The DOI matches its Crossref record; 3 of the 3 references it cites were found in a registry or an index.
Efficient Reductive Dechlorination of Monochloroacetic Acid by Sulfite/UV Process
Abstract
Most halogenated organic compounds (HOCs) are toxic and persistent, and their efficient destruction is currently a challenge. Here, we proposed a sulfite/UV (253.7 nm) process to eliminate HOCs. Monochloroacetic acid (MCAA) was selected as the target compound and was degraded rapidly in the sulfite/UV process. The degradation kinetics were accelerated proportionally to the increased sulfite concentration, while the significant enhancement by increasing pH only occurred in a pH range of 6.0-8.7. The degradation proceeded via a reductive dechlorination mechanism induced by hydrated electron (e(aq)(-)), and complete dechlorination was readily achieved with almost all the chlorine atoms in MCAA released as chloride ions. Mass balance (C and Cl) studies showed that acetate, succinate, sulfoacetate, and chloride ions were the major products, and a degradation pathway was proposed. The dual roles of pH were not only to regulate the S(IV) species distribution but also to control the interconversion between e(aq)(-) and H(•). Effective quantum efficiency (Φ) for the formation of e(aq)(-) in the process was determined to be 0.116 ± 0.002 mol/einstein. The present study may provide a promising alternative for complete dehalogenation of most HOCs and reductive detoxification of numerous toxicants.
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Buxton, G. V., Greenstock, C. L., Helman, W. P., & Ross, A. B. (1988) · Journal of Physical and Chemical Reference Data · doi:10.1063/1.555805 · Cited by 12,332
RICHARDSON, S., PLEWA, M., WAGNER, E., SCHOENY, R., & DEMARINI, D. (2007) · Mutation Research/Reviews in Mutation Research · doi:10.1016/j.mrrev.2007.09.001 · Cited by 3,317
Destruction of chlorination byproducts with sulfite
Croue, J. P., & Reckhow, D. A. (1989) · Environmental Science & Technology · doi:10.1021/es00069a014 · Cited by 128
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Sulfite-based advanced oxidation and reduction processes for water treatment
Wu, S., Shen, L., Lin, Y., Yin, K., & Yang, C. (2021) · Chemical Engineering Journal · doi:10.1016/j.cej.2021.128872 · Cited by 382
Degradation and Removal Methods for Perfluoroalkyl and Polyfluoroalkyl Substances in Water
Merino, N., Qu, Y., Deeb, R. A., Hawley, E. L., Hoffmann, M. R., & Mahendra, S. (2016) · Environmental Engineering Science · doi:10.1089/ees.2016.0233 · Cited by 349
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Metadata
- Authors
- Li, X., Ma, J., Liu, G., Fang, J., Yue, S., Guan, Y., Chen, L., & Liu, X.
- Venue
- Environmental Science & Technology
- Publisher
- American Chemical Society (ACS)
- Published
- 2012-06-22
- Volume
- 46
- Issue
- 13
- Pages
- 7342-7349
- ISSN
- 0013-936X (ISSN-L)
- 1520-5851
- OpenAlex
- W2323601547
- Cited by
- 336
- References
- 3
- FWCI
- 6.69
- Type
- journal article
- Language
- en
- Open access
- closed
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- Li, X., Ma, J., Liu, G., Fang, J., Yue, S., Guan, Y., Chen, L., & Liu, X. (2012). Efficient Reductive Dechlorination of Monochloroacetic Acid by Sulfite/UV Process. Environmental Science & Technology. https://doi.org/10.1021/es3008535
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