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2018 | OriginalPaper | Chapter

Removal of Cd(II) from Aqueous Solutions Using Red Mud/Graphene Composite

Authors : Xuan Linh Ha, Ngan Hanh Hoang, Thi Trang Nhung Nguyen, Thi Thuy Nguyen, Thanh Hai Nguyen, Van Thanh Dang, Nhat Huy Nguyen

Published in: Proceedings of the 4th Congrès International de Géotechnique - Ouvrages -Structures

Publisher: Springer Singapore

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Abstract

In this study, we developed a simple and convenient one-step method for activation of graphite using high basic red mud slurry to produce a mixture of red mud/graphene (REEG) under mild reaction conditions. The wet red mud was mixed up with graphene by direct electrochemical exfoliation of graphite in its solution. The REEG obtained was characterized and applied for removal of Cadmium (Cd(II)) from aqueous solutions. The effects of pH, contact time, and initial concentrations on the removal of Cd(II) were investigated. A removal efficiency of 98.95% at pH 6 was obtained after 60 min of adsorption, via the dispersion of 0.1 g of REEG in Cd(II) stock solutions (50 mL, 1 ppm). The maximum adsorption capacity (q_max) was calculated to be 12.598 mg/g. Results showed that REEG is effective for removal of Cd(II) from aqueous environment, which could also act as an effective adsorbent for the removal of other heavy metals from polluted water.

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Title: Removal of Cd(II) from Aqueous Solutions Using Red Mud/Graphene Composite
Authors: Xuan Linh Ha
Ngan Hanh Hoang
Thi Trang Nhung Nguyen
Thi Thuy Nguyen
Thanh Hai Nguyen
Van Thanh Dang
Nhat Huy Nguyen
Publisher: Springer Singapore
Book: Proceedings of the 4th Congrès International de Géotechnique - Ouvrages -Structures
Print ISBN: 978-981-10-6712-9

Electronic ISBN: 978-981-10-6713-6

Copyright Year: 2018
DOI: https://doi.org/10.1007/978-981-10-6713-6_105

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