Influence of experimental conditions to obtain silver-modified zeolite-rich tuffs on the antimicrobial activity for Escherichia coli suspended in aqueous media

Aparicio-Vázquez, S.; Fall, Cheikh; Islas-Espinoza, Marina; Alcántara, David; Petranovskii, Vitalii; Olguín, M. T.

doi:10.1016/j.eti.2021.101707

Cited by 9 publications

(10 citation statements)

References 69 publications

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“…The samples were dried using a vacuum oven [54] and calcined using a furnace [55]. Several researchers executed additional treatments to maximize the performance of zeolites, such as contacting with M. tuberculata leaf extract and NaOH [6], then contacting with HCl [21], or contacting with NaCl [7]. The antibacterial test was applied by preparing a bacterial culture with an age of 24 hours, making a bacterial suspension with Mac Farland I standard solution, counting the population of bacterial suspension as a negative control, preparing a sample solution then adding 1 mL of bacterial suspension, then homogenizing by vortex incubation at room temperature for 30 minutes, pouring 20 mL agar plate count medium and homogenizing, then letting stand for 2 x 24 hours at 35 o C, counting the number of remaining bacteria [46].…”

Section: Methodsmentioning

confidence: 99%

“…Clinoptilolite is not toxic to humans. It can even be used as an adjuvant in medical treatment [7,24].…”

Section: Natural Zeolite and Synthetic Zeolitementioning

confidence: 99%

“…E. coli is the predominant bacteria in contaminated water. It is considered an indicator of drinking water's hygienic condition, suitability, and safety [7]. More than 3.4 million people, primarily children, die each year from consuming water contaminated with bacteria.…”

Section: Introductionmentioning

confidence: 99%

“…Component contamination can gradually interfere with the disinfection efficiency of the UV radiation process. Moreover, in the case of membranes, UV radiation is an expensive process [7]. The exchange process is an effective method [11,12].…”

Section: Introductionmentioning

confidence: 99%

“…Zeolites have a regular pore system and large surface area, high thermal properties, and chemical stability and are non-toxic [5,14,18,19]. Zeolite has the property of reversible ion exchangeability [7,17]. The crystal structure of zeolite has a negative charge and is interconnected so that it can absorb positively charged ions.…”

Section: Introductionmentioning

confidence: 99%

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A Review: Antibacterial Activity of Metal Impregnated Zeolite in Water Treatment Process

Sutianingsih

2022

J. Kartika Kimia

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Environmental and health problems related to water pollution by bacteria are a big challenge in the water treatment process. This pollution is caused by industrial development and increased population growth. Bacterial removal methods in water are continuously developed to find an efficient water treatment process. Zeolite has the potential to be an adsorbent used in the water treatment process. Zeolite has been widely used in adsorption and catalytic processes. Zeolite is a porous alumina silicate consisting of silicon, aluminium, and oxygen in its framework. Zeolite cations can be exchanged with monovalent or divalent ions. Zeolite does not have antibacterial activity, so it should combine with metal cations such as Ag, Cu, Zn, and Fe. Metal active that loaded into zeolite framework is a solution to improve the zeolite performance for bacteries removing in water. The impregnation method is the most widely used for the metal loading process into zeolite framework, because of its simple and economical process. This review will discuss natural and synthetic zeolites, types of metal, impregnation process, the antibacterial activity of metal impregnated zeolite, bacterial attack mechanism, and antibacterial application of metal impregnated zeolite in water.

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