4 publications
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Comprehensive Review of Membrane Fouling Control MechanismsBy Keka Rana
Abstract: One of the biggest problems with membrane-based separation procedures is membrane fouling. As particles, organic matter, microbes, and other materials build up on the membrane’s surface or inside its pores, the effectiveness of membranes – such as those used in reverse osmosis, ultrafiltration, and microfiltration – declines over time. The effectiveness and longevity of the membrane are eventually lowered because of this fouling, which causes a drop in flux and …
Published in International Journal of Polymer Science and Engineering · Vol. 11, Issue 2, 2025 · pp. 1–9 Read article →
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Analysis of Optimal Clearance Volume Between Two Concentric Cylinders in a Couette Flow Membrane Module Using a Computational Fluid Dynamics ApproachBy Keka Rana
Abstract: Membrane-based separation has become an integral part of the separation industry due to its diverse applications across various fields. However, this progress is often hindered by two major challenges: fouling and concentration polarization. Many membrane modules have made significant efforts to overcome these obstacles, yet a satisfactory solution to mitigate these issues and facilitate membrane-based processes in the separation industries is still needed. These issues are successfully handled using Dynamic …
Published in International Journal of Environmental Chemistry · Vol. 11, Issue 1, 2025 · pp. 135–143 Read article →
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Hydrodynamic Study Through Computational FluidDynamics of Radial Flow Membrane ModuleBy Keka Rana, Debasish Sarkar
Abstract: Historically Crossflow Membrane modules came first in the membrane-based separation (MBS)process. Its high shear generation overcomes two non-idealities concentration polarization andsubsequent fouling. Primarily, high shear generation and large surface area create a positive domainfor large applications. Thereafter, feed flow rate-dependent shear generation creates a hindrance.This obstruction is overcome with Dynamic Shear Enhanced Membrane Filtration Pilot (DSEMFPs).Low surface area is a vital drawback of DSEMFPs. This radial flow membrane module with …
Published in International Journal of Polymer Science and Engineering · Vol. 10, Issue 1, 2024 · pp. 8–15 Read article →
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Performance Characterization of Couette FlowMembrane Module Through Computational FluidDynamicsBy Keka Rana, Debasish Sarkar
Abstract: Membrane-based separation has been in rigorous applications in health services since the last fewdecennia. Dynamic Shear Enhanced Membrane Filtration Pilots (DSEMFPs) is a promising membranemodule. The first reported DSEMFPs was a Couette flow type module in 1985. It was used for collectingplasma from donors. This module consists of two concentric cylinders. The outer one is fixed while theinner one is rotating, having a membrane on the outer surface of it. …
Published in International Journal of Composite Materials and Matrices · Vol. 10, Issue 1, 2024 · pp. 1–5 Read article →