التفاصيل البيبلوغرافية
| العنوان: |
A novel co-catalyzed system between persulfate and chlorite by sonolysis for removing triphenylmethane derivative. |
| المؤلفون: |
Xu, Qihui1 (AUTHOR), Leng, Haoran1 (AUTHOR), You, Hong1,2 (AUTHOR) youhong@hit.edu.cn, Wang, Shutao1,3 (AUTHOR) wshutao@hit.edu.cn, Li, Haoyang2 (AUTHOR), Yu, Yibo2 (AUTHOR) |
| المصدر: |
Journal of Environmental Sciences (Elsevier). Feb2022, Vol. 112, p291-306. 16p. |
| مصطلحات موضوعية: |
ACOUSTIC wave propagation, ULTRASONIC effects, RESPONSE surfaces (Statistics), DISSOLVED air flotation (Water purification), INDUCTIVE effect, FREE radicals |
| مستخلص: |
• The novel co-catalyzed system of ultrasonic/persulfate/chlorite was provided. • The apparent non-integer degradation kinetics was studied. • The non-free radical (ClO 2) and free radical (SO 4 ⋅− and ⋅ OH) processes were coupled. • The visualization of ultrasonic field effect was realized. Triphenylmethane (tpm) derivatives (e.g. tpm CV) have threatened the safety of the aquatic environment due to the potential toxicity and carcinogenicity. In this study, the novel ultrasonic/persulfate/chlorite (US/S 2 O 8 2−/ClO 2 −) oxidation process was developed for the effective removal of tpm CV in wastewater. The apparent non-integer kinetics (n around 1.20) of tpm CV degradation under different factors (R 2 Adj > 0.990) were investigated, respectively. Inhibiting effects of anions were greater than those of cations (except Fe(II/III)). The adding of micromolecule organic acids could regulate degradation towards positive direction. The double response surface methodology (RSM) was designed to optimize tpm CV removal process, and the acoustic-piezoelectric interaction was simulated to determine the propagation process of acoustic wave in the reactor. The possible degradation pathway was explored to mainly include carbonylation, carboxylation, and demethylation. The estimated effective-mean temperature at the bubble-water interface was calculated from 721 to 566 K after introducing the ClO 2 −, however, the adsorption or partitioning capacity of tpm CV in the reactive zone was widened from 0.0218 to 0.0982. The proposed co-catalysis of US/S 2 O 8 2−/ClO 2 − was based on the determined active species mainly including ClO 2 , SO 4 ⋅ −, and ⋅ OH. Compared with other US-based processes, the operating cost (3.97 $/m3) of US/S 2 O 8 2−/ClO 2 − with the EE/O value (16.8 kWh/m3) was relatively reduced. [Display omitted] [ABSTRACT FROM AUTHOR] |
|
Copyright of Journal of Environmental Sciences (Elsevier) is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Business Source Index |
