TY - JOUR
T1 - Environmentally friendly solvent- and water-based coatings for mitigation of crystallization fouling
AU - Al-Janabi, Abdullah
AU - Malayeri, M. Reza
N1 - Publisher Copyright:
© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
PY - 2015/1/1
Y1 - 2015/1/1
N2 - The surface properties of solvent-based (SB) and water-based (WB) coatings and their impact on fouling during convective heat transfer of CaSO4 solutions were investigated. Experiments demonstrated that the SB coatings had generally better non-adhesive characteristics, especially at higher values of the electron donor component since the deposits could easily be washed away. For the SB coatings, a longer induction period compared to those of untreated surfaces was observed and a significant reduction of the fouling rate could be achieved. Further analysis of surfaces revealed that SB coatings enhanced the acid-base repulsive force and thus reduced the deposit/solid adhesion energy. For the WB coatings, the Liftshitz-van der Waals attractive force plays a decisive role in the adhesion process due to the higher apolar component of the surface energy.
AB - The surface properties of solvent-based (SB) and water-based (WB) coatings and their impact on fouling during convective heat transfer of CaSO4 solutions were investigated. Experiments demonstrated that the SB coatings had generally better non-adhesive characteristics, especially at higher values of the electron donor component since the deposits could easily be washed away. For the SB coatings, a longer induction period compared to those of untreated surfaces was observed and a significant reduction of the fouling rate could be achieved. Further analysis of surfaces revealed that SB coatings enhanced the acid-base repulsive force and thus reduced the deposit/solid adhesion energy. For the WB coatings, the Liftshitz-van der Waals attractive force plays a decisive role in the adhesion process due to the higher apolar component of the surface energy.
KW - Crystallization fouling
KW - Heat exchanger fouling
KW - Solvent-based coating
KW - Surface energy
KW - Water-based coating
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U2 - 10.1002/ceat.201400457
DO - 10.1002/ceat.201400457
M3 - Article
AN - SCOPUS:84919381987
SN - 0930-7516
VL - 38
SP - 147
EP - 154
JO - Chemical Engineering and Technology
JF - Chemical Engineering and Technology
IS - 1
ER -