Block freeze concentration intensification by means of vacuum and microwave pulses
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| Format: | Artículo científico |
| Sprache: | en |
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Universidad del Valle
2015
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| _version_ | 1876453040690561024 |
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| author | J. Mauricio Pardo |
| author_facet | J. Mauricio Pardo |
| contents | Block freeze concentration intensification by means of vacuum and microwave pulses J. Mauricio Pardo Ricardo Sánchez Ingeniería vacuum Cryoconcentration microwave heating separation efficiency Block freeze concentration has gained interest as a separation technology since it is simpler than the suspensionprocess. However, it has not been implemented at an industrial level because its separation efficiency is lower thanthat of the traditional freeze concentration process. Therefore, numerous assisting techniques are being studied aroundthe world to overcome this deficiency. In this paper, the combination of microwave heating and vacuum separation isbeing studied and compared with convection heating and gravity separation. Separation efficiency was measured usingthe cumulative concentration factor (CumCI) and the area under the curve defined by yield (Y) as a function of thethawed fraction (f). It has been observed that all treatments that used vacuum as separation method showed a higherefficiency than those in similar processing conditions that used gravity as the separation method. Regarding the effectof microwave pulses, it has been observed that pulses below 2.4 kJ increased the separation efficiency when combinedwith the hydrodynamic effect generated by the vacuum pulses. 2015 artículo científico 0123-3033 https://www.redalyc.org/articulo.oa?id=291339265012 en http://www.redalyc.org/revista.oa?id=2913 Ingeniería y Competitividad application/pdf Universidad del Valle Ingeniería y Competitividad (Colombia) Num.1 Vol.17 |
| format | Artículo científico |
| id | redalyc_291339265012 |
| institution | Redalyc |
| language | en |
| publishDate | 2015 |
| publisher | Universidad del Valle |
| spellingShingle | Block freeze concentration intensification by means of vacuum and microwave pulses J. Mauricio Pardo Ingeniería vacuum Cryoconcentration microwave heating separation efficiency Block freeze concentration intensification by means of vacuum and microwave pulses J. Mauricio Pardo Ricardo Sánchez Ingeniería vacuum Cryoconcentration microwave heating separation efficiency Block freeze concentration has gained interest as a separation technology since it is simpler than the suspensionprocess. However, it has not been implemented at an industrial level because its separation efficiency is lower thanthat of the traditional freeze concentration process. Therefore, numerous assisting techniques are being studied aroundthe world to overcome this deficiency. In this paper, the combination of microwave heating and vacuum separation isbeing studied and compared with convection heating and gravity separation. Separation efficiency was measured usingthe cumulative concentration factor (CumCI) and the area under the curve defined by yield (Y) as a function of thethawed fraction (f). It has been observed that all treatments that used vacuum as separation method showed a higherefficiency than those in similar processing conditions that used gravity as the separation method. Regarding the effectof microwave pulses, it has been observed that pulses below 2.4 kJ increased the separation efficiency when combinedwith the hydrodynamic effect generated by the vacuum pulses. 2015 artículo científico 0123-3033 https://www.redalyc.org/articulo.oa?id=291339265012 en http://www.redalyc.org/revista.oa?id=2913 Ingeniería y Competitividad application/pdf Universidad del Valle Ingeniería y Competitividad (Colombia) Num.1 Vol.17 |
| title | Block freeze concentration intensification by means of vacuum and microwave pulses |
| topic | Ingeniería vacuum Cryoconcentration microwave heating separation efficiency |
| url | https://www.redalyc.org/articulo.oa?id=291339265012 |