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Título: | Water microbial disinfection via supported nAg/Kaolin in a fixed-bed reactor configuration |
Autor: | Yıldız Ozer, Lütfiye; Yusuf, Ahmed; Uratani, Joao M.; Cabal, Belén CSIC ORCID ; Díaz, Luis A. CSIC ORCID; Torrecillas, Ramón CSIC ORCID CVN; Moya, J. S. CSIC; Rodríguez, Jorge; Palmisano, Giovanni | Palabras clave: | Water microbial disinfection Fixed-bed reactor Kaolinite Silver nanoparticle |
Fecha de publicación: | 2020 | Editor: | Elsevier | Citación: | Applied Clay Science 184: 105387 (2020) | Resumen: | In this paper we have investigated and demonstrated the antimicrobial capabilities of nano-silver-4 wt%-kaolin (nAg-4-Kn) composite supported on borosilicate glass beads (BGB). Tests have been conducted in a fixed bed reactor on effluent from the secondary clarifier of a conventional wastewater treatment plant (WWTP) in Abu Dhabi, United Arab Emirates (UAE). The prepared BGB with immobilized nAg-4-Kn (nAg-4-Kn/BGB) were characterized using the RAMAN spectroscopy, TEM equipped with EDX and Focus Ion Beam Scanning Electron Microscope (FIB-SEM) techniques. The rate of disinfection was assessed through Luria-Bertani (LB)-agar plate cell counting technique. The results showed complete disinfection after few hours, which was preserved even after several days in repeated runs. The nAg-4-Kn/BGB was reused, demonstrating that the immobilization of nAg-4-Kn was stably achieved, and the activity and integrity of the composites on the BGB were preserved. First order disinfection kinetic constants were estimated to be 2.76 cm h−1 and 2.56 cm h−1 in two consecutive runs. Analyses of the beads after the experiments showed minor losses of nAg from the kaolin matrix thereby corroborating reusability of these materials. | Versión del editor: | https://doi.org/10.1016/j.clay.2019.105387 | URI: | http://hdl.handle.net/10261/219265 | DOI: | 10.1016/j.clay.2019.105387 | ISSN: | 0169-1317 |
Aparece en las colecciones: | (CINN) Artículos |
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Water microbial disinfection.pdf | 1,44 MB | Adobe PDF | Visualizar/Abrir |
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