Abstract
Highlights: ► Gamma irradiation was efficient for removing SMT in aqueous solution. ► Addition of H{sub 2}O{sub 2} during irradiation could enhance SMT degradation and mineralization. ► The degradation kinetics of SMT conformed to pseudo first-order equation. ► Possible pathways for SMT decomposition were proposed. -- Abstract: The gamma irradiation-induced degradation of sulfamethazine (SMT) in aqueous solution in the presence of hydrogen peroxide (H{sub 2}O{sub 2}) was investigated. The initial SMT concentration was 20 mg/L and it was irradiated in the presence of extra H{sub 2}O{sub 2} with initial concentration of 0, 10 and 30 mg/L. The results showed that gamma irradiation was effective for removing SMT in aqueous solution and its degradation conformed to the pseudo first-order kinetics under the applied conditions. When initial H{sub 2}O{sub 2} concentration was in the range of 0–30 mg/L, higher concentration of H{sub 2}O{sub 2} was more effective for the decomposition and mineralization of SMT. However, the removal of total organic carbon (TOC) was not as effective as that of SMT. Total nitrogen (TN) was not removed even at absorbed dose of 5 kGy, which was highest dose applied in this study. Major decomposition products of SMT, including degradation intermediates, organic acids and
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Liu, Yuankun;
[1]
Wang, Jianlong;
[1]
Beijing Key Laboratory of Fine Ceramics, Tsinghua University, Beijing 100084 (China)]
- Laboratory of Environmental Technology, INET, Tsinghua University, Beijing 100084 (China)
Citation Formats
Liu, Yuankun, Wang, Jianlong, and Beijing Key Laboratory of Fine Ceramics, Tsinghua University, Beijing 100084 (China)].
Degradation of sulfamethazine by gamma irradiation in the presence of hydrogen peroxide.
Netherlands: N. p.,
2013.
Web.
doi:10.1016/J.JHAZMAT.2013.01.050.
Liu, Yuankun, Wang, Jianlong, & Beijing Key Laboratory of Fine Ceramics, Tsinghua University, Beijing 100084 (China)].
Degradation of sulfamethazine by gamma irradiation in the presence of hydrogen peroxide.
Netherlands.
https://doi.org/10.1016/J.JHAZMAT.2013.01.050
Liu, Yuankun, Wang, Jianlong, and Beijing Key Laboratory of Fine Ceramics, Tsinghua University, Beijing 100084 (China)].
2013.
"Degradation of sulfamethazine by gamma irradiation in the presence of hydrogen peroxide."
Netherlands.
https://doi.org/10.1016/J.JHAZMAT.2013.01.050.
@misc{etde_22229966,
title = {Degradation of sulfamethazine by gamma irradiation in the presence of hydrogen peroxide}
author = {Liu, Yuankun, Wang, Jianlong, and Beijing Key Laboratory of Fine Ceramics, Tsinghua University, Beijing 100084 (China)]}
abstractNote = {Highlights: ► Gamma irradiation was efficient for removing SMT in aqueous solution. ► Addition of H{sub 2}O{sub 2} during irradiation could enhance SMT degradation and mineralization. ► The degradation kinetics of SMT conformed to pseudo first-order equation. ► Possible pathways for SMT decomposition were proposed. -- Abstract: The gamma irradiation-induced degradation of sulfamethazine (SMT) in aqueous solution in the presence of hydrogen peroxide (H{sub 2}O{sub 2}) was investigated. The initial SMT concentration was 20 mg/L and it was irradiated in the presence of extra H{sub 2}O{sub 2} with initial concentration of 0, 10 and 30 mg/L. The results showed that gamma irradiation was effective for removing SMT in aqueous solution and its degradation conformed to the pseudo first-order kinetics under the applied conditions. When initial H{sub 2}O{sub 2} concentration was in the range of 0–30 mg/L, higher concentration of H{sub 2}O{sub 2} was more effective for the decomposition and mineralization of SMT. However, the removal of total organic carbon (TOC) was not as effective as that of SMT. Total nitrogen (TN) was not removed even at absorbed dose of 5 kGy, which was highest dose applied in this study. Major decomposition products of SMT, including degradation intermediates, organic acids and some inorganic ions were detected by high performance liquid chromatography (HPLC) and ion chromatography (IC). Sulfate (SO{sub 4}{sup 2−}), formic acid (HCOOH), acetic acid (CH{sub 3}COOH), 4-aminophenol, 4-nitrophenol were identified in the irradiated solutions. Possible pathways for SMT decomposition by gamma irradiation in aqueous solution were proposed.}
doi = {10.1016/J.JHAZMAT.2013.01.050}
journal = []
volume = {250-251}
journal type = {AC}
place = {Netherlands}
year = {2013}
month = {Apr}
}
title = {Degradation of sulfamethazine by gamma irradiation in the presence of hydrogen peroxide}
author = {Liu, Yuankun, Wang, Jianlong, and Beijing Key Laboratory of Fine Ceramics, Tsinghua University, Beijing 100084 (China)]}
abstractNote = {Highlights: ► Gamma irradiation was efficient for removing SMT in aqueous solution. ► Addition of H{sub 2}O{sub 2} during irradiation could enhance SMT degradation and mineralization. ► The degradation kinetics of SMT conformed to pseudo first-order equation. ► Possible pathways for SMT decomposition were proposed. -- Abstract: The gamma irradiation-induced degradation of sulfamethazine (SMT) in aqueous solution in the presence of hydrogen peroxide (H{sub 2}O{sub 2}) was investigated. The initial SMT concentration was 20 mg/L and it was irradiated in the presence of extra H{sub 2}O{sub 2} with initial concentration of 0, 10 and 30 mg/L. The results showed that gamma irradiation was effective for removing SMT in aqueous solution and its degradation conformed to the pseudo first-order kinetics under the applied conditions. When initial H{sub 2}O{sub 2} concentration was in the range of 0–30 mg/L, higher concentration of H{sub 2}O{sub 2} was more effective for the decomposition and mineralization of SMT. However, the removal of total organic carbon (TOC) was not as effective as that of SMT. Total nitrogen (TN) was not removed even at absorbed dose of 5 kGy, which was highest dose applied in this study. Major decomposition products of SMT, including degradation intermediates, organic acids and some inorganic ions were detected by high performance liquid chromatography (HPLC) and ion chromatography (IC). Sulfate (SO{sub 4}{sup 2−}), formic acid (HCOOH), acetic acid (CH{sub 3}COOH), 4-aminophenol, 4-nitrophenol were identified in the irradiated solutions. Possible pathways for SMT decomposition by gamma irradiation in aqueous solution were proposed.}
doi = {10.1016/J.JHAZMAT.2013.01.050}
journal = []
volume = {250-251}
journal type = {AC}
place = {Netherlands}
year = {2013}
month = {Apr}
}