利用基于微藻的工艺去除养殖废水尾水中的抗生素
Removal of Antibiotics in Breeding Wastewater Tailwater Using Microalgae-Based Process.
作者信息
Lin Shutao, Shi Chunhai, Wang Haimei, Ma Xiaoli, Li Jian, Chen Siqin, Guo Niuniu, Zhang Zhi
机构信息
Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, 400045, China.
College of Environment and Ecology, Chongqing University, Chongqing, 400045, China.
出版信息
Bull Environ Contam Toxicol. 2025 Jan 25;114(2):27. doi: 10.1007/s00128-024-03971-1.
Ciprofloxacin (CIP) and oxytetracycline (OTC) are commonly detected antibiotic species in breeding wastewater, and microalgae-based antibiotic treatment technology is an environmentally friendly and cost-effective method for its removal. This study evaluated the effects of CIP and OTC on Scenedesmus sp. in the breeding wastewater tailwater and the removal mechanisms of antibiotics. The results showed that Scenedesmus sp could increase antibiotic tolerance by enhancing antioxidant system activity. Compared to CIP, Scenedesmus sp showed better performance for OTC removal, the removal efficiencies were 100%, 96.87%, 95.75%, 90.18% and 83.91% at 0.1, 0.5, 1, 5, and 10 mg L OTC, respectively. The removal routes indicated that CIP was mainly removed by biodegradation (38.88%) and photolysis (14.30%) whereas OTC was mainly removed by hydrolysis (43.47%) and biodegradation (33.45%). Product toxicity predictions showed that most of the degradation products of CIP and OTC were less toxic than their parent compounds, confirming the feasibility of microalgae biotreatment for antibiotic removal.
环丙沙星（CIP）和土霉素（OTC）是养殖废水中常见的抗生素种类，基于微藻的抗生素处理技术是一种环保且经济高效的去除方法。本研究评估了CIP和OTC对养殖废水尾水中的栅藻的影响以及抗生素的去除机制。结果表明，栅藻可通过增强抗氧化系统活性来提高抗生素耐受性。与CIP相比，栅藻对OTC的去除效果更好，在0.1、0.5、1、5和10 mg/L OTC时的去除效率分别为100%、96.87%、95.75%、90.18%和83.91%。去除途径表明，CIP主要通过生物降解（38.88%）和光解（14.30%）去除，而OTC主要通过水解（43.47%）和生物降解（33.45%）去除。产物毒性预测表明，CIP和OTC的大多数降解产物毒性低于其母体化合物，证实了微藻生物处理去除抗生素的可行性。
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