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- W3104471036 endingPage "118903" @default.
- W3104471036 startingPage "118903" @default.
- W3104471036 abstract "Understanding the development of microstructure of cake layer during filtration can help establish effective operating conditions and membrane cleaning cycles. In this work, dynamic behavior of cake layers formed during early stage of ultrafiltration (UF) of colloids was analyzed in terms of cake porosity, fractal structure and evolution of fouling mechanisms. Experimental data on membrane fouling by SiO 2 colloids under different conditions were recorded to study the effect of pH (1.0–8.9), salinity (0–3.5 %wt. NaCl) and nanoparticle concentration (30–1000 ppm). The results show time dependent behavior of cake porosity with a steady state value lower at lower pH and at higher salinity of the continuous phase. Multiple fouling mechanisms were identified to occur sequentially with cake filtration as the dominant mechanism. High fractal dimension (2.45–2.94) was obtained in all conditions tested. Fractal dimension of a growing cake is shown to undergo a sharp transition to a higher value, pointing to cake restructuring during filtration. • Microstructural characteristics of cake layer were analyzed in terms of porosity, fractal dimension and permeability. • Cake porosity is significantly affected by suspension pH and salinity. • High fractal dimension (D f approaches 3) was obtained for conditions tested. • Equation relating specific cake resistance to porosity, blocking constant and filtration conditions is derived." @default.
- W3104471036 created "2020-11-23" @default.
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- W3104471036 date "2021-02-01" @default.
- W3104471036 modified "2023-10-14" @default.
- W3104471036 title "Analysis of microstructural properties of ultrafiltration cake layer during its early stage formation and growth" @default.
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- W3104471036 doi "https://doi.org/10.1016/j.memsci.2020.118903" @default.
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