Sorption isotherms of agricultural products
The aim of the paper is to expand the theory of sorption and equilibrium moisture contents as well as to present the methodology of developing two types of sorption isotherms - I and II. The attention is also paid to the importance of the isotherms in the thermodynamics of drying and in the process...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Czech Academy of Agricultural Sciences
2014-12-01
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| Series: | Research in Agricultural Engineering |
| Subjects: | |
| Online Access: | https://rae.agriculturejournals.cz/artkey/rae-201410-0007_sorption-isotherms-of-agricultural-products.php |
| _version_ | 1797897949076783104 |
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| author | I. Vitázek J. Havelka |
| author_facet | I. Vitázek J. Havelka |
| author_sort | I. Vitázek |
| collection | DOAJ |
| description | The aim of the paper is to expand the theory of sorption and equilibrium moisture contents as well as to present the methodology of developing two types of sorption isotherms - I and II. The attention is also paid to the importance of the isotherms in the thermodynamics of drying and in the process of storage of agricultural products. Presented methodology of obtaining the isotherms is based on selected equations of the theory of adsorption and on the results of experimental measurements of equilibrium moisture content. Definition of the new isotherm II is introduced as dependence of equilibrium moisture content dry basis on time at constant temperature, constant relative moisture of the ambient air and stable biological properties (e.g. germination). The results show following graphic dependences: isothermal distort plane; sorption isotherm I of maize grains at various temperatures; moisture loss rate in dependence on time and sorption isotherm II. These theoretical dependences supported by experimental measurements broaden the scope of the theory of sorption and may be successfully applied in long-term storage of maize grains. |
| first_indexed | 2024-04-10T08:06:31Z |
| format | Article |
| id | doaj.art-9b5fedfa5358402d850f3e6b81efcdf7 |
| institution | Directory Open Access Journal |
| issn | 1212-9151 1805-9376 |
| language | English |
| last_indexed | 2024-04-10T08:06:31Z |
| publishDate | 2014-12-01 |
| publisher | Czech Academy of Agricultural Sciences |
| record_format | Article |
| series | Research in Agricultural Engineering |
| spelling | doaj.art-9b5fedfa5358402d850f3e6b81efcdf72023-02-23T03:47:38ZengCzech Academy of Agricultural SciencesResearch in Agricultural Engineering1212-91511805-93762014-12-0160Special IssueS52S5610.17221/35/2013-RAErae-201410-0007Sorption isotherms of agricultural productsI. Vitázek0J. Havelka1Department of Transport and Handling, Faculty of Engineering, Slovak University of Agriculture in Nitra, Nitra, Slovak RepublicDepartment of Transport and Handling, Faculty of Engineering, Slovak University of Agriculture in Nitra, Nitra, Slovak RepublicThe aim of the paper is to expand the theory of sorption and equilibrium moisture contents as well as to present the methodology of developing two types of sorption isotherms - I and II. The attention is also paid to the importance of the isotherms in the thermodynamics of drying and in the process of storage of agricultural products. Presented methodology of obtaining the isotherms is based on selected equations of the theory of adsorption and on the results of experimental measurements of equilibrium moisture content. Definition of the new isotherm II is introduced as dependence of equilibrium moisture content dry basis on time at constant temperature, constant relative moisture of the ambient air and stable biological properties (e.g. germination). The results show following graphic dependences: isothermal distort plane; sorption isotherm I of maize grains at various temperatures; moisture loss rate in dependence on time and sorption isotherm II. These theoretical dependences supported by experimental measurements broaden the scope of the theory of sorption and may be successfully applied in long-term storage of maize grains.https://rae.agriculturejournals.cz/artkey/rae-201410-0007_sorption-isotherms-of-agricultural-products.phpequilibrium moisturedryingthermodynamicsorganic materialsdrying curve |
| spellingShingle | I. Vitázek J. Havelka Sorption isotherms of agricultural products Research in Agricultural Engineering equilibrium moisture drying thermodynamics organic materials drying curve |
| title | Sorption isotherms of agricultural products |
| title_full | Sorption isotherms of agricultural products |
| title_fullStr | Sorption isotherms of agricultural products |
| title_full_unstemmed | Sorption isotherms of agricultural products |
| title_short | Sorption isotherms of agricultural products |
| title_sort | sorption isotherms of agricultural products |
| topic | equilibrium moisture drying thermodynamics organic materials drying curve |
| url | https://rae.agriculturejournals.cz/artkey/rae-201410-0007_sorption-isotherms-of-agricultural-products.php |
| work_keys_str_mv | AT ivitazek sorptionisothermsofagriculturalproducts AT jhavelka sorptionisothermsofagriculturalproducts |