Journal of Food, Agriculture and Environment

Treatment of liquid waste produced in a small chemical laboratory using the photo-Fenton process 

Author(s):

Pamela Barcelar Ferreira Gomes da Silva Luna ¹, Patrícia Melchionna Albuquerque ¹, Cláudia Candida Silva ¹, Agostinho da Silva Sobrinho ³, Márcio Barreto Rodrigues ⁴, João Vicente Braga de Souza ²*, Érica Simplício de Souza ¹

Recieved Date: 2012-09-14, Accepted Date: 2013-01-26

Abstract:

The photo-Fenton process, an advanced oxidative process (AOP), is a promising method for the treatment of liquid effluents. The aim of this work was to investigate the photo-Fenton process for the treatment of a  liquid waste produced in a chemical laboratory at the Technology Faculty (State University of Amazonas, UEA). The effluent was initially characterised for its colour, COD, total phenols and UV/VIS absorptivity. Later, the influence of Fe²⁺ and H₂O₂ was investigated for the reduction of colour and total phenol through a 2² factorial experiment arranged in a star. The characterised liquid residue presented high values for colour (2462.1 UC), phenols (90.96 mg/L) and Chemical Oxygen Demand (977.7 mg O₂/L) and, thus is potentially dangerous for the environment. The considered statistical models were in good agreement with the experimental results. The best theoretical conditions were 0.75 g/L of Fe⁺² and 16.03 g/L of H₂O₂ for colour reduction (99.6 %) and 0.59 g/L of Fe⁺² and 29.4 g/L of H₂O₂ for total phenol reduction (81.2 %). 

Keywords:

Effluent, photo-Fenton, advanced oxidative process

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Journal: Journal of Food, Agriculture and Environment
Year: 2013
Volume: 11
Issue: 1
Category: Environment
Pages: 1125-1128

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