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Título: | Treatment of liquid waste produced in a small chemical laboratory using the photo-fenton process |
Autor: | Silva Luna, Pamela Barcelar Ferreira Gomes da Albuquerque, Patrícia Melchionna Silva, Cláudia Cândida Silva Sobrinho, Agostinho da Barreto-Rodrigues, Marcio Souza, João Vicente Braga de Souza, Érica Simplício de |
Palavras-chave: | Ferrous Ion Hydrogen Peroxide Phenol Chemical Oxygen Demand Color Effluent Industrial Waste Oxidation Photo Fenton Process Spectrophotometry, Ultraviolet Waste Management |
Data do documento: | 2013 |
Revista: | Journal of Food, Agriculture and Environment |
É parte de: | Volume 11, Número 1, Pags. 1125-1128 |
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%). |
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