Search results for "Hollow-fiber membrane"

showing 2 items of 2 documents

Filtration process cost in submerged anaerobic membrane bioreactors (AnMBRs) for urban wastewater treatment

2015

[EN] The objective of this study was to evaluate the effect of the main factors affecting the cost of the filtration process in submerged anaerobic membrane bioreactors (AnMBRs) for urban wastewater (UWW) treatment. Experimental data for CAPEX/OPEX calculations was obtained in an AnMBR system featuring industrial-scale hollow-fiber (HF) membranes. Results showed that operating at J(20) slightly higher than the critical flux results in minimum CAPEX/OPEX. The minimum filtration process cost ranged from Euro0.03 to Euro0.12 per m(3), mainly depending on SGD(m) (from 0.05 to 0.3 m(3)m(-2)h(-1)) and MLSS (from 5 to 25 gL-1). The optimal SGD(m) resulted in approx. 0.1 m(3)m(-2)h(-1).

Industrial-scale hollow-fiber membranesINGENIERIA HIDRAULICAGeneral Chemical EngineeringFiltration and Separation02 engineering and technology010501 environmental sciences01 natural scienceslaw.invention020401 chemical engineeringlawBioreactorUrban wastewater (UWW)0204 chemical engineeringFiltrationTECNOLOGIA DEL MEDIO AMBIENTE0105 earth and related environmental sciencesChemistryProcess Chemistry and TechnologySubmerged anaerobic MBR (AnMBR)General ChemistryPulp and paper industryMembraneWastewaterProcess costingSewage treatmentBiochemical engineeringAnaerobic exerciseCAPEXOPEX
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Performance Comparison of Alternative Hollow-Fiber Modules for Hemodialysis by Means of a CFD-Based Model

2022

Commercial hemodialyzers are hollow-fiber cylindrical modules with dimensions and inlet–outlet configurations dictated mostly by practice. However, alternative configurations are possible, and one may ask how they would behave in terms of performance. In principle, it would be possible to depart from the standard counter-flow design, while still keeping high clearance values, thanks to the increase in the shell-side Sherwood number (Sh) due to the cross-flow. To elucidate these aspects, a previously developed computational model was used in which blood and dialysate are treated as flowing through two interpenetrating porous media. Measured Darcy permeabilities and mass transfer coefficients…

Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciSettore ING-IND/25 - Impianti ChimiciProcess Chemistry and TechnologyPorous mediaHollow-fiber membraneUltrafiltrationhemodialysis; hollow-fiber membrane; solute clearance; computational fluid dynamics; porous media; Darcy permeability; ultrafiltration; mass transferFiltration and SeparationComputational fluid dynamicsHemodialysisChemical Engineering (miscellaneous)Mass transferDarcy permeabilitySettore ING-IND/19 - Impianti NucleariSolute clearanceMembranes
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