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2015 | OriginalPaper | Chapter

Removal of Cu (II) from Aqueous Solutions Using Colloidal Pyrite Calcined Under Inert Atmosphere

Authors : Yan Yang, Tianhu Chen, Ping Li, Haibo Liu, Yadan Shi, Xinmin Zhan

Published in: Proceedings of the 11th International Congress for Applied Mineralogy (ICAM)

Publisher: Springer International Publishing

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Abstract

A natural colloidal pyrite calcined in N₂ atmosphere was utilized to remove Cu (II) from aqueous solutions in the present work. Under the effect of calcination temperature, initial solution pH, reaction time, initial Cu(II) concentration, sorption temperature, foreign ions, and the dissolved oxygen (DO) on Cu(II) removal were investigated. The results showed that colloidal pyrite calcined at 500–550 °C (CCPy) has a most promising potential for Cu(II) removal. The increase of pH, initial Cu(II) concentration, and reaction time benefited the improvement of Cu(II) removal efficiency. The isothermal adsorption data of CCPy were well described by Langmuir isotherms and the thermodynamic parameters (ΔG < 0, ΔH > 0), indicating the endothermic nature of Cu(II) sorption on CCPy. The presence of most common ions in acid mine drainage and DO just had little influence on the Cu(II) uptake. The observation implied that CCPy is a low-cost, abundant material for Cu removal from Cu waters.

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Title: Removal of Cu (II) from Aqueous Solutions Using Colloidal Pyrite Calcined Under Inert Atmosphere
Authors: Yan Yang
Tianhu Chen
Ping Li
Haibo Liu
Yadan Shi
Xinmin Zhan
Publisher: Springer International Publishing
Book: Proceedings of the 11th International Congress for Applied Mineralogy (ICAM)
Print ISBN: 978-3-319-13947-0

Electronic ISBN: 978-3-319-13948-7

Copyright Year: 2015
DOI: https://doi.org/10.1007/978-3-319-13948-7_44