Adhesion (Primary) of Microorganisms onto Surfaces

Boonaert, Christophe J. P.; Dufrêne, Yves F.; Rouxhet, Paul

doi:10.1002/0471263397.env154

Cited by 9 publications

(6 citation statements)

References 139 publications

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“…The adhesion of microorganisms to a substrate can be active (by flagella, fimbrias, adhesins, capsules, and surface charges) or passive (by gravity, diffusion, and fluid dynamics). In the absence of these mechanisms, the bacterial cells would be repelled by the surface when presenting electric charges of the same sign [38].…”

Section: Adhesion Of Microorganismsmentioning

confidence: 99%

“…In recent years, the advances made in the field of proteomics and genomics have allowed the identification of 800 proteins that modify their concentration throughout the five phases of the biofilm development and clarify the complex process of biofilm formation [42,43]. Binding forces in an EPS matrix: (i) hydrogen bonds, (ii) cation bonds, (iii) van der Waals forces and (iv) repulsion force [38].…”

Section: Adhesion Of Microorganismsmentioning

confidence: 99%

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Fouling in Heat Exchangers

García¹,

Trueba²

2020

Inverse Heat Conduction and Heat Exchangers

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A major problem in industries that use heat exchanger equipment cooled with water in their industrial processes is biofouling. In the design and operation of heat exchangers cooled with water, a coefficient of biological must be considered, which affects the efficiency of the equipment. For this reason, it is necessary to apply appropriate antifouling treatments to the design of each heat exchanger. In order to minimize the undesirable phenomenon of biofouling, various mitigation methods have been developed over the last 30 years, both online and offline, of a physical, chemical, or biological nature. Most of these methods are well contrasted and are applied in the regular operation of the facilities, although some methodology approaches are in the research and development phase. However, the application of most of these methods requires interrupting the production, periodically, in order to clean the biofouling, seriously damaging the performance and operation of the installation. The "online" methods to biofouling control are chemical (oxidizing, and non-oxidants), biological and physical treatments. Nowadays, other methodologies of biofouling mitigation that do not affect the environment are being investigated, although, until now, none have been found that are substitutes for chemical agents and that have the same or with higher efficiency.

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Section: Adhesion Of Microorganismsmentioning

confidence: 99%

Section: Adhesion Of Microorganismsmentioning

confidence: 99%

Fouling in Heat Exchangers

García¹,

Trueba²

2020

Inverse Heat Conduction and Heat Exchangers

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“…The initial step of biofouling of materials consists in the spontaneous adsorption of biomolecules present in the aqueous environment (Boonaert et al 2003;Schneider & Leis 2003). It is indeed recognized that bacteria adhere onto material surfaces through a conditioning film composed of proteins and polysaccharides (Compère et al 2001).…”

Section: Introductionmentioning

confidence: 99%

Adsorption of a PEO–PPO–PEO triblock copolymer on metal oxide surfaces with a view to reducing protein adsorption and further biofouling

et al. 2013

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Biomolecule adsorption is the first stage of biofouling. The aim of this work is to reduce protein adsorption on stainless steel and titanium surfaces by modifying them with a poly(ethylene oxide) (PEO)-poly(propylene oxide) (PPO)-PEO triblock copolymer.Anchoring of the central PPO block of the copolymer is known to be favored by hydrophobic interaction with the substrate. Therefore, the metal oxide surfaces were first modified by self-assembly of octadecylphosphonic acid (OPA). PEO-PPO-PEO preadsorbed on the hydrophobized titanium or stainless steel was shown to prevent bovine serum albumin (BSA), fibrinogen and cytochrome C adsorption, as was monitored by quartz crystal microbalance (QCM). Moreover, X-ray photoelectron spectroscopy (XPS) and time-of-flight secondary ion mass spectrometry (ToF-SIMS) were used to characterize stainless steel and titanium surfaces after competitive adsorption of PEO-PPO-PEO and BSA. The results show that BSA adsorption is well prevented on hydrophobized surfaces, in contrast to native metal oxide surfaces.

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“…Application of flow systems is frequently reported in microbial adhesion studies. Such flow systems are for instance the parallel plate flow cell (PPFC) (Bakker et al, 2003;Boonaert et al, 2002;Boulangé-Petermann et al, 2003Dufrêne et al, 1996;Sjollema, 1990) or the radial-flow cell (RFC) (Cozens-Roberts et al, 1990;Fowler and McKay, 1980;Fryer et al, 1985). The latter has been used recently to assess the removal of various soils from solid substrates under different wall shear stress ranges (Demilly et al, 2006;Jensen and Friis, 2004;Joscelyne and Trägardh, 1997;Klavenes et al, 2002;Perni et al, 2007).…”

Section: Introductionmentioning

confidence: 99%