Cited by 114Advanced oxidation water treatmentPer- and polyfluoroalkyl substances researchWater Treatment and Disinfection

Enhanced removal of organic contaminants in water by the combination of peroxymonosulfate and carbonate

Nie, Minghua, Zhang, Wenjing, Yan, Caixia, Xu, Wenli, Wu, Leliang, Ye, Yuping, Hu, Yun, Dong, Wenbo·2019·Science of The Total Environment

Abstract

In this study, a favorable CO 32-/PMS system for efficient degradation of organic contaminants (acid orange 7 (AO7), acetaminophen, para-aminobenzoic acid, phenol, methylene orange, methylene blue) in water was firstly reported. Under optimal conditions, the decolorization ration of AO7 was 100% within 40 min. Data fitting showed that the AO7 decolorization could be described by the pseudo-first-order kinetics, and the rates constant values ranging from 0.0006 to 0.2297 min-1 depending on the operating parameters (initial PMS, CO 32-, AO7 concentrations). Radical scavenging studies revealed that superoxide anion radical (O 2-) and singlet oxygen (1 O 2) rather than sulfate (SO 4-) nor hydroxyl (HO) were the dominant oxidants might be responsible for AO7 degradation. The presence of NO 3-, HPO 42- and low concentration of Cl-, NO 2-, HCO 3-, H 2 PO 4-, HA had no significantly effect on the decolorization of AO7. Adding a higher Cl- concentration displayed favorable effects on the removal efficiencies of AO7, but adding a higher NO 2-, HCO 3-, H 2 PO 4- and HA concentration apparently inhibited this process. The decolorization of AO7 was lower in wastewater in comparison to other natural waters and ultrapure water, which was probably due to the presence of higher concentration of colloids in wastewater. Nevertheless, up to 94.8%, 97.0% and 85.1% of AO7 were degraded from the filtrate, permeate, and retentate phases of wastewater within 60 min, respectively. Consequently, CO 32-/PMS would be promising for removal methodology for AO7 in wastewater containing considerable colloids. Finally, three intermediates were identified and degradation pathways of AO7 were proposed.

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Crossref · 10.1016/j.scitotenv.2018.08.065

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  • An appreciable removal was observed for other pollutants, such as methylene blue, acetaminophen, phenol, methyl orange, and para-aminobenzoic acid.

    “An appreciable removal was observed for other pollutants, such as methylene blue, acetaminophen, phenol, methyl orange, and para-aminobenzoic acid.”
  • Nie et al. utilized the same process for the degradation of acid orange 7 (AO7); complete degradation of AO7 within 40 min was achieved; a pH range of 3-9 was effective, and inhibition was observed beyond this range.

    “Nie et al., also utilized the same process for the degradation of acid orange 7 (AO7). A complete degradation of AO7 within 40 min was achieved by this process. A pH range of 3-9 was effective for this process, and inhibition was observed beyond this range.”
  • The scavenging experiment in the presence of alcohols (·OH and SO4·-), L-histidine, and sodium azide (1O2) shows that the major reactive species are 1O2, which enhanced the degradation.

    “The scavenging experiment in the presence of alcohols ( · OHand SO4 ·-), L-histidine, and sodium azide ( 1 O2) shows that the major reactive species are 1 O2, which enhanced the degradation [83].”

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Authors
Nie, M., Zhang, W., Yan, C., Xu, W., Wu, L., Ye, Y., Hu, Y., & Dong, W.
Affiliations
  • Jiangxi Normal University (CN)
  • Fudan University (CN)
Corresponding author
  • Yan, Caixia
  • Dong, Wenbo
Venue
Science of The Total Environment
Publisher
Elsevier BV
Published
2019-01
Volume
647
Pages
734-743
ISSN
0048-9697 (ISSN-L)
OpenAlex
W2887927433
Cited by
114
References
67
Citations by year
2026: 9 · 2025: 10 · 2024: 15 · 2023: 15 · 2022: 15 · 2021: 25 · 2020: 14 · 2019: 10 · 2018: 1
FWCI
5.48
Type
journal article
Language
en
Open access
closed
Locations
  • The Science of The Total Environment (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Natural Science Foundation of China (41601521, 41601523)
  • Natural Science Foundation of Jiangxi Province (20161BAB213077, 20161BAB213079)
Topics
  • Physical Sciences › Environmental Science › Water Science and Technology › Advanced oxidation water treatment
  • Physical Sciences › Environmental Science › Environmental Chemistry › Per- and polyfluoroalkyl substances research
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Water Treatment and Disinfection
Keywords
peroxymonosulfate, carbonates, Acid Orange 7, dye decolorization, organic pollutant removal, superoxide, singlet oxygen, chloride effect, wastewater, colloids, degradation intermediates, degradation pathways, pseudo-first-order kinetics, advanced oxidation processes

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