Development and Validation of a Model for Mitigating Particulate Fouling in Ultrafiltration Using Water-Hammer

Krantz, William B.; Wicaksana, Filicia; Aslam, Mohamed; Wong, Anthony; Farid, Mohammed

doi:10.2139/ssrn.4179249

Cited by 1 publication

(2 citation statements)

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“…The independent process variables were the TMP, CFV, and pulsatile parameters (BP cycle). The range of the independent factors was determined based on the configuration of the experimental setup and initial single-variable experiments [6]. The pulsatile duration was constant at 0.8 s, the BP cycle varied from 60-120 s, the TMP range of 0.5 to 1.5 bar, and CFV from 0.5 to 1.0 m/s.…”

Section: Box-behnken Designmentioning

confidence: 99%

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High-Frequency Pulsatile Parameterization Study for the Titania Ceramic Membrane Fouling Mitigation in Oily Wastewater Systems Using the Box–Behnken Response Surface Methodology

2022

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In this comprehensive study, a seven-channel ultrafiltration (UF) titania membrane was used to investigate the impact of the pulsatile cleaning process on the crossflow filtration system. Seventeen experimental runs were performed for different operating conditions with a transmembrane pressure (TMP) varying from 0.5 to 1.5 bar, a crossflow velocity (CFV) ranging from 0.5 to 1 m/s, and pulsatile parameters within an interval varying from 60 to 120 s with a duration of 0.8 s, and collecting membrane permeate flux and volume data. The optimized operating conditions revealed that a TMP of 1.5 bar, a CFV of 0.71 m/s, and a pulsatile cycle of 85 s were the best operating conditions to reach the highest steady permeability flux and volume of 302 LMH and 8.11 L, respectively. The UF ceramic membrane under the optimized inputs allowed for an oil-rejection ability of 99%. The Box–Behnken design (BBD) model was used to analyze the effect of crossflow operating conditions on the permeate flux and volume. The analysis of variance (ANOVA) indicated that the quadratic regression models were highly significant. At a 95% confidence interval, the optimum TMP significantly enhanced the flux and permeate volume simultaneously. The results also demonstrated a positive interaction between the TMP and the pulsatile process, enhancing the permeate flux with a slight impact on the permeate volume. At the same time, the interaction between the CFV and pulsatile flow improved the permeability and increased the permeate volume.

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Section: Box-behnken Designmentioning

confidence: 99%

“…Critical permeation flux is the flux at which the oil droplets' convection towards the membrane surface and their back-diffusion forces to the bulk are equal. Nevertheless, operating the membrane under the subcritical flux generates a low permeate flow [6,7].…”

Section: Introductionmentioning

confidence: 99%