Evaluation of the resistance of mortars coated with silver bearing zeolite to bacterial-induced corrosion

A novel and simple treatment for control of sulfide induced sewer concrete corrosion using free nitrous acid

“…For example, the chemicals for application of magnesium hydroxide mixtures or coatings of epoxy, zeolite and polymers are relatively more expensive. Additionally, these coating methods require the added cost of surface preparation (Haile et al, 2008;Rhee and Verdes, 2012) which is not required by the nitrite spray. Thirdly, the method would use an environmentally friendly chemical (i.e.…”

“…high pressure washing) (Nielsen et al, 2008), and the difficulty of preparing the concrete surface for coating (Matthews et al, 2014). In addition, the effectiveness of some of these methods have only been tested in the short-term (Nielsen et al, 2008) or the methods are tested in conditions that are much different from that in the sewer atmosphere (De Muynck et al, 2009;Haile et al, 2008. Therefore, the development of cost-effective and environmental friendly methods is still highly required.…”

Ag+- and Zn2+-exchange kinetics and antimicrobial properties of 11Å tobermorites

“…As previously mentioned, Ag + -and Zn 2+ -exchanged clays and zeolites have been incorporated into a range of materials which exploit their antimicrobial properties, [11][12][13][14][15][16][17][18][19][20][21][22][23] and in addition, these Ag + -substituted materials also find application in electro-and photocatalysis. 48,49 Hence, it is anticipated that Ag + -substituted 11 Å tobermorites may also be potential candidates for incorporation into electro-and photocatalytic cells and nanocapacitors.…”

“…9 The broad-spectrum antimicrobial properties of the silver (I) ion, Ag + , have been utilised since ancient times by the Mediterranean and Asiatic cultures and the historic use of silver foils in the surgical treatment of wounds and broken bones is documented. 10 Silver-exchanged zeolites and clays have been used as coatings and in composites to confer antimicrobial properties to dental filling materials, 11 Portland cement mortars, 12 food packaging, 13,14 ointments, 15 stainless steel, 16 paper, paints and plastic products. 17 The antibacterial properties of silver have also been exploited by its incorporation into ceramic and glass implant materials for prosthesis and tissue regeneration.…”

Low temperature, rapid solution growth of antifouling silver-zeolite nanocomposite clusters

“…They are becoming increasingly important alternative antimicrobial agents in the medical field due to the emergence of pathogenic microbes with resistance to conventional antibiotics [11]. Antimicrobial Ag NM have been studied as dental resins [12], artificial bone growth supports [13], textiles [14], hydrogels [15], biocompatible polymer films [16], implant/prosthetic materials [17], food packaging [18], household and hospital paint coatings [19,20], water treatment systems [21e23], and in sewerage systems [24].…”