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Treatment of municipal leachate of landfill by Fenton-like heterogeneous catalytic wet peroxide oxidation using an Al/Fe-pillared montmorillonite as active catalyst

Galeano, Luis-Alejandro Y Vicente, M. Angel Y Gil, Antonio (2011) Treatment of municipal leachate of landfill by Fenton-like heterogeneous catalytic wet peroxide oxidation using an Al/Fe-pillared montmorillonite as active catalyst. Chemical Engineering Journal, 178 (14). pp. 146-153.

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

Resumen

Catalytic wet peroxide oxidation (CWPO) with an Al/Fe-pillared clay catalyst was assessed in the treat-ment of stabilized leachate of landfill (COD = 5000–7000 mg O 2 /dm 3 ; BOD 5 ∼ 800 mg O 2 /dm 3 ; pH = 8.0; BOD 5 /COD = 0.11–0.16). The effects of catalyst loading (0.5–2.0 g catalyst /100 cm 3 leachate), added peroxide concentration (2.34–4.68 mol/dm 3) and its rate of stepwise addition (7.5–30 cm 3 /h) in a semi-batch reactor, were studied with COD removal and biodegradability index (BI) 1 as response parameters. COD removals up to 50% and BI output values exceeding 0.3 were achieved in 4 h of reaction at very mild con-ditions of room temperature and atmospheric pressure (291 K; 72 kPa). High catalyst loadings together with low peroxide concentrations and dosages (below stoichiometric for total mineralization) and low peroxide addition rates were found to provide better use of the oxidizing agent in terms of both, BI enhancement and COD removal. The clay catalyst resulted quite stable against the chemical leaching of the active iron along the catalytic reactions.

Tipo de Elemento: Artículo
Palabras Clave: Al/Fe-pillared clayLeachate of landfillCatalytic wet peroxide oxidationHeterogeneous Fenton oxidation
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: 07 May 2018 17:42
Ultima Modificación: 07 May 2018 17:42
URI: http://sired.udenar.edu.co/id/eprint/4500

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