TY - JOUR
T1 - Enhanced recalcitrant pollutant degradation using hydroxyl radicals generated using ozone and bioelectricity-driven cathodic hydrogen peroxide production
T2 - Bio-E-Peroxone process
AU - Chen, Shuning
AU - Wei, Kajia
AU - Wang, Yujue
AU - Wang, Jun
AU - Huang, Haiou
AU - Huang, Xia
AU - Logan, Bruce E.
AU - Zhang, Xiaoyuan
N1 - Funding Information:
This research was supported by the National Natural Science Foundation of China (Grant No. 51778326 ), special fund of State Key Joint Laboratory of Environment Simulation and Pollution Control (Grant No. 18L01ESPC ), and special fund of Tsinghua University Initiative Scientific Research Program .
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2021/7/1
Y1 - 2021/7/1
N2 - Accelerated pollutant degradation was examined using a new combined chemical and bioelectrochemical system, called a Bio-E-Peroxone process, based on generating ⋅OH from H2O2 produced on the cathode of a microbial fuel cell (MFC) and using ozone-enriched air. To optimize H2O2 formation, different carbon materials were examined and the highest H2O2 rates were obtained using XC-72 carbon black cathode. In E-Peroxone tests using the XC-72 cathode, methylene blue (a model pollutant) degradation rates followed first-order kinetics, with a rate constant of 0.237 min−1, 6 times higher than that obtained using only ozonation (0.032 min−1), 15 times of electrolysis+O2 system (0.015 min−1) and 46 times greater than electrolysis (0.005 min−1). In MFC tests when using the complete Bio-E-Peroxone system, the removal rate constant for methylene blue was 2.05 h−1, compared to 1.86 h−1 using only ozone and 0.41 h−1 using only MFC. Adding ozone to the air in cathode also increased power production by 47% to 170 mW m−3. The results demonstrated that this Bio-E-Peroxone system could be a feasible method for both refractory compounds degradation and wastewater electricity generation.
AB - Accelerated pollutant degradation was examined using a new combined chemical and bioelectrochemical system, called a Bio-E-Peroxone process, based on generating ⋅OH from H2O2 produced on the cathode of a microbial fuel cell (MFC) and using ozone-enriched air. To optimize H2O2 formation, different carbon materials were examined and the highest H2O2 rates were obtained using XC-72 carbon black cathode. In E-Peroxone tests using the XC-72 cathode, methylene blue (a model pollutant) degradation rates followed first-order kinetics, with a rate constant of 0.237 min−1, 6 times higher than that obtained using only ozonation (0.032 min−1), 15 times of electrolysis+O2 system (0.015 min−1) and 46 times greater than electrolysis (0.005 min−1). In MFC tests when using the complete Bio-E-Peroxone system, the removal rate constant for methylene blue was 2.05 h−1, compared to 1.86 h−1 using only ozone and 0.41 h−1 using only MFC. Adding ozone to the air in cathode also increased power production by 47% to 170 mW m−3. The results demonstrated that this Bio-E-Peroxone system could be a feasible method for both refractory compounds degradation and wastewater electricity generation.
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U2 - 10.1016/j.scitotenv.2020.144819
DO - 10.1016/j.scitotenv.2020.144819
M3 - Article
AN - SCOPUS:85101781251
SN - 0048-9697
VL - 776
JO - Science of the Total Environment
JF - Science of the Total Environment
M1 - 144819
ER -