化工环保2025，Vol.45Issue(4)：488-495,8.DOI:10.3969/j.issn.1006-1878.2025.04.005
火山岩固载化湖生卵囊藻对水中土霉素的降解
Degradation of oxytetracycline in water by Oocystis lacustris immobilized on volcanic rock
摘要
Abstract
Four typical green algae species,including Chlamydomonas reinhardtii,Oocystis lacustis,Chlorella vulgaris,and Tetradesmus obliquus,were selected in this study.The microalgae were immobilized on volcanic rock as a carrier,and oxytetracycline(OTC)was used as a target pollutant to analyze the feasibility of treating OTC with a volcanic rock-immobilized microalgae system.Among four screened microalgae species,the immobilized Oocystis lacustis system demonstrates superior performance,achieving removal efficiency of 93.18%,97.66%,and 98.54%within 96 h for three concentrations of 1×10-5 mol/L,1×10-6 mol/L,and 5×10-7 mol/L,significantly higher than that of volcanic rock(68.54%).Reactive oxygen species(ROS)are identified as crucial mediators in OTC degradation.The volcanic rock immobilization serves dual functions:providing a stable microenvironment for algal cell enrichment and enhancing the stress tolerance of Oocystis lacustis,which enables sustained ROS generation for OTC degradation while maintaining cellular viability.The immobilization effectively reduces the inhibition of OTC on algal photosynthetic systems.关键词
固载化微藻/火山岩载体/土霉素去除/抗生素降解/生理响应Key words
immobilized microalgae/volcanic rock carrier/oxytetracycline removal/antibiotic degradation/physiological response分类
资源环境引用本文复制引用
伍钊成,孙安然,沈忱思..火山岩固载化湖生卵囊藻对水中土霉素的降解[J].化工环保,2025,45(4):488-495,8.基金项目
中国纺织工业联合会应用基础研究项目(J202407) （J202407）
上海市自然科学基金面上项目(21ZR1401500). （21ZR1401500）
