التفاصيل البيبلوغرافية
| العنوان: |
Development of nickel and silver ceramic filters supported on K10 montmorillonite clay for water disinfection. |
| Alternate Title: |
Desenvolvimento de filtros cerâmicos com níquel e prata suportados em argila montmorilonita K10 para desinfecção de água. (Portuguese) |
| المؤلفون: |
de Moraes, L. T., Paiva, E. M., Rodrigues, S. F., Rangel, J. H. G., Oliveira, M. M. |
| المصدر: |
Ceramica; Oct-Dec2020, Vol. 66 Issue 380, p474-482, 9p |
| مصطلحات موضوعية: |
WATER filters, CRYSTAL filters, WATER disinfection, NICKEL (Coin), MONTMORILLONITE, CLAY, BACTERICIDAL action |
| Abstract (English): |
This study aimed to obtain ceramic filters with bactericidal action for water disinfection. For this, aqueous suspensions of montmorillonite K10 clay were prepared at concentrations of 48%, 50%, and 52%. Later, these were impregnated into polymeric sponges in order to form the ceramic skeletons by using the replica technique. The ceramic filters were submerged in nickel resins doped with 0.25 and 0.50 mol% silver. These resins were obtained by the Pechini method and heat-treated at 600 and 700 °C for 2 h. Moreover, techniques such as X-ray diffraction, particle size analysis, scanning electron microscopy, energy dispersive spectroscopy, compressive strength, water absorption, and apparent porosity were used to characterize the filters, and their performance was analyzed by a bactericidal test. The bactericidal test results showed that the filters impregnated with the resin containing 0.50 mol% of silver promoted the total elimination of the Staphylococcus aureus and Escherichia coli bacteria. [ABSTRACT FROM AUTHOR] |
| Abstract (Portuguese): |
Este trabalho visou a obtenção de filtros cerâmicos com ação bactericida para desinfecção de água. Para isto, suspensões aquosas de argila montmorilonita K10 foram preparadas nas concentrações de 48%, 50% e 52% e impregnadas em esponjas poliméricas para formação dos esqueletos cerâmicos por meio do método de réplica. Os filtros cerâmicos foram submersos nas resinas de níquel dopadas com 0,25 e 0,50%mol de prata obtidas pelo método Pechini, e tratadas termicamente a 600 e 700 °C por 2 h. Os filtros foram caracterizados por difração de raios X, análise de tamanho de partícula, microscopia eletrônica de varredura, espectroscopia por energia dispersiva, resistência à compressão, absorção de água, porosidade aparente e teste bactericida. Os resultados do teste bactericida mostraram que os filtros impregnados com a resina contendo 0,50%mol de prata promoveu a eliminação total das bactérias Staphylococcus aureus e Escherichia coli. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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