The mechanisms of ozonation on cyanobacteria and its toxins removal

Hengfeng Miao; Wenyi Tao

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The mechanisms of ozonation on cyanobacteria and its toxins removal

机译：臭氧氧化对蓝藻细菌的作用及其毒素去除

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In the present study,the effect of ozone(O3)as preoxidant for algae-laden source water,and the mechanisms that it causes algal cells broken and intracelluar cytoplasm release with its influence on microcystins(MC-LR,MC-RR)removal were investigated.Results showed that ozonation of the synthetic algae suspensions prepared from lab-cultured cyanobacteria Microcystis aeruginosa(M.aeruginosa)exerted a significant effect on living cell removal and its growth inhibition under appropriate ozone dosage(3 mg L~(-1)).Synchronously,the algal cell membrane and wall were possibly attacked by the ozonation treatment,which might lead to destroy the cell membrane,release intracellular cytoplasm,increase the dissolved organic carbon(DOC),and finally release the volatile organic compounds and microcystins.Ozonation was found as an effective method in removing of microcystins produced by M.aeruginosa,and the removal efficiency of MC-LR was higher than that of MC-RR.The comparative study of microcystins degradation by ozone in algae suspensions and supernatants showed that the degradation efficiency would be obviously influenced by the algae in solution.The DOC caused organic substances released form algal cell which could consume a significant mount of O3 would answer for the decrease of microcystins degradation efficiency.

机译：在本研究中，臭氧（O3）作为藻类水源水的预氧化剂的作用，以及其导致藻类细胞破裂和细胞内细胞质释放及其对微囊藻毒素（MC-LR，MC-RR）去除的影响的机理结果表明，在适当的臭氧剂量（3 mg L〜（-1））下，实验室培养的蓝藻铜绿微囊藻（M.aeruginosa）制备的合成藻类悬浮液的臭氧化作用对活细胞的去除及其生长抑制具有显着影响。同时，臭氧处理可能会破坏藻类细胞膜和壁，从而导致破坏细胞膜，释放细胞内细胞质，增加溶解的有机碳（DOC），并最终释放出挥发性有机化合物和微囊藻毒素。被认为是一种有效的去除铜绿假单胞菌产生的微囊藻毒素的方法，MC-LR的去除效率高于MC-RR。藻类悬浮液和上清液中臭氧的降解表明，溶液中的藻类对降解效率有明显影响。DOC引起藻类细胞释放的有机物可能消耗大量的O3，这可以解决微囊藻毒素降解效率降低的问题。

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《Separation and Purification Technology》 |2009年第1期|共7页
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Hengfeng Miao; Wenyi Tao;
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正文语种 eng
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Ozone; Cyanobacteria; Micro cystins; Algal cell broken; Dissolved organic carbon;

机译：臭氧;蓝细菌;微囊藻毒素;藻类细胞破碎;溶解的有机碳;

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1. The mechanisms of ozonation on cyanobacteria and its toxins removal [J] . Hengfeng Miao, Wenyi Tao Separation and Purification Technology . 2009,第1期

机译：臭氧氧化对蓝藻细菌的作用及其毒素去除
2. Ozonation and ozone-enhanced photocatalysis for VOC removal from air streams: Process optimization, synergy and mechanism assessment [J] . da Costa Filho Batuira M., Silva Gabriela V, Boaventura Rui A. R., The Science of the Total Environment . 2019,第OCTa15期

机译：臭氧和臭氧增强光催化去除气流中的VOC：工艺优化，协同作用和机理评估
3. Ozonation and ozone-enhanced photocatalysis for VOC removal from air streams: Process optimization, synergy and mechanism assessment [J] . da Costa Filho Batuira M., Silva Gabriela V, Boaventura Rui A. R., The Science of the Total Environment . 2019,第Octa15期

机译：从空气流中取出VOC的臭氧和臭氧增强的光催化：工艺优化，协同和机制评估
4. Occurrence of Cyanobacteria and Associated Toxins in Surface Water, Relative Risk, and Potential Changes Due to Environmental Factors in the United States [C] . K. A. Loftin, J. L. Graham, T. D. Harris Annual conference of the International Society of Exposure Science . 2014

机译：在美国，地表水中的蓝细菌和相关毒素的发生，相对风险以及由于环境因素引起的潜在变化
5. Removal of the cyanobacterial toxin microcystin-LR by biofiltration: Identification of toxin-degrading bacteria and effects of backwashing. [D] . Eleuterio, Lazaro. 2007

机译：通过生物过滤去除蓝藻毒素微囊藻毒素-LR：鉴定降解毒素的细菌和反洗效果。
6. Effect of ozonation on the removal of cyanobacterial toxins during drinking water treatment. [O] . Stefan J Hoeger, Daniel R Dietrich, Bettina C Hitzfeld 2002

机译：臭氧处理对饮用水处理过程中蓝藻毒素去除的影响。
7. Pré-tratamento com cloro e ozônio para remoção de cianobactérias Pre-treatment with chlorine and ozone for removal of the cyanobacteria [O] . Renata Iza Mondardo, Maurício Luiz Sens, Luiz Carlos de Melo Filho 2006

机译：pré-tratamento com cloroeozôniodararemoçãodeciabactérias用氯和臭氧进行预处理以去除蓝细菌
8. User's Guide for Executing OZIPM-4 (Ozone Isopleth Plotting with Optional Mechanisms, Version 4) with CBM-IV (Carbon-Bond Mechanisms-IV) or Optional Mechanisms. Volume 1. Description of the Ozone Isopleth Plotting Package. Version 4 [R] . Hogo, H. , Gery, M. W. 1988

机译：使用CBm-IV（碳键机制-IV）或可选机制执行OZIpm-4（使用可选机制的臭氧等值线图，第4版）的用户指南。第1卷。臭氧等值线图绘制包的描述。版本4

The mechanisms of ozonation on cyanobacteria and its toxins removal

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