Tubular ceramic membranes coated with ZnO and applied in the disinfection of water contaminated with Staphylococcus aureus. Issue 19 (1st October 2021)

• Record Type: Journal Article
• Authors: da Silva Biron, Dionisio; Santos, Venina dos; Bergmann, Carlos Pérez
• Is Part Of: Ceramics international. Volume 47:Issue 19(2021)
• Page Start: 27082
• Page End: 27090
• Publication Date: 2021-10-01
• Subjects: Ceramic membranes -- APTES -- ZnO -- Microfiltration -- Antimicrobial; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2021.06.121
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: In this study, commercial ceramic membranes of mullite and of alumina were coated with nanostructured ZnO using 3-aminopropyltriethoxysilane (APTES) as the connecting molecule between ceramic and ZnO. The characterization of ceramic membranes containing ZnO was performed by SEM, EDS and ICP-OES. The membranes without and with ZnO coating were applied in microfiltration tests to evaluate their antimicrobial capacity in the disinfection of distilled water contaminated with Staphylococcus aureus . In the microfiltration tests, ceramic membranes without the ZnO coating showed low efficiency in water disinfection, 35 and 45%, for mullite and alumina membranes, respectively. After the coating with nanostructured ZnO, both membranes showed disinfection efficiencies greater than 99%. The results obtained justify the application of ZnO as a promising coating on both mullite and alumina membranes for application in microfiltration aiming the disinfection of water contaminated with Staphylococcus aureus . Graphical abstract: Coating process of ceramic membranes with ZnO and its antimicrobial action. Image 1