Impact of Condition Variations on Bioelectrochemical System Performance: An Experimental Investigation of Sulfamethoxazole Degradation

Bioelectrochemical systems (BESs) are an innovative technology for the efficient degradation of antibiotics. ( ) MR-1 plays a pivotal role in degrading sulfamethoxazole (SMX) in BESs. Our study investigated the effect of BES conditions on SMX degradation, focusing on microbial activity. The results...

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Published in:Molecules (Basel, Switzerland) Switzerland), 2024-05, Vol.29 (10), p.2276
Main Authors: Xue, Qun, Chen, Zhihui, Xie, Wenjing, Zhang, Shuke, Jiang, Jie, Sun, Guoxin
Format: Article
Language:English
Subjects:
Anti-Bacterial Agents - chemistry
Anti-Bacterial Agents - pharmacology
Antibiotics
Bacterial infections
Biodegradation
Biodegradation, Environmental
Bioelectric Energy Sources
bioelectrochemical system
Care and treatment
Efficiency
Electrochemical Techniques
Electrodes
Electrolysis
electrolysis cell
Electrolytes
H-type cell
Microorganisms
Pollutants
Purification
Sewage
Shewanella - metabolism
Shewanella oneidensis MR-1
Sulfamethoxazole
Sulfamethoxazole - metabolism
Wastewater
Water treatment
Water treatment plants
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Summary:Bioelectrochemical systems (BESs) are an innovative technology for the efficient degradation of antibiotics. ( ) MR-1 plays a pivotal role in degrading sulfamethoxazole (SMX) in BESs. Our study investigated the effect of BES conditions on SMX degradation, focusing on microbial activity. The results revealed that BESs operating with a 0.05 M electrolyte concentration and 2 mA/cm current density outperformed electrolysis cells (ECs). Additionally, higher electrolyte concentrations and elevated current density reduced SMX degradation efficiency. The presence of nutrients had minimal effect on the growth of MR-1 in BESs; it indicates that MR-1 can degrade SMX without nutrients in a short period of time. We also highlighted the significance of mass transfer between the cathode and anode. Limiting mass transfer at a 10 cm electrode distance enhanced MR-1 activity and BES performance. In summary, this study reveals the complex interaction of factors affecting the efficiency of BES degradation of antibiotics and provides support for environmental pollution control.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules29102276