Reduced-order modelling of concentration polarization with varying permeation: Analysis of electro-osmosis in membranes

Chan, Foo Sheng; Tan, Chee Keong; Ratnayake, Pesila; Junaidi, Mohd Usman Mohd; Liang, Yanyan

doi:10.1016/j.desal.2020.114677

Cited by 5 publications

(1 citation statement)

References 51 publications

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“…Under normal circumstances, ultrafiltration and other membrane treatment units usually encounter the problem of concentration polarization when treating wastewater. The higher the water recovery rate is, the more obvious influence of Concentration polarization is [10]. The recovery rate of desulfurization wastewater without sand and activated carbon filtration is about 92%.…”

Section: Operation Comparisonmentioning

confidence: 99%

Comparative Study on Membrane Concentration of Desulfurization Wastewater by Traditional Pretreatment Process and Ceramic Membrane Process

Cao,

Pang,

Han

et al. 2023

Advances in Transdisciplinary Engineering

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According to the current zero-discharge requirements for wastewater in the power industry, based on the widely used membrane concentration technology, a pilot process for pretreatment of desulfurization wastewater is established at the Huaneng Yunhe Power Plant. The desulfurization wastewater from the triple-tank outlet is dealt with the ceramic membrane filtration or quartz sand filtration, activated carbon filtration, and tubular ultrafiltration respectively, the results prove that the ceramic membrane process can substitute the traditional quartz sand filtration, activated carbon filtration, and tubular ultrafiltration process, which not only can significantly reduce the construction scale and floor area, but also reduce the treatment costs per ton of water. At the same time, aiming to reuse desulfurization wastewater, a higher water recovery rate is obtained by the ceramic membrane process, and the anti-pollution performance of the ceramic membrane is better. Therefore, pretreating desulfurization wastewater through a ceramic membrane is a more reasonable pretreatment process.

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Section: Operation Comparisonmentioning

confidence: 99%

Comparative Study on Membrane Concentration of Desulfurization Wastewater by Traditional Pretreatment Process and Ceramic Membrane Process

Cao,

Pang,

Han

et al. 2023

Advances in Transdisciplinary Engineering

View full text Add to dashboard Cite

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Nonlinearly induced electro-osmotic flow reversal in charged nanotube: Counter-ions mobility in Stern layer

Wang

Liu

2022

International Journal of Heat and Mass Transfer

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Construction of a reduced-order model of an electro-osmotic micromixer and discovery of attractors for petal structure

et al. 2023

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The chaotic state of microfluidic devices such as electroosmotic micromixers has received extensive attention. Its unsteady flow and multi-physics mask low-dimensional structure and potential attractors. Based on the dynamic mode decomposition (DMD) and the sparse identification of nonlinear dynamics (SINDy), this study aims to construct a manifold equation with the minimum degree of freedom, reveal the mixing mechanism of micromixers and discover the evolution of chaotic states. The attenuation degree of freedom was introduced to force the modal coefficients to be pure oscillations. The six, four, and two-dimensional minimum reduced-order models (ROMs) were constructed under different mixing conditions. The nonlinear dynamics evolve on attractors resembling a six-petal structure based on the amplitude-phase method. The attractor periodicity and decay map the evolution of the periodic oscillation and limit cycle of the active modes and are related to the appearance of the low-energy dominant non-axisymmetric modes. These results emphasize the significance of ROM technology in revealing the low-dimensional structure and attractor of the electroosmotic micromixer.

show abstract

Reduced-order modelling of concentration polarization with varying permeation: Analysis of electro-osmosis in membranes

Cited by 5 publications

References 51 publications

Comparative Study on Membrane Concentration of Desulfurization Wastewater by Traditional Pretreatment Process and Ceramic Membrane Process

Comparative Study on Membrane Concentration of Desulfurization Wastewater by Traditional Pretreatment Process and Ceramic Membrane Process

Nonlinearly induced electro-osmotic flow reversal in charged nanotube: Counter-ions mobility in Stern layer

Construction of a reduced-order model of an electro-osmotic micromixer and discovery of attractors for petal structure

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