Separation of Cobalt and Nickel from Sulfate Solutions

DOI

10.2991/iceep-16.2016.52How to use a DOI?

Keywords

cobalt sulfate; nickel sulfate; sodium hypochlorite; separation

Abstract

Separation of cobalt and nickel from sulfate solutions was studied, using the sodium hypochlorite solution as the oxidant of Co2+. The cobalt removal rate reached 98% while Ni2+ was hardly oxidized at 80 C, 1h, pH 2.3 and Co2+/ClO- molar ratio of 1:15. Solution pH and the amount of ClO- had more significant influences on oxidation of Co2+ and Ni2+. Increasing temperature could improve the filtration performance of the solid product. The Co2+ oxidation product was CoOOH. Adding the sodium hypochlorite solution in more than one times could inhibit the Ni2+ oxidation to NiOOH.

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  - Lifang Kuang
AU  - Junyue Tan
AU  - Kui Liu
PY  - 2016/11
DA  - 2016/11
TI  - Separation of Cobalt and Nickel from Sulfate Solutions
BT  - Proceedings of the 2016 5th International Conference on Energy and Environmental Protection (ICEEP 2016)
PB  - Atlantis Press
SP  - 302
EP  - 305
SN  - 2352-5401
UR  - https://doi.org/10.2991/iceep-16.2016.52
DO  - 10.2991/iceep-16.2016.52
ID  - Kuang2016/11
ER  -