ISO INTERNATIONAL STANDARD 21340 First edition 2017-11 Test methods for fibrous activated carbon Methodes d'essai pour les charbons actifs fibreux Reference number IS0 21340:2017(E) so @IS02017 mitted without license from IHS Not for Resale, 11/29/2017 17:37:27 MST IS0 21340:2017(E) COPYRIGHT PROTECTEDDOCUMENT IS0 2017, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISO copyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org @ IS0 2017 - All rights reserved No reprodu Not for Resale, 11/29/2017 17:37:27 MST IS0 21340:2017(E) Contents Page Foreword ..V Introduction. ...vi 1 Scope. 2 Normative references 3 Terms and definitions 4 Sampling method 5 Properties to be tested .3 5.1 General .3 5.2 Specific tests ..3 6 Test methods. .4 6.1 Specific surface area. .4 6.1.1 Principle. 6.1.2 Apparatus .4 6.1.3 Test procedure 6.1.4 Calculation of specific surface area .6 6.2 Pore volume 6.2.1 Principle 7 6.2.2 Apparatus and procedure 1 6.3 Physical properties of fibrous activated carbon 7 6.3.1 Fibre diameter .7 6.3.2 Tensile strength .9 6.4 Physical properties of fibrous activated carbon sheet .11 6.4.1 Principle. ..1 6.4.2 Mass per unit area .11 6.4.3 Tensile strength and elongation ..12 6.5 Drying loss .13 6.5.1 Principle ..13 6.5.2 Apparatus. ..13 6.5.3 Procedure. ..13 6.5.4 Calculation. 6.6 pH value .14 6.6.1 Principle .14 6.6.2 Reagents and materials ..14 6.6.3 Apparatus. 6.6.4 Procedure. .14 6.7 Total ash content. .14 6.7.1 Principle. .14 6.7.2 Apparatus.. ..14 6.7.3 Procedure. .15 6.7.4 Calculation. .15 6.8 Toluene adsorption performance .15 6.8.1 Breakthrough adsorption test .15 6.8.2 Equilibrium adsorption amount 19 6.9 Methylene blue adsorption performance 22 6.9.1 Breakthrough adsorption test. 22 6.9.2 Equilibrium adsorption amount. .25 6.10 Iodine adsorption performance. 29 6.10.1 Equilibriumadsorptionamount .29 6.10.2 Reagents. 29 6.10.3 Apparatus. 30 6.10.4 Procedure.. 31 6.10.5 Calculation. .31 tnemaonarightsrerved ii ded by IHS Markit un Not for Resale, 11/29/2017 17:37:27 MST