Water Resources Management

, Volume 15, Issue 4, pp 213–221 | Cite as

Alum and Lime-Alum Removal of Toxic and Nontoxic Phytoplankton from the Nile River Water: Laboratory Study

Article

Abstract

No phytoplankton should be present in treated drinking water because of its potential for bad odor and toxins that may pose hazards to animals and humans upon consumption. This study describes the efficiency of alum and lime-alum treatments for removing phytoplankton from the Nile river water used as a source of drinking water in Egypt. The results showed that alum could not precipitate all phosphate nor coagulate bloom forming cyanobacteria present in the water sample. On the other hand, lime-alum treatment precipitated much more phosphate than alum, and coagulated all phytoplankton present in the water samples including those that could not be coagulated by alum. Furthermore, lime-alum treatment did not change the pH of the water during all the experiment period. Hence, it is suggested that lime-alum be used instead of alum during water treatment processes in Egypt.

alum cyanobacteria lime-alum microcystins phytoplankton removal 

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References

  1. An, J. and Carmichael, W.W.: 1994, ‘Use of a colorimetric protein phosphatase inhibition assay and enzyme linked immunosorbent assay for the study of microcystins and nodularins’, Toxicon. 32, 1495-1507.Google Scholar
  2. Baines, S. B. and Pace, M. L.: 1991, ‘The production of dissolved organic matter by phytoplankton and its importance to bacteria: Patterns across marine and freshwater systems’, Limnol. Oceanogr. 36, 1078-1090.Google Scholar
  3. Carmichael, W. W.: 1988, ‘Toxins of Freshwater Algae’, in A. T. Tu (ed.), Handbook of Natural Toxins, Marcel Dekker, New York, pp. 121-147.Google Scholar
  4. Carmichael, W. W.: 1992, ‘Cyanobacteria secondary metabolites–The cyanotoxins’, J. Appl.Bacteriol. 72, 445-459.Google Scholar
  5. Carmichael, W. W. and Falconer, I. R.: 1993, ‘Diseases Related to Freshwater Blue-Green Algal Toxins and Control Measures’, in I. R. Falconer (ed.), Algal Toxins in Seafood and Drinking Water, Academic Press, London, U.K.Google Scholar
  6. Dewis, J. and Freitas, F.: 1970, ‘Chlorostannous Reduced Molybdophosphoric System’, in Physical and Chemical Methods of Soil and Water Analysis, Soil Bulletin, No. 10, Food and Agriculture Organization of the United Nations, Rome.Google Scholar
  7. Falconer, I. R.: 1993, ‘Measurement of Toxins from Blue-Green Algae in Water and Foodstuff’, in I. R. Falconer (ed.), Algal Toxins in Seafood and Drinking Water, Academic Press, London, U.K., pp. 165-170.Google Scholar
  8. Hansen, A. M., Christensen, J. V. and Sortkjaer, O.: 1991, ‘Effects of high pH on zooplankton and nutrients in fish-free enclosures’, Arch. Hydrobiol. 123, 143-164.Google Scholar
  9. Jochimsen, E. M., Carmichael, W. W., An, J., Cardo, D. M., Cookson, S. T., Holmes, C. E. M., Antunes, M. B. C., demelo Filho, D. A., Lyra, T. M., Barreto, V. S. T., Azevado, S. M. F. O. and Jarvis W. R.: 1998, ‘Liver Failure and death after exposure to microcystins at a hemodialysis center in Brazil’, The New England Journal of Medicine 338, 873-878.Google Scholar
  10. Kenefick, S. L., Hrudey, S. E., Peterson, H. G. and Prepas, E. E.: 1993, ‘Toxic release from Microcystis aeruginosa after chemical treatment’, Wat. Sci. Technol. 27, 433-440.Google Scholar
  11. Kiviranta, J., Sivonen, K., Niemela, S. I. and Huovinen, K.: 1991, ‘Detection of toxicity of cyanobacteria by Artemia salina bioassay’, Environ. Toxicol. Wat. Qual. 6, 423-436.Google Scholar
  12. Lam, A. K.-Y. and Prepas, E. E.: 1997, In situ evaluation of options for chemical treatment of hepatic cyanobacterial blooms, Can. J. Fish. Aqu. Sci. 54, 1736-1742.Google Scholar
  13. Lam, A. K.-Y., Prepas, E. E., Spink, D. and Hrudey, S. E.: 1995, ‘Chemical control of hepatotoxic phytoplankton blooms: Implications for human health’, Wat. Res. 29, 1845-1854.Google Scholar
  14. Mohamed, Z. A.: 1998, ‘Studies on Egyptian Toxic Freshwater Cyanobacteria (Blue-Green Algae): Identification, Production and Removal of Microcystins’, Ph.D. Thesis, South Valley University, Egypt in cooperation with Wright State University, U.S.A., 182 pp.Google Scholar
  15. Mohamed, Z. A., Carmichael, W. W., An, J. and El-Sharouny, H. M.: 1999, ‘Activated carbon removal efficiency of microcystins in an aqueous cell extract of Microcystis aeruginosa and Oscillatoria tenuis strains isolated from Egyptian freshwaters’, Environ. Toxicol. Wat. Qual. 14, 197-201.Google Scholar
  16. Murphy, T. P. and Prepas, E. E.: 1990, ‘Lime treatment of hardwater lakes to reduce eutrophication’, Inter. Vere. Theor. Ange. Limnol. 24, 327-334.Google Scholar
  17. Perkis, S. S.: 1994, ‘Benthic Blue-Green Algal Recruitment in Response to Alum and Environmental Factors’, M.Sc. Thesis, University ofWashington, Department of Civil Engineering, Seattle,WA.Google Scholar
  18. Prescott, G. W.: 1978, How to Know the Freshwater Phytoplankton, 3rd ed., Cambridge University Press, Cambridge, U.K.Google Scholar
  19. Ressom, R., Soong, F. S., Fitzgerald, J., Turczynowiczx, L., ElSaadi, O., Roder, D., Maynard, T. and Falconer, I. R.: 1994, ‘Health effects of toxic cyanobacteria (blue-green algae)’, National Health and Medical Research Council, Canberra, Australia, Australian Government Publishing Service.Google Scholar
  20. Schindler, D. W.: 1984, ‘Eutrophication and recovery in experimental lakes: Implications for lake management’, Sci. 184, 897-899.Google Scholar
  21. Talling, J. F. and Driver, D.: 1963, in M. Doty (ed.) Primary Productivity Measurements, Marine and Freshwater, UD Atomic Energy Commission, Washington, D.C., pp. 142.Google Scholar
  22. Zhang, Y. and Prepas, E. E., 1996, ‘Short-term effects of Ca(OH)2 additions on phytoplankton biomass: A comparison of laboratory and in situ experiments’, Wat. Res. 30, 1285-1294.Google Scholar

Copyright information

© Kluwer Academic Publishers 2001

Authors and Affiliations

  1. 1.Department of Botany, Faculty of ScienceSouth Valley UniversitySohagEgypt

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