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Cited by 189Arsenic contamination and mitigationEnvironmental remediation with nanomaterialsWater Treatment and Disinfection

Arsenic Removal with Composite Iron Matrix Filters in Bangladesh: A Field and Laboratory Study

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Neumann, Anke, Kaegi, Ralf, Voegelin, Andreas, Hussam, Abul, Munir, Abul K. M., Hug, Stephan J.·2013·Environmental Science & Technology
DOI 10.1021/es305176x
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Abstract

The main arsenic mitigation measures in Bangladesh, well-switching and deep tube wells, have reduced As exposure, but water treatment is important where As-free water is not available. Zero-valent iron (ZVI) based SONO household filters, developed in Bangladesh, remove As by corrosion of locally available inexpensive surplus iron and sand filtration in two buckets. We investigated As removal in SONO filters in the field and laboratory, covering a range of typical groundwater concentrations (in mg/L) of As (0.14-0.96), Fe (0-17), P (0-4.4), Ca (45-162), and Mn (0-2.8). Depending on influent Fe(II) concentrations, 20-80% As was removed in the top sand layer, but As removal to safe levels occurred in the ZVI-layer of the first bucket. Residual As, Fe, and Mn were removed after re-aeration in the sand of the second bucket. New and over 8-year-old filters removed As to <50 μg/L and mostly to <10 μg/L and Mn to <0.2 mg/L. Vertical concentration profiles revealed formation of Fe(II) by corrosion of Fe(0) with O2 and incorporation of As into forming amorphous Fe phases in the composite iron matrix (CIM) of newer filters and predominantly magnetite in older filters. As mass balances indicated that users filtered less than reported volumes of water, pointing to the need for more educational efforts. All tested SONO filters provided safe drinking water without replacement for up to over 8 years of use.

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  • One of the major problems encountered on the field by adsorption methods is the presence of high iron content in groundwater, which emanates into clogging of the filter material thereby reducing the lifetime of the filter.

    “One of the major problems encountered on the field by aforesaid adsorption methods is the presence of high iron content in groundwater, which emanates into clogging of the filter material thereby reducing the lifetime of the filter [178, 185].”

    From Arsenic Contamination of Groundwater: A Review of Sources, Prevalence, Health Risks, and Strategies for Mitigation (2014) · cites this paper as [185]

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Authors
Neumann, A., Kaegi, R., Voegelin, A., Hussam, A., Munir, A. K. M., & Hug, S. J.
Affiliations
  • Swiss Federal Institute of Aquatic Science and Technology (CH)
  • Eawag, Swiss Federal Institute of Aquatic Science and Technology, Ueberlandstrasse 133, CH-8600 Duebendorf, Switzerland
  • George Mason University (US)
  • Sono Technology and Research Inc., Courtpara, Kushtia, Bangladesh
Corresponding author
  • Neumann, Anke
  • Hug, Stephan J.
ORCID
Venue
Environmental Science & Technology
Publisher
American Chemical Society (ACS)
Published
2013-04-08
Volume
47
Issue
9
Pages
4544-4554
ISSN
  • 0013-936X (ISSN-L)
  • 1520-5851
DOI
10.1021/es305176x
OpenAlex
W2028657914
Cited by
189
References
2
Citations by year
2026: 5 · 2025: 4 · 2024: 10 · 2023: 8 · 2022: 17 · 2021: 15 · 2020: 24 · 2019: 15 · 2018: 17 · 2017: 16 · 2016: 19 · 2015: 20 · 2014: 15 · 2013: 4
FWCI
15.37
Type
journal article
Language
en
Open access
Locations
  • Environmental Science & Technology (publishedVersion)
  • PubMed (publishedVersion)
  • DORA Eawag (Swiss Federal Institute of Aquatic Science and Technology (Eawag)) (submittedVersion)
  • Publication Database GFZ (GFZ German Research Centre for Geosciences) (submittedVersion)
  • Newcastle University ePrints (Newcastle Univesity)
Topics
  • Physical Sciences › Environmental Science › Environmental Chemistry › Arsenic contamination and mitigation
  • Physical Sciences › Environmental Science › Environmental Engineering › Environmental remediation with nanomaterials
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Water Treatment and Disinfection
Keywords
arsenic removal, zero-valent iron, groundwater arsenic, drinking water treatment, iron corrosion, magnetite, manganese, sand filtration, reaeration, mass balance, Bangladesh
MeSH terms
Arsenic, Bangladesh, Filtration, Iron, Spectrometry, Fluorescence, Mass Spectrometry

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