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Adsorption of arsenate, phosphate and humic acids onto acicular goethite nanoparticles recovered from acid mine drainage

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posted on 04.02.2020 by Rodrigo Peralta-Muniz-Moreira, Solange Vandresen, Danielle B. Luiz, Humberto J. José, Gianluca Li-Puma
Acicular goethite nanoparticles (AGNs), obtained from the active treatment of acid mine drainage (AMD) on an industrial scale, were evaluated with respect to their capacity to adsorb the contaminants arsenate, phosphate and humic acids (HAs) in aqueous solution. Kinetics and equilibrium constants that describe the adsorption process were investigated. The adsorption capacity decreased in the order: HAs (37mgCg−1)>As(V) (20mgAs(V) g−1)>phosphate ions (13mgPO43−g−1). The adsorption capacity of the AGNs produced from acid mine drainage to remove arsenate, phosphate or humic acids are similar to those found for other synthetic iron oxides produced under controlled conditions at the laboratory scale. This study demonstrates the valorization of the AGNs product derived from acid mine drainage slurry waste arising from the mining of coal as an effective adsorbent materials for water treatment.

Funding

Brazilian governmental agency the National Council for Technological and Scientific Development (CNPq, Brazil)

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Chemical Engineering

Published in

Journal of Environmental Chemical Engineering

Volume

5

Issue

1

Pages

652 - 659

Publisher

Elsevier BV

Version

AM (Accepted Manuscript)

Rights holder

© Elsevier Ltd.

Publisher statement

This paper was accepted for publication in the journal Journal of Environmental Chemical Engineering and the definitive published version is available at https://doi.org/10.1016/j.jece.2016.12.018.

Acceptance date

17/12/2016

Publication date

2016-12-28

Copyright date

2016

ISSN

2213-3437

Language

en

Depositor

Prof Gianluca Li Puma. Deposit date: 3 February 2020

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