三角褐指藻对环丙沙星的去除过程及影响因素  

Removal Process of Ciprofloxacin by Phaeodactylum tricornutum and Its Influencing Factors

作　　者：姜现静 吕剑[1,2,3] 武君 王建华 张翠[1] Jiang Xianjing;Lu Jian;Wu Jun;Wang Jianhua;Zhang Cui(CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation,Yantai Institute of Coastal Zone Research,Chinese Academy of Sciences,Yantai 264003,China;Shandong Key Laboratory of Coastal Environmental Processes,Yantai 264003,China;University of Chinese Academy of Sciences,Beijing 100049,China;Yantai Research Institute,Harbin Engineering University,Yantai 264006,China)

机构地区：[1]中国科学院烟台海岸带研究所,中国科学院海岸带环境过程与生态修复重点实验室,烟台264003 [2]山东省海岸带环境过程重点实验室,烟台264003 [3]中国科学院大学,北京100049 [4]烟台哈尔滨工程大学研究院,烟台264006

出　　处：《生态毒理学报》2022年第4期523-532,共10页Asian Journal of Ecotoxicology

基　　金：国家自然科学基金面上项目(41877131);泰山学者工程专项(tsqn201812116);中国科学院科技服务网络计划(STS计划)区域重点项目(KFJ-STS-QYZX-114)。

摘　　要：我国沿海水域面临严峻的抗生素污染问题,威胁生态平衡和人类健康。微藻在抗生素污水治理领域具有广阔的应用前景。本文选取海水养殖常用的三角褐指藻,以环丙沙星(ciprofloxacin,CIP)为目标污染物,研究了三角褐指藻对CIP的去除动力学规律。并进一步探究了pH、光照、盐度和抗生素浓度对去除效率的影响。当CIP初始浓度为600μg·L^(-1)时,90 d内三角褐指藻能去除60.0%的CIP,该过程符合一级动力学模型,分别在pH为5.5、33%光照强度、10‰盐度条件下得到最佳去除率,而且去除率与抗生素初始浓度呈负相关关系。三角褐指藻对CIP表现出良好的耐受性,为微藻在海洋抗生素污染治理领域的应用提供参考。Coastal water in China is facing severe antibiotic pollution,which threatens ecological safety and human health.Microalgae have been widely used in many fields including wastewater containing antibiotic treatment.This study selected Phaeodactylum tricornutum(P.tricornutum),which is a commonly used marine aquaculture microalgae to investigate the removal kinetics of ciprofloxacin(CIP).The effects of pH,light,salinity and antibiotic concentration on removal efficiency were further investigated.When the initial concentration of CIP was 600μg·L^(-1),60.0%of CIP could be removed within 90 d.The removal process could be described by the first-order kinetic model.The optimal removal rate was obtained under the conditions including pH of 5.5,33%of light intensity and 10‰of salinity.The removal rate was negatively correlated with the initial concentration of CIP.P.tricornutum showed good tolerance to CIP,which could provide information on potential application of microalgae for antibiotic pollution treatment in the marine environment.

关 键 词：环丙沙星 三角褐指藻 生长抑制 

分 类 号：X171.5[环境科学与工程—环境科学]