Cassava starch extraction effluent treatment in a one phase tubular horizontal pilot reactor with support medium
The cassava starch industries generate a large volume of wastewater effluent that, stabilized in ponds, wastes its biogas energy and pollutes the atmosphere. To contribute with the reversion of this reality, this manipueira treatment research was developed in one phase anaerobic horizontal pilot rea...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Engenharia Agrícola
2014-12-01
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| Series: | Engenharia Agrícola |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000600021&tlng=en |
| _version_ | 1818731232861618176 |
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| author | Osvaldo Kuczman Maria H. F. Tavares Simone D. Gomes Luciana P. C. Guedes Geovane Grisotti |
| author_facet | Osvaldo Kuczman Maria H. F. Tavares Simone D. Gomes Luciana P. C. Guedes Geovane Grisotti |
| author_sort | Osvaldo Kuczman |
| collection | DOAJ |
| description | The cassava starch industries generate a large volume of wastewater effluent that, stabilized in ponds, wastes its biogas energy and pollutes the atmosphere. To contribute with the reversion of this reality, this manipueira treatment research was developed in one phase anaerobic horizontal pilot reactor with support medium in bamboo pieces. The reactor was excavated into the ground and sealed with geomembrane in HDPE, having a volume equal to 33.6 m³ and continuous feeding by gravity. The stability indicators were pH, volatile acidity/total alkalinity ratio and biogas production. The statistical analyses were performed by a completely randomized design, with answers submitted to multivariate analysis. The organical loads in COD were 0.556; 0.670; 0.678 and 0.770 g L-1 and in volatile solids (VS) of 0.659; 0.608; 0.570 and 0.761 g L-1 for the hydraulic retention times (HRT) of 13.0; 11.5; 10.0 and 7.0 days, respectively. The reductions in COD were 88; 80; 88 and 67% and for VS of 76; 77; 65 and 61%. The biogas productions relatively to the consumed COD were 0.368; 0.795; 0.891 and 0.907 Lg-1, for the consumed VS of 0.524; 0.930; 1.757 and 0.952 Lg-1 and volumetric of 0.131; 0.330; 0.430 and 0.374 L L-1 d-1. The reactor remained stable and the bamboo pieces, in visual examination at the end of the experiment, showed to be in good physical conditions. |
| first_indexed | 2024-12-17T23:14:25Z |
| format | Article |
| id | doaj.art-e6ffd1f0247d4a2d9ec66d2d5801fdeb |
| institution | Directory Open Access Journal |
| issn | 0100-6916 |
| language | English |
| last_indexed | 2024-12-17T23:14:25Z |
| publishDate | 2014-12-01 |
| publisher | Sociedade Brasileira de Engenharia Agrícola |
| record_format | Article |
| series | Engenharia Agrícola |
| spelling | doaj.art-e6ffd1f0247d4a2d9ec66d2d5801fdeb2022-12-21T21:29:02ZengSociedade Brasileira de Engenharia AgrícolaEngenharia Agrícola0100-69162014-12-013461270128210.1590/S0100-69162014000600021Cassava starch extraction effluent treatment in a one phase tubular horizontal pilot reactor with support mediumOsvaldo Kuczman0Maria H. F. Tavares1Simone D. Gomes2Luciana P. C. Guedes3Geovane Grisotti4Universidade Estadual do Oeste do ParanáUniversidade Estadual do Oeste do ParanáUniversidade Estadual do Oeste do ParanáUniversidade Estadual do Oeste do ParanáUniversidade Estadual do Oeste do ParanáThe cassava starch industries generate a large volume of wastewater effluent that, stabilized in ponds, wastes its biogas energy and pollutes the atmosphere. To contribute with the reversion of this reality, this manipueira treatment research was developed in one phase anaerobic horizontal pilot reactor with support medium in bamboo pieces. The reactor was excavated into the ground and sealed with geomembrane in HDPE, having a volume equal to 33.6 m³ and continuous feeding by gravity. The stability indicators were pH, volatile acidity/total alkalinity ratio and biogas production. The statistical analyses were performed by a completely randomized design, with answers submitted to multivariate analysis. The organical loads in COD were 0.556; 0.670; 0.678 and 0.770 g L-1 and in volatile solids (VS) of 0.659; 0.608; 0.570 and 0.761 g L-1 for the hydraulic retention times (HRT) of 13.0; 11.5; 10.0 and 7.0 days, respectively. The reductions in COD were 88; 80; 88 and 67% and for VS of 76; 77; 65 and 61%. The biogas productions relatively to the consumed COD were 0.368; 0.795; 0.891 and 0.907 Lg-1, for the consumed VS of 0.524; 0.930; 1.757 and 0.952 Lg-1 and volumetric of 0.131; 0.330; 0.430 and 0.374 L L-1 d-1. The reactor remained stable and the bamboo pieces, in visual examination at the end of the experiment, showed to be in good physical conditions.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000600021&tlng=enbiodigesterbiogasanaerobic digestioncassavacassava wastewater |
| spellingShingle | Osvaldo Kuczman Maria H. F. Tavares Simone D. Gomes Luciana P. C. Guedes Geovane Grisotti Cassava starch extraction effluent treatment in a one phase tubular horizontal pilot reactor with support medium Engenharia Agrícola biodigester biogas anaerobic digestion cassava cassava wastewater |
| title | Cassava starch extraction effluent treatment in a one phase tubular horizontal pilot reactor with support medium |
| title_full | Cassava starch extraction effluent treatment in a one phase tubular horizontal pilot reactor with support medium |
| title_fullStr | Cassava starch extraction effluent treatment in a one phase tubular horizontal pilot reactor with support medium |
| title_full_unstemmed | Cassava starch extraction effluent treatment in a one phase tubular horizontal pilot reactor with support medium |
| title_short | Cassava starch extraction effluent treatment in a one phase tubular horizontal pilot reactor with support medium |
| title_sort | cassava starch extraction effluent treatment in a one phase tubular horizontal pilot reactor with support medium |
| topic | biodigester biogas anaerobic digestion cassava cassava wastewater |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000600021&tlng=en |
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