Anaerobic biodegradation of cassava wastewater  under different temperatures and inoculums

Amorim, Miriam Cleide Cavalcante de; Silva, Paula Tereza de Souza; Barbosa, Patricia Silva; Montefusco, Nayara Evelyn

DSpace Principal
→
Colección de los Centros Asociados
→
Brasil
→
Núcleo de Pesquisa sobre Crianças, Adolescestes e Jovens - Universidade Federal do Piauí - NUPEC/UFPI - Cosecha
→
Ver ítem

dc.creator	Amorim, Miriam Cleide Cavalcante de
dc.creator	Silva, Paula Tereza de Souza
dc.creator	Barbosa, Patricia Silva
dc.creator	Montefusco, Nayara Evelyn
dc.date	2019-04-17
dc.date.accessioned	2023-03-30T19:35:13Z
dc.date.available	2023-03-30T19:35:13Z
dc.identifier	https://comunicatascientiae.com.br/comunicata/article/view/3009
dc.identifier	10.14295/cs.v10i1.3009
dc.identifier.uri	https://biblioteca-repositorio.clacso.edu.ar/handle/CLACSO/246833
dc.description	The production of starch generates, as a by-product, the cassava wastewater (manipueira), which can be treated by anaerobic digestion to provide biogas and minimize its polluting potential. The most commonly utilized biomass in the anaerobic digestion is the anaerobic sludge. The literature presents, as an alternative to sludge, bovine manure and ruminal fluids, being scarce the studies with the cassava wastewater. This research evaluated the influence of temperature on the microbial ability of cattle and goat rumen in anaerobically biodegrading the manipueira in substitution to the anaerobic sludge. The cattle and goat rumen specific methanogenic activities (SMA) were compared with that of the anaerobic sludge. Subsequently, by using the inoculum which had the best SMA results, cassava wastewater biodegradability tests were performed, investigating the kinetics of the organic matter removal and methane production at 32 ° C and 39 ° C. The bovine rumen presented better results in the SMA (0,315 g COD-CH4 g VSS.d-1) and methane production (1,026 mL). The temperature of 32 °C did not influence the activity of bovine ruminal inoculum as the kinetics of the biodegradation of the manipueira did not differ for the evaluated temperatures (0.1799 d-1 at 32°C and 0.1781 d-1 at 39°C). Bovine rumen achieved glucose reduction of 76% and 80% and methane yield of 77% and 79% for the tests at 32°C and 39°C, respectively. It is inferred that this type of inoculum might be used in reactors of anaerobic digestion processes for the treatment of the cassava wastewater at the ambient temperature of the semiarid region.	en-US
dc.description	The production of starch generates, as a by-product, the cassava wastewater (manipueira), which can be treated by anaerobic digestion to provide biogas and minimize its polluting potential. The most commonly utilized biomass in the anaerobic digestion is the anaerobic sludge. The literature presents, as an alternative to sludge, bovine manure and ruminal fluids, being scarce the studies with the cassava wastewater. This research evaluated the influence of temperature on the microbial ability of cattle and goat rumen in anaerobically biodegrading the manipueira in substitution to the anaerobic sludge. The cattle and goat rumen specific methanogenic activities (SMA) were compared with that of the anaerobic sludge. Subsequently, by using the inoculum which had the best SMA results, cassava wastewater biodegradability tests were performed, investigating the kinetics of the organic matter removal and methane production at 32 ° C and 39 ° C. The bovine rumen presented better results in the SMA (0,315 g COD-CH4 g VSS.d-1) and methane production (1,026 mL). The temperature of 32 °C did not influence the activity of bovine ruminal inoculum as the kinetics of the biodegradation of the manipueira did not differ for the evaluated temperatures (0.1799 d-1 at 32°C and 0.1781 d-1 at 39°C). Bovine rumen achieved glucose reduction of 76% and 80% and methane yield of 77% and 79% for the tests at 32°C and 39°C, respectively. It is inferred that this type of inoculum might be used in reactors of anaerobic digestion processes for the treatment of the cassava wastewater at the ambient temperature of the semiarid region.	pt-BR
dc.format	application/pdf
dc.language	eng
dc.publisher	Federal University of Piauí	en-US
dc.relation	https://comunicatascientiae.com.br/comunicata/article/view/3009/791
dc.rights	Copyright (c) 2019 Miriam Cleide Cavalcante de Amorim, Paula Tereza de Souza Silva, Patricia Silva Barbosa, Nayara Evelyn Montefusco	en-US
dc.source	Comunicata Scientiae; Vol. 10 No. 1 (2019); 65-76	en-US
dc.source	Comunicata Scientiae; v. 10 n. 1 (2019); 65-76	pt-BR
dc.source	2177-5133
dc.source	2176-9079
dc.title	Anaerobic biodegradation of cassava wastewater under different temperatures and inoculums	en-US
dc.title	Anaerobic biodegradation of cassava wastewater under different temperatures and inoculums	pt-BR
dc.type	info:eu-repo/semantics/article
dc.type	info:eu-repo/semantics/publishedVersion