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Development of a bench scale system for anaerobic acidogenic digestion os wasterwater from isolated soy protein

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Development of a bench scale system for anaerobic acidogenic digestion os wasterwater from isolated soy protein

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Título Development of a bench scale system for anaerobic acidogenic digestion os wasterwater from isolated soy protein
Autor Cassini, Aline Schilling
Tessaro, Isabel Cristina
Marczak, Ligia Damasceno Ferreira
Abstract Wastewater from isolated soy protein (ISP) production is characterized by high organic load. A complex primary wastewater treatment system has been studied: an anaerobic acidogenic reactor, a tubular reactor and a sedimentation tank. Anaerobic digestion is a very complex process; the control of temperature, pH, alkalinity, TSS/VSS and COD is fundamental. The objective was to develop and compare the efficiency of a bench scale anaerobic acidogenic reactor, followed by the precipitation, coagulation and sedimentation steps, with an existing industrial ISP wastewater treatment system. The results obtained with bench system (reaction time of 6 h, 48 °C) were very close to the industrial ones: pH reduction of 4.5 to 3.7 (indicating the protein hydrolysis), high VFA accumulation (1,300 and 2,650 mg.L-1 minimum and maximum concentration), no methane production and increase in TSS/VSS. This study gives an insight of the industrial primary wastewater treatment system and can be useful in future researches.
Contido em Latin american applied research = Pesquisa aplicada latinoamericana = Investigación aplicada latinoamericana. Bahía Blanca. Vol. 40, no. 3 (jul. 2010), p. 275-281
Assunto Proteína texturizada de soja
Tratamento de efluentes
[en] Acidogenisis
[en] anaerobic digestion
[en] isolated soy protein
[en] wastewater treatment
Origem Estrangeiro
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/88052
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