{"id":412,"date":"2019-03-06T13:44:24","date_gmt":"2019-03-06T16:44:24","guid":{"rendered":"https:\/\/silobags.org\/?p=412"},"modified":"2019-04-09T10:46:51","modified_gmt":"2019-04-09T13:46:51","slug":"modelado-matematico-silo-bolsa","status":"publish","type":"post","link":"http:\/\/progranos.org\/siloBolsa\/?p=412","title":{"rendered":"Mathematical modelling of oxygen and carb\u00f3n dioxide composition in the instertitical atmosphere of silo-bags"},"content":{"rendered":"\n


Authors: Abalone, R.<\/strong>1<\/strong><\/sup>, Gaston A.<\/strong>2<\/strong><\/sup>, Bartosik, R.<\/strong>3<\/strong><\/sup>, Rodriguez, J.<\/strong>3<\/strong><\/sup><\/p>\n\n\n\n

1\nFac. de Cs. Exactas Ingenier\u00eda y Agrimensura, UNR, IFIR\n(CONICET\/UNR).<\/p>\n\n\n\n

2 Consejo de Investigaciones de la UNR, Fac. de Cs. Exactas Ingenier\u00eda y Agrimensura, UNR. Av. Pellegrini 250, (2000) Rosario, Argentina.<\/p>\n\n\n\n

3\nUnidad Integrada INTA- Facultad de Ciencias Agrarias, Universidad\nNacional de Mar del Plata. Ruta 226 Km 73,5, (7620) Balcarce, Buenos\nAires, Argentina.<\/p>\n\n\n\n

Abstract:<\/strong><\/p>\n\n\n\n

\nThe\nCO2<\/sub>\nand\nO2<\/sub>\nconcentration\nin hermetic storage systems depends on the balance between\nrespiration of the ecosystem (consumption of O2\n<\/sub>and\ngeneration of CO2<\/sub>),\nthe entrance of external O2\n<\/sub>to\nthe system, and the loss of CO2<\/sub>\nto\nthe ambient air. A preliminary model was developed to simulate the\ngas exchange in silo-bags, considering the aerobic grains and\nmicroflora CO2<\/sub>\nproduction and neglecting the contribution by insect respiration.\nDependence of the rate of CO2<\/sub>\nproduction on grain temperature, moisture content and storage time\nwas taken into account and evaluated by use of the correlation\ndeveloped by White et\nal.<\/em>\n(1982) for wheat. The influence of initial grain temperature (25, 30\nand 43\u00baC) and moisture content (12 -16 % w.b.) as well as degree of\ngas-tightness of the silo-bag was investigated. The model was run for\nthe climatic conditions of the south east of Buenos Aires province,\nArgentina, for a storage period of 6 months, from January to July.\nThe gas concentration predicted by the model under different storage\nconditions was compared with data available from a series of field\nexperiments developed by INTA-EEA Balcarce. Globally, predicted\nvalues were in good accordance with the measured levels of gas\nconcentrations. For all temperatures, at 12% w.b, the CO2<\/sub>\nconcentration\nremained below 4%. At 30\u00baC and 14% w.b., CO2<\/sub>\nlevel\nincreased to 12%. At 15% and 16% w.b, O2<\/sub>\nwas\nconsumed after 80 and 40 days, respectively. CO2\n<\/sub>reached\n21% and then, because of the loss to ambient air (differential\npermeability for O2<\/sub>\nand\nCO2<\/sub>),\nit fell below 16%. At 43\u00baC, O2<\/sub>\nwas\nconsumed after 80 and 25 and 10 days, for 14, 15 and 16% w.b.\nrespectively. Under these conditions, CO2<\/sub>\nreached\n21% and then fell below 15%.<\/p>\n\n\n\n

\n\n\n\n
Abalone et al. 2009. Mathematical modelling of oxygen and carbon dioxide composition in the insterstitital atmosphere of silo-bags<\/a>Descargar <\/a><\/div>\n","protected":false},"excerpt":{"rendered":"

Authors: Abalone, R.1, Gaston A.2, Bartosik, R.3, Rodriguez, J.3 1 Fac. de Cs. Exactas Ingenier\u00eda y Agrimensura, UNR, IFIR (CONICET\/UNR). 2 Consejo de Investigaciones de la UNR, Fac. de Cs. Exactas Ingenier\u00eda y Agrimensura, UNR. Av. Pellegrini 250, (2000) Rosario, Argentina. 3 Unidad Integrada INTA- Facultad de Ciencias Agrarias, Universidad Nacional de Mar del Plata. […]<\/p>\n","protected":false},"author":1,"featured_media":414,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[],"_links":{"self":[{"href":"http:\/\/progranos.org\/siloBolsa\/index.php?rest_route=\/wp\/v2\/posts\/412"}],"collection":[{"href":"http:\/\/progranos.org\/siloBolsa\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/progranos.org\/siloBolsa\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/progranos.org\/siloBolsa\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/progranos.org\/siloBolsa\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=412"}],"version-history":[{"count":5,"href":"http:\/\/progranos.org\/siloBolsa\/index.php?rest_route=\/wp\/v2\/posts\/412\/revisions"}],"predecessor-version":[{"id":537,"href":"http:\/\/progranos.org\/siloBolsa\/index.php?rest_route=\/wp\/v2\/posts\/412\/revisions\/537"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/progranos.org\/siloBolsa\/index.php?rest_route=\/wp\/v2\/media\/414"}],"wp:attachment":[{"href":"http:\/\/progranos.org\/siloBolsa\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=412"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/progranos.org\/siloBolsa\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=412"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/progranos.org\/siloBolsa\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=412"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}