Calcium phosphate fouling on TiN-coated stainless steel surfaces: Role of ions and particles

Rosmaninho, R.; Rocha, Fernando; Rizzo, Gerhard; Müller‐Steinhagen, Hans; Melo, L. F.

doi:10.1016/j.ces.2007.04.008

Cited by 37 publications

(20 citation statements)

References 20 publications

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“…These data confirm results previously published by the authors, although under slightly different experimental conditions (Rosmaninho et al, 2005) where, at higher temperatures, the aggregates in the bulk liquid were not only larger but also in higher numbers, which could be related to the higher mass of deposit formed. In fact, that work showed that the particles formed in the bulk liquid at 44 1C had a diameter of 0.1 mm while at 70 1C their size was in average 0.4 mm.…”

Section: Deposition From Smuf At Different Temperaturessupporting

confidence: 93%

“…Firstly, the formation of calcium phosphate deposits without the presence of protein in the SMUF at 44 and 70 1C was studied. At the lower temperature, the deposition of newly formed calcium phosphate aggregates occurred, since 44 1C was found to be the temperature at which aggregates started to be formed in the bulk liquid under the present pH conditions (Rosmaninho, Rizzo, Mu¨ller-Steinhagen, & Melo, 2005). At the higher temperature (70 1C), the deposition of larger calcium phosphate aggregates was simulated.…”

Section: Article In Pressmentioning

confidence: 98%

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Protein–calcium phosphate interactions in fouling of modified stainless-steel surfaces by simulated milk

Rosmaninho

Melo

2008

International Dairy Journal

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Section: Deposition From Smuf At Different Temperaturessupporting

confidence: 93%

Section: Article In Pressmentioning

confidence: 98%

Protein–calcium phosphate interactions in fouling of modified stainless-steel surfaces by simulated milk

Rosmaninho

Melo

2008

International Dairy Journal

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“…Because of the high concentration of salts with inverse solubility (e.g. CaSO 4 and BaSO 4 ) the formation of deposits on heat transfer surfaces is the prime hurdle for optimum operation of thermal desalination units. Fouling has thus been a major factor for the development of various desalination technologies.…”

Section: Energy Losses Due To Foulingmentioning

confidence: 99%

Application of nano-modified surfaces for fouling mitigation

Malayeri

Al-Janabi

Müller‐Steinhagen

2009

Int. J. Energy Res.

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SUMMARYEnergy lost due to fouling of heat exchangers accounts for at least 2% of the total world energy production per year. The overwhelming proportion of these losses is compensated by additional consumption of fossil energy carriers. Not surprisingly, this comes with an enormous energy price-tag as well as considerable green-house gas emissions, acidification of water resources and release of chemical fouling inhibitors. Any solution towards the mitigation of fouling will, therefore, provide significant economic and environmental benefits. In the present paper, the performance of innovative nano-modified surfaces is described when subjected to calcium sulphate scale deposition during convective heat transfer. Two types of non-structured and structured nano-modified surfaces are examined. The experimental results demonstrate that such coatings will significantly increase the induction time before fouling starts and also reduce the subsequent fouling rate, in comparison with untreated stainless steel surfaces. Considering these promising results and the potential application of nanotechnology to combat fouling, the paper continues by discussing the demands on thermal and mechanical stabilities that such coatings will have to satisfy.

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“…The titanium content was found to influence the ɣ-value, with the samples with the lowest quantity of titanium having the lower values of ɣ-. In addition, Rosmaninho et al [115] found an exponential growth curve associated between the particle adhesion coefficient and ɣ-values, with the lower ɣ-values having the lowest particle adhesion coefficient.…”

Section: Sputteringmentioning

confidence: 99%

“…The advantages of using sputtering coatings is the development of hard and very adhesive films [76]. TiN was used as a surface coating to investigate its effect at reducing adhesion of calcium phosphate before and after cleaning [115,116]. In the experiment, Rosmaninho et al [116] used sputtering to apply a coating on a stainless steel surface, with different proportions of Ti and N giving the surfaces a different electron donor component of surface free energy (ɣ-).…”

Section: Sputteringmentioning

confidence: 99%

Design of intelligent surfaces for energy intensive processing industry

2018

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Abstract.There are three different factors that can affect adhesion: the process fluid, the processing conditions and the surface of the processing equipment. Of these three factors, the surface properties of the processing equipment are the factor that offers the greatest opportunity for manipulation. The two key surface properties that have been identified to reduce adhesion are the surface energy and the surface topography. The surface energy of a material determines its degree of wettability and, a surface's affinity for water. In previous studies the surface energy of materials have been leveraged in order to create a surface with reduced levels of fouling through surface modification or the addition of polymer coatings with varying degrees of hydrophobicity. In addition, the topography of surfaces has been modified to reduce the level of particle adhesion. These modifications involve creating either a structured or random porous microstructure on the surface. Additional methods identified to reduce fouling include the application of liquid infused porous surfaces at low shear conditions and the use of non-contact heating through techniques such as microwave processing.

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Calcium phosphate fouling on TiN-coated stainless steel surfaces: Role of ions and particles

Cited by 37 publications

References 20 publications

Protein–calcium phosphate interactions in fouling of modified stainless-steel surfaces by simulated milk

Protein–calcium phosphate interactions in fouling of modified stainless-steel surfaces by simulated milk

Application of nano-modified surfaces for fouling mitigation

Design of intelligent surfaces for energy intensive processing industry

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