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Hollow Fiber Membranes

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Hollow Fiber Membranes

Hollow Fiber Membranes Book
Author : Yingnan Feng,Tai-Shung Chung
Publisher : Elsevier
Release : 2021-03-15
ISBN : 9780128218761
Language : En, Es, Fr & De

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Book Description :

Hollow Fiber Membranes: Fabrication and Applications focuses on the fabrication and applications of hollow fiber membranes. The book amply discusses the fundamental theories and practical applications of hollow fiber membranes, covering membrane formation mechanisms, hollow fiber spinning techniques, and spinneret design and module fabrication. In addition, novel membrane processes and applications of hollow fiber membranes are introduced. Elaborates membrane formation mechanisms Illustrates novel hollow fiber fabrication techniques and processes Specifies practical spinneret design and module fabrication Reviews hollow fiber membranes spun from specialty polymers Discusses state-of-the-art hollow fiber membrane applications

Hollow Fiber Membrane Contactors

Hollow Fiber Membrane Contactors Book
Author : Anil K. Pabby,S. Ranil Wickramasinghe,Kamalesh K. Sirkar,Ana-Maria Sastre
Publisher : CRC Press
Release : 2020-11-24
ISBN : 0429677456
Language : En, Es, Fr & De

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Book Description :

This book on hollow fiber contractors presents an up-to-date compilation of the latest developments and milestones in this membrane technology. Hollow Fiber Membrane Contactors: Module Fabrication, Design and Operation, and Potential Applications provides a comprehensive discussion of hollow fiber membrane applications (including a few case studies) in biotechnology, chemical, food, and nuclear engineering. The chapters in this book have been classified using the following, based on different ways of contacting fluids with each other: Gas-liquid contacting; Liquid-liquid contacting; Supported liquid membrane; Supported gas membrane; Fluid-fluid contacting. Other features include: Discusses using non-dispersive solvent extraction, hollow fiber strip dispersion, hollow fiber supported liquid membranes and role of process intensification in integrated use of these processes Provides technical and economic perspectives with several case studies related to specific scenarios Demonstrates module fabrication, design, operation and maintenance of hollow fiber contactors for different applications and performance Presents discussion on newer concepts like membrane emulsification, membrane nanoprecipitation, membrane crystallization and membrane condenser Special focus on emerging areas such as the use of hollow fiber contactor in back end of nuclear fuel cycle, membrane distillation, dehumidification of air and gas absorption and stripping Discusses theoretical analysis including computational modeling of different hollow fiber membrane processes, and presents emphasis on newly developed area of hollow fiber membrane based analytical techniques Presents discussion on upcoming area dealing with hollow fiber contactors-based technology in fermentation and enzymatic transformation and in chiral separations This book is equally suited for newcomers to the field, as well as for engineers and scientists that have basic knowledge in this field but are interested in obtaining more information about specific future applications.

PSF Hollow Fiber Membrane Fabricated from PSF HBPE PEG400 DMAc Dope Solutions Via Reverse Thermally Induced Phase Separation RTIPS Process

PSF Hollow Fiber Membrane Fabricated from PSF   HBPE   PEG400   DMAc Dope Solutions Via Reverse Thermally Induced Phase Separation  RTIPS  Process Book
Author : N.A
Publisher :
Release : 2015
ISBN :
Language : En, Es, Fr & De

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Book Description :

Abstract: Hyperbranched polyesters (HBPEs) based on 2, 2-bis(methylol)propionic acid (bis-MPA) was used as an additive to prepare polysulfone (PSf) hollow fiber membranes while the PSf–HBPE–PEG400–DMAc dope solutions were low critical solution temperature (LCST) membrane-forming systems. When the temperature of the coagulation bath was lower than the cloud point, the membrane formation process was the NIPS process, and the finger-like structure could be found in the membranes. The hydrophilicity, porosity, pure water flux, mean effective pore size and breaking strength of these prepared membranes increased with increasing the HBPE content. On the other hand, when the temperature of the coagulation bath reached the cloud point, the membrane formation process was changed to the reverse thermally induced phase separation (RTIPS) process. In these membranes, the finger-like structure was replaced by the sponge-like structure, and the porosity, pure water flux, mean effective pore size and breaking strength of these prepared membranes increased with increasing the temperature of the coagulation bath. Highlights: The dope solutions with the addition of HBPEs were successfully prepared. The properties of these dope solutions were measured. Porous hollow fiber membranes were successfully prepared via RTIPS. Through the RTIPS process, these membranes exhibited unique properties. With the addition of HBPE, these membranes exhibited unique properties.

Purification of Surface Water Using Novel Hollow Fiber Membranes Prepared from Polyetherimide polyethersulfone Blends

Purification of Surface Water Using Novel Hollow Fiber Membranes Prepared from Polyetherimide polyethersulfone Blends Book
Author : N.A
Publisher :
Release : 2017
ISBN :
Language : En, Es, Fr & De

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Book Description :

Highlights: High performance Polyetherimide/Polyethersulfone blend hollow fiber membranes were fabricated for surface water treatment. Effect of operating parameters such as Transmembrane pressure, packing density was evaluated. A comprehensive CFD model is proposed for prediction of hydrodynamics within the membrane module. Abstract: Membrane modules comprising of hollow fibers have undergone widespread utilization for water purification as they occupy less space, involve low operating cost and generate minimum quantity of reject. In this work, hollow fiber membrane modules comprising of polyethersulfone/polyetherimide blends were prepared via phase inversion method and tested in a laboratory membrane unit for surface water reclamation. Membrane microstructure, pore morphology and pore diameter were studied by means of SEM and Liquid-liquid porosimetry. Performance parameters, especially water flux and rejection efficiency of BSA protein, were determined. Effect of trans-membrane pressure, extent of fiber packing and impurity rejection was investigated at 3 bar pressure, which revealed high turbidity rejection of 99.65%, considerable permeability of 152.5 L/m 2 h, 90.3% N2 removal and 95.3% phosphorus rejection for surface water feed. A mathematical correlation was derived for understanding hydrodynamics taking place within the hollow fibers based on velocity and composition profile. Regression analysis showed the simulation data to agree well with experimental observations indicating significance of CFD as a potential tool in designing commercial membrane systems.

Optimizing Design Parameters for Thin Film Composite Hollow Fiber Membranes and Modules for Osmotic Processes

Optimizing Design Parameters for Thin Film Composite Hollow Fiber Membranes and Modules for Osmotic Processes Book
Author : Jian Ren
Publisher :
Release : 2017
ISBN :
Language : En, Es, Fr & De

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Book Description :

Osmotic processes have been considered sustainable solutions for extracting clean water and concentrating impaired water by forward osmosis (FO) and harvesting the osmotic pressure gradient for power generation via pressure retarded osmosis (PRO). Thin film composite (TFC) membranes are considered a preferred platform for osmotic processes wherein the selective and support layers can be tailored independently for preferred chemistry and structure. Hollow fiber TFC membranes in particular have garnered interests because of their high packing density. In this dissertation study, high performance TFC membranes were designed for applications in osmotic processes. Departing from previous hollow fiber membrane developments that focused on utilizing novel materials and fabrication methods, this dissertation focused on elucidating the fundamental structure-property-performance relationships of TFC hollow fiber membranes for osmotic processes. The impact of support layer structure was studied using lab-made hollow fiber supports. The impact of support surface pore size was systematically investigated using commercial ultrafiltration (UF) platforms. The results demonstrate that TFC hollow fiber FO membranes with excellent performance can be made with intrinsically hydrophilic materials, and can be produced at both lab-scale and module-scale with relative ease using off-the-shelf UF membranes. Finally, to optimize design and operation parameters in the hollow fiber FO process at various scales, a computational fluid dynamics model was developed to elucidate the inextricable link between various parameters and to optimize the design parameters for TFC hollow fiber membranes and modules for osmotic processes.

Membranes and Membrane Technologies

Membranes and Membrane Technologies Book
Author : Stanislav Kolisnychenko
Publisher : Trans Tech Publications Ltd
Release : 2019-04-22
ISBN : 3035734224
Language : En, Es, Fr & De

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Book Description :

The topic collection “Membranes and Membrane Technologies” consists of papers published by Trans Tech Publications Inc. from 2012 up to 2017 and it covers a wide range of engineering solutions in the field of properties research, development, and production of various types of membranes and their use in the technologies for the treatment of the drink water and wastewater, gas separation, bioindustry, etc. We hope this collection will be useful and interesting to a broad audience of researchers and engineers.

HYDROXYAPATITE HOLLOW FIBER FOR OIL WATER SEPARATION

HYDROXYAPATITE HOLLOW FIBER FOR OIL WATER SEPARATION Book
Author : N.A
Publisher :
Release : 2018
ISBN :
Language : En, Es, Fr & De

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Book Description :

Massive oily water produced in oil and gas industry is a catastrophe to the oil and water sources on the earth. Ceramic membrane separation is a promising approach to obtain clean water and oil fuel from oily water to mitigate this catastrophe. In this research, a low cost and biocompatible material, hydroxyapatite (HAP), is innovatively explored as bioceramic membranes for oily water separation. HAP powder was firstly synthesized by chemical precipitation and solid-state exchange methods, respectively. The powder was then fabricated into membranes with various geometries such as circular pellet, dense tube, and porous hollow fiber by different methods. The preparation, property, and oil-water separation performance of HAP hollow fiber membranes were studied in details. The HAP content, particle size, the viscosity of HAP suspension and sintering temperature of HAP hollow fibers all influenced the pore size, structure and oil-water separation performance of resultant HAP membranes.