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  1. Article: Geometric and Thermo-Gravimetric Evaluation of Bananas during Convective Drying: An Experimental Investigation

    Farias, Raimundo P. / Gomez, Ricardo S. / Lima, Elisiane S. / Silva, Wilton P. / Santos, Ivonete B. / Figueredo, Maria J. / Almeida, Genival S. / Rolim, Fagno D. / Oliveira, Vital A. B. / Oliveira Neto, Guilherme L. / Lima, Antonio G. B.

    Agriculture (Basel). 2022 Aug. 09, v. 12, no. 8

    2022  

    Abstract: Fresh bananas are fruits with high moisture content after harvest and are submitted to a drying process to minimize waste and increase shelf life. This work aims to experimentally study the convective drying of bananas in an oven with hot-air ... ...

    Abstract Fresh bananas are fruits with high moisture content after harvest and are submitted to a drying process to minimize waste and increase shelf life. This work aims to experimentally study the convective drying of bananas in an oven with hot-air recirculation, evaluating the geometric shape during moisture removal and product heating. Hand-peeled whole-banana samples, cut into longitudinal and transversal slices were dried at temperatures of 40 and 70 °C. Results of drying kinetics, heating and dimensional variations in terms of surface area and volume are presented and analyzed. It was found that cut bananas dry, heat up and change their dimensions faster than bananas in their natural form and that the area/volume relationships and the air temperature influence the drying kinetics, heating and volumetric variations of the fruit.
    Keywords agriculture ; air temperature ; fruits ; geometry ; heat ; ovens ; shelf life ; surface area ; thermogravimetry ; water content
    Language English
    Dates of publication 2022-0809
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    ZDB-ID 2651678-0
    ISSN 2077-0472
    ISSN 2077-0472
    DOI 10.3390/agriculture12081181
    Database NAL-Catalogue (AGRICOLA)

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  2. Article: Hydrodynamic and Performance Evaluation of a Porous Ceramic Membrane Module Used on the Water-Oil Separation Process: An Investigation by CFD.

    Oliveira Neto, Guilherme L / Oliveira, Nívea G N / Delgado, João M P Q / Nascimento, Lucas P C / Magalhães, Hortência L F / Oliveira, Paloma L de / Gomez, Ricardo S / Farias Neto, Severino R / Lima, Antonio G B

    Membranes

    2021  Volume 11, Issue 2

    Abstract: Wastewater from the oil industry can be considered a dangerous contaminant for the environment and needs to be treated before disposal or re-use. Currently, membrane separation is one of the most used technologies for the treatment of produced water. ... ...

    Abstract Wastewater from the oil industry can be considered a dangerous contaminant for the environment and needs to be treated before disposal or re-use. Currently, membrane separation is one of the most used technologies for the treatment of produced water. Therefore, the present work aims to study the process of separating oily water in a module equipped with a ceramic membrane, based on the Eulerian-Eulerian approach and the Shear-Stress Transport (SST k-ω) turbulence model, using the Ansys Fluent
    Language English
    Publishing date 2021-02-08
    Publishing country Switzerland
    Document type Journal Article
    ISSN 2077-0375
    ISSN 2077-0375
    DOI 10.3390/membranes11020121
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Heat and Mass Transfer, and Volume Variations in Banana Slices during Convective Hot Air Drying: An Experimental Analysis

    Farias, Raimundo P. / Gomez, Ricardo S. / Silva, Wilton P. / Silva, Leonardo P. L. / Oliveira Neto, Guilherme L. / Santos, Ivonete B. / Carmo, João E. F. / Nascimento, José J. S. / Lima, Antonio G. B.

    Agriculture (Basel). 2020 Sept. 23, v. 10, no. 10

    2020  

    Abstract: Bananas are some of the most consumed fruits throughout the world, providing metabolizable calories and vitamins for humans, along with many other benefits. However, this fruit tends to be easily degraded by microorganisms and other chemical agents ... ...

    Abstract Bananas are some of the most consumed fruits throughout the world, providing metabolizable calories and vitamins for humans, along with many other benefits. However, this fruit tends to be easily degraded by microorganisms and other chemical agents because of the high moisture content. Considering the importance, this work focuses on an experimental study regarding banana fruit drying. For such purpose, whole bananas were hand-peeled and sliced longitudinally and then dried by a hot air circulation oven with air temperatures of 40 °C, 50 °C, 60 °C and 70 °C. Measurements of mass, temperature, and dimensions of the sample were done during the drying process. Results of drying, heating, and shrinkage (volume and surface area) kinetics are presented and analyzed. The study revealed that the drying air temperature significantly affected moisture removal, heating, and dimensions’ variation rates, as well as quality of banana fruit. The drying carried out with higher temperature and lower relative humidity of the air gave rise to higher rates of drying, heating and variation of dimensions, and shorter drying time of the product.
    Keywords agriculture ; air ; air temperature ; bananas ; fruits ; heat ; mass transfer ; ovens ; relative humidity ; shrinkage ; surface area ; water content
    Language English
    Dates of publication 2020-0923
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    Note NAL-light
    ZDB-ID 2651678-0
    ISSN 2077-0472
    ISSN 2077-0472
    DOI 10.3390/agriculture10100423
    Database NAL-Catalogue (AGRICOLA)

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  4. Article: A New Design of Tubular Ceramic Membrane Module for Oily Water Treatment: Multiphase Flow Behavior and Performance Evaluation.

    Oliveira Neto, Guilherme L / Oliveira, Nívea G N / Delgado, João M P Q / Nascimento, Lucas P C / Gomez, Ricardo S / Cabral, Adriano S / Cavalcante, Daniel C M / Miranda, Vansostenes A M / Farias Neto, Severino R / Lima, Antonio G B

    Membranes

    2020  Volume 10, Issue 12

    Abstract: Petroleum has been extracted from oil reservoirs using different techniques. This activity is accompanied for a large amount of water and sometimes mixed with gas. This produced water has a high oil concentration and other toxic chemical compounds, thus, ...

    Abstract Petroleum has been extracted from oil reservoirs using different techniques. This activity is accompanied for a large amount of water and sometimes mixed with gas. This produced water has a high oil concentration and other toxic chemical compounds, thus, it must be treated to be reused or released to environment according to environmental protection regulations. Currently, ceramic membrane technology has been employed in the wastewater treatment, due to its high benefit-cost ratio. In this sense, this work aims to study the oil-water mixture separation process using a new configuration of tubular ceramic membrane module by computational fluid dynamic (ANSYS Fluent software). The proposed model is composed of mass and linear momentum conservation equations coupled to Darcy's law and SST k-ω turbulence model. Results of the volumetric fraction, pressure, and velocity distribution of the oil and water phases are presented and discussed. The results indicated that the proposed model and new device both have great potential to be used on the water/oil separation process and that the transmembrane pressure remains constant in the axial direction and decreases radially through the membranes, indicating an efficient system that favors the transport of clean water and oil retention.
    Language English
    Publishing date 2020-12-07
    Publishing country Switzerland
    Document type Journal Article
    ISSN 2077-0375
    ISSN 2077-0375
    DOI 10.3390/membranes10120403
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

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