Arsenite removal in groundwater treatment plants by sequential Permanganate―Ferric treatment

Arslan Ahmad, Emile Cornelissen, Stephan van de Wetering, Tim van Dijk, Case van Genuchten, Jochen Bundschuh, Albert van der Wal, Prosun Bhattacharya

Research output: Contribution to journalArticleAcademicpeer-review

11 Citations (Scopus)

Abstract

The Dutch drinking water sector is actively investigating methods to reduce arsenic (As) to <1 μg/L in drinking water supply. We investigated (1) the effectiveness of sequential permanganate (MnO4¯ )–ferric (Fe(III)) dosing during aeration–rapid sand filtration to achieve <1 μg/L As (2) the influence of MnO4¯ –Fe(III) dosing on pre-established removal patterns of As(III), Fe(II), Mn(II) and NH4 + in rapid sand filters and (3) the influence of MnO4¯ –Fe(III) dosing on the settling and molecular-scale structural properties of the filter backwash solids. We report that MnO4¯ –Fe(III) dosing is an effective technique to improve arsenite [As(III)] removal at groundwater treatment plants. At a typical aeration—rapid sand filtration facility in the Netherlands effluent As concentrations of <1 μg/L were achieved with 1.2 mg/L MnO4 ¯–and 1.8 mg/L Fe(III). The optimized combination of MnO4¯ –and Fe(III) doses did not affect the removal efficiency of Fe(II), Mn(II) and NH4 + in rapid sand filters, however, the removal patterns of Fe(II) and Mn(II) in rapid sand filter were altered, as well as the settling behaviour of backwash solids. The characterization of backwash solids by Fe K-edge X-ray absorption spectroscopy (XAS) and X-ray diffraction (XRD) showed that the changed settling velocity of backwash solids with MnO4¯ –Fe(III) in place was not due to changes in the molecular-scale structure of Fe-precipitates that constitute the major portion of the backwash solids.

Original languageEnglish
Pages (from-to)221-229
JournalJournal of Water Process Engineering
Volume26
DOIs
Publication statusPublished - Dec 2018

Fingerprint

arsenite
Groundwater
Arsenic
arsenic
Sand
sand
groundwater
filter
Potable water
settling behavior
X ray absorption spectroscopy
Drinking Water
settling velocity
atomic absorption spectroscopy
Water supply
X-Ray Absorption Spectroscopy
X-ray spectroscopy
Structural properties
Precipitates
Effluents

Keywords

  • Arsenic removal
  • Arsenite oxidation
  • Drinking water
  • Groundwater treatment
  • Permanganate
  • Rapid sand filtration

Cite this

Ahmad, A., Cornelissen, E., van de Wetering, S., van Dijk, T., van Genuchten, C., Bundschuh, J., ... Bhattacharya, P. (2018). Arsenite removal in groundwater treatment plants by sequential Permanganate―Ferric treatment. Journal of Water Process Engineering, 26, 221-229. https://doi.org/10.1016/j.jwpe.2018.10.014
Ahmad, Arslan ; Cornelissen, Emile ; van de Wetering, Stephan ; van Dijk, Tim ; van Genuchten, Case ; Bundschuh, Jochen ; van der Wal, Albert ; Bhattacharya, Prosun. / Arsenite removal in groundwater treatment plants by sequential Permanganate―Ferric treatment. In: Journal of Water Process Engineering. 2018 ; Vol. 26. pp. 221-229.
@article{5175f6919ca14e33af2d9335ef4041cb,
title = "Arsenite removal in groundwater treatment plants by sequential Permanganate―Ferric treatment",
abstract = "The Dutch drinking water sector is actively investigating methods to reduce arsenic (As) to <1 μg/L in drinking water supply. We investigated (1) the effectiveness of sequential permanganate (MnO4¯ )–ferric (Fe(III)) dosing during aeration–rapid sand filtration to achieve <1 μg/L As (2) the influence of MnO4¯ –Fe(III) dosing on pre-established removal patterns of As(III), Fe(II), Mn(II) and NH4 + in rapid sand filters and (3) the influence of MnO4¯ –Fe(III) dosing on the settling and molecular-scale structural properties of the filter backwash solids. We report that MnO4¯ –Fe(III) dosing is an effective technique to improve arsenite [As(III)] removal at groundwater treatment plants. At a typical aeration—rapid sand filtration facility in the Netherlands effluent As concentrations of <1 μg/L were achieved with 1.2 mg/L MnO4 ¯–and 1.8 mg/L Fe(III). The optimized combination of MnO4¯ –and Fe(III) doses did not affect the removal efficiency of Fe(II), Mn(II) and NH4 + in rapid sand filters, however, the removal patterns of Fe(II) and Mn(II) in rapid sand filter were altered, as well as the settling behaviour of backwash solids. The characterization of backwash solids by Fe K-edge X-ray absorption spectroscopy (XAS) and X-ray diffraction (XRD) showed that the changed settling velocity of backwash solids with MnO4¯ –Fe(III) in place was not due to changes in the molecular-scale structure of Fe-precipitates that constitute the major portion of the backwash solids.",
keywords = "Arsenic removal, Arsenite oxidation, Drinking water, Groundwater treatment, Permanganate, Rapid sand filtration",
author = "Arslan Ahmad and Emile Cornelissen and {van de Wetering}, Stephan and {van Dijk}, Tim and {van Genuchten}, Case and Jochen Bundschuh and {van der Wal}, Albert and Prosun Bhattacharya",
year = "2018",
month = "12",
doi = "10.1016/j.jwpe.2018.10.014",
language = "English",
volume = "26",
pages = "221--229",
journal = "Journal of Water Process Engineering",
issn = "2214-7144",
publisher = "Elsevier B.V.",

}

Ahmad, A, Cornelissen, E, van de Wetering, S, van Dijk, T, van Genuchten, C, Bundschuh, J, van der Wal, A & Bhattacharya, P 2018, 'Arsenite removal in groundwater treatment plants by sequential Permanganate―Ferric treatment' Journal of Water Process Engineering, vol. 26, pp. 221-229. https://doi.org/10.1016/j.jwpe.2018.10.014

Arsenite removal in groundwater treatment plants by sequential Permanganate―Ferric treatment. / Ahmad, Arslan; Cornelissen, Emile; van de Wetering, Stephan; van Dijk, Tim; van Genuchten, Case; Bundschuh, Jochen; van der Wal, Albert; Bhattacharya, Prosun.

In: Journal of Water Process Engineering, Vol. 26, 12.2018, p. 221-229.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Arsenite removal in groundwater treatment plants by sequential Permanganate―Ferric treatment

AU - Ahmad, Arslan

AU - Cornelissen, Emile

AU - van de Wetering, Stephan

AU - van Dijk, Tim

AU - van Genuchten, Case

AU - Bundschuh, Jochen

AU - van der Wal, Albert

AU - Bhattacharya, Prosun

PY - 2018/12

Y1 - 2018/12

N2 - The Dutch drinking water sector is actively investigating methods to reduce arsenic (As) to <1 μg/L in drinking water supply. We investigated (1) the effectiveness of sequential permanganate (MnO4¯ )–ferric (Fe(III)) dosing during aeration–rapid sand filtration to achieve <1 μg/L As (2) the influence of MnO4¯ –Fe(III) dosing on pre-established removal patterns of As(III), Fe(II), Mn(II) and NH4 + in rapid sand filters and (3) the influence of MnO4¯ –Fe(III) dosing on the settling and molecular-scale structural properties of the filter backwash solids. We report that MnO4¯ –Fe(III) dosing is an effective technique to improve arsenite [As(III)] removal at groundwater treatment plants. At a typical aeration—rapid sand filtration facility in the Netherlands effluent As concentrations of <1 μg/L were achieved with 1.2 mg/L MnO4 ¯–and 1.8 mg/L Fe(III). The optimized combination of MnO4¯ –and Fe(III) doses did not affect the removal efficiency of Fe(II), Mn(II) and NH4 + in rapid sand filters, however, the removal patterns of Fe(II) and Mn(II) in rapid sand filter were altered, as well as the settling behaviour of backwash solids. The characterization of backwash solids by Fe K-edge X-ray absorption spectroscopy (XAS) and X-ray diffraction (XRD) showed that the changed settling velocity of backwash solids with MnO4¯ –Fe(III) in place was not due to changes in the molecular-scale structure of Fe-precipitates that constitute the major portion of the backwash solids.

AB - The Dutch drinking water sector is actively investigating methods to reduce arsenic (As) to <1 μg/L in drinking water supply. We investigated (1) the effectiveness of sequential permanganate (MnO4¯ )–ferric (Fe(III)) dosing during aeration–rapid sand filtration to achieve <1 μg/L As (2) the influence of MnO4¯ –Fe(III) dosing on pre-established removal patterns of As(III), Fe(II), Mn(II) and NH4 + in rapid sand filters and (3) the influence of MnO4¯ –Fe(III) dosing on the settling and molecular-scale structural properties of the filter backwash solids. We report that MnO4¯ –Fe(III) dosing is an effective technique to improve arsenite [As(III)] removal at groundwater treatment plants. At a typical aeration—rapid sand filtration facility in the Netherlands effluent As concentrations of <1 μg/L were achieved with 1.2 mg/L MnO4 ¯–and 1.8 mg/L Fe(III). The optimized combination of MnO4¯ –and Fe(III) doses did not affect the removal efficiency of Fe(II), Mn(II) and NH4 + in rapid sand filters, however, the removal patterns of Fe(II) and Mn(II) in rapid sand filter were altered, as well as the settling behaviour of backwash solids. The characterization of backwash solids by Fe K-edge X-ray absorption spectroscopy (XAS) and X-ray diffraction (XRD) showed that the changed settling velocity of backwash solids with MnO4¯ –Fe(III) in place was not due to changes in the molecular-scale structure of Fe-precipitates that constitute the major portion of the backwash solids.

KW - Arsenic removal

KW - Arsenite oxidation

KW - Drinking water

KW - Groundwater treatment

KW - Permanganate

KW - Rapid sand filtration

U2 - 10.1016/j.jwpe.2018.10.014

DO - 10.1016/j.jwpe.2018.10.014

M3 - Article

VL - 26

SP - 221

EP - 229

JO - Journal of Water Process Engineering

JF - Journal of Water Process Engineering

SN - 2214-7144

ER -

Ahmad A, Cornelissen E, van de Wetering S, van Dijk T, van Genuchten C, Bundschuh J et al. Arsenite removal in groundwater treatment plants by sequential Permanganate―Ferric treatment. Journal of Water Process Engineering. 2018 Dec;26:221-229. https://doi.org/10.1016/j.jwpe.2018.10.014