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Keka Rana

Bio: Keka Rana is an academic researcher from Haldia Institute of Technology. The author has contributed to research in topics: Membrane fouling & Turbulence. The author has an hindex of 1, co-authored 2 publications receiving 2 citations.

Papers
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Journal ArticleDOI
TL;DR: In this paper, the authors presented the design, performance characterization and primary CFD modeling of a DSE module with rapid on-line membrane washing facility along with high permeate production rate even in treatment of extremely fouling feed solution.

6 citations

Journal ArticleDOI
TL;DR: In this article , the effects of simple wire-type turbulence promoters on a specific class of DSE membrane modules, the spinning basket filtration units, were investigated, and the results indicated that the application of turbulence promoters in DSE modules to maximally increase the protein recovery from wastewater even at concentrations where the standard cross-flow systems are apprehended to be non-functional.
Abstract: The expected growth of membrane technology in protein recovery from wastewater is largely impeded by operational non-idealities like concentration polarization and membrane fouling. Two independent concepts, namely, the Dynamic Shear Enhanced (DSE) filtration and turbulence promoters were introduced decades earlier to remediate the problems. However, no systematic effort was undertaken to explore the synergy of the two process intensification schemes. In this study, we have investigated the effects of simple wire-type turbulence promoter on a specific class of DSE membrane modules, the spinning basket filtration units. The maximum flux improvement with synthetic wastewater (i.e., Bovine Serum Albumin (BSA)-water solution) was 445%, whereas for the real dairy effluent, the respective enhancement levelled off at 204%. The lower level of flux enhancement for real wastewater may be attributed to the severe fouling caused by the casein micelle. The increase of power consumption in all promoter-fitted configurations was limited to 9% only. Thus, turbulence promoter-integrated spinning basket group of membrane modules are confirmed to be much superior relative to other devices in protein recovery from wastewater. Our results are also supported by corroborating computational fluid dynamic (CFD) simulations of elevated shear and high turbulent kinetic energy dissipation rates for all promoter-fitted configurations. The present outcomes clearly recommend the application of turbulence promoters in DSE modules to maximally increase the protein recovery from wastewater even at concentrations where the standard cross-flow systems are apprehended to be non-functional.

3 citations

Journal ArticleDOI
TL;DR: In this article, the authors presented the modeling, simulation, and characterization studies of a dynamic shear-enhanced (DSE) filtration system with an inbuilt cleaning facility.
Abstract: Membrane-based low-cost recovery of nutritional and therapeutic proteins from wastewater is regarded as a leap towards sustainability. However, membranes are heavily fouled by proteins, and thus, frequent chemical or hydrodynamic cleaning is needed even in the advanced dynamic shear-enhanced (DSE) filtration devices. This article presents the modeling, simulation, and characterization studies of a DSE system, namely the ‘Spinning Basket membrane’ (SBM) module with an inbuilt cleaning facility. The device has been established to be specifically suitable for the recovery of proteins from synthetic wastewater. It can perpetually regenerate the flux with its simple and, moreover, online cleaning facility. A two-parameter transient model, purely based on an analytical approach, has been developed to simulate the device. Moderately low deviation (±12 %) of the simulated flux from the corresponding experimental data obtained from ultrafiltration of synthetic wastewater unambiguously validates the proposed model. The present modeling strategy demonstrates how a DSE filtration system with highly complex modes of mass and momentum transfer could be easily simulated.

1 citations


Cited by
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Journal ArticleDOI
TL;DR: The overarching aims propose to report the main criteria that will help engineers select the DF module or identify the scientific and/or technological bottlenecks about hydrodynamics or applications.

18 citations

Journal ArticleDOI
TL;DR: In this paper , pressure-driven and electrically-driven membrane processes were reviewed in order to separate anionic and cationic BPs and further development in efficient and economical technologies for the separation and purification of BPs is urgent to improve human health.

3 citations

Journal ArticleDOI
TL;DR: In this article , the effects of simple wire-type turbulence promoters on a specific class of DSE membrane modules, the spinning basket filtration units, were investigated, and the results indicated that the application of turbulence promoters in DSE modules to maximally increase the protein recovery from wastewater even at concentrations where the standard cross-flow systems are apprehended to be non-functional.
Abstract: The expected growth of membrane technology in protein recovery from wastewater is largely impeded by operational non-idealities like concentration polarization and membrane fouling. Two independent concepts, namely, the Dynamic Shear Enhanced (DSE) filtration and turbulence promoters were introduced decades earlier to remediate the problems. However, no systematic effort was undertaken to explore the synergy of the two process intensification schemes. In this study, we have investigated the effects of simple wire-type turbulence promoter on a specific class of DSE membrane modules, the spinning basket filtration units. The maximum flux improvement with synthetic wastewater (i.e., Bovine Serum Albumin (BSA)-water solution) was 445%, whereas for the real dairy effluent, the respective enhancement levelled off at 204%. The lower level of flux enhancement for real wastewater may be attributed to the severe fouling caused by the casein micelle. The increase of power consumption in all promoter-fitted configurations was limited to 9% only. Thus, turbulence promoter-integrated spinning basket group of membrane modules are confirmed to be much superior relative to other devices in protein recovery from wastewater. Our results are also supported by corroborating computational fluid dynamic (CFD) simulations of elevated shear and high turbulent kinetic energy dissipation rates for all promoter-fitted configurations. The present outcomes clearly recommend the application of turbulence promoters in DSE modules to maximally increase the protein recovery from wastewater even at concentrations where the standard cross-flow systems are apprehended to be non-functional.

3 citations

Journal ArticleDOI
TL;DR: In this article, the authors presented the modeling, simulation, and characterization studies of a dynamic shear-enhanced (DSE) filtration system with an inbuilt cleaning facility.
Abstract: Membrane-based low-cost recovery of nutritional and therapeutic proteins from wastewater is regarded as a leap towards sustainability. However, membranes are heavily fouled by proteins, and thus, frequent chemical or hydrodynamic cleaning is needed even in the advanced dynamic shear-enhanced (DSE) filtration devices. This article presents the modeling, simulation, and characterization studies of a DSE system, namely the ‘Spinning Basket membrane’ (SBM) module with an inbuilt cleaning facility. The device has been established to be specifically suitable for the recovery of proteins from synthetic wastewater. It can perpetually regenerate the flux with its simple and, moreover, online cleaning facility. A two-parameter transient model, purely based on an analytical approach, has been developed to simulate the device. Moderately low deviation (±12 %) of the simulated flux from the corresponding experimental data obtained from ultrafiltration of synthetic wastewater unambiguously validates the proposed model. The present modeling strategy demonstrates how a DSE filtration system with highly complex modes of mass and momentum transfer could be easily simulated.

1 citations

Journal ArticleDOI
Mengyao Xiao, Z. Peng, Ziyang Li, Xianhui Li, Xing Du 
TL;DR: In this article , the biofouling layer generated on NF in a parallel plate rheometer operated in oscillation and stable shear mode, along with shear stress calculation using computational fluid dynamic simulations on the membrane surface.