| 저자(한글) |
Duan, H.,Liu, Y.,Yin, X.,Bai, J.,Qi, J. |
| 저자(영문) |
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| 소속기관 |
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| 소속기관(영문) |
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| 출판인 |
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| 간행물 번호 |
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| 발행연도 |
2016-01-01 |
| 초록 |
In this study, schwertmannite was used as heterogeneous Fenton-like catalyst for nitrobenzene degradation in a closed batch system. The properties of catalyst samples were characterized by measuring the specific area (S BET ), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and X-ray diffraction (XRD). The catalytic activity was evaluated in view of the effect of various conditions (initial pH value, catalyst dosage, H 2 O 2 concentration). The results showed that the removal efficiency of nitrobenzene was significantly enhanced in the presence of schwertmannite and the catalyst retained almost its high catalytic activity after 5 consecutive runs. The optimum pH value in this study was found to be 3.0 and the optimal concentration of H 2 O 2 was 500mg/l. The removal of the nitrobenzene could be achieved 92.5% in 30min at initial conditions. The mechanism of catalytic oxidation was radical mechanism via the catalysis of schwertmannite to form hydroxyl radicals by decomposing H 2 O 2 . In addition, nitrophenols were the main transformation products detected by liquid chromatography and mass spectrometric (LC/MS). |
| 원문URL |
http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=03553784&target=NART&cn=NART73261356 |
| 첨부파일 |
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