TY - JOUR
T1 - Heterogeneous fenton-like degradation of ofloxacin over sludge derived carbon as catalysts
T2 - Mechanism and performance
AU - Yu, Yang
AU - Huang, Fei
AU - He, Yide
AU - Liu, Xiyang
AU - Song, Chenjing
AU - Xu, Yanhua
AU - Zhang, Yongjun
N1 - Publisher Copyright:
© 2018
PY - 2019/3/1
Y1 - 2019/3/1
N2 - In this study, heterogeneous Fenton-like degradation of ofloxacin (OFX) was investigated by sludge derived carbon (SC). The effects of SC catalyst, temperature and pH on the efficiency of ofloxacin degradation were investigated. SC treated with sulfuric acid (SC-H 2 SO 4 ) performed high catalytic activity, indicating that sulfate group produced low pH of the surface and was beneficial for heterogeneous Fenton-like degradation. The removal of ofloxacin and TOC was 91.5% and 62.3%, respectively, after 180 min adsorption and 540 min oxidation, at pH 6 and a dosage of 138 mg L −1 H 2 O 2 . It was found that OFX conversion increased with the decrease of pH and OFX was degraded under the wide range of pH (3–6) by SC-H 2 SO 4 . These promising results clearly demonstrate the potential of the heterogeneous Fenton-like process for the effective degradation of ofloxacin by SC-H 2 SO 4 . Based on intermediated products identified by gas chromatography–mass spectrometry, a possible OFX oxidation pathway in Fenton-like reaction was proposed.
AB - In this study, heterogeneous Fenton-like degradation of ofloxacin (OFX) was investigated by sludge derived carbon (SC). The effects of SC catalyst, temperature and pH on the efficiency of ofloxacin degradation were investigated. SC treated with sulfuric acid (SC-H 2 SO 4 ) performed high catalytic activity, indicating that sulfate group produced low pH of the surface and was beneficial for heterogeneous Fenton-like degradation. The removal of ofloxacin and TOC was 91.5% and 62.3%, respectively, after 180 min adsorption and 540 min oxidation, at pH 6 and a dosage of 138 mg L −1 H 2 O 2 . It was found that OFX conversion increased with the decrease of pH and OFX was degraded under the wide range of pH (3–6) by SC-H 2 SO 4 . These promising results clearly demonstrate the potential of the heterogeneous Fenton-like process for the effective degradation of ofloxacin by SC-H 2 SO 4 . Based on intermediated products identified by gas chromatography–mass spectrometry, a possible OFX oxidation pathway in Fenton-like reaction was proposed.
KW - Heterogeneous Fenton-like process
KW - Ofloxacin
KW - Sludge derived carbon
KW - Surface modification
UR - http://www.scopus.com/inward/record.url?scp=85056663123&partnerID=8YFLogxK
U2 - 10.1016/j.scitotenv.2018.11.156
DO - 10.1016/j.scitotenv.2018.11.156
M3 - 文章
C2 - 30453264
AN - SCOPUS:85056663123
SN - 0048-9697
VL - 654
SP - 942
EP - 947
JO - Science of the Total Environment
JF - Science of the Total Environment
ER -