Degradation of Microcystins from Microcystis aeruginosa by 185-nm UV Irradiation

详细信息    查看全文

• 作者：Shuyu Liu ; Xiaohui Hu ; Wenjun Jiang ; Liyan Ma ; Min Cai…
• 关键词：Microcystins ; Immersion ; Irradiation ; 185 nm UV ; Degradation
• 刊名：Water, Air, and Soil Pollution
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：227
• 期：4
• 全文大小：473 KB
• 参考文献：Carmichael, W. W. (2001). Health effects of toxin-producing cyanobacteria: “the CyanoHABs”. Human and Ecological Risk Assessment, 7(5), 1393–1407.CrossRef
  Chen, X. G., & Xiao, B. D. (2003). Photodecomposition of microcystin by UV irradiation. Journal of Agro-Environment Science, 22(3), 283–285.
  Chen, W., Gan, N. Q., & Song, L. R. (2004). Photodegradation dynamics of pure microcystin variants with illumination of fixed wavelength UV-lights. Acta Chimica Sinica, 62(2), 142–147.
  Chu, F., Huang, X., & Wei, R. (1989). Enzyme-linked immunosorbent assay for microcystins in blue-green algal blooms. Journal of the Association of Official Analytical Chemists, 73(3), 451–456.
  Daly, R. I., Ho, L., & Brookes, J. D. (2007). Effect of chlorination on Microcystis aeruginosa cell integrity and subsequent microcystin release and degradation. Environmental Science & Technology, 41(12), 4447–4453.CrossRef
  de la Cruz, A. A., et al. (2013). A review on cylindrospermopsin: the global occurrence, detection, toxicity and degradation of a potent cyanotoxin. Environmental Science: Processes & Impacts, 15(11), 1979–2003.
  Donati, C., et al. (1994). Microcystin-LR adsorption by powdered activated carbon. Water Research, 28(8), 1735–1742.CrossRef
  Glaze, W. H., Kang, J.-W., & Chapin, D. H. (1987). The chemistry of water treatment processes involving ozone, hydrogen peroxide and ultraviolet radiation. Ozone: Science & Engineering, 9(4), 335–352.CrossRef
  Haughey, M. A., et al. (2000). Forms and fate of Cu in a source drinking water reservoir following CuSO4 treatment. Water Research, 34(13), 3440–3452.CrossRef
  Jiang, W., et al. (2014). Oxidation of microcystin-LR by ferrate(VI): kinetics, degradation pathways, and toxicity assessments. Environmental Science & Technology, 48(20), 12164–12172.CrossRef
  Jones, G. J., & Orr, P. T. (1994). Release and degradation of microcystin following algicide treatment of a Microcystis aeruginosa bloom in a recreational lake, as determined by HPLC and protein phosphatase inhibition assay. Water Research, 28(4), 871–876.CrossRef
  Lee, C., Choi, W., & Yoon, J. (2005). UV photolytic mechanism of N-nitrosodimethylamine in water: roles of dissolved oxygen and solution pH. Environmental Science & Technology, 39(24), 9702–9709.CrossRef
  Legrini, O., Oliveros, E., & Braun, A. M. (1993). Photochemical processes for water treatment. Chemical Reviews, 93(2), 671–698.CrossRef
  Li, D., Cong, W., Cai, Z., Shi, D., & Ouyang, F. (2003). Some physiological and biochemical changes in marine eukaryotic red tide alga Heterosigma akashiwo during the alleviation from iron limitation[J]. Plant Physiology and Biochemistry, 41(3), 295–301.CrossRef
  Lippemeier, S., Frampton, D. M. F., Blackburn, S. I., Geier, S. C., & Negri, A. P. (2003). Influence of phosphorus limitation on toxicity and photosynthesis of Alexandrium minutum (Dinophyceae) monitored by in-line detection of variable chlorophyll fluorescence[J]. Journal of Phycology, 39(2), 320–331.CrossRef
  Liu, S. Y., Zhao, Y. P., Jiang, W. J., Wu, M. H., & Ma, F. (2014). Inactivation of Microcystis aeruginosa by electron beam irradiation. Water, Air, and Soil Pollution, 225, 2093–2098.CrossRef
  Reckhow, D.A., Singer, P.C. (1990). Chlorination by-products in drinking waters: from formation potentials to finished water concentrations. Journal (American Water Works Association). p. 173–180.
  Rippka, R., et al. (1979). Generic assignments, strain histories and properties of pure cultures of cyanobacteria. Journal of General Microbiology, 111(1), 1–61.
  Sakai, H., Oguma, K., Katayama, H., & Ohgaki, S. (2007). Effects of low or medium-pressure UV irradiation on the release of intracellular microcystin[J]. Water Research, 41(5), 3458–3464.CrossRef
  Sakai, H., Katayama, H., Oguma, K., & Ohgaki, S. (2009). Kinetics of Microcystis aeruginosa growth and intracellular microcystins release after UV irradiation[J]. Environmental Science and Technology, 43(3), 896–901.CrossRef
  Song, W., et al. (2005). Ultrasonically induced degradation and detoxification of microcystin-LR (cyanobacterial toxin). Environmental Science & Technology, 39(16), 6300–6305.CrossRef
  Zhao, C., et al. (2014). UV and visible light activated TiO2 photocatalysis of 6-hydroxymethyl uracil, a model compound for the potent cyanotoxin cylindrospermopsin. Catalysis Today, 224, 70–76.CrossRef
  Zheng, B., et al. (2012). The removal of Microcystis aeruginosa in water by gamma-ray irradiation. Separation and Purification Technology, 85, 165–170.CrossRef
  
• 作者单位：Shuyu Liu (1) (2)
  Xiaohui Hu (1)
  Wenjun Jiang (3)
  Liyan Ma (4)
  Min Cai (5)
  Hong Xu (1)
  minghong Wu (1)
  Fang Ma (2)
  
  1. School of Environment and Chemical Engineering, Shanghai University, Shanghai, 201800, People’s Republic of China
  2. State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, People’s Republic of China
  3. Department of Chemistry and Biochemistry, Florida International University, Miami, FL, 33199, USA
  4. Key Laboratory of East China Sea and Oceanic Fishery Resources Exploitation, Ministry of Agriculture, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
  5. Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC, 29208, USA
  
• 刊物类别：Earth and Environmental Science
• 刊物主题：Environment
  Environment
  Atmospheric Protection, Air Quality Control and Air Pollution
  Waste Water Technology, Water Pollution Control, Water Management and Aquatic Pollution
  Terrestrial Pollution
  Hydrogeology
  
• 出版者：Springer Netherlands
• ISSN：1573-2932

文摘

Microcystins (MCs) are toxic compounds produced by cyanobacteria in eutrophicate water environment and threaten the drinking water quality which often leads to serious sicknesses. MCs are difficult to be removed in water treatment when the concentration is very low but still harmful. When the MC concentration is low (μg/L), filter or some conventional chemical does not work, but UV can keep removing it to a lower level by some active groups. Herein, 185-nm UV irradiation in an immersing mode was used to remove MCs. Compared with the normal radiation mode, the immersing mode showed a remarkable degradation rate of MCs and a greater removal efficiency than the direct radiation. Radicals of ·H and ·OH were produced and strengthened the removal rate, after H₂O absorbed 185 nm photons. Three important factors of pH value, initial concentration, and aeration capacity were investigated. When pH was less than 7, a better removal rate by ·H was found, due to the main path of MC degradation and Adda strain removal. When the initial concentration increased, the MC removal ratio decreased because HO· formed near the lamp surface and degraded MC molecules fast. When the aeration capacity improved, the MC removal ratio for the presence of air enforced reaction of dissolved oxygen with hydrated electrons and hydrogen atoms produced in the radiolysis.