The Adsorption of Heavy Metal in Wastewater by Modified Chinese Walnut Shell

DOI

10.2991/meita-15.2015.85How to use a DOI?

Keywords

Adsorbent; Wastewater; Chinese Walnut Shell

Abstract

This research use the modified Chinese Walnut Shell (MCWS) as adsorbent, purification for the wastewater from mechanical and electrical factory.It examines some factor to the effect such as adsorption time, mass, pH on the adsorption etc. The experiment of actual wastewater research shows that the adsorption rate of Cr6+ increased quickly after first 30 min. After 90 minutes, the trend of adsorbttion rate of Cd2+,Cu2+,Zn2+ increase slowing, after 150 min to reach adsorption equilibrium. when MCWS adsorption dose for 3g/L, removal rate of Cu2+ in practical wastewater can reach 89.21%, the water quality after copper content meet the national second class pollutants maximum allowable emission concentration level 3 standards; Adsorption of Cd2+ removal rate reached 77.89%, after the cadmium content in the water quality meet the national first class pollutant maximum allowable emission concentration standards; Cr6+ removal rate can reach 93.64%, the cadmium content of maximum allowable emission concentration meet the national first class standards.So, the MCWS is a good adsorbent.

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  - 2015/08
DA  - 2015/08
TI  - The Adsorption of Heavy Metal in Wastewater by Modified Chinese Walnut Shell
BT  - Proceedings of the 2015 International Conference on Materials Engineering and Information Technology Applications
PB  - Atlantis Press
SP  - 470
EP  - 474
SN  - 2352-5401
UR  - https://doi.org/10.2991/meita-15.2015.85
DO  - 10.2991/meita-15.2015.85
ID  - Yu2015/08
ER  -