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Cited by 13Arsenic contamination and mitigationAdvanced oxidation water treatmentWater Treatment and Disinfection

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Arsenite removal using a pilot system of ultrasound and ultraviolet followed by microfiltration

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Cui, Mingcan, Jang, Min, Ibrahim, Shaliza, Park, Beomguk, Cho, Eunju, Khim, Jeehyeong·2014·Ultrasonics Sonochemistry
DOI 10.1016/j.ultsonch.2014.01.001
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Abstract

Batch and continuous-flow pilot tests using ultrasound (US), ultraviolet (UV) and a combination of US and UV were conducted to determine the oxidation rates of arsenite [As(III)]. Compared to the single processes of US or UV, the combined US/UV system was more effective for As(III) oxidation with a synergy index of more than 1.5. A high rate constant of As(III) removal was obtained as ferrous [Fe(II)] ions existed. Like the pseudo-Fenton reaction, Fe(II) species can participate in the production of additional ·OH by reacting with H2O2 produced by US, before being oxidized to Fe(III). From the results of batch tests, the optimum molar ratio of Fe(II)/As(III) and pH were found to be 83 and 6-9.5, respectively. Similarly, the continuous-flow pilot tests showed that US/UV system could remove As(III) below the regulation [10 μg L(-1) as total As (Astot)] at 91 of molar ratio [Fe(II)/As(III)] and 3-h HRT. The continuous-stirred-tank-reactor (CSTR) modeling showed that the scavenging effect of anionic species (Cl(-) and CO3(2-)) for ·OH might prevail in the single processes, whereas it is insignificant in the combined process. Without using chemicals, microfiltration (MF) was adopted to treat sludge produced in oxidation step. In terms of an engineering aspect, the operational critical flux (CF) and cycle time were also optimized through the continuous-flow tests of MF system. As an energy-utilizing oxidation technique that does not require a catalyst, the combined energy system employing US/UV followed by MF could be a promising alternative for treating As(III) and Fe(II) simultaneously.

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  • According to Hussam and Munir, approximately 350,000 ZVI filters are operational in Bangladesh, Nepal, Pakistan, India, and Egypt, and there are several studies showing promising results of arsenic removals in field.

    “According to Hussam and Munir [190], approximately 350,000 ZVI filters are operational in Bangladesh, Nepal, Pakistan, India, and Egypt and there are several studies showing promising results of As removals in field [188–192].”

    From Arsenic Contamination of Groundwater: A Review of Sources, Prevalence, Health Risks, and Strategies for Mitigation (2014) · cites this paper as [190]

  • Removal of arsenic using zero valent iron has been widely explored by several research groups both in the laboratory and in the field.

    “In the last decade, removal of As using zero valent iron (ZVI) or Fe(0) for removal of As has been widely explored by several research groups both in the laboratory [142, 186, 187] and in the field [188–192].”

    From Arsenic Contamination of Groundwater: A Review of Sources, Prevalence, Health Risks, and Strategies for Mitigation (2014) · cites this paper as [190]

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Metadata

Authors
Cui, M., Jang, M., Ibrahim, S., Park, B., Cho, E., & Khim, J.
Affiliations
  • Korea University (KR)
  • University of Malaya (MY)
Corresponding author
  • Jang, Min
  • Khim, Jeehyeong
ORCID
Venue
Ultrasonics Sonochemistry
Publisher
Elsevier BV
Published
2014-07
Volume
21
Issue
4
Pages
1527-1534
ISSN
1350-4177 (ISSN-L)
DOI
10.1016/j.ultsonch.2014.01.001
OpenAlex
W2106802403
Cited by
13
References
0
Citations by year
2026: 1 · 2024: 1 · 2023: 1 · 2021: 2 · 2020: 1 · 2018: 1 · 2017: 1 · 2016: 2 · 2015: 1 · 2014: 2
FWCI
1.53
Type
journal article
Language
en
Open access
Licence
Locations
  • Ultrasonics Sonochemistry (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
Funders
National Research Foundation of Korea (KRF-2009-0092799)
Topics
  • Physical Sciences › Environmental Science › Environmental Chemistry › Arsenic contamination and mitigation
  • Physical Sciences › Environmental Science › Water Science and Technology › Advanced oxidation water treatment
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Water Treatment and Disinfection
Keywords
arsenite removal, arsenite oxidation, ultrasound, UV irradiation, synergistic effect, ferrous ions, hydroxyl radicals, hydrogen peroxide, microfiltration, sludge treatment, critical flux, free radical scavenging

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