The characteristics of Zn in highly alkaline wastewater by CO2 aerated

DOI

10.2991/icmmct-16.2016.144How to use a DOI?

Keywords

Co-precipitation, highly alkaline wastewater, CO2, PHREEQC, adsorption.

Abstract

In the process of CO2 aerated, the variation of pH value, the characteristics of Carbonate precipitation and hydroxide precipitate by Zn, the adsorption and co-precipitation characteristics with the hydrated oxides of iron and aluminum and calcite have been researched. After CO2 was aerated to the high alkaline wastewater, the content of Zn after filtering was measured by Inductively Coupled Plasma (ICP), and then analyzed the precipitate by X-ray powder diffraction (XRD). The co-precipitation characteristics of Zn in highly alkaline waste by CO2 aerated was simulated by PHREEQC. The results showed that CO2 neutralized the high alkaline waste effectively, and the content of Zn was significantly decreased. The outcome showed that the sediment mainly consisted of CaCO3 and Zn. With CO2 continuing aerating, co-precipitation with CaCO3 created. Iron and aluminum hydroxide can adsorbent Zn, but the phenomenon is not obvious because colloid contains less.

Copyright

© 2016, 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  - Fengling Hao
AU  - Hehua Gao
AU  - Lei Wang
PY  - 2016/03
DA  - 2016/03
TI  - The characteristics of Zn in highly alkaline wastewater by CO2 aerated
BT  - Proceedings of the 2016 4th International Conference on Machinery, Materials and Computing Technology
PB  - Atlantis Press
SP  - 743
EP  - 746
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmmct-16.2016.144
DO  - 10.2991/icmmct-16.2016.144
ID  - Hao2016/03
ER  -