hollow fiber Articles
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Preparation of three-bore hollow fiber charged nanofiltration membrane for separation of organics and salts
Three-bore hollow fiber charged nanofiltration (NF) membrane was prepared by interfacial polymerization (IP). The results showed that the flux and rejection of NF membrane prepared in this study increased with the increasing in the operating pressure. The water flux decreased and rejection for obvious dyes increased as the solute concentration increased. The separation factor for mixture of ...
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"Are you looking to manufacture hollow fiber membranes?" Here are three arguments to go for PHILOS
If you are a researcher or a practitioner working in the field of membrane development and are looking for a company that can serve you with the best membrane research and development equipment then PHILOS is the right place to contact. Recognizing the user’s mind of research for convenience, reproducibility, reliability, and accuracy, PHILOS offers the most precise, user-friendly, and ...
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A controlled wet-spinning and dip-coating process for preparation of high-permeable TiO2 hollow fiber membranes
In order to improve the permeate flux of photocatalytic membranes, we present an approach for coupling TiO2 with ceramic hollow fiber membranes. The ceramic hollow fiber membranes with high permeate flux were fabricated by a controlled wet-spinning process using polyethersulfone (PESf) and ceramic powder as precursors and 1-methyl-2-pyrrolidinone as solvent, and the subsequent TiO2 coating ...
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TB 59: Optimized deaeration system for Paulaner Brewery
The Centec DGS System is a modular, water deaeration process that uses hydrophobic Hollow Fiber Membrane to remove dissolved gasses from liquids in the beverage industry. This technical brief covers the unit’s design, operation and resulting reduction of energy consumption costs. Gas transfer starts with the basic principle that the concentration of dissolved gasses in water is proportional to ...
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Difference between hollow fiber and flat sheet membrane
Hollow fiber and flat sheet membranes are two commonly used configurations in membrane filtration processes. They differ in their physical structure, mode of operation, and application. Here are the key differences between hollow fiber and flat sheet membranes: 1. Physical Structure: Hollow Fiber Membranes: As the name suggests, hollow fiber membranes consist of small, cylindrical fibers with ...
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Project - PHILOSEP MF/UF Membrane System
The PHILOSEP MF / UF system is a package system that includes hollow fiber membrane module, pretreatment filter, pump and panel of MF ~ UF area directly produced by Philos ...
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Dual layer hollow fiber PVDF ultra-filtration membranes containing Ag nano-particle loaded zeolite with longer term anti-bacterial capacity in salt water
Dual layer polyvinylidene fluoride (PVDF), antibacterial, hollow fiber, ultra-filtration composite membranes with antibacterial particles (silver (Ag) nano-particles loaded zeolite (Z-Ag)) in the outer layer were prepared with high water flux and desired pore sizes. The amounts of Ag+ released from the composite membranes, freshly made and stored in water and salt solution, were measured. The ...
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Effects of various chemical cleaning conditions for pressured MF process
A pilot-scale pressured hollow-fiber microfiltration (MF) process as pretreatment for the reverse osmosis process was studied and operated under various conditions to assess the relative influence of backwashing, chemical enhanced backwashing (CEB), and bag filter application. The pilot plant process consisted of backwashing but without the CEB or the bag filter as the first step of the ...
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Tech Tips: Membrane Preconditioning
What is membrane preconditioning and why is it recommended to precondition new flat sheet or spiral woundmembranes prior to use? Membrane preconditioning is a filtration step using deionized water as feed solution and is typically performed at a pressure equal to or higher than the anticipated testing pressure. During this process membrane pores are wetted and the membrane structure may go ...
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Hollow Fiber Nanofiltration: Competitive technology for waste water reuse
Hollow Fiber Nanofiltration is a very competitive technology for waste water reuse in The Netherlands, is the conclusion in study by ‘Energy and Resources Factory’. The specific case study concludes that treatment costs of the configuration with Hollow Fiber Nanofiltration are comparable with the lowest drinking water tariffs in the Netherlands. A collaborative network organization ...
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Fowler, GA Municipal - Case Study
Retrofit ADF: 2 MGD (7,571 m3/d) PF: 4.5 MGD (17,034 m3/d) Existing Technology: Hollow Fiber Plant had issues with fouling and processing capacity Pre-selected against GE Water & Process Technologies, Koch Membrane Systems, Microdyn Nadir GmbH, Evoqua Won based on: Lower capex-opex Increased plant capacity ...
By FibraCast
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Aquaporin Hollow Fiber FO Membrane Modules (AQPHFFO2)
Aquaporin hollow fiber membrane modules for forward osmosis studies are now available from Sterlitech. AQP HFFO2 is a cross flow membrane module containing Aquaporin Inside hollow fiber membranes. With an Aquaporin Inside coating on the interior surface of the hollow fibers (lumen side), the feed solution is circulated in the lumen and the draw solution is circulated in the shell. The ...
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Development of polyethersulfone and polyacrylonitrile hollow fiber membranes for clarification of surface water and fungal enzyme broth
Hollow fiber membranes are of great commercial interest with several applications at the forefront of research to carryout bioseparations, drinking water purification, wastewater treatment besides liquid phase separations and gaseous separations. An experimental study was carried out to synthesize hollow fiber membranes from polyethersulfone (PES) and polyacrylonitrile (PAN) polymers to ...
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Extraction behavior of Cr(VI) and coexistence with interfering ions by trialkylamine
Solvent extraction of chromium(VI) with trialkylamine (N235) using kerosene/n-heptane as the diluent was investigated. The basic conditions for Cr(VI) extraction have been explored, and the influence of coexisting contaminants on extraction has been evaluated. The results indicated that the separation of Cr(VI) could be realized with N235, and the recovery rate could be increased by adding ...
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The role of innovative technologies in achieving energy-neutral wastewater treatment
A new flowsheet is proposed to achieve energy-neutral wastewater treatment (even better, electricity-neutral) while removing nitrogen using the proven nitrification-denitrification metabolic pathway. It is compatible with solid-liquid separation by conventional clarification or membrane filtration. The new flowsheet is based on a hybrid membrane-aerated biofilm reactor process which uses ...
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Numerical and experimental investigation for cleaning process of submerged outside-in hollow fiber membrane
Membrane fouling has limited extensive applications for hollow fiber membranes in water treatment. Backwashing and air scouring can effectively solve this problem in the submerged outside-in hollow fiber membrane system. In this study, variation of the fouling layer on the membrane surface during backwashing and the impact of shear stress caused by air scouring on fouling removal were ...
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Tensile deformation of polytetrafluoroethylene hollow fiber membranes used for water purification
The tensile deformation behavior of polytetrafluoroethylene (PTFE) hollow fiber membranes is studied. PTFE membranes at present have sub-micron pores with an open cell structure, which plays a critical role in water purification. One of the main challenges in water purification is that the pore structure becomes covered with biofouling, leading to blocked pores. To maintain the capacity for ...
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Ozone mass transfer behaviors on physical and chemical absorption for hollow fiber membrane contactors
To understand the mass transfer behaviors in hollow fiber membrane contactors, ozone fluxes affected by various conditions and membranes were investigated. For physical absorption, mass transfer rate increased with liquid velocity and the ozone concentration in the gas. Gas flow rate was little affected when the velocity was larger than the critical value, which was 6.1 × 10−3m/s in this ...
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Exploring the future of membranes with QUA
The modern history of water treatment can be traced through membranes. As our water expertise has grown over the last few decades, membranes have undergone a dramatic evolution, from straightforward filtration devices to complex systems that utilize nanotechnology. To get a handle on the latest membranes, Water Online spoke with Fred Wiesler from QUA. WaterOnline asked him about how membranes ...
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Bench-scale study of ultrafiltration membranes for evaluating membrane performance in surface water treatment
Currently, there is no standard bench-scale dead-end ultrafiltration (UF) testing system. The aim of the present study was to design and build a bench-scale hollow fiber UF system to assess the impact of operational parameters on membrane performance and fouling. A bench-scale hollow fiber UF system was built to operate at a constant flux (±2% of the set-point flux) and included automated ...
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