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微生物复合改性粘土去除东海原甲藻(Prorocentrum donghaiense)初探 |
刘姗姗1,2,3,4, 俞志明1,2,3,4, 宋秀贤1,2,3,4, 曹西华1,2,3,4, 袁涌铨1,2,4
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1.中国科学院海洋研究所 海洋生态与环境科学重点实验室 青岛 266071;2.青岛海洋科学与技术试点国家实验室 海洋生态与环境科学功能实验室 青岛 266237;3.中国科学院大学 北京 100049;4.中国科学院海洋大科学研究中心 青岛 266071
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摘要: |
近年来,随着对抑藻微生物认识的深入,利用藻-菌相互作用控制有害藻华展现出极大的应用前景。在前期改性粘土治理有害藻华方法的基础上,首次将不同种类的微生物与传统的改性粘土复合,研究了不同的复合比例、制备方式等对典型有害藻华生物——东海原甲藻(Prorocentrum donghaiense)去除效率的影响,初步探讨了其作用机制。结果表明:菌密度>1.5×1010 cells/L的EM菌(effective microorganisms,有效性微生物)及其滤液可以有效去除东海原甲藻;利用EM菌对粘土进行复合改性处理可以进一步提高改性粘土的除藻能力,呈现出1+1>2的效果。在适宜范围内,增加熟化时间与温度有利于复合改性粘土除藻效率的提升。文章进一步分析探讨了EM菌复合改性粘土的除藻机制,认为改性粘土通过富集EM菌和分泌的抑藻物质,增加了其对微藻的直接和间接除藻作用;适宜的熟化温度和熟化时间可促进EM菌的繁殖及其在改性粘土上的吸附,有利于复合改性粘土去除效率的提升。上述研究结果为改性粘土治理有害藻华技术的进一步提升和完善提供了新的探索。 |
关键词: 改性粘土 有害藻华 微生物技术 复合改性 |
DOI:10.11693/hyhz20210300063 |
分类号:X55 |
基金项目:山东省重大科技创新工程项目“赤潮治理新型功能材料的研发与示范应用”,2019JZZY010808号;山东省支持青岛海洋科学与技术试点国家实验室重大科技专项,2018SDKJ0504-2号;2019年度“泰山学者攀登计划”项目;中国科学院海洋大科学研究中心重点部署项目,COMS2020J02。 |
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RESEARCH ON MITIGATION OF PROROCENTRUM DONGHAIENSE BY MICRO-MODIFIED CLAY |
LIU Shan-Shan1,2,3,4, YU Zhi-Ming1,2,3,4, SONG Xiu-Xian1,2,3,4, CAO Xi-Hua1,2,3,4, YUAN Yong-Quan1,2,4
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1.CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;2.Laboratory of Marine Ecology and Environmental Science, Pilot National Laboratory for Marine Science and Technology(Qingdao), Qingdao 266237, China;3.University of Chinese Academy of Sciences, Beijing 100049, China;4.Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
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Abstract: |
With the deepening understanding of anti-algal microorganisms, application of algal-bacterial interaction to control harmful algal blooms has shown a great prospect. To develop a highly efficient and environment-friendly algal inhibition method, the effect of modified clay combined with algae inhibition bacteria on putting down Prorocentrum donghaiense bloom was studied. Results show that the effective microorganisms (EM) in concentration of >1.5×1010 cells/L could mitigate Prorocentrum donghaiense. The composite modification of clay with the EM effectively increased the rate of the algal removal. In the suitable range, increasing the time and temperature of treatment enhanced the algae removal efficiency. The method was shown environmental friendly for emergency elimination of harmful algal blooms and for long-term restoration of water quality as well. |
Key words: modified clay harmful algal bloom biotechnology micro-modification |