The DOI matches its Crossref record; 29 of the 29 references it cites were found in a registry or an index.
Activation of Manganese Oxidants with Bisulfite for Enhanced Oxidation of Organic Contaminants: The Involvement of Mn(III)
Abstract
MnO4(-) was activated by HSO3(-), resulting in a process that oxidizes organic contaminants at extraordinarily high rates. The permanganate/bisulfite (PM/BS) process oxidized phenol, ciprofloxacin, and methyl blue at pHini 5.0 with rates (kobs ≈ 60-150 s(-1)) that were 5-6 orders of magnitude faster than those measured for permanganate alone, and ∼5 to 7 orders of magnitude faster than conventional advanced oxidation processes for water treatment. Oxidation of phenol was fastest at pH 4.0, but still effective at pH 7.0, and only slightly slower when performed in tap water. A smaller, but still considerable (∼3 orders of magnitude) increase in oxidation rates of methyl blue was observed with MnO2 activated by HSO3(-) (MO/BS). The above results, time-resolved spectroscopy of manganese species under various conditions, stoichiometric analysis of pH changes, and the effect of pyrophosphate on UV absorbance spectra suggest that the reactive intermediate(s) responsible for the extremely rapid oxidation of organic contaminants in the PM/BS process involve manganese(III) species with minimal stabilization by complexation. The PM/BS process may lead to a new category of advanced oxidation technologies based on contaminant oxidation by reactive manganese(III) species, rather than hydroxyl and sulfate radicals.
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Self-citationOxidation of aniline and other primary aromatic amines by manganese dioxide
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Qian, K., Chen, H., Li, W., Ao, Z., Wu, Y.-N., & Guan, X. (2021) · Environmental Science & Technology · doi:10.1021/acs.est.0c08805 · Cited by 517
Self-citationSulfite-based advanced oxidation and reduction processes for water treatment
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Contaminants of emerging concern: a review of new approach in AOP technologies
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Metadata
- Authors
- Sun, B., Guan, X., Fang, J., & Tratnyek, P. G.
- Venue
- Environmental Science & Technology
- Publisher
- American Chemical Society (ACS)
- Published
- 2015-10-09
- Volume
- 49
- Issue
- 20
- Pages
- 12414-12421
- ISSN
- 0013-936X (ISSN-L)
- 1520-5851
- OpenAlex
- W2208083189
- Cited by
- 320
- References
- 29
- FWCI
- 13.34
- Type
- journal article
- Language
- en
- Open access
- closed
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