Interaction of arsenic with co-precipitated Fe(II,III) (hydr)oxides

C.M. van Genuchten; T. Behrends; P. Kraal; S.L.S. Stipp; K. Dideriksen

doi:10.1201/9781351046633-155

Interaction of arsenic with co-precipitated Fe(II,III) (hydr)oxides

C.M. van Genuchten
, T. Behrends
, P. Kraal
, S.L.S. Stipp
, K. Dideriksen

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › peer-review

Abstract

Iron electrocoagulation (EC) is a low-cost arsenic (As) treatment method that is able to produce Fe(II,III) phases that bind As effectively, such as green rust (GR) and magnetite (Mag). We compared the As removal performance of coprecipitated GR, Mag and lepidocrocite (Lp) produced by Fe(0) EC. The As(III) removal efficiency for these phases was >60%, increasing in order of GR < Mag ≤ Lp, and all three Fe phases removed >95% of the initial As(V) (0.5 to 11 mg L⁻¹). Spectroscopic data of EC samples revealed that As was able to substitute for tetrahedral Fe sites in Mag, associating with multiple Fe atoms, while As formed binuclear corner sharing geometries on GR and Lp surfaces. The formation of multinuclear As complexes during Mag production by Fe(0) EC can explain the low fraction of As remobilized from the solids during extractions with 2.5 mM PO³⁻ 4 or 0.01 M NaOH. Taken together, our results show that Mag is the optimum phase for As removal in Fe(0) EC field treatment.

Original language	English
Title of host publication	Environmental Arsenic in a Changing World
Subtitle of host publication	Proceedings of the 7th International Congress and Exhibition on Arsenic in the Environment (AS 2018)
Editors	Yongguan Zhu, Huaming Guo, Prosun Bhattacharya, Arslan Ahmad, Jochen Bundschuh, Ravi Naidu
Publisher	CRC Press
Pages	401-402
Number of pages	2
ISBN (Print)	978-1-138-48609-6
DOIs	https://doi.org/10.1201/9781351046633-155
Publication status	Published - 2018
Externally published	Yes
Event	7th International Congress and Exhibition Arsenic in the Environment, 2018 - Beijing, China Duration: 1 Jul 2018 → 6 Jul 2018 Conference number: 7

Conference

Conference	7th International Congress and Exhibition Arsenic in the Environment, 2018
Abbreviated title	AS 2018
Country/Territory	China
City	Beijing
Period	1/07/18 → 6/07/18

Programme Area

Programme Area 2: Water Resources

Access to Document

10.1201/9781351046633-155Licence: CC BY-NC-ND

Cite this

van Genuchten, C. M., Behrends, T., Kraal, P., Stipp, S. L. S., & Dideriksen, K. (2018). Interaction of arsenic with co-precipitated Fe(II,III) (hydr)oxides. In Y. Zhu, H. Guo, P. Bhattacharya, A. Ahmad, J. Bundschuh, & R. Naidu (Eds.), Environmental Arsenic in a Changing World: Proceedings of the 7th International Congress and Exhibition on Arsenic in the Environment (AS 2018) (pp. 401-402). CRC Press. https://doi.org/10.1201/9781351046633-155

van Genuchten, C.M. ; Behrends, T. ; Kraal, P. et al. / Interaction of arsenic with co-precipitated Fe(II,III) (hydr)oxides. Environmental Arsenic in a Changing World: Proceedings of the 7th International Congress and Exhibition on Arsenic in the Environment (AS 2018). editor / Yongguan Zhu ; Huaming Guo ; Prosun Bhattacharya ; Arslan Ahmad ; Jochen Bundschuh ; Ravi Naidu. CRC Press, 2018. pp. 401-402

@inproceedings{aed21db18ea84d378cc096b6b3c757f1,

title = "Interaction of arsenic with co-precipitated Fe(II,III) (hydr)oxides",

abstract = "Iron electrocoagulation (EC) is a low-cost arsenic (As) treatment method that is able to produce Fe(II,III) phases that bind As effectively, such as green rust (GR) and magnetite (Mag). We compared the As removal performance of coprecipitated GR, Mag and lepidocrocite (Lp) produced by Fe(0) EC. The As(III) removal efficiency for these phases was >60\%, increasing in order of GR < Mag ≤ Lp, and all three Fe phases removed >95\% of the initial As(V) (0.5 to 11 mg L−1). Spectroscopic data of EC samples revealed that As was able to substitute for tetrahedral Fe sites in Mag, associating with multiple Fe atoms, while As formed binuclear corner sharing geometries on GR and Lp surfaces. The formation of multinuclear As complexes during Mag production by Fe(0) EC can explain the low fraction of As remobilized from the solids during extractions with 2.5 mM PO3− 4 or 0.01 M NaOH. Taken together, our results show that Mag is the optimum phase for As removal in Fe(0) EC field treatment.",

author = "\{van Genuchten\}, C.M. and T. Behrends and P. Kraal and S.L.S. Stipp and K. Dideriksen",

note = "Funding Information: We acknowledge Dipanjan Banerjee (ESRF) and Ryan Davis (SSRL) for assistance during XAS data collection. CMvG acknowledges funding support by a NWO Veni grant (Project No. 14400). Funding Information: The authors would like to thank CAPES, CNPq, FAPEMIG and INCT Acqua. Publisher Copyright: {\textcopyright} 2018, CRC Press/Balkema. All rights reserved.; 7th International Congress and Exhibition Arsenic in the Environment, 2018, AS 2018 ; Conference date: 01-07-2018 Through 06-07-2018",

year = "2018",

doi = "10.1201/9781351046633-155",

language = "English",

isbn = "978-1-138-48609-6",

pages = "401--402",

editor = "Yongguan Zhu and Huaming Guo and Prosun Bhattacharya and Arslan Ahmad and Jochen Bundschuh and Ravi Naidu",

booktitle = "Environmental Arsenic in a Changing World",

publisher = "CRC Press",

}

van Genuchten, CM, Behrends, T, Kraal, P, Stipp, SLS & Dideriksen, K 2018, Interaction of arsenic with co-precipitated Fe(II,III) (hydr)oxides. in Y Zhu, H Guo, P Bhattacharya, A Ahmad, J Bundschuh & R Naidu (eds), Environmental Arsenic in a Changing World: Proceedings of the 7th International Congress and Exhibition on Arsenic in the Environment (AS 2018). CRC Press, pp. 401-402, 7th International Congress and Exhibition Arsenic in the Environment, 2018, Beijing, China, 1/07/18. https://doi.org/10.1201/9781351046633-155

Interaction of arsenic with co-precipitated Fe(II,III) (hydr)oxides. / van Genuchten, C.M.; Behrends, T.; Kraal, P. et al.
Environmental Arsenic in a Changing World: Proceedings of the 7th International Congress and Exhibition on Arsenic in the Environment (AS 2018). ed. / Yongguan Zhu; Huaming Guo; Prosun Bhattacharya; Arslan Ahmad; Jochen Bundschuh; Ravi Naidu. CRC Press, 2018. p. 401-402.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › peer-review

TY - GEN

T1 - Interaction of arsenic with co-precipitated Fe(II,III) (hydr)oxides

AU - van Genuchten, C.M.

AU - Behrends, T.

AU - Kraal, P.

AU - Stipp, S.L.S.

AU - Dideriksen, K.

N1 - Conference code: 7

PY - 2018

Y1 - 2018

N2 - Iron electrocoagulation (EC) is a low-cost arsenic (As) treatment method that is able to produce Fe(II,III) phases that bind As effectively, such as green rust (GR) and magnetite (Mag). We compared the As removal performance of coprecipitated GR, Mag and lepidocrocite (Lp) produced by Fe(0) EC. The As(III) removal efficiency for these phases was >60%, increasing in order of GR < Mag ≤ Lp, and all three Fe phases removed >95% of the initial As(V) (0.5 to 11 mg L−1). Spectroscopic data of EC samples revealed that As was able to substitute for tetrahedral Fe sites in Mag, associating with multiple Fe atoms, while As formed binuclear corner sharing geometries on GR and Lp surfaces. The formation of multinuclear As complexes during Mag production by Fe(0) EC can explain the low fraction of As remobilized from the solids during extractions with 2.5 mM PO3− 4 or 0.01 M NaOH. Taken together, our results show that Mag is the optimum phase for As removal in Fe(0) EC field treatment.

AB - Iron electrocoagulation (EC) is a low-cost arsenic (As) treatment method that is able to produce Fe(II,III) phases that bind As effectively, such as green rust (GR) and magnetite (Mag). We compared the As removal performance of coprecipitated GR, Mag and lepidocrocite (Lp) produced by Fe(0) EC. The As(III) removal efficiency for these phases was >60%, increasing in order of GR < Mag ≤ Lp, and all three Fe phases removed >95% of the initial As(V) (0.5 to 11 mg L−1). Spectroscopic data of EC samples revealed that As was able to substitute for tetrahedral Fe sites in Mag, associating with multiple Fe atoms, while As formed binuclear corner sharing geometries on GR and Lp surfaces. The formation of multinuclear As complexes during Mag production by Fe(0) EC can explain the low fraction of As remobilized from the solids during extractions with 2.5 mM PO3− 4 or 0.01 M NaOH. Taken together, our results show that Mag is the optimum phase for As removal in Fe(0) EC field treatment.

UR - https://www.scopus.com/pages/publications/85079242029

U2 - 10.1201/9781351046633-155

DO - 10.1201/9781351046633-155

M3 - Conference article in proceedings

AN - SCOPUS:85079242029

SN - 978-1-138-48609-6

SP - 401

EP - 402

BT - Environmental Arsenic in a Changing World

A2 - Zhu, Yongguan

A2 - Guo, Huaming

A2 - Bhattacharya, Prosun

A2 - Ahmad, Arslan

A2 - Bundschuh, Jochen

A2 - Naidu, Ravi

PB - CRC Press

T2 - 7th International Congress and Exhibition Arsenic in the Environment, 2018

Y2 - 1 July 2018 through 6 July 2018

ER -

van Genuchten CM, Behrends T, Kraal P, Stipp SLS, Dideriksen K. Interaction of arsenic with co-precipitated Fe(II,III) (hydr)oxides. In Zhu Y, Guo H, Bhattacharya P, Ahmad A, Bundschuh J, Naidu R, editors, Environmental Arsenic in a Changing World: Proceedings of the 7th International Congress and Exhibition on Arsenic in the Environment (AS 2018). CRC Press. 2018. p. 401-402 doi: 10.1201/9781351046633-155

Interaction of arsenic with co-precipitated Fe(II,III) (hydr)oxides

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