The Desorption of Heavy Metal by Modified Chinese Walnut Shell

DOI

10.2991/iccmcee-15.2015.238How to use a DOI?

Keywords

Desorption, Modified chinese walnut, Heavy metal.

Abstract

Modified chinese walnut shell is a kind of adsorbent, this study using the adsorption of Cu2+ , Cd2+, Hg +, Cr6+ metal ions modified chinese walnut shell, on the desorption studies. The acid treatment of modified Chinese walnut shell, heavy metal desorption rate is above 90%. Show that H+ play an important role in the process of desorption, is likely to be completed with hydroxyl ion exchange adsorption reaction. Regeneration after modification of pecan shell adsorbent particles found no apparent damage, this suggests that the adsorbent has certain mechanical strength. With the increase of ionic strength, WCWS adsorbent for the adsorption of Cu2+, Hg2+, Cr6+ rate increase; The changes of the ionic strength of the 120 min of Cu2+ and Cd2+, Cr6+ plus the influence of the adsorption rate is relatively.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - CHunguang Yu
AU  - DaYu Zheng
PY  - 2015/11
DA  - 2015/11
TI  - The Desorption of Heavy Metal by Modified Chinese Walnut Shell
BT  - Proceedings of the 2015 4th International Conference on Computer, Mechatronics, Control and Electronic Engineering
PB  - Atlantis Press
SP  - 1259
EP  - 1262
SN  - 2352-5401
UR  - https://doi.org/10.2991/iccmcee-15.2015.238
DO  - 10.2991/iccmcee-15.2015.238
ID  - Yu2015/11
ER  -