Sun Fei, Wang Aijie, Yan Qun, Zhang Guangsheng
School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, Jiangsu, China.
Sheng Wu Gong Cheng Xue Bao. 2013 Feb;29(2):161-8.
In this study, we investigated reductive degradation of nitroaromatic antibiotic chloramphenicol to non-effective antibacterial amine product in fed-batch biocatalyzed electrolysis systems (BES) (applied voltage was 0.5 V) under low temperature (12 +/- 2 degrees C). The ohm resistance of the whole BES reactor increased when the phosphate buffer solution concentrations decreased. Efficiencies (ErCAP) of chloramphenicol reduction with biocathode (PBS, 25 mmol/L) in presence of glucose was (86.3 +/- 1.69)% within 24 h and sludge fermentation liquor was (74.1 +/-1.44)% within 24 h. While the ErCAP of abiotic cathode under the same condition was only (57.9 +/- 1.94)% within 24 h. It suggested that biocathode could be a promising technology for reductive biodegradation of nitroaromatic antibiotics-containing wastewater in areas with relatively low annual mean temperature.
在本研究中，我们调查了在低温（12±2℃）下，补料分批生物催化电解系统（BES）（施加电压为0.5V）中硝基芳香族抗生素氯霉素还原降解为无抗菌活性的胺类产物的情况。当磷酸盐缓冲溶液浓度降低时，整个BES反应器的欧姆电阻增加。在存在葡萄糖的情况下，生物阴极（PBS，25 mmol/L）在24小时内对氯霉素的还原效率（ErCAP）为（86.3±1.69）%，而污泥发酵液在24小时内为（74.1±1.44）%。而在相同条件下，非生物阴极的ErCAP在24小时内仅为（57.9±1.94）%。这表明，对于年平均温度相对较低地区含有硝基芳香族抗生素的废水，生物阴极可能是一种很有前景的还原生物降解技术。
