Effect of different technologies and animal manures on solid-liquid separation efficiencies
Solid-liquid separation is a widely used manure treatment option. However, little information is available to predict separator performance in a specific operating condition. This study investigates the effect on the separation efficiency of animal species (cattle and swine), use of flocculants, and...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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PAGEPress Publications
2012-09-01
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| Series: | Journal of Agricultural Engineering |
| Subjects: | |
| Online Access: | http://www.agroengineering.org/index.php/jae/article/view/13 |
| _version_ | 1818324309294186496 |
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| author | Giorgia Cocolo Silvia Curnis Maibritt Hjorth Giorgio Provolo |
| author_facet | Giorgia Cocolo Silvia Curnis Maibritt Hjorth Giorgio Provolo |
| author_sort | Giorgia Cocolo |
| collection | DOAJ |
| description | Solid-liquid separation is a widely used manure treatment option. However, little information is available to predict separator performance in a specific operating condition. This study investigates the effect on the separation efficiency of animal species (cattle and swine), use of flocculants, and separator construction and operating characteristics (filtration, pressurised filtration, settling and centrifugation). Using data available from published experiments, we evaluated correlations of the separation efficiencies with the physical and chemical characteristics of the inlet slurries (dry matter, total nitrogen, ammoniacal nitrogen, phosphorus and potassium). Dry matter concentration of the input manure was found to be the best parameter used to calculate and validate regression equations. Regres sions for the operating conditions of 7 of the 14 subgroups evaluated were significant (P<0.05) for at least one parameter. Pressurised filtration seems to be the process best represented by these regressions that can predict dry matter and nitrogen efficiency with relative root mean squared errors of less than 50%. However, they could only be used for some of the parameters and separation techniques. Therefore, it was not possible to use the available experimental data to define and validate empirical predictive models for all the conditions. Specific studies are needed to define more precise and physically-based models. |
| first_indexed | 2024-12-13T11:26:32Z |
| format | Article |
| id | doaj.art-cd3f29d25c8e464b870d972ac0d191e5 |
| institution | Directory Open Access Journal |
| issn | 1974-7071 2239-6268 |
| language | English |
| last_indexed | 2024-12-13T11:26:32Z |
| publishDate | 2012-09-01 |
| publisher | PAGEPress Publications |
| record_format | Article |
| series | Journal of Agricultural Engineering |
| spelling | doaj.art-cd3f29d25c8e464b870d972ac0d191e52022-12-21T23:48:12ZengPAGEPress PublicationsJournal of Agricultural Engineering1974-70712239-62682012-09-01432e9e910.4081/jae.2012.e9142Effect of different technologies and animal manures on solid-liquid separation efficienciesGiorgia Cocolo0Silvia Curnis1Maibritt Hjorth2Giorgio Provolo3Department of Agricultural Engineering, University of MilanoDepartment of Agricultural Engineering, University of MilanoDepartment of Engineering, University of Aarhus, TjeleDepartment of Agricultural Engineering, University of MilanoSolid-liquid separation is a widely used manure treatment option. However, little information is available to predict separator performance in a specific operating condition. This study investigates the effect on the separation efficiency of animal species (cattle and swine), use of flocculants, and separator construction and operating characteristics (filtration, pressurised filtration, settling and centrifugation). Using data available from published experiments, we evaluated correlations of the separation efficiencies with the physical and chemical characteristics of the inlet slurries (dry matter, total nitrogen, ammoniacal nitrogen, phosphorus and potassium). Dry matter concentration of the input manure was found to be the best parameter used to calculate and validate regression equations. Regres sions for the operating conditions of 7 of the 14 subgroups evaluated were significant (P<0.05) for at least one parameter. Pressurised filtration seems to be the process best represented by these regressions that can predict dry matter and nitrogen efficiency with relative root mean squared errors of less than 50%. However, they could only be used for some of the parameters and separation techniques. Therefore, it was not possible to use the available experimental data to define and validate empirical predictive models for all the conditions. Specific studies are needed to define more precise and physically-based models.http://www.agroengineering.org/index.php/jae/article/view/13correlation, efficiency, manure, separation, treatment. |
| spellingShingle | Giorgia Cocolo Silvia Curnis Maibritt Hjorth Giorgio Provolo Effect of different technologies and animal manures on solid-liquid separation efficiencies Journal of Agricultural Engineering correlation, efficiency, manure, separation, treatment. |
| title | Effect of different technologies and animal manures on solid-liquid separation efficiencies |
| title_full | Effect of different technologies and animal manures on solid-liquid separation efficiencies |
| title_fullStr | Effect of different technologies and animal manures on solid-liquid separation efficiencies |
| title_full_unstemmed | Effect of different technologies and animal manures on solid-liquid separation efficiencies |
| title_short | Effect of different technologies and animal manures on solid-liquid separation efficiencies |
| title_sort | effect of different technologies and animal manures on solid liquid separation efficiencies |
| topic | correlation, efficiency, manure, separation, treatment. |
| url | http://www.agroengineering.org/index.php/jae/article/view/13 |
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