THE IMPACT OF SPACER DESIGN ON ELECTRODIALYSIS PROCESS

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F28676092%3A_____%2F17%3AN0000043" target="_blank" >RIV/28676092:_____/17:N0000043 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

THE IMPACT OF SPACER DESIGN ON ELECTRODIALYSIS PROCESS

Original language description

Efficiency is very important factor for each technological process. Electrodialysis efficiency is influenced not only by ion-exchange membrane performance, but also by design of spacer, its type of the flow distributor, spacer material and the conditions of process. The membrane spacer influences the flow regime and so minimizes laminar flow, distributes the feed so it maximizes use of active membrane area and insures good tightness of the membrane stack. Due to different mechanical properties of different types of ion-exchange membranes, spacer must be designed according to them. The only way to find if the spacer suits the ion-exchange membrane is to perform different experiments and compare the results. In this work two types of membranes and four types of spacers are tested and results are compared to show, how much different spacers and ion-exchange membranes influence the electrodialysis process. The flow distributor influence pressure drop and internal leakage the most. Spacers with net flow distributors had the lowest volume of internal leakage, 50 ml.h-1 for spacer with net distributor vs. 126 ml.h-1 for spacer with narrow channels distributor. On the mass flux, net used in active area of spacer had the greatest impact. When PP net was used mass flux was the highest for both membranes. Mass flux for IM LT membranes was 0.301 kg.m-2.h-1 when spacer with PP net was used, on the contrary when spacer with PE net was used, mass flux was only 0.256 kg.m-2.h-1.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20402 - Chemical process engineering

Project

<a href="/en/project/LO1418" target="_blank" >LO1418: Progressive development of the Membrane Innovation Centre</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Workshop of Students’ Presentations 2017, Membranes and Membrane Processes

ISBN

978-80-906831-0-5

ISSN

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e-ISSN

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Number of pages

11

Pages from-to

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Publisher name

Czech Membrane Platform

Place of publication

Česká Lípa

Event location

Stráž pod Ralskem

Event date

Oct 18, 2017

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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