Abstract The experimental qualification of the tritium extraction unit (TEU) from LiPb eutectic alloy (15.7 at. % Li), breeder material water-cooled lithium–lead breeding blanket concept, is one fundamental items for demonstration balance sustainability ITER and DEMO fusion reactors. Several technologies have been proposed as TEU, but selection reference technology can be carried out only after...

efforts to increase the mass transfer coefficient, enhance the contact area, and decrease the power input of contractors have given risen to the development of the pre-dispersed solvent extraction (pdse) contactor and the devise of the new dissolved nitrogen pdse (dnpdse) contactors. the studies conducted after the design of the new contactor to determine the working conditions for its suitable...

An apparatus and methodology were de®eloped to measure the oxygen and carbon ( ) dioxide permeance of hollow fiber membranes HFMs in a gas-liquid en®ironment. The gas-liquid permeance measurements were compared with measurements made in a gas-gas en®ironment to ®alidate the methodology and to determine whether the permeance of an HFM in a gas-liquid en®ironment differs inherently than in a gas-...

This study presents mass transfer modeling of solvent extraction by membrane contactors. The extraction system was a membrane contactor, an aqueous solution of ethanol and acetone as the feed and a near-critical phase of carbon dioxide as the solvent. Model was based on solving conservation equations for solutes in the membrane contactor. The equations of the model were solved by numerical meth...

Effect of fractional gas hold-up εG on volumetric mass transfer coefficient KLa were studied for two different type of airlift contactors conventional and modified. KLa was directly proportional to gas hold-up within bubbly flow regime (UG < 0.075 m/s ) in conventional one but reverse trend ( inversely proportional) was reported in modified airlift contactor. Mathematical relation between KLa a...

In a gas membrane, gas is transferred between a liquid and a gas through a microporous membrane. The main challenge is to achieve a high gas transfer while preventing wetting and clogging. With respect to the oxygenation of blood, haemocompatibility is also required. Here we coat macroporous meshes with a superamphiphobic-or liquid repellent-layer to meet this challenge. The superamphiphobic la...

A membrane-based gas absorption (MGA) process was evaluated for the removal of volatile organic compounds (VOCs) based on C6H6/N2 mixture. The absorption of C6H6 from a C6H6/N2 mixture was investigated using a hydrophobic polypropylene hollow fiber membrane contactor and the aqueous solution of N-formyl morpholine (NFM) as absorbent. The effects of various factors on the overall mass transfer c...

We demonstrate and explain a simple and efficient way to remove gas bubbles from liquid-filled microchannels, by integrating a hydrophobic porous membrane on top of the microchannel. A prototype chip is manufactured in hard, transparent polymer with the ability to completely filter gas plugs out of a segmented flow at rates up to 7.4 ll/s/mm of membrane area. The device involves a bubble genera...