Optimization of anaerobic treatment of cassava processing wastewater
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/1809-4430-eng.agric.v37n3p574-590/2017 http://hdl.handle.net/11449/169831 |
Resumo: | The main contribution of this research is to optimize the operating conditions of an anaerobic reactor applied to the treatment of wastewater from cassava starch production. A 20-L anaerobic reactor was used, operating in a batch system, with temperature control. Temperature and inoculum total volatile solids (TVSi) were controlled for evaluation of effects on the removals of chemical oxygen demand (COD) and reactor total volatile solids (TVSr) by means of a Central Composite Rotational Design (CCRD). Twelve trials were analyzed simultaneously by the desirable function approach. The higher COD removal (96.82%) was obtained at 42 °C and 12.0% TVSi. The largest TVSr removal (69.31%) was registered at 45 °C and 10.0% TVSi. Equations representative of the process were obtained from the responses of variables, being statistically significant at a 90% confidence level. Based on the desirability function approach, we can conclude that an optimal operational condition for the anaerobic reactor is at 39.7 °C and 10.8% TVSi. The estimated COD and TVSr removal efficiencies under these operating conditions were 90.45% and 63.12%, respectively. |
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Repositório Institucional da UNESP |
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Optimization of anaerobic treatment of cassava processing wastewaterAnaerobic reactorBiogasDesirability functionMathematical modelingThe main contribution of this research is to optimize the operating conditions of an anaerobic reactor applied to the treatment of wastewater from cassava starch production. A 20-L anaerobic reactor was used, operating in a batch system, with temperature control. Temperature and inoculum total volatile solids (TVSi) were controlled for evaluation of effects on the removals of chemical oxygen demand (COD) and reactor total volatile solids (TVSr) by means of a Central Composite Rotational Design (CCRD). Twelve trials were analyzed simultaneously by the desirable function approach. The higher COD removal (96.82%) was obtained at 42 °C and 12.0% TVSi. The largest TVSr removal (69.31%) was registered at 45 °C and 10.0% TVSi. Equations representative of the process were obtained from the responses of variables, being statistically significant at a 90% confidence level. Based on the desirability function approach, we can conclude that an optimal operational condition for the anaerobic reactor is at 39.7 °C and 10.8% TVSi. The estimated COD and TVSr removal efficiencies under these operating conditions were 90.45% and 63.12%, respectively.Universidade Estadual do Oeste do Paraná - UNIOESTEUniversidade Tecnológica Federal do Paraná - UTFPRUniversidade Estadual Paulista - UNESPUniversidade Estadual Paulista - UNESPUniversidade Estadual do Oeste do Paraná - UNIOESTEUniversidade Tecnológica Federal do Paraná - UTFPRUniversidade Estadual Paulista (Unesp)Fleck, LeandroTavares, Maria H.F.Eyng, EduardoDe Andrade, Minéia A.De M. [UNESP]Frare, Laercio M.2018-12-11T16:47:47Z2018-12-11T16:47:47Z2017-05-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article574-590application/pdfhttp://dx.doi.org/10.1590/1809-4430-eng.agric.v37n3p574-590/2017Engenharia Agricola, v. 37, n. 3, p. 574-590, 2017.1808-43890100-6916http://hdl.handle.net/11449/16983110.1590/1809-4430-eng.agric.v37n3p574-590/2017S0100-691620170003005742-s2.0-85020644103S0100-69162017000300574.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengEngenharia Agricola0,305info:eu-repo/semantics/openAccess2023-11-11T06:10:46Zoai:repositorio.unesp.br:11449/169831Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:22:30.019125Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Optimization of anaerobic treatment of cassava processing wastewater |
title |
Optimization of anaerobic treatment of cassava processing wastewater |
spellingShingle |
Optimization of anaerobic treatment of cassava processing wastewater Fleck, Leandro Anaerobic reactor Biogas Desirability function Mathematical modeling |
title_short |
Optimization of anaerobic treatment of cassava processing wastewater |
title_full |
Optimization of anaerobic treatment of cassava processing wastewater |
title_fullStr |
Optimization of anaerobic treatment of cassava processing wastewater |
title_full_unstemmed |
Optimization of anaerobic treatment of cassava processing wastewater |
title_sort |
Optimization of anaerobic treatment of cassava processing wastewater |
author |
Fleck, Leandro |
author_facet |
Fleck, Leandro Tavares, Maria H.F. Eyng, Eduardo De Andrade, Minéia A.De M. [UNESP] Frare, Laercio M. |
author_role |
author |
author2 |
Tavares, Maria H.F. Eyng, Eduardo De Andrade, Minéia A.De M. [UNESP] Frare, Laercio M. |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual do Oeste do Paraná - UNIOESTE Universidade Tecnológica Federal do Paraná - UTFPR Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Fleck, Leandro Tavares, Maria H.F. Eyng, Eduardo De Andrade, Minéia A.De M. [UNESP] Frare, Laercio M. |
dc.subject.por.fl_str_mv |
Anaerobic reactor Biogas Desirability function Mathematical modeling |
topic |
Anaerobic reactor Biogas Desirability function Mathematical modeling |
description |
The main contribution of this research is to optimize the operating conditions of an anaerobic reactor applied to the treatment of wastewater from cassava starch production. A 20-L anaerobic reactor was used, operating in a batch system, with temperature control. Temperature and inoculum total volatile solids (TVSi) were controlled for evaluation of effects on the removals of chemical oxygen demand (COD) and reactor total volatile solids (TVSr) by means of a Central Composite Rotational Design (CCRD). Twelve trials were analyzed simultaneously by the desirable function approach. The higher COD removal (96.82%) was obtained at 42 °C and 12.0% TVSi. The largest TVSr removal (69.31%) was registered at 45 °C and 10.0% TVSi. Equations representative of the process were obtained from the responses of variables, being statistically significant at a 90% confidence level. Based on the desirability function approach, we can conclude that an optimal operational condition for the anaerobic reactor is at 39.7 °C and 10.8% TVSi. The estimated COD and TVSr removal efficiencies under these operating conditions were 90.45% and 63.12%, respectively. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-05-01 2018-12-11T16:47:47Z 2018-12-11T16:47:47Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/1809-4430-eng.agric.v37n3p574-590/2017 Engenharia Agricola, v. 37, n. 3, p. 574-590, 2017. 1808-4389 0100-6916 http://hdl.handle.net/11449/169831 10.1590/1809-4430-eng.agric.v37n3p574-590/2017 S0100-69162017000300574 2-s2.0-85020644103 S0100-69162017000300574.pdf |
url |
http://dx.doi.org/10.1590/1809-4430-eng.agric.v37n3p574-590/2017 http://hdl.handle.net/11449/169831 |
identifier_str_mv |
Engenharia Agricola, v. 37, n. 3, p. 574-590, 2017. 1808-4389 0100-6916 10.1590/1809-4430-eng.agric.v37n3p574-590/2017 S0100-69162017000300574 2-s2.0-85020644103 S0100-69162017000300574.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Engenharia Agricola 0,305 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
574-590 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128800790151168 |