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Vinasse treatment by coupling of electro-dissolution, heterocoagulation and anaerobic digestion

Paz-Pino, Olga Lucía and Barba-Ho, Luz Edith and Marriaga Cabrales, Nilson (2014) Vinasse treatment by coupling of electro-dissolution, heterocoagulation and anaerobic digestion. Dyna; Vol. 81, núm. 187 (2014); 102-107 DYNA; Vol. 81, núm. 187 (2014); 102-107 2346-2183 0012-7353 .

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URL oficial: http://revistas.unal.edu.co/index.php/dyna/article...

Resumen

The distillery vinasse is the most important liquid effluent of the ethanol production process and it is characterized by a high chemical oxygen demand (COD) and high biochemical oxygen demand (BOD); besides its acid pH and dark brown color. Phenol content in vinasse causes inhibitory effects on anaerobic digestion processes and has an adverse environmental impact. An alternative for treating vinasse from distilleries by using the electro-dissolution of iron and a heterocoagulation stage with Ca(OH)2 as a pretreatment was evaluated. Removals of 92% in phenols and 52% in chemical oxygen demand (COD) were obtained. Then, the pretreated vinasse was undergone to an anaerobic digestion process. Global removals to around 93% in biochemical oxygen demand (BOD5), 83% in COD, and over 99% in total phenols were obtained. Finally, an eco-toxicological evaluation using Daphnia pulex was carried out, and it was found that the coupling treatment increased the medium lethal concentration (LC50) to around 190%.

Tipo de documento:Artículo - Article
Información adicional:Derechos de autor reservados
Palabras clave:Vinasse, phenols; electro-dissolution; heterocoagulation; anaerobic process; Daphnia pulex
Unidad administrativa:Revistas electrónicas UN > Dyna
Código ID:44459
Enviado por : Dirección Nacional de Bibliotecas STECNICO
Enviado el día :25 Oct 2014 08:56
Ultima modificación:27 Noviembre 2017 22:11
Ultima modificación:27 Noviembre 2017 22:11
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