

Resumen

The catalytic wet hydrogen peroxide oxidation of phenol catalyzed by an Al/Fe-PILC clay catalyst has been optimized in CSTR reactor. In order to get it more cost-effective, the process was optimized by simultaneous maximization of pollutant’s degradation and mineralization, whereas minimizing H2O2 consumption under very mild conditions of the covariates pH (4.5–11.3), temperature (5.0–25.9 °C) and input concentrations of phenol ranging 8.45–33.1 mg C/dm³ (expressed as TOC concentration); such a set of conditions resembled those typical in surface waters. A central composite statistical experimental design was developed, followed by optimization via response surface methodology with H2O2 dose (50.0–146.5% of the stoichiometric required for full oxidation) and catalyst concentration (0.5–3.0 g/dm³) as experimental factors. Covariate’s analysis showed that input TOC concentration and temperature were the most influencing ones, whereas pH did not result significant on any of the recorded responses within the assessed range (4.5–11.3). Optimal multi-response performance was achieved (65% of phenol degradation and 31% of TOC removal; 650 mg H2O2/dm³ in output stream) under stationary state with residence time of 135 min, room temperature (18 +/− 1.0 °C) and neutral pH by using 1.77 g/dm³ of the clay-catalyst and tiny stoichiometric excess of the oxidizing agent (108% of the stoichiometric dose). Optimized CWPO phenol oxidation in CSTR reactor catalyzed by.... Available from: https://www.researchgate.net/publication/323217042_Optimized_CWPO_phenol_oxidation_in_CSTR_reactor_catalyzed_by_AlFe-PILC_from_concentrated_precursors_at_circumneutral_pH [accessed Apr 18 2018].

Tipo de Elemento: Artículo
Palabras Clave: CSTR reactorAl/Fe-PILC catalystHeterogeneous fentonPhenol degradationResponse surface methodology
Asunto: Q Ciencias > QD Chemistry
Division: Facultad de Ciencias Exactas y Naturales > Programa de Química > Productividad
Depósito de Usuario: PhD Luis Alejandro Galeano
Fecha Deposito: 23 Abr 2018 14:39
Ultima Modificación: 21 May 2018 16:39
URI: http://sired.udenar.edu.co/id/eprint/4428

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